Win.Trojan.Uka-1 — Office (OLE) malware analysis

Static analysis result for SHA-256 3fed23533485580c…

MALICIOUS

Office (OLE)

27.0 KB Created: 1601-01-01 00:00:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 6adfde8edbc9fa6bda01547b8d0ccb2d SHA-1: 5cf0ab33bfba4a01abcd5085c70ae11f28e5428e SHA-256: 3fed23533485580cb6a108aa6e4493dc0c05836ec1bc7e3740ca79cabf1dc1d9
100 Risk Score

Malware Insights

Win.Trojan.Uka-1 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The critical ClamAV detection identifies the file as Win.Trojan.Uka-1. Additionally, legacy WordBasic macro virus markers were found, suggesting the presence of malicious macros designed to execute arbitrary code. The document body contains what appears to be diary entries, but the core malicious functionality is indicated by the macro virus markers.

Heuristics 2

  • ClamAV: Win.Trojan.Uka-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Uka-1
  • Legacy WordBasic macro-virus markers high OLE_LEGACY_WORDBASIC_MACRO_VIRUS
    OLE Word document contains legacy WordBasic auto-execution macro markers such as AutoOpen plus ToolsMacro/MacroFile/fileMacro/globMacro or named historical macro-virus strings. These old Word 6/95 macro forms are not exposed as a modern VBA project, so normal VBA source extraction can miss them.