Office (OLE) / .DOC malware analysis — malicious · 33c770f81db66721

MALICIOUS

Office (OLE) / .DOC

153.9 KB Created: 2020-09-24 05:47:00 Authoring application: Microsoft Office Word

MD5: 338e3177f47e95594367ec15c5d59376 SHA-1: 9f7d01493373248e1d77ee33f66a9907a5fd65d2 SHA-256: 33c770f81db667213e95c2c605c64bbb8aaedd59dc212d411eee46171f3020a3

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject to execute code. The presence of the 'macros.bas' artifact and the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic indicate that the VBA code is designed to auto-execute upon opening the document. The document body appears to be heavily obfuscated or corrupted, but the heuristics strongly suggest the execution of a PowerShell command, likely to download and run a second-stage payload.

Heuristics 7

ClamAV: Doc.Trojan.Agent-9765752-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Agent-9765752-0
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` `b0798fb7450882311ba60b57e039433588cb794c6cc8a10f75d1de73c5c7973a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19490 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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