Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 82882f441811e510…

MALICIOUS

RTF / .DOC

196.8 KB
MD5: 00001a52644212e414ab06e74b6b3316 SHA-1: 8e00fd81cb57534b78e584b204147d7cdf92eb4d SHA-256: 82882f441811e5102e6e93754413976cadb5a6faf6cf95fb9d2c443d08df4675
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The RTF document contains an OLE object with ".objupdate" directive, indicating an attempt to force activation and execute embedded content. This is a common technique for delivering malicious payloads. The presence of an embedded OLE object, identified as 'objdata_00_off00000709.bin', suggests it is the primary mechanism for exploitation. Without further script or body content, the exact payload and its ultimate goal remain undetermined, leading to an unknown family classification.

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_off00000709.bin
863ba1389727089803437fac673b515724c6243f9b00bec82fa7e4feed9597e3
rtf-objdata-decoded RTF \objdata at offset 0x709 1493 bytes