Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 7e5d93c1aa8742ad…

MALICIOUS

Office (OLE)

84.5 KB Created: 2010-01-27 16:06:00 Authoring application: Microsoft Word 11.5.5
MD5: a1c38e5e5d4f1b40a7b43099c3289a7a SHA-1: 59c1e425148872325960899b7cff098f52c7bb69 SHA-256: 7e5d93c1aa8742ad00fb7468d82c9285fde34454775eb4f56d0356ab25866fe5
180 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature 'Doc.Trojan.Thus-8'. It contains VBA macros, specifically a 'Document_Open' macro, which is a common technique for executing malicious code upon opening the document. The macro attempts to disable virus protection and potentially inject itself into other documents, suggesting it acts as a downloader or dropper for further malicious activity.

Heuristics 4

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
2f23ddd3d6f1ef886cf3ed642869de200e5704494ea5ed0782cfc25354ad0920		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2333 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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