S0382: ServHelper
ServHelper is a backdoor first observed in late 2018. The backdoor is written in Delphi and is typically delivered as a DLL file.[1]
Security context for executives and security teams
S0382: ServHelper describes [ServHelper](https://attack.mitre.org/software/S0382) is a backdoor first observed in late 2018. The backdoor is written in Delphi and is typically delivered as a DLL file.(Citation: Proofpoint TA505 Jan 2019)
Executive priority
S0382: ServHelper 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 S0382: ServHelper 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 S0382: ServHelper 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.
ServHelper
ServHelper is a backdoor first observed in late 2018. The backdoor is written in Delphi and is typically delivered as a DLL file.[1]
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.
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.
| Domain | ID | Name | Relationship / procedure |
|---|---|---|---|
| Enterprise | T1059.003 | Windows Command ShellSub-technique | ServHelper can execute shell commands against cmd.[1]CitationDeep Instinct TA505 Apr 2019 |
| Enterprise | T1573.002 | Asymmetric CryptographySub-technique | ServHelper may set up a reverse SSH tunnel to give the attacker access to services running on the victim, such as RDP.[1] |
| Enterprise | T1071.001 | Web ProtocolsSub-technique | ServHelper uses HTTP for C2.[1] |
| Enterprise | T1105 | Ingress Tool Transfer | ServHelper may download additional files to execute.[1]CitationDeep Instinct TA505 Apr 2019 |
| Enterprise | T1136.001 | Local AccountSub-technique | ServHelper has created a new user named "supportaccount".[1] |
| Enterprise | T1082 | System Information Discovery | ServHelper will attempt to enumerate Windows version and system architecture.[1] |
| Enterprise | T1021.001 | Remote Desktop ProtocolSub-technique | ServHelper has commands for adding a remote desktop user and sending RDP traffic to the attacker through a reverse SSH tunnel.[1] |
| Enterprise | T1547.001 | Registry Run Keys / Startup FolderSub-technique | ServHelper may attempt to establish persistence via the |
| Enterprise | T1059.001 | PowerShellSub-technique | ServHelper has the ability to execute a PowerShell script to get information from the infected host.CitationTrend Micro TA505 June 2019 |
| Enterprise | T1036.010 | Masquerade Account NameSub-technique | ServHelper has created a new user named `supportaccount`.[1] |
| Enterprise | T1033 | System Owner/User Discovery | ServHelper will attempt to enumerate the username of the victim.[1] |
| Enterprise | T1218.011 | Rundll32Sub-technique | ServHelper contains a module for downloading and executing DLLs that leverages |
| Enterprise | T1070.004 | File DeletionSub-technique | ServHelper has a module to delete itself from the infected machine.[1]CitationDeep Instinct TA505 Apr 2019 |
| Enterprise | T1053.005 | Scheduled TaskSub-technique | ServHelper contains modules that will use schtasks to carry out malicious operations.[1] |
| Enterprise | T1098.007 | Additional Local or Domain GroupsSub-technique | ServHelper has added a user named "supportaccount" to the Remote Desktop Users and Administrators groups.[1] |
Groups, software, and campaigns
All related ATT&CK context
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.
Imported snapshots across ATT&CK releases(2)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 19.2 | 1.2 | Current bundle | 6c6758e8904b… | ||
| 19.1 | 1.2 | Older bundle | 6c6758e8904b… |
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.
External references and citations
MITRE external references are preserved separately from Glexia analysis so citations remain traceable to their original source records.
- [1]Proofpoint TA505 Jan 2019
Schwarz, D. and Proofpoint Staff. (2019, January 9). ServHelper and FlawedGrace - New malware introduced by TA505. Retrieved May 28, 2019.
Open source URL - [2]mitre-attackS0382Open source URL
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