Office (OLE) / .DOC malware analysis — malicious · bf7601165acc92c7

MALICIOUS

Office (OLE) / .DOC

47.5 KB Created: 2000-06-13 16:55:00 Authoring application: Microsoft Word 8.0

MD5: 1f15a22e5c80db05c61619dc3106845f SHA-1: 248e0c464b1718f355272435f8b2d31de0071154 SHA-256: bf7601165acc92c7233325ad903f22af7d0b5e383cf8b19eed880b2ec22b51f6

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell

The OLE document contains VBA macros that utilize the Shell() function, indicating an attempt to execute arbitrary code. The presence of 'macros.bas' and ClamAV detections further confirm its malicious nature. The document body content is unrelated to the malicious functionality.

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.
OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY

OLE file is 48,640 bytes but its declared streams total only 28,364 bytes — 20,276 bytes (42%) live in unallocated sector slack. This is the canonical hiding place for pre-macro-era Office exploit payloads (XOR-encoded shellcode reached via a parser pointer-corruption bug in the document structure).
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` `7aefc65b0c3ecb25e28eaef99b3bedd06540ee5e8faf3508e2583e16644cd3d8`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5533 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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