G1037: TA577
TA577 is an initial access broker (IAB) that has distributed QakBot and Pikabot, and was among the first observed groups distributing Latrodectus in 2023.[1]
Security context for executives and security teams
G1037: TA577 describes [TA577](https://attack.mitre.org/groups/G1037) is an initial access broker (IAB) that has distributed [QakBot](https://attack.mitre.org/software/S0650) and [Pikabot](https://attack.mitre.org/software/S1145), and was among the first observed groups distributing [Latrodectus](https://attack.mitre.org/software/S1160) in 2023.(Citation: Latrodectus APR 2024)
Executive priority
G1037: TA577 is an official MITRE ATT&CK group. 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 G1037: TA577 by reviewing the official ATT&CK relationships, mapped tactics (the mapped ATT&CK tactic context), supported platforms (the platforms named in the official object), and available local telemetry before making detection or mitigation decisions.
Likely telemetry
- Official ATT&CK relationships and object metadata
Detection direction
- Validate whether G1037: TA577 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.
TA577
TA577 is an initial access broker (IAB) that has distributed QakBot and Pikabot, and was among the first observed groups distributing Latrodectus in 2023.[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 | T1059.007 | JavaScriptSub-technique | |
| Enterprise | T1059.003 | Windows Command ShellSub-technique | |
| Enterprise | T1027.009 | Embedded PayloadsSub-technique | |
| Enterprise | T1586.002 | Email AccountsSub-technique | |
| Enterprise | T1204.001 | Malicious LinkSub-technique | |
| Enterprise | T1566.002 | Spearphishing LinkSub-technique |
Groups, software, and campaigns
S1145: Pikabot
Pikabot is a backdoor used for initial access and follow-on tool deployment active since early 2023. Pikabot is notable for extensive use of multiple encoding, encryption, and defense evasion mechanisms to evade defenses and avoid analysis. Pikabot has some overlaps with QakBot, but insufficient evidence exists to definitively link these two malware families. Pikabot is frequently used to deploy follow on tools such as Cobalt Strike or ransomware variants.[1][2][3]
S0650: QakBot
S1160: Latrodectus
Latrodectus is a Windows malware downloader that has been used since at least 2023 to download and execute additional payloads and modules. Latrodectus has most often been distributed through email campaigns, primarily by TA577 and TA578, and has infrastructure overlaps with historic IcedID operations.[1][2][3]
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(3)
| Release | Bundle imported | Object version | Modified | Status | Raw hash |
|---|---|---|---|---|---|
| 20.0 | 1.0 | Current bundle | f194468f08df… | ||
| 19.2 | 1.0 | Older bundle | f194468f08df… | ||
| 19.1 | 1.0 | Older bundle | 822c6f11dd2f… |
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]Latrodectus APR 2024
Proofpoint Threat Research and Team Cymru S2 Threat Research. (2024, April 4). Latrodectus: This Spider Bytes Like Ice . Retrieved May 31, 2024.
Open source URL - [2]mitre-attackG1037Open source URL
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