Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 947aecd3aec98961…

MALICIOUS

RTF / .DOC

666.7 KB
MD5: 39f1d0229752b47fea356920fe89acac SHA-1: e3ab746165d52d284f9aea95200f79269683222f SHA-256: 947aecd3aec98961186f255e1aa992ca51763f9a8dcfbf508977d6dbbfa72c5a
100 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 containing embedded OLE object data, which is triggered for activation by \objupdate. The heuristic SE_ENABLE_LURE indicates that the document body contains text designed to trick the user into enabling editing and macros. This suggests the document's primary purpose is to act as a dropper for a malicious payload, likely executed via embedded OLE object activation.

Heuristics 4

  • \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
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • 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_off00007320.bin
2670c4939ec1e234ca62698a78866edb4490b484a1e2a5471884224a40dced2a
rtf-objdata-decoded RTF \objdata at offset 0x7320 4271 bytes