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

Static analysis result for SHA-256 2e4da39dc4787616…

MALICIOUS

Office (OLE) / .DOC

39.5 KB Created: 2001-09-20 08:59:00 Authoring application: Microsoft Word 8.0
MD5: 717b4a63fd935e955fe95d5419f2a00a SHA-1: 5b5a4f73b7c421f74a12ec9d22ed4863e1ab255c SHA-256: 2e4da39dc4787616b9a2e00fb2a635dd6ae275c817482fab973f52d398cf706f
240 Risk Score

Malware Insights

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

The sample is a Microsoft Word document containing a VBA macro. The macro utilizes the Shell() function, indicating it attempts to execute external commands or programs. The document body provides seemingly innocuous instructions for using tables in Word, likely as a lure. The presence of 'macros.bas' and the critical 'OLE_VBA_SHELL' heuristic strongly suggest the VBA macro 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.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
12be686874702e054e8be799c5f384a221812c77d66b07a5bf6558ce5087835b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 23986 bytes
Detection
ClamAV: Doc.Trojan.Marker-1
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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