Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 274915c3c8347c36…

MALICIOUS

RTF / .DOC

4.6 KB First seen: 2023-10-09
MD5: 2498c1bc46675d8407ec5a66135eac31 SHA-1: 545931ea4d74026d5d1b94d943034761b4e11b93 SHA-256: 274915c3c8347c36c6f707673b9a4369708f45c828ce83d3c955992ceeefd047
80 Risk Score

Malware Insights

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

The RTF document contains embedded OLE object data and a ".objupdate" directive, indicating an attempt to exploit a vulnerability when the object is activated. This is a common technique for delivering malicious payloads. No specific family could be identified from the available heuristics.

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_off0000008a.bin
241bde52c186512d737e08f600b223beaf778936d7599ac11fec0426d9be34ff
rtf-objdata-decoded RTF \objdata at offset 0x8A 2230 bytes