Office (OLE) / .DOC malware analysis — malicious · 9a4a4f2abd7a81fe

MALICIOUS

Office (OLE) / .DOC

162.7 KB Created: 2021-01-12 15:16:00 Authoring application: Microsoft Office Word

MD5: 5b6b9fcdd86ba8065964a193e02e5b38 SHA-1: a30789759c98d802192dcc1998794c20314b6460 SHA-256: 9a4a4f2abd7a81fe73803fe7ecb6acdc38ba77b131256272a9d6f66fb0696e5f

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, indicate a malicious downloader. The presence of a VBA macro in the 'macros.bas' artifact, combined with the auto-execution heuristic, strongly suggests that the script is designed to run automatically upon opening the document. This script likely downloads and executes a second-stage payload, a common tactic for malware distribution.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
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` `9903c97f82d4c5337bd2323ee89599175ae60759abf4f128ab8c8dd0806f85fd`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	7309 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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