Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 333af40f67be6dc7…

MALICIOUS

Office (OLE)

49.0 KB Created: 1999-05-08 04:46:00 Authoring application: Microsoft Word 8.0
MD5: 054aa62a34cb97c9268e41bf2b77d0a2 SHA-1: 16d82ca98de2b6b4138fc4e00d7761a7c677231c SHA-256: 333af40f67be6dc7ebe49ba4da614dd0a3d3f8afe11a891abaa823ff05a011af
220 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with multiple critical detections (Doc.Trojan.Class-37, Doc.Trojan.Class-1). The presence of VBA macros, specifically AutoOpen and Auto_Close, indicates that malicious code is designed to execute automatically when the document is opened or closed. The document body contains text discussing religious and ideological beliefs, which appears to be a social engineering lure to mask the malicious intent of the embedded VBA macros.

Heuristics 5

  • ClamAV: Doc.Trojan.Class-37 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Class-37
  • 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
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close 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
ec2baf0bc4b587cd1cf3a2577b2bee9124614c970db31d40666f2413c8b36d76		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20049 bytes
Detection
ClamAV: Doc.Trojan.Class-1
Obfuscation or payload: unlikely

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