Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a1f8b30eca787d4b…

MALICIOUS

Office (OLE)

51.5 KB Created: 2010-01-19 22:18:00 Authoring application: Microsoft Word 11.5.6
MD5: 1bd4c3de33b6c41609d55a593d236c44 SHA-1: d74c396d3f58c4d1bde5fa010fb4343f20d003cb SHA-256: a1f8b30eca787d4b96d2c288ae82548d01f5e9f1311cf1107ce97c82e65f7cff
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The presence of the 'Doc.Trojan.Thus-10' ClamAV signature indicates malicious intent. The document body presents what appears to be a resume, a common lure to trick users into enabling macros. The Document_Open macro likely executes a payload to download and run further malicious code.

Heuristics 4

  • ClamAV: Doc.Trojan.Thus-10 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-10
  • 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
d3c77c30c95cbb7492059d7dfb966f961e7d2b4e1440494b786f8f836b4ce32b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2238 bytes
Detection
ClamAV: Doc.Trojan.Thus-10
Obfuscation or payload: unlikely

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