Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 54cdf68e4c09c042…

MALICIOUS

RTF / .DOC

6.9 KB First seen: 2023-01-04
MD5: 518fe9c8270edccf85d932a0f3595a39 SHA-1: b6b0c7ab6f6ca56693d166fb6b3d0ca2abe620aa SHA-256: 54cdf68e4c09c042341a246db9a64ea83608ad0a3fa3d91e6d85be017deb2466
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204 User Execution T1204.002 Malicious File T1566 Phishing T1566.001 Spearphishing Attachment

The RTF document contains OLE object data and uses an \objupdate directive, indicating it's designed to activate embedded objects. The document body includes a lure instructing the user to 'enable editing' to fix viewing problems, a common social engineering tactic to bypass macro security. This suggests the file is a dropper intended to execute malicious content upon user interaction.

Heuristics 3

  • \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
  • 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_off000009ae.bin
93d2b50a23e1c281f2d728b8fba7fa0e5a93c30bbacb1fcda78d2040106f0009
rtf-objdata-decoded RTF \objdata at offset 0x9AE 2223 bytes