Office (OLE) malware analysis — malicious · b2bde1c3144ba62f

MALICIOUS

Office (OLE)

121.5 KB Created: 2010-04-01 09:42:00 Authoring application: Microsoft Word 11.0

MD5: 183095c91206302f37c1cb42f356031c SHA-1: 8dd1e70d9e74e44471c8ae3a3228db0a7f4f13b9 SHA-256: b2bde1c3144ba62f402ac5bb74c9422f286f0c0d968e0652acf851400dabc1d8

180 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening. The document body presents a fake grade sheet, suggesting a social engineering lure to trick the user into enabling macros. The ClamAV detection 'Doc.Trojan.Thus-8' further confirms its malicious nature. The primary intent appears to be the execution of a second-stage payload, although the specific mechanism is not detailed in the provided evidence.

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` `1a56668f34cf321ac0d3ce005b3740d1d618a4070cc820b10a01bd1c862827fe`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2372 bytes
Detection ClamAV: Doc.Trojan.Thus-8 Obfuscation or payload: unlikely

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