Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 a03a40126e825ba0…

MALICIOUS

Office (OLE) / .DOC

40.5 KB Created: 2010-09-06 10:21:00 Authoring application: Microsoft Word 11.6.0
MD5: 3b054d8c9b970e75dfbf371063744f72 SHA-1: cbdc4fc41a989774f840a9edea93092ef7b4a388 SHA-256: a03a40126e825ba04d1992625b0a6425c7e325191063215fa451a19186114107
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1059 Command and Scripting Interpreter

The file is a malicious Microsoft Word document containing VBA macros. The critical heuristic 'OLE_VBA_SHELL' indicates that the macros attempt to execute commands via the Shell() function. The document body presents a list of prominent figures for a restoration project, likely a social engineering tactic to encourage macro execution. No specific malware family could be identified, but the presence of VBA macros and the use of Shell() suggest a downloader or initial execution stage.

Heuristics 5

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Trojan.Marker-31 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Marker-31
  • 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
3c1f2fd5b88a94cd8948d5026a574d0690b90c39541d24531e136fa3b5cb3774
vba-macro oletools.olevba.extract_macros (decoded VBA source) 6026 bytes
Detection
ClamAV: Doc.Trojan.Marker-3
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.