Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 23f38fc5181e3cb3…

MALICIOUS

Office (OLE)

53.0 KB Created: 2002-02-14 01:03:00 Authoring application: Microsoft Word 9.0
MD5: 95a218984f77b940c713b366ca724d42 SHA-1: cf699a5cb369faa8c44182bce9aae34b8dc1fbb1 SHA-256: 23f38fc5181e3cb35bfad112df3a6e5e8fdb0e8dd091a86098db7c95a0cae113
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

The sample is a Microsoft Word document containing VBA macros. The macros utilize the Shell() function, indicating an attempt to execute external commands or scripts. The document body, despite containing garbled characters, presents a form for a 'SUMMER RESEARCH OPPORTUNITY PROGRAM' which is a common lure for phishing attacks. The presence of a VBA macro and the Shell() call strongly suggest the execution of malicious code, likely to download further payloads or steal information. The embedded URL is also a potential indicator of compromise.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Trojan.Marker-31 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Marker-31
  • 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.
  • 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
  • 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 https://ns2.faseb.org/marc

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
b69cabeb864307d3cd5153d0833990e96afd9dbf0f35851aad43931a2b2f21a4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 5346 bytes
Detection
ClamAV: Doc.Trojan.Marker-1
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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