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Malware

Trojan.Siggen31.34463

Trojan.Siggen31.34463 is a trojan written in the Go programming language. According to the provided content, it is designed to download additional malware onto infected systems, specifically various miner trojans and adware. It is described as a DLL file located at %appdata%\utorrent\lib.dll and is launched by exploiting a DLL Search Order Hijacking vulnerability/class issue in the uTorrent torrent client. The content lists it among common threats observed by Dr.Web in late 2025 and Q1 2026. High-confidence indicators and artifacts directly mentioned include the malware name Trojan.Siggen31.34463, its file path %appdata%\utorrent\lib.dll, its use of the Go programming language, its downloader behavior for miner trojans and adware, and its execution via DLL Search Order Hijacking in uTorrent. No specific threat actor, industry targeting, or additional infrastructure is identified in the provided content.

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MITRE ATT&CK

Techniques & procedures

2 distinct techniques documented for this family, organized by ATT&CK tactic.

Execution

1 technique
T1574.001DLLEvidence1

To launch, it exploits a DLL Search Order Hijacking vulnerability in the uTorrent torrent client.

Stealth

1 technique
T1574.001DLLEvidence1

To launch, it exploits a DLL Search Order Hijacking vulnerability in the uTorrent torrent client.

Command and Control

1 technique
T1105Ingress Tool TransferEvidence1

Trojan.Siggen31.34463 A trojan written in the Go programming language and designed to download various miner trojans and adware into infected systems.

ACTIVITY FEED

Recent activity

3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

3 SOURCESView more in app
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IOC matching

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Threat actor attribution

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

MITRE ATT&CK mapping2

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.