Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 75b34582da3effe9…

MALICIOUS

RTF / .DOC

921.0 KB
MD5: e8074b57eed527b7b5f160f323710a76 SHA-1: 555da86dc5e177b513d664dc2741feec19b55f97 SHA-256: 75b34582da3effe95b2f94a7508ea7ffbae5a201f6cf3f8a65bc1929735499d3
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter T1059.005 Command and Scripting Interpreter: Visual Basic

The sample is an RTF document that contains OLE object data and an \objupdate directive, indicating it's designed to activate embedded objects. The document body presents a lure related to financial auditing, instructing the user to 'click Enable editing', which is a common tactic to bypass macro security. The presence of the SE_ENABLE_LURE heuristic further supports that the document is intended to trick the user into enabling malicious content. No scripts were extracted, but the structure suggests it's a dropper.

Heuristics 3

  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000361d6.bin
bbace11f71493946c20e0852e1787f4bac767420051081f674563dddd6d4ce8a
rtf-objdata-decoded RTF \objdata at offset 0x361D6 4239 bytes