Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 2d26d52eb3fa5084…

MALICIOUS

RTF / .DOC

9.0 KB First seen: 2022-08-16
MD5: 08c25d37a4178c12a0cf6ef74aeeae42 SHA-1: f192f840121a183661bfa6bf8dd566f7c9598fb5 SHA-256: 2d26d52eb3fa5084fae6bfeb93e6e60d69efd78c2bd41eb0f100887aa35e4b66
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 RTF document contains OLE object data and an ".objupdate" directive, indicating it's designed to trigger embedded content activation. The heuristic 'SE_ENABLE_LURE' confirms the document instructs the user to enable macros or editing, a typical dropper technique. No specific IOCs were extracted, but the overall pattern suggests a downloader or 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 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_off00000b5d.bin
807fddd0ce4feea21a79223d397cc094f5f5dfc0e6a73666aca699528f210b7f
rtf-objdata-decoded RTF \objdata at offset 0xB5D 1714 bytes