Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 f9a6e8aed26a829f…

MALICIOUS

RTF / .DOC

8.9 KB First seen: 2022-08-11
MD5: 6444777ae59bee41428a9c3a53741c80 SHA-1: b89f8a9d02dbb2139430a1a30314e4f2cff29f71 SHA-256: f9a6e8aed26a829f9af2ecf722dc09ed76a3144d6fe4bc456065e9c20af368d4
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1566.002 Phishing: Spearphishing via Service

The sample is an RTF document containing OLE object data and an instruction to enable editing, which is a common social engineering tactic to bypass security measures. The heuristic SE_ENABLE_LURE specifically flags this behavior as a lure to enable macros or editing, indicating a likely malware dropper. No specific IOCs were extracted beyond the RTF structure itself.

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 2 \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_off00000bf4.bin
ca0ff2630589de122ec87a41254295b667e83016af1c7366b8e34ef54fc82209
rtf-objdata-decoded RTF \objdata at offset 0xBF4 1598 bytes