Office (OLE) malware analysis — malicious · 877e57130577319f

MALICIOUS

Office (OLE)

45.5 KB Created: 2010-06-01 19:17:00 Authoring application: Microsoft Word 11.5.5

MD5: d537d24afdfa8d531d8165502dea106f SHA-1: b932277a720f133ed6d0db8fb9bce43a55b6cce6 SHA-256: 877e57130577319fe05df441a2b830f02f6be1d203b753bb44be9acf8a904fc2

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 multiple high-severity detections, including 'Doc.Trojan.Marker-40' and 'Doc.Trojan.Marker-2'. It contains VBA macros, specifically a 'Document_Open' macro, which is a common technique for executing malicious code upon opening the document. The document body presents a seemingly innocuous educational task about dinosaur tracks, likely serving as a lure to engage the user and bypass security awareness. The presence of the Document_Open macro indicates an attempt to automatically run code, potentially to download further payloads or establish persistence.

Heuristics 4

ClamAV: Doc.Trojan.Marker-40 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Marker-40
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` `986aef5948901faa8d5657818f288375a24bffe225d479d13799be5175189208`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4216 bytes
Detection ClamAV: Doc.Trojan.Marker-2 Obfuscation or payload: unlikely

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