Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 79a80a8b5a40a2fa…

MALICIOUS

RTF / .DOC

17.6 KB
MD5: eca5268a3b80389c78c9ae97c3b00751 SHA-1: c34993a9e5a24ef6cb60b164f1f6feea0de3ebbc SHA-256: 79a80a8b5a40a2fa83d968b67bf622a6cdeb4d247529cc034f9a992224354b71
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.003 Windows Command Shell

The file is an RTF document containing embedded OLE objects, as indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that these objects are designed to be activated automatically, which is a common technique for exploiting vulnerabilities in document viewers. The presence of OLE object data strongly implies an attempt to leverage a vulnerability, likely for initial execution of a malicious payload.

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 2 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000017f8.bin
77964434e185783ac81a530561fc18456fbda8b636df17b47df022ffbc91d431
rtf-objdata-decoded RTF \objdata at offset 0x17F8 1564 bytes