Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 43791e3a669b0ef0…

MALICIOUS

RTF / .DOC

993.9 KB
MD5: 97a15f7613b5b934d441522e77f16744 SHA-1: fefb6df20de9630e621ffa42bb55a5021d46da8f SHA-256: 43791e3a669b0ef08ef0fbad3ed4c0405737c72882c09f100be6cff1aab7eebb
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 it is designed to activate embedded objects. The document body provides a lure related to financial auditing to encourage the user to 'Enable editing', a common tactic for macro-based malware droppers. The presence of embedded OLE object data suggests the potential for a secondary payload execution.

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_off000109e0.bin
b464ddf7fb3c3db303910875aff32e6b86fa69d12226bb504cc2e6f16415d6e2
rtf-objdata-decoded RTF \objdata at offset 0x109E0 4766 bytes