Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 fa32f6938ecdcecd…

MALICIOUS

RTF / .DOC

143.0 KB
MD5: bc00607362b7ce2ea1dd6b5fde3acdc0 SHA-1: 9f0275e2348bb0fe5a455c440cd5f02632b28582 SHA-256: fa32f6938ecdcecd6a81c8fefddeb1e25fa8335db2911db0e5d16bc949f12970
60 Risk Score

Malware Insights

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

The file is an RTF document containing embedded OLE object data, as indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that the embedded OLE object is configured to activate automatically upon opening, which is a common technique for delivering malicious payloads. Without a document body or script content, the exact nature of the payload cannot be determined, but the OLE activation strongly implies an attempt to execute arbitrary code.

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_off0000167f.bin
a3e44b6d4de9d361c0f078f1def4f51250ded347f15584b916812e9e084392c2
rtf-objdata-decoded RTF \objdata at offset 0x167F 4176 bytes