Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 1de4bad50f143311…

MALICIOUS

RTF / .DOC

34.1 KB
MD5: c8cd8336f0508813d452b5062a78c655 SHA-1: 817d701a836ad14b1acdc2fd7ba9c6b26c9ffd0d SHA-256: 1de4bad50f143311dbb23b9a0128887aeb0041f17d44cd831c10048957c1f47a
120 Risk Score

Malware Insights

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

The RTF document contains embedded OLE objects, with the \objupdate directive forcing activation. This indicates an attempt to execute embedded content, likely a secondary payload. The presence of RTF_OBJDATA and RTF_OLE10NATIVE_STREAM heuristics further supports this. No document body or script content was available for analysis, limiting the ability to determine the exact nature of the payload or its ultimate goal.

Heuristics 4

  • Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM
    RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
  • \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 2 \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_off00000bb2.bin
c0137737fa0e83039b3f81276124a318db9a3e654d3d378f3eccdd4deb5cbf30
rtf-objdata-decoded RTF \objdata at offset 0xBB2 4168 bytes