Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 4c990866fa9aa9a9…

MALICIOUS

Office (OLE)

40.5 KB Created: 2001-12-27 21:34:00 Authoring application: Microsoft Word 10.0
MD5: d72be32434b5d68bb9f20af77babcca9 SHA-1: a837aa09695e00a40f8300b38c6d27b08b399f4d SHA-256: 4c990866fa9aa9a9a668f63ace5feb093b985de0bce09bcc6e8f8d98b8fc3b9e
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.Model-2'. It contains VBA macros, specifically an AutoOpen macro, which is a common technique for executing malicious code upon opening a document. The document body is crafted to appear as an official municipal form, likely to trick the user into enabling macros and executing the payload.

Heuristics 4

  • ClamAV: Doc.Trojan.Model-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Model-2
  • 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.
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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
ac4aa2fefd295e36a2e231841f94e1bc94eae898f2c0e05cfbb470652ecc3447		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1450 bytes
Detection
ClamAV: Doc.Trojan.Model-2
Obfuscation or payload: unlikely

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