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

Static analysis result for SHA-256 23b52e56b6dcbc06…

MALICIOUS

Office (OLE) / .DOC

43.5 KB Created: 2010-06-25 08:38:00 Authoring application: Microsoft Word 10.1
MD5: 45a064294ffba1c89d923dd9623deb6f SHA-1: b3dadf6fb69fc91d94f4748b4a58edd9c4cb4202 SHA-256: 23b52e56b6dcbc06ca008542fd351cff5c83a2b13b134688837e77fd2ed82a8a
240 Risk Score

Malware Insights

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

The sample is a malicious Word document containing VBA macros. The critical heuristic OLE_VBA_SHELL indicates that the macro attempts to execute a command via the Shell() function. This suggests the macro is designed to download and execute a second-stage payload. The embedded URL is likely part of this malicious chain.

Heuristics 6

  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.studienstiftungsaar.de

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
d61fe873d3137eeb6976deadfbc9afc494c3f5edd90ac5302504a545d06a5fe5		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 5628 bytes
Detection
ClamAV: Doc.Trojan.Marker-3
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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