Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 50db4947b7b376e1…

MALICIOUS

RTF / .DOC

589.8 KB
MD5: cfd4d9dd527b39666c60b568cba3c5a1 SHA-1: f96ce3dfd7435fd8db601ee73d4c0d20fe0a52a4 SHA-256: 50db4947b7b376e1dcf502a704bd87dbbc7a04959720f5c2b9390d171cef240c
100 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment

The RTF document contains OLE object data and an instruction to enable editing, which are common tactics for bypassing macro security settings. The document body discusses financial audits and internal controls, likely serving as a lure to trick the user into enabling malicious content. The presence of ".objdata" and ".objupdate" heuristics strongly suggests the embedded OLE object is intended to be activated, likely to download and execute a secondary 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_off00042713.bin
924279adf7d4498bd111ae3dffbc7708aae8cfd330a33cddf5d9825e81d18bba
rtf-objdata-decoded RTF \objdata at offset 0x42713 1709 bytes