Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 0913475ef3016888…

MALICIOUS

RTF / .DOC

16.0 KB First seen: 2022-10-03
MD5: b11a140ef3357989d2e252ba3604f730 SHA-1: 00bba5497c7de2e41b13480e110fcb66ee15b577 SHA-256: 0913475ef3016888ef421ed57a76e12bb2c1f8d8381a4883504f7ea2b4153628
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204 User Execution T1204.002 Malicious File T1566 Phishing T1566.001 Spearphishing Attachment

The RTF document contains OLE object data and uses an \objupdate directive to force OLE activation, indicating an attempt to execute embedded content. The document body explicitly instructs the user to 'Enable editing' and mentions it was created in an 'earlier version of Microsoft Office Word', which is a known lure to bypass macro security settings and execute malicious payloads.

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_off00001ce3.bin
23822d4491ca864fa0b3b0cee87e5ce59d2ba99c8736bae9dad79f3ad9768d63
rtf-objdata-decoded RTF \objdata at offset 0x1CE3 1670 bytes