Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 7db3f47b80e70d97…

MALICIOUS

RTF / .DOC

71.1 KB First seen: 2023-03-01
MD5: 7697dcd2a7a4c4db5132a0040d01c481 SHA-1: 45ea88af0e62d2991ba72801b11fc6eba96335cb SHA-256: 7db3f47b80e70d978e5755153e7b2388bc070edd4f875cd6fec2bcf40b4b0031
80 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 \objupdate directive, indicating an attempt to embed and activate external content. The document body explicitly instructs the user to 'Enable editing' and discusses financial audits, a common lure to trick users into bypassing security measures. This suggests the file is designed to exploit user trust to execute embedded malicious code.

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_off00002d45.bin
6b1688d5d9cdd5045dfc4c44480297127ba8f776a5152681e84bdbdbff1155da
rtf-objdata-decoded RTF \objdata at offset 0x2D45 4155 bytes