Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 c576e6666e9beeaf…

MALICIOUS

RTF / .DOC

7.6 KB First seen: 2023-01-24
MD5: 156ab136f4d514dd9001968ebe8e6acd SHA-1: f244946e63aa02cd381af3d74b909b525480312e SHA-256: c576e6666e9beeafdbad198a578fe68caa827b07881c9b8e115f33e118720a36
60 Risk Score

Malware Insights

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

The sample is an RTF document containing embedded OLE object data. Heuristics indicate that \objdata and \objupdate are used, suggesting the document is designed to automatically activate embedded objects upon opening. This is a common technique for delivering malicious payloads, likely through a secondary download or execution stage.

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_off000010f5.bin
0255882b65022d236d3ebb8f16cd0d82ab6a41c33f15d3ac9cbe20600933d90c
rtf-objdata-decoded RTF \objdata at offset 0x10F5 1693 bytes