Office (OLE) malware analysis — malicious · 2b9cc5fe46c6c976

MALICIOUS

Office (OLE)

34.5 KB Created: 2005-08-16 22:21:00 Authoring application: Microsoft Word 11.1

MD5: 2da3375f2b1f3f67f6ce2f8f38c8290f SHA-1: 0ddfc8fabc32b1c54aac5e7446021b7a0ddcfef9 SHA-256: 2b9cc5fe46c6c9767f8063a0a9fb4a4d69dfdca640710f43df6cb28502b77749

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature 'Doc.Trojan.Thus-8'. Static analysis detected VBA macros, and specifically a 'Document_Open' macro, indicating that malicious code executes automatically upon opening the document. The document body presents a math worksheet, which serves as a lure to distract the user from the malicious activity. No specific malware family could be confidently identified.

Heuristics 4

ClamAV: Doc.Trojan.Thus-8 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Thus-8
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `6cebe72d9808313a9c55b49f01ada15b0e62478f34b48b3401c5c81cdbefb331`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2337 bytes
Detection ClamAV: Doc.Trojan.Thus-8 Obfuscation or payload: unlikely

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