Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ea9f2182df51f52c…

MALICIOUS

Office (OLE)

9.0 KB Created: 1997-04-23 17:16:00 Authoring application: Microsoft Word 6.0 First seen: 2012-06-14
MD5: 2ab1c0e13a263adba4857cfc9e336868 SHA-1: 1e397cb6f286c3fff0f98fe51d42bbec260fe9be SHA-256: ea9f2182df51f52c244c5bc616c60671c24e7fc6efb580c681dfa0a105a5ede6
80 Risk Score

Malware Insights

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

The sample is an OLE document containing legacy WordBasic macros, indicated by the 'OLE_LEGACY_WORDBASIC_AUTOEXEC' heuristic firing on the 'AutoOpen' marker. The presence of 'KILLOK!' and repeated references to 'Killok' in the document body suggest a specific malware name or identifier. The 'AutoOpen' macro is designed to execute automatically when the document is opened, a common technique for delivering malicious payloads. ClamAV also detected this file as Win.Trojan.Kilok-4.

Heuristics 2

  • ClamAV: Win.Trojan.Kilok-4 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Kilok-4
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.

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