Office (OLE) / .DOC malware analysis — malicious · bbbd5382e8381270

MALICIOUS

Office (OLE) / .DOC

60.5 KB Created: 2000-07-11 14:21:00 Authoring application: Microsoft Word 9.0

MD5: b8938ca8ca56c8dcb4a2b14908e33cd6 SHA-1: be2e2438b35af32d143e51aeeca191189b3c55e8 SHA-256: bbbd5382e838127094a6227b9ea4aab7b4f01c0a6a2eaedd8093a56b5242f63a

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell

The file contains VBA macros, and a critical heuristic indicates the use of the Shell() function, suggesting an attempt to execute arbitrary commands. The presence of 'macros.bas' and ClamAV detections like 'Doc.Trojan.Marker-31' further confirm malicious intent. The primary goal appears to be downloading and executing a second-stage payload, as indicated by the Shell() call and the suspicious extracted artifact.

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.

Filename	Kind	Source	Size
`macros.bas` `b9acdae43c8c33294d2f2666eb7e2c82be6060c4386f5bc00ce68813ff188631`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6463 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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