Office (OLE) malware analysis — malicious · 578cd602f6e2b7a8

MALICIOUS

Office (OLE)

35.0 KB Created: 2010-01-14 22:22:00 Authoring application: Microsoft Word 11.2

MD5: 595dc9611352f70e07e7899c00a27cdf SHA-1: f6c0cc52c6ce36a8afc17d09aba3581f3c39ba31 SHA-256: 578cd602f6e2b7a8ea1acb4d2bc3f850768340084da043f9208d22d780fdf8f3

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-10. Static analysis detected VBA macros, specifically a Document_Open macro, indicating that the malicious payload is likely executed upon opening the document and enabling macros. The document body content is a distraction, presenting an article about helping children cope with natural disasters, to encourage macro execution.

Heuristics 4

ClamAV: Doc.Trojan.Thus-10 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Thus-10
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` `4598e951d875f86c73ce8ea9894a3ebd7233a4b22c485f3b95e8b275a48692e3`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2350 bytes
Detection ClamAV: Doc.Trojan.Thus-10 Obfuscation or payload: unlikely

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