Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 9427d0789387bb7c…

MALICIOUS

Office (OLE)

40.0 KB Created: 2005-10-01 17:24:00 Authoring application: Microsoft Word 9.0
MD5: 90acd17e9c4d2fcd3a77301dc9f96ab2 SHA-1: 94e05fd297c64c222b0fb7aa22ef84840297b3e3 SHA-256: 9427d0789387bb7c5373c731f34da1b04a78fd7ac698be9d30094ee433d7d6a3
228 Risk Score

Malware Insights

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

The sample contains VBA macros, specifically an AutoOpen macro, which is a common technique for executing malicious code upon opening a document. The document body presents links to academic and economic resources, likely as a lure to disguise the malicious intent. The presence of an AutoOpen macro suggests the script's purpose is to execute automatically, potentially downloading further payloads or performing other malicious actions. ClamAV detections further corroborate the malicious nature of the file.

Heuristics 7

  • ClamAV: Doc.Trojan.WordDigger-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.WordDigger-1
  • 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.
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.iet.ru/afe/eaae/index.html
    • http://www.iet.ru
    • http://www.iamo.de
    • http://www.ecsocman.edu.ru
    • http://www.agnr.umd.edu

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
85f59860f1dab588fa64cc71b55d513e81ed12e3a2f7729d8fe9f46fcbd5ed11		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4579 bytes
Detection
ClamAV: Doc.Trojan.WordDigger-1
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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