Office (OLE) / .DOC malware analysis — malicious · c0e687ab86de520b

MALICIOUS

Office (OLE) / .DOC

89.4 KB Created: 2020-12-29 06:48:00 Authoring application: Microsoft Office Word

MD5: 1ec1cdceee0b2a9e3f4502f6b44d3e61 SHA-1: f22a2be96aeea6b81fd111c8803957bcd96b76e8 SHA-256: c0e687ab86de520b0f233655a9523fa2c0308bb248337bfb0ecbe9cebbdfb1a7

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1140 Deobfuscate or Obfuscate Malicious Code

The sample contains VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. This indicates the macro is designed to run automatically when the document is opened. The obfuscated document body and the presence of a VBA macro suggest the intent is to download and execute a second-stage payload. The specific obfuscation techniques used in the document body are complex and difficult to fully decipher, but the overall pattern is consistent with macro-based malware delivery.

Heuristics 6

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` `ee8ec4fa15ad6eb2ac2bf070761ccf080e3c94ec90e0c1c54b34fa827ebaa511`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	8326 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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