Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 61d3e5183fd1a0ef…

MALICIOUS

RTF / .DOC

731.1 KB
MD5: e616a0fab41b046b3fd51b5697ab23dc SHA-1: b371c54ebf39448731647271131e8c65f8c44bfc SHA-256: 61d3e5183fd1a0ef9c6d5c3f923fdbb1558c1b3ebcdc7f3e960a7dae1709e592
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The RTF document contains embedded OLE objects and uses an \objupdate directive, indicating an attempt to automatically activate them upon opening. The document body includes a lure instructing the user to 'Enable editing', a common tactic for malware droppers to bypass security measures. The presence of OLE objects suggests the potential for executing embedded code, likely a second-stage payload.

Heuristics 4

  • \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
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00020d42.bin
a111d47e545865b8356aa19807cb80b1c8ab50474625e8252f1a51d3cc248d2b
rtf-objdata-decoded RTF \objdata at offset 0x20D42 3750 bytes