Office (OLE) malware analysis — malicious · 261caab4cf8a0d7a

MALICIOUS

Office (OLE)

75.5 KB Created: 2010-04-19 01:35:00 Authoring application: Microsoft Word 11.3.5

MD5: 84ae762b3e4f13f559d495fd5ee2e491 SHA-1: 9b00a4d839bd9db34839863adfd97e9d48278557 SHA-256: 261caab4cf8a0d7a7e3fbf5784c842a370596e8d36036e3e6628fcf36c68d335

188 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file is an Office document containing a VBA macro, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening. The ClamAV heuristic identifies the file as 'Doc.Trojan.Thus-7', indicating a known malicious document. The document body presents a seemingly innocuous news story about a Pepsi event to encourage macro execution. The VBA macro is likely responsible for downloading and executing a second-stage payload, as suggested by the critical ClamAV detection on an extracted artifact.

Heuristics 5

ClamAV: Doc.Trojan.Thus-7 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Thus-7
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
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `c6b2c6670c2f43fc06a5bbad9e129fbd6eef2f67ac3b7f459ce6241e3f13568b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18976 bytes
Detection ClamAV: Doc.Trojan.Thus-7 Obfuscation or payload: unlikely

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