Office (OLE) / .DOC malware analysis — malicious · 31c643f83844854c

MALICIOUS

Office (OLE) / .DOC

42.5 KB Created: 2020-05-15 00:06:00 Authoring application: Microsoft Office Word

MD5: 3340d0cf17295c37b01fd8d520bdaa1f SHA-1: 3cc520651eb2ea3c36ca6a1560a5b8ac049b84b4 SHA-256: 31c643f83844854c50f7123aea8ebefc94e71de934ed9b5bd005269824e85261

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1140 Deobfuscate or Obfuscate

The sample is a Microsoft Office document containing VBA macros. Heuristics indicate the presence of macros designed to execute code, with a high-severity alert for 'certutil', suggesting a download or decode capability. The 'CreateObject' call further supports the execution of arbitrary code. The macros likely facilitate the download and execution of a second-stage payload, indicated by the 'certutil' reference.

Heuristics 6

Reference to certutil (download/decode) high SC_STR_CERTUTIL

Reference to certutil (download/decode)
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
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
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)
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` `bc699709a267b6acee8961e84fae49e550ede2532aae690b8bb19185d019353f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2107 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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