Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 e164bb4a190f79c5…

MALICIOUS

RTF / .DOC

111.2 KB
MD5: b2daf885c5199ed93bfdafe0f3a33ae6 SHA-1: 3d2dba1d76e2bfcae449113de1597d0c725b3421 SHA-256: e164bb4a190f79c58b836441a8f59bf3ead186f359fbac64b0e86e7e058c0efe
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File T1566.001 Spearphishing Attachment

The file is an RTF document containing embedded OLE objects, with heuristics indicating that \objupdate forces OLE activation. This suggests the document is designed to exploit OLE vulnerabilities to execute embedded code. While no specific script content is available, the presence of OLE objects and the activation trigger strongly imply a malicious intent, likely to download and execute a secondary payload or perform credential harvesting. The high risk score further supports a malicious classification.

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
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000201f.bin
ecf60050ee2ce028f7f32db1851be5f054c7cd8d791a7eeb5ed87377129d62c2
rtf-objdata-decoded RTF \objdata at offset 0x201F 1850 bytes