Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 80373cf0eae1abc4…

MALICIOUS

RTF / .DOC

229.2 KB
MD5: 8f6b1b881976953d4eafe5616ad51e61 SHA-1: be2a43452b983376fac414ba7d768f2767951e61 SHA-256: 80373cf0eae1abc455af08cf6509d21026a0255aff53763e4b18241ff06fd549
180 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter T1059.005 Command and Scripting Interpreter: Visual Basic

The RTF document contains multiple OLE objects, with one being automatically linked and another triggering an update. The 'SE_ENABLE_LURE' heuristic indicates the document likely instructs the user to enable macros or editing to bypass security. This suggests the document is designed to exploit OLE object activation to deliver a secondary payload. No scripts were extracted, and no specific family could be identified.

Heuristics 6

  • Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED
    RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • \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 3 \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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000965.bin
d9fe68b47508a5f0952d1d530e9a2947f2c89d88ac33f252a29ffe419c48c4a2		 rtf-objdata-decoded RTF \objdata at offset 0x965 20583 bytes
objdata_01_off0000b142.bin
1af484323aa51f0bc067b498458ed2106db428c7b743185ac9a6e18e7b648e31		 rtf-objdata-decoded RTF \objdata at offset 0xB142 2632 bytes
objdata_02_off0000c6e5.bin
44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037		 rtf-objdata-decoded RTF \objdata at offset 0xC6E5 12297 bytes

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