Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a86dc1a6973a662a…

MALICIOUS

Office (OLE)

35.5 KB Created: 2010-02-10 11:23:00 Authoring application: Microsoft Word 8.0
MD5: 91f91b897bb4e84435092ba04a1b9e76 SHA-1: 9f32a4b215f2b3b24a14070cbc68b52cd757a795 SHA-256: a86dc1a6973a662af5a2e877652a06254451c53361bc99fc5b1630fefcfe9aa6
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The document contains VBA macros, indicated by the OLE_VBA_MACROS heuristic and the presence of the macros.bas artifact. ClamAV detections (Doc.Trojan.Ethan-20 and Doc.Trojan.Ethan-1) confirm the malicious nature of the file. The document body, written in Russian, presents a fake quotation request for computer equipment, suggesting a social engineering lure. The specific intent of the VBA macros could not be determined due to obfuscation or truncation, but their presence in a document with a clear social engineering theme points towards a delivery mechanism for malicious payloads.

Heuristics 3

  • ClamAV: Doc.Trojan.Ethan-20 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Ethan-20
  • 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
abeef0a93f67015ff7fb666ed2c12a01245194a29bb20281b2c658b4f896ec45		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6272 bytes
Detection
ClamAV: Doc.Trojan.Ethan-1
Obfuscation or payload: unlikely

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