Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 8b8f397e419ad06f…

MALICIOUS

Office (OLE) / .DOC

51.5 KB Created: 2000-09-12 17:48:00 Authoring application: Microsoft Word 8.0
MD5: 023dba2b07c3aae975a572d6a1613f99 SHA-1: 2ee8b0139a4e6d2c991bc051c3e298923c5db644 SHA-256: 8b8f397e419ad06f503928214e03b638f48f9a281e9309468d2663f309a419ae
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is a Microsoft Word document containing VBA macros, as indicated by multiple OLE and VBA heuristic firings. The document body explicitly warns of a macro virus, suggesting a social engineering lure. The presence of 'CreateObject' and 'GetObject' calls within the VBA macros, along with the ClamAV detection of 'Doc.Trojan.Tristate-1' on an extracted artifact, strongly suggests the macros are designed to download and execute a malicious payload. No specific family could be identified, but the delivery mechanism is clearly macro-based.

Heuristics 6

  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 52,736 bytes but its declared streams total only 18,572 bytes — 34,164 bytes (65%) live in unallocated sector slack. This is the canonical hiding place for pre-macro-era Office exploit payloads (XOR-encoded shellcode reached via a parser pointer-corruption bug in the document structure).
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
28bddf8ef6f90abb80f9eefe64649ae18587fde0fa3bc3c18e805821819aaf91
vba-macro oletools.olevba.extract_macros (decoded VBA source) 9421 bytes
Detection
ClamAV: Doc.Trojan.Tristate-1
Obfuscation or payload: likely
Carved artifact contains 12 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.