Office (OLE) / .DOC malware analysis — malicious · 5481ce108011c92d

MALICIOUS

Office (OLE) / .DOC

124.0 KB Created: 2021-09-06 02:16:00 Authoring application: Microsoft Office Word

MD5: 0760f1a4e6a892382abf9ed97adee26d SHA-1: 70fe2e62f7ee5bf8303dd3b27fc664f535ac6ee1 SHA-256: 5481ce108011c92dbc2b8a4a1f34ec001d79632acf3bfa9b81ccd403074ac3c1

262 Risk Score

Malware Insights

MITRE ATT&CK

T1547.001 Registry Run Keys / Startup Folder T1059.005 Visual Basic T1564.004 Disable or Modify Tools

The sample is a malicious Word document containing VBA macros. The macros are designed to disable security features and modify the Normal template to achieve persistence. Specifically, the script attempts to set the macro security level to low and modifies the 'Empirical' module in both the active document and the Normal template. This behavior is indicative of a macro-based malware dropper aiming for persistent execution.

Heuristics 7

ClamAV: Win.Trojan.Psycho-3 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Psycho-3
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.
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `d19a16bd92ecce4cb926350a233408c214785aa1062c88bb53795d8f8c8ce1d4`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5897 bytes
Detection ClamAV: Doc.Trojan.Melissa-12 Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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