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MITRE ATT&CK® Group

G0121: Sidewinder

Sidewinder is a suspected Indian threat actor group that has been active since at least 2012. They have been observed targeting government, military, and business entities throughout Asia, primarily focusing on Pakistan, China, Nepal, and Afghanistan.[1][2][3]

EnterpriseG0121GroupObject v1.2Modified
Discuss defensive coverageBack to ATT&CK
Glexia's Take · Automated analysis

Security context for executives and security teams

Automation confidenceMedium

Sidewinder is an ATT&CK group entry for a suspected Indian threat actor reported as active since at least 2012 and observed targeting government, military, and business entities in parts of Asia. Its value for defenders is not a single indicator list, but the behavior pattern in the relationships: user-driven execution, scripting, client exploitation, discovery, staging, web-based command and control, tool transfer, and automated collection/exfiltration. For leaders, this makes Sidewinder relevant to resilience planning where phishing, endpoint scripting, and sensitive document exposure could affect government, defense, or regionally connected business operations.

Executive priority

Prioritize this as a validation scenario for targeted intrusion readiness rather than as proof of current exposure. Executives should ask whether the organization can detect and investigate a chain that begins with malicious links or files, uses Windows scripting or trusted utilities, performs broad discovery, stages data locally, and moves data out over common web protocols. This supports control prioritization for endpoint visibility, email/web risk reduction, vulnerability management for client applications, data protection, and incident response evidence collection.

Technical view

ATT&CK does not provide a detection section for Sidewinder, so SOC and IR teams should validate coverage from the related techniques. Key areas include execution through PowerShell, Visual Basic, JavaScript, Mshta, malicious links/files, and exploitation for client execution; discovery of users, processes, network configuration, files, system information, time, installed software, and security tools; local staging and automated collection; ingress tool transfer; web-protocol command and control; and automated exfiltration. Koadic is the associated software relationship and is described as a Windows post-exploitation framework using Windows Script Host, so Windows script execution telemetry is especially important where Windows assets are in scope.

Likely telemetry

  • Endpoint process creation and command-line logging for PowerShell, script hosts, mshta.exe, JavaScript/JScript, and Visual Basic execution
  • Parent-child process relationships showing document, browser, email, script host, or trusted utility execution chains
  • File creation, modification, and directory traversal events related to local data staging and file discovery
  • Discovery command evidence for user, process, network configuration, system information, software, security software, and system time enumeration
  • Network proxy, DNS, firewall, and web gateway logs for outbound HTTP/S or other web-protocol command-and-control patterns

Detection direction

  • Build detections around sequences, not isolated commands: user interaction or client exploitation followed by scripting, discovery, staging, and outbound web traffic is more meaningful than any single administrative utility.
  • Tune for legitimate administration noise because discovery commands, PowerShell, JavaScript, and web protocols are common in enterprise environments.
  • Validate whether obfuscated commands and encoded or encrypted files are visible to existing endpoint, EDR, proxy, and logging controls.
  • Review mshta.exe and Windows Script Host activity where Windows endpoints are present, especially when launched from user-writable paths, browsers, email clients, or document applications.
  • Correlate security software discovery with later evasion, staging, or transfer behaviors; on its own it may overlap with IT inventory activity.

Mitigation priorities

  • Reduce initial execution risk through email and web controls, user-focused safeguards for malicious links/files, and hardening of client applications vulnerable to exploitation.
  • Limit and monitor script execution, including PowerShell, Windows Script Host, JavaScript/JScript, Visual Basic, and mshta.exe where operationally feasible.
  • Maintain patch and vulnerability management for client applications because exploitation for client execution is part of the related behavior set.
  • Improve endpoint visibility for command-line execution, file staging, discovery activity, and suspicious parent-child process chains.
  • Constrain outbound network paths and monitor web-protocol traffic for unusual destinations, automation, or data transfer patterns.
Additional notes and limits

The strongest defensive value comes from using Sidewinder as a threat-informed test case across phishing/user execution, scripting, discovery, collection, C2, and exfiltration. The official group description includes regional targeting and aliases, while the relationship set provides the practical detection and control validation surface. Koadic’s Windows Script Host behavior is notable, but the group object itself lists no platforms, so platform-specific assumptions should be validated locally.

ATT&CK provides no official detection guidance for this group, and the group object does not specify platforms or tactics. The relationships identify associated software and techniques, but they do not prove current activity against any organization or guarantee that all listed behaviors occur in every intrusion. Local telemetry, asset inventory, geography, business ties, and incident evidence are required for prioritization.

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

Official MITRE ATT&CK definition

Sidewinder

Sidewinder is a suspected Indian threat actor group that has been active since at least 2012. They have been observed targeting government, military, and business entities throughout Asia, primarily focusing on Pakistan, China, Nepal, and Afghanistan.[1][2][3]

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.

30 rows
DomainIDNameRelationship / procedure
EnterpriseT1203Exploitation for Client Execution

Sidewinder has exploited vulnerabilities to gain execution including CVE-2017-11882 and CVE-2020-0674.[1][3]

EnterpriseT1518.001Security Software DiscoverySub-technique

Sidewinder has used the Windows service winmgmts:\\.\root\SecurityCenter2 to check installed antivirus products.[4]

EnterpriseT1218.005MshtaSub-technique

Sidewinder has used mshta.exe to execute malicious payloads.[4][5]

EnterpriseT1598.003Spearphishing LinkSub-technique

Sidewinder has sent e-mails with malicious links to credential harvesting websites.[1]

EnterpriseT1124System Time Discovery

Sidewinder has used tools to obtain the current system time.[1]

EnterpriseT1566.002Spearphishing LinkSub-technique

Sidewinder has sent e-mails with malicious links often crafted for specific targets.[1][3]

EnterpriseT1074.001Local Data StagingSub-technique

Sidewinder has collected stolen files in a temporary folder in preparation for exfiltration.[1]

EnterpriseT1057Process Discovery

Sidewinder has used tools to identify running processes on the victim's machine.[1]

EnterpriseT1059.007JavaScriptSub-technique

Sidewinder has used JavaScript to drop and execute malware loaders.[1][5]

EnterpriseT1027.013Encrypted/Encoded FileSub-technique

Sidewinder has used base64 encoding and ECDH-P256 encryption for payloads.[1][4][3]

EnterpriseT1020Automated Exfiltration

Sidewinder has configured tools to automatically send collected files to attacker controlled servers.[1]

EnterpriseT1105Ingress Tool Transfer

Sidewinder has used LNK files to download remote files to the victim's network.[1][3]

EnterpriseT1547.001Registry Run Keys / Startup FolderSub-technique

Sidewinder has added paths to executables in the Registry to establish persistence.[4][5][3]

EnterpriseT1071.001Web ProtocolsSub-technique

Sidewinder has used HTTP in C2 communications.[1][4][5]

EnterpriseT1559.002Dynamic Data ExchangeSub-technique

Sidewinder has used the ActiveXObject utility to create OLE objects to obtain execution through Internet Explorer.[4][5]

EnterpriseT1083File and Directory Discovery

Sidewinder has used malware to collect information on files and directories.[1]

EnterpriseT1016System Network Configuration Discovery

Sidewinder has used malware to collect information on network interfaces, including the MAC address.[1]

EnterpriseT1598.002Spearphishing AttachmentSub-technique

Sidewinder has sent e-mails with malicious attachments that lead victims to credential harvesting websites.[1][4][3]

EnterpriseT1027.010Command ObfuscationSub-technique

Sidewinder has used base64 encoding for scripts.[1][4]

EnterpriseT1059.001PowerShellSub-technique

Sidewinder has used PowerShell to drop and execute malware loaders.[1]

EnterpriseT1518Software Discovery

Sidewinder has used tools to enumerate software installed on an infected host.[1][4]

EnterpriseT1059.005Visual BasicSub-technique

Sidewinder has used VBScript to drop and execute malware loaders.[1]

EnterpriseT1082System Information Discovery

Sidewinder has used tools to collect the computer name, OS version, installed hotfixes, as well as information regarding the memory and processor on a compromised host.[1][5]

EnterpriseT1119Automated Collection

Sidewinder has used tools to automatically collect system and network configuration information.[1]

EnterpriseT1566.001Spearphishing AttachmentSub-technique

Sidewinder has sent e-mails with malicious attachments often crafted for specific targets.[1]

EnterpriseT1036.005Match Legitimate Resource Name or LocationSub-technique

Sidewinder has named malicious files rekeywiz.exe to match the name of a legitimate Windows executable.[5]

EnterpriseT1204.001Malicious LinkSub-technique

Sidewinder has lured targets to click on malicious links to gain execution in the target environment.[1][4][5][3]

EnterpriseT1204.002Malicious FileSub-technique

Sidewinder has lured targets to click on malicious files to gain execution in the target environment.[1][4][5][3]

EnterpriseT1033System Owner/User Discovery

Sidewinder has used tools to identify the user of a compromised host.[1]

EnterpriseT1574.001DLLSub-technique

Sidewinder has used DLL side-loading to drop and execute malicious payloads including the hijacking of the legitimate Windows application file rekeywiz.exe.[1]

Associated objects

Groups, software, and campaigns

ToolEnterprise

S0250: Koadic

Koadic is a Windows post-exploitation framework and penetration testing tool that is publicly available on GitHub. Koadic has several options for staging payloads and creating implants, and performs most of its operations using Windows Script Host.[1][2][3]

Windows
Relationship explorer

All related ATT&CK context

uses · TechniqueT1203: Exploitation for Client ExecutionEnterpriseuses · TechniqueT1518.001: Security Software DiscoveryEnterpriseuses · TechniqueT1218.005: MshtaEnterpriseuses · TechniqueT1598.003: Spearphishing LinkEnterpriseuses · TechniqueT1124: System Time DiscoveryEnterpriseuses · TechniqueT1566.002: Spearphishing LinkEnterpriseuses · TechniqueT1074.001: Local Data StagingEnterpriseuses · TechniqueT1057: Process DiscoveryEnterpriseuses · TechniqueT1059.007: JavaScriptEnterpriseuses · TechniqueT1027.013: Encrypted/Encoded FileEnterpriseuses · TechniqueT1020: Automated ExfiltrationEnterpriseuses · TechniqueT1105: Ingress Tool TransferEnterpriseuses · TechniqueT1547.001: Registry Run Keys / Startup FolderEnterpriseuses · TechniqueT1071.001: Web ProtocolsEnterpriseuses · TechniqueT1559.002: Dynamic Data ExchangeEnterpriseuses · TechniqueT1083: File and Directory DiscoveryEnterpriseuses · TechniqueT1016: System Network Configuration DiscoveryEnterpriseuses · TechniqueT1598.002: Spearphishing AttachmentEnterpriseuses · TechniqueT1027.010: Command ObfuscationEnterpriseuses · TechniqueT1059.001: PowerShellEnterpriseuses · TechniqueT1518: Software DiscoveryEnterpriseuses · TechniqueT1059.005: Visual BasicEnterpriseuses · TechniqueT1082: System Information DiscoveryEnterpriseuses · TechniqueT1119: Automated CollectionEnterprise
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
19.1
Object version
1.2
Created
Modified
Raw hash
c657657a434133f7...
Imported snapshots across ATT&CK releases(1)
ReleaseBundle importedObject versionModifiedStatusRaw hash
19.11.2Current bundlec657657a4341…
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.

Open mirrored raw JSONOpen MITRE-hosted copy
Source references

External references and citations

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

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    ATT Sidewinder January 2021

    Hegel, T. (2021, January 13). A Global Perspective of the SideWinder APT. Retrieved January 27, 2021.

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    Rattlesnake

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    Rattlesnake

    (Citation: Cyble Sidewinder September 2020)

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    T-APT-04

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