Office (OLE) / .DOC malware analysis — malicious · 99857fbf70a8f28c

MALICIOUS

Office (OLE) / .DOC

239.8 KB

MD5: 38d07bc6ec4567b4a096b3b4b7f2878e SHA-1: c053535f0b1f38e78a2ceaa3b721e2b0339e215d SHA-256: 99857fbf70a8f28cea7e04d87e230a5ac8003391f929a597df5f173b6aba145b

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initiating malicious activity upon opening the document. The presence of CreateObject calls and p-code execution further indicates malicious intent. ClamAV detection as 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download and execute a secondary payload. No specific family could be identified, but the overall behavior points to a downloader.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
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` `46bbf753c021dd824889110da33bb354da3f9a617de0713dd50b52c1bcf8132b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18397 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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