Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 ecab42bb991c926c…

MALICIOUS

RTF / .DOC

128.1 KB
MD5: cfafa80d04b156dce44943b099a901f2 SHA-1: 7765a85061dd031a3cee493eb9db64646bc79c09 SHA-256: ecab42bb991c926cd7dcab95bd75d5cbdd2ecf73b53cef9a61de59c8faf64d89
100 Risk Score

Malware Insights

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

The RTF document contains OLE object data and triggers automatic updates and activation of these objects. This strongly suggests an attempt to exploit OLE vulnerabilities to execute embedded code. While no specific script or payload was directly extracted, the heuristic firings indicate a malicious OLE object is present, likely designed to download and execute a second-stage payload.

Heuristics 3

  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • \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_off00001f07.bin
9a050e8aa90196bbfc8559488ce7cf8452e087908d494c6f3f8300bae96401a4
rtf-objdata-decoded RTF \objdata at offset 0x1F07 3654 bytes