LiveActive security incident?Get immediate response
MITRE ATT&CK® Malware

S0534: Bazar

Bazar is a downloader and backdoor that has been used since at least April 2020, with infections primarily against professional services, healthcare, manufacturing, IT, logistics and travel companies across the US and Europe. Bazar reportedly has ties to TrickBot campaigns and can be used to deploy additional malware, including ransomware, and to steal sensitive data.[1]

EnterpriseS0534MalwareObject v2.0Modified
Glexia's Take · Automated analysis

Security context for executives and security teams

Automation confidenceMedium

S0534: Bazar describes [Bazar](https://attack.mitre.org/software/S0534) is a downloader and backdoor that has been used since at least April 2020, with infections primarily against professional services, healthcare, manufacturing, IT, logistics and travel companies across the US and Europe. [Bazar](https://attack.mitre.org/software/S0534) reportedly has ties to [TrickBot](https://attack.mitre.org/software/S0266) campaigns and can be used to deploy additional malware, including ransomware, and to steal sensitive data.(Citation: Cybereason...

Executive priority

S0534: Bazar is an official MITRE ATT&CK software. Glexia treats it as defensive behavior context for prioritizing monitoring, control validation, and response planning without using the object by itself as an attribution claim.

Technical view

Security teams should validate S0534: Bazar by reviewing the official ATT&CK relationships, mapped tactics (the mapped ATT&CK tactic context), supported platforms (Windows), and available local telemetry before making detection or mitigation decisions.

Likely telemetry

  • Official ATT&CK relationships and object metadata
  • Network, endpoint, and security-tool telemetry

Detection direction

  • Validate whether S0534: Bazar appears in your detection coverage and tabletop scenarios.
  • Use the object to align executive risk language with SOC, incident response, and detection engineering work.
  • Do not treat ATT&CK relationship context as attribution without corroborating evidence.

Mitigation priorities

  • Map the object to existing controls and identify missing telemetry or response ownership.
  • Prioritize mitigations that reduce exposure on the listed platforms and tactics.
  • Review adjacent ATT&CK relationships before changing policy, detections, or reporting language.
Additional notes and limits

Baseline Glexia take generated from the official MITRE ATT&CK STIX object, source hash, tactics, platforms, and detection fields. It is safe to replace with a richer model-generated take for the same source hash later.

This baseline take is source-grounded and schema-validated, but it does not include environment-specific telemetry, incident evidence, or threat-intelligence corroboration.

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Official MITRE ATT&CK definition

Bazar

Bazar is a downloader and backdoor that has been used since at least April 2020, with infections primarily against professional services, healthcare, manufacturing, IT, logistics and travel companies across the US and Europe. Bazar reportedly has ties to TrickBot campaigns and can be used to deploy additional malware, including ransomware, and to steal sensitive data.[1]

View the same entry on attack.mitre.org (MITRE-hosted reference; in-page links above use the Glexia ATT&CK library.)

Glexia analysis

How security teams should use this page

Treat this object as behavior context, not an attribution claim. Validate the related groups, software, data sources, and mitigations against official ATT&CK relationships and your own telemetry before making control-coverage decisions.

ATT&CK relationship table

Techniques used

This mirrors the MITRE pattern of making group, software, campaign, and technique relationships scannable. Relationship notes come from mirrored ATT&CK relationship text when available.

51 rows
DomainIDNameRelationship / procedure
EnterpriseT1083File and Directory Discovery

Bazar can enumerate the victim's desktop.[1][4]

EnterpriseT1482Domain Trust Discovery

Bazar can use Nltest tools to obtain information about the domain.[1][4]

EnterpriseT1573.002Asymmetric CryptographySub-technique

Bazar can use TLS in C2 communications.CitationZscaler Bazar September 2020

EnterpriseT1087.002Domain AccountSub-technique

Bazar has the ability to identify domain administrator accounts.[4]CitationDFIR Ryuk's Return October 2020

EnterpriseT1018Remote System Discovery

Bazar can enumerate remote systems using Net View.[1]

EnterpriseT1204.001Malicious LinkSub-technique

Bazar can gain execution after a user clicks on a malicious link to decoy landing pages hosted on Google Docs.[1]CitationZscaler Bazar September 2020[2]

EnterpriseT1135Network Share Discovery

Bazar can enumerate shared drives on the domain.[4]

EnterpriseT1055Process Injection

Bazar can inject code through calling VirtualAllocExNuma.[1]

EnterpriseT1197BITS Jobs

Bazar has been downloaded via Windows BITS functionality.[4]

EnterpriseT1059.003Windows Command ShellSub-technique

Bazar can launch cmd.exe to perform reconnaissance commands.[1]CitationZscaler Bazar September 2020

EnterpriseT1059.001PowerShellSub-technique

Bazar can execute a PowerShell script received from C2.[4][2]

EnterpriseT1027.013Encrypted/Encoded FileSub-technique

Bazar has used XOR, RSA2, and RC4 encrypted files.[1][4][2]

EnterpriseT1518.001Security Software DiscoverySub-technique

Bazar can identify the installed antivirus engine.[1]

EnterpriseT1497Virtualization/Sandbox Evasion

Bazar can attempt to overload sandbox analysis by sending 1550 calls to printf.[1]

EnterpriseT1055.013Process DoppelgängingSub-technique

Bazar can inject into a target process using process doppelgänging.[1][4]

EnterpriseT1070.009Clear PersistenceSub-technique

Bazar's loader can delete scheduled tasks created by a previous instance of the malware.[4]

EnterpriseT1005Data from Local System

Bazar can retrieve information from the infected machine.[1]

EnterpriseT1027.007Dynamic API ResolutionSub-technique

Bazar can hash then resolve API calls at runtime.[1][4]

EnterpriseT1614.001System Language DiscoverySub-technique

Bazar can perform a check to ensure that the operating system's keyboard and language settings are not set to Russian.[4]

EnterpriseT1124System Time Discovery

Bazar can collect the time on the compromised host.[1][4]

EnterpriseT1057Process Discovery

Bazar can identity the current process on a compromised host.[1]

EnterpriseT1104Multi-Stage Channels

The Bazar loader is used to download and execute the Bazar backdoor.[1]CitationZscaler Bazar September 2020

EnterpriseT1012Query Registry

Bazar can query Windows\CurrentVersion\Uninstall for installed applications.[1][4]

EnterpriseT1036.005Match Legitimate Resource Name or LocationSub-technique

The Bazar loader has named malicious shortcuts "adobe" and mimicked communications software.[1][4][2]

EnterpriseT1518Software Discovery

Bazar can query the Registry for installed applications.[1]

EnterpriseT1573.001Symmetric CryptographySub-technique

Bazar can send C2 communications with XOR encryption.[4]

EnterpriseT1547.004Winlogon Helper DLLSub-technique

Bazar can use Winlogon Helper DLL to establish persistence.CitationZscaler Bazar September 2020

EnterpriseT1036.004Masquerade Task or ServiceSub-technique

Bazar can create a task named to appear benign.[1]

EnterpriseT1016System Network Configuration Discovery

Bazar can collect the IP address and NetBIOS name of an infected machine.[1]

EnterpriseT1497.003Time Based ChecksSub-technique

Bazar can use a timer to delay execution of core functionality.[4]

EnterpriseT1033System Owner/User Discovery

Bazar can identify the username of the infected user.[4]

EnterpriseT1553.002Code SigningSub-technique

Bazar has been signed with fake certificates including those appearing to be from VB CORPORATE PTY. LTD.[1]

EnterpriseT1070.004File DeletionSub-technique

Bazar can delete its loader using a batch file in the Windows temporary folder.[4]

EnterpriseT1008Fallback Channels

Bazar has the ability to use an alternative C2 server if the primary server fails.[4]

EnterpriseT1071.001Web ProtocolsSub-technique

Bazar can use HTTP and HTTPS over ports 80 and 443 in C2 communications.[1][4]CitationDFIR Conti Bazar Nov 2021

EnterpriseT1566.002Spearphishing LinkSub-technique

Bazar has been spread via emails with embedded malicious links.[1]CitationZscaler Bazar September 2020[2]

EnterpriseT1105Ingress Tool Transfer

Bazar can download and deploy additional payloads, including ransomware and post-exploitation frameworks such as Cobalt Strike.[1]CitationZscaler Bazar September 2020[4][2]

EnterpriseT1087.001Local AccountSub-technique

Bazar can identify administrator accounts on an infected host.[4]

EnterpriseT1685Disable or Modify Tools

Bazar has manually loaded ntdll from disk in order to identity and remove API hooks set by security products.[4]

EnterpriseT1053.005Scheduled TaskSub-technique

Bazar can create a scheduled task for persistence.[1][4]

EnterpriseT1102Web Service

Bazar downloads have been hosted on Google Docs.[1]CitationZscaler Bazar September 2020

EnterpriseT1036.007Double File ExtensionSub-technique

The Bazar loader has used dual-extension executable files such as PreviewReport.DOC.exe.[1]

EnterpriseT1140Deobfuscate/Decode Files or Information

Bazar can decrypt downloaded payloads. Bazar also resolves strings and other artifacts at runtime.[1][4]

EnterpriseT1047Windows Management Instrumentation

Bazar can execute a WMI query to gather information about the installed antivirus engine.[1]CitationDFIR Ryuk's Return October 2020

EnterpriseT1055.012Process HollowingSub-technique

Bazar can inject into a target process including Svchost, Explorer, and cmd using process hollowing.[1][4]

EnterpriseT1106Native API

Bazar can use various APIs to allocate memory and facilitate code execution/injection.[1]

EnterpriseT1547.009Shortcut ModificationSub-technique

Bazar can establish persistence by writing shortcuts to the Windows Startup folder.[1][4]

EnterpriseT1547.001Registry Run Keys / Startup FolderSub-technique

Bazar can create or add files to Registry Run Keys to establish persistence.[1][4]

EnterpriseT1082System Information Discovery

Bazar can fingerprint architecture, computer name, and OS version on the compromised host. Bazar can also check if the Russian language is installed on the infected machine and terminate if it is found.[1][4]

EnterpriseT1027.002Software PackingSub-technique

Bazar has a variant with a packed payload.[1]CitationZscaler Bazar September 2020

EnterpriseT1568.002Domain Generation AlgorithmsSub-technique

Bazar can implement DGA using the current date as a seed variable.[1]

Associated objects

Groups, software, and campaigns

GroupEnterprise

G1011: EXOTIC LILY

EXOTIC LILY is a financially motivated group that has been closely linked with Wizard Spider and the deployment of ransomware including Conti and Diavol. EXOTIC LILY may be acting as an initial access broker for other malicious actors, and has targeted a wide range of industries including IT, cybersecurity, and healthcare since at least September 2021.[1]

GroupEnterprise

G0102: Wizard Spider

Wizard Spider is a Russia-based financially motivated threat group originally known for the creation and deployment of TrickBot since at least 2016. Wizard Spider possesses a diverse arsenal of tools and has conducted ransomware campaigns against a variety of organizations, ranging from major corporations to hospitals.[1][2][3]

CampaignEnterprise

C0015: C0015

C0015 was a ransomware intrusion during which the unidentified attackers used Bazar, Cobalt Strike, and Conti, along with other tools, over a 5 day period. Security researchers assessed the actors likely used the widely-circulated Conti ransomware playbook based on the observed pattern of activity and operator errors.[1]

Relationship explorer

All related ATT&CK context

Change history

Object version and sync metadata

The fields below describe the current mirrored snapshot. When Glexia retains multiple ATT&CK source imports, you can open the table to compare the same object across releases (hashes and MITRE timestamps). For MITRE’s own release notes and roadmap, see ATT&CK resources — Updates.

ATT&CK release
19.2
Object version
2.0
Created
Modified
Raw hash
08192cbbbc78a9d1...
Imported snapshots across ATT&CK releases(2)
ReleaseBundle importedObject versionModifiedStatusRaw hash
19.22.0Current bundle08192cbbbc78…
19.12.0Older bundle08192cbbbc78…
Raw source

Mirrored ATT&CK source object

The raw object is retained through the mirrored ATT&CK source bundle and object hash. The raw endpoint returns the exact object from the mirrored bundle when available.

Source references

External references and citations

MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.

  1. [1]
    Cybereason Bazar July 2020

    Cybereason Nocturnus. (2020, July 16). A BAZAR OF TRICKS: FOLLOWING TEAM9’S DEVELOPMENT CYCLES. Retrieved November 18, 2020.

    Open source URL
  2. [2]
    CrowdStrike Wizard Spider October 2020

    Podlosky, A., Hanel, A. et al. (2020, October 16). WIZARD SPIDER Update: Resilient, Reactive and Resolute. Retrieved June 15, 2021.

    Open source URL
  3. [3]
    Microsoft Ransomware as a Service

    Microsoft. (2022, May 9). Ransomware as a service: Understanding the cybercrime gig economy and how to protect yourself. Retrieved March 10, 2023.

    Open source URL
  4. [4]
    NCC Group Team9 June 2020

    Pantazopoulos, N. (2020, June 2). In-depth analysis of the new Team9 malware family. Retrieved December 1, 2020.

    Open source URL
  5. [5]
    Bazaloader

    (Citation: Microsoft Ransomware as a Service)

  6. [6]
    FireEye KEGTAP SINGLEMALT October 2020

    Kimberly Goody, Jeremy Kennelly, Joshua Shilko, Steve Elovitz, Douglas Bienstock. (2020, October 28). Unhappy Hour Special: KEGTAP and SINGLEMALT With a Ransomware Chaser. Retrieved October 28, 2020.

    Open source URL
  7. [7]
    KEGTAP

    (Citation: FireEye KEGTAP SINGLEMALT October 2020)(Citation: CrowdStrike Wizard Spider October 2020)

  8. [8]
    Team9

    (Citation: Cybereason Bazar July 2020)(Citation: NCC Group Team9 June 2020)

  9. [9]
    mitre-attackS0534
    Open source URL
Source and licensing

Source: MITRE ATT&CK®. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation. Glexia is not affiliated with or endorsed by MITRE.