trojan.leopard/bitsuh
Hunt this family in your stack
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
Groups observed using it
3 distinct threat actors attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
The LNK fleet extends beyond the three publicly-named lures with VT-attested Mar–Apr 2026 siblings labelled trojan.leopard/bitsuh ... MALWARE trojan.leopard/bitsuh
The LNK fleet extends beyond the three publicly-named lures with VT-attested Mar–Apr 2026 siblings labelled trojan.leopard/bitsuh ... MALWARE trojan.leopard/bitsuh
The LNK fleet extends beyond the three publicly-named lures with VT-attested Mar–Apr 2026 siblings labelled trojan.leopard/bitsuh ... MALWARE trojan.leopard/bitsuh
Techniques & procedures
17 distinct techniques documented for this family, organized by ATT&CK tactic.
Initial Access
1 techniqueT1566.001 — Spearphishing Attachment ( .lnk Cyrillic-themed lures)
Execution
6 techniquesPersistence
3 techniquesPrivilege Escalation
3 techniquesStealth
8 techniquesT1027 — Obfuscated Files or Information (decoy- <table> padding, chr-chain, gzip)
T1036.005 — Masquerading: Match Legitimate Name (Plane9 visualizer, Bitdefender deployer covers)
T1140 — Deobfuscate/Decode Files or Information ( $hCYip AES key + gunzip)
T1574.001 — DLL Search Order Hijacking (search-order variant on Bitdefender path)
T1620 — Reflective Code Loading (.NET assembly via Assembly.Load )
Command and Control
3 techniquesT1090.001 — Internal Proxy (multicast UDP 224.0.0.255:31339 + TCP :31339 )
T1105 — Ingress Tool Transfer ( bitsadmin fetch of HTA + ZIP)
T1573.001 — Encrypted Channel: Symmetric Cryptography (AES-256-CBC null IV)
IOCs tracked for this family
15 indicators attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.
IPs, domains, and DNS infrastructure linked to this family.
File hashes (MD5, SHA-1, SHA-256) from samples and reports.
Recent activity
2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
The version that knows your environment.
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.