Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 f48f4074e1baf4c2…

MALICIOUS

Office (OLE)

33.0 KB Created: 2009-05-05 14:55:00 Authoring application: Microsoft Word 11.5.3
MD5: 8c003fc3419ee761cc9d830664b62cd2 SHA-1: fb3b2d9233885e297aaa5fd57153ec812d84472f SHA-256: f48f4074e1baf4c2f30acba3b5b813b9fe4a698f0695a4a10c028784b05e5fcc
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell

The sample is a Microsoft Word document containing embedded VBA macros. A critical heuristic firing indicates the presence of a Shell() call within the VBA code, suggesting an attempt to execute external commands or payloads. The document body presents a geography quiz, likely serving as a lure to trick the user into enabling macros. The extracted artifact 'macros.bas' is the VBA macro source. The presence of Shell() and the macro execution strongly suggests the document is designed to download and execute a second-stage payload.

Heuristics 5

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Trojan.Ded-3 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Ded-3
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
3fb31a7b623b9ab9176b649eec9cddc2126400e441a07d4c71ca37b1e42fc9f1
vba-macro oletools.olevba.extract_macros (decoded VBA source) 3904 bytes
Detection
ClamAV: Doc.Trojan.Ded-1
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.