Office (OLE) / .DOC malware analysis — malicious · cd4a56b44b37b429

MALICIOUS

Office (OLE) / .DOC

35.0 KB Created: 2001-09-21 08:16:00 Authoring application: Microsoft Word 8.0

MD5: 7712e2365bd4308267e69e3443411c54 SHA-1: f2b70b68b38993a973c9f87509a0a47dec3194df SHA-256: cd4a56b44b37b4291d0cdfec3cdff1c4e11f28ff9cafce0c0ec8b7226678609a

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1566.001 Spearphishing Attachment

The file is a Microsoft Word document containing VBA macros, specifically triggering AutoOpen and Auto_Close events. ClamAV detections indicate it is a known trojan. The document body presents a plausible school calendar to deceive the user into opening it, while the embedded macros are likely responsible for the malicious payload execution.

Heuristics 5

ClamAV: Doc.Trojan.Class-37 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Class-37
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.
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
Auto_Close macro high OLE_VBA_AUTOCLOSE

Auto_Close 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` `808a75f194380f1fe83a99479388b09829125283f977c6cae08480942430c0f0`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	13810 bytes
Detection ClamAV: Doc.Trojan.Class-5 Obfuscation or payload: unlikely

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