Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 1fa1456f54875b75…

MALICIOUS

RTF / .DOC

3.6 KB First seen: 2022-11-21
MD5: 8c4c4e2a86ac9aaae6070d1aca84d710 SHA-1: 603a008dfca22b58e194e0df360a92ff6f484f9e SHA-256: 1fa1456f54875b75a353ef691f452ced661b3d65a7f7649ee3cb2f8ca6b2741c
60 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object that is triggered by the \objupdate directive, indicating an attempt to exploit a vulnerability. The presence of OLE object data suggests the document is designed to deliver a malicious payload when opened. No scripts were extracted, and the document body contained only a numeric string, providing limited insight into the specific lure.

Heuristics 2

  • \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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000076.bin
77dd0eff2c099a414388d4723e51549c91ba1c70ab1fa3eb513a1777c27e4954
rtf-objdata-decoded RTF \objdata at offset 0x76 1758 bytes