Office (OLE) malware analysis — malicious · 195cd5994f7542bc

MALICIOUS

Office (OLE)

31.0 KB Created: 2008-07-03 07:19:00 Authoring application: Microsoft Word 10.1

MD5: 6bd382a0cb57a0d31684342c36a6091b SHA-1: b8069b7a6310036b7e58ecd85236ae466c13c993 SHA-256: 195cd5994f7542bc4145d4a08d261b24966cb90f9c404782b003906b9f37cac4

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The file is identified as malicious by ClamAV with the signature Doc.Trojan.Thus-8. It contains a VBA macro that executes upon opening the document, as indicated by the 'Document_Open' macro firing. The macro's primary function appears to be to copy itself to the Normal template and potentially download and execute a secondary payload, although the full script is truncated.

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` `4df551cb2b0879a817345c189fe8c0a03f39972c7a828ff9007bb5f16dd9f09a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2319 bytes
Detection ClamAV: Doc.Trojan.Thus-8 Obfuscation or payload: unlikely

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