Office (OLE) / .DOCX malware analysis — malicious · 241da35fc47abf50

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 9549ee86f57b8a65c9c151da32b47429 SHA-1: d01950b656daf83c77fdbc17f0bc803c7adb856a SHA-256: 241da35fc47abf50c83032be9bdb0df27d81d7d1920055a76b7a84aedeb8a30d

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.005 Visual Basic

The file is a malicious OLE document containing a large VBA macro. The macro is triggered by the Document_Open event and uses CreateObject to execute PowerShell commands. The presence of the 'macros.bas' artifact and the ClamAV detection strongly indicate malicious intent. The obfuscated document body text appears to be a string of PowerShell commands, suggesting the macro's purpose is to download and execute 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` `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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