Office (OLE) / .DOCX malware analysis — malicious · 337c448330447e39

MALICIOUS

Office (OLE) / .DOCX

150.1 KB Created: 2020-09-24 10:05:00 Authoring application: Microsoft Office Word

MD5: 74152cafd81191ac51a1a94a23347bc5 SHA-1: b9ddec6fb23f7836a5c180d64c34d6a577ea8dde SHA-256: 337c448330447e39dbdc41539c6dc162aabc8ea6f9a703187bf2e2e3cd7f49f9

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a malicious Office document containing a VBA macro that automatically executes upon opening. The macro utilizes CreateObject and p-code execution, indicating it is designed to perform actions beyond simple document manipulation. The presence of the 'macros.bas' artifact and the ClamAV detection strongly suggest this macro is intended to download and execute a second-stage payload. The obfuscated document body content, while unreadable, does not contradict this assessment.

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` `b39e572cf96864edb4f5c39daa3a8388f74111156690860ca53002be67bbf3ff`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	20583 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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