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

Static analysis result for SHA-256 7a403820dd632990…

MALICIOUS

Office (OLE) / .DOC

36.0 KB Created: 2010-08-30 15:49:00 Authoring application: Microsoft Macintosh Word
MD5: 075b9b719c5987ab522ddcd8174ffff7 SHA-1: 520ddd0a57efa07b83c5cd8294621d272d836710 SHA-256: 7a403820dd6329900e516fd92b3e8e5945e0637f7323d518e4f3551d546a52a3
182 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1547.001 Registry Run Keys / Startup Folder

The sample is a malicious OLE document containing a VBA macro that executes upon opening. The macro attempts to ensure its persistence by modifying the NormalTemplate and other open documents, and includes logic that suggests it may download additional content. The ClamAV detection 'Doc.Trojan.Thus-8' further supports its malicious nature. The presence of an unknown reputation URL also warrants attention.

Heuristics 5

  • ClamAV: Doc.Trojan.Thus-8 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-8
  • 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.
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.cre8ng.com
    • http://pubs.acs.org/ci/about.html
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a5c6a312d435fbe0dbbdb44a7eb4b8ca28801dadc0b47266138cf2d5f32abe40
vba-macro oletools.olevba.extract_macros (decoded VBA source) 2364 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely