Malicious RTF — malware analysis report

Static analysis result for SHA-256 f2fc5db5e7e4be92…

MALICIOUS

RTF

14.4 KB First seen: 2020-09-07
MD5: 7806466c545afcd6fe51253d583dcc68 SHA-1: 73a0c23ee1fa299f762045660cd6c0fcd050c0d4 SHA-256: f2fc5db5e7e4be927b283ccca35f808b241ea43255d6a9b8dfc742cf4e179dc5
60 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains OLE object data and uses an \objupdate directive, indicating an attempt to exploit OLE object activation. This suggests the file is designed to execute arbitrary code when opened, likely leading to a second-stage payload. No specific family could be identified.

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_off00001732.bin rtf-objdata-decoded RTF \objdata at offset 0x1732 1444 bytes
SHA-256: 32d5c3606711eb4545743a73d39397e0bbc15536b09e37424d6fca4c6499c6f5

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