RTF / .DOC malware analysis — malicious · ebb95e12f46576b3

MALICIOUS

RTF / .DOC

336.4 KB First seen: 2022-09-19

MD5: 82cc61afe73a1cc59bcbfdae044ee237 SHA-1: 19835ba5641f63c6cd987119ed2a89c95c389416 SHA-256: ebb95e12f46576b3a0f2d7443251cf2bf90bb78874d5c2b5282eda6fe2ff10f6

220 Risk Score

Malware Insights

MITRE ATT&CK

T1204 User Execution T1204.002 User Execution: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter

The RTF document contains OLE objects and triggers heuristics related to CVE-2017-8570, indicating it exploits a vulnerability to drop a script. The document body explicitly instructs the user to 'click Enable Editing', a common lure to bypass security measures and allow embedded malicious content to execute. The extracted artifacts are likely components of the exploit or the dropped payload.

Heuristics 7

Composite Moniker — CVE-2017-8570 (drops SCT script) critical CVE related CVE_2017_8570

RTF \objdata decodes to OLE data containing the Composite Moniker — CVE-2017-8570 (drops SCT script) CLSID — the vulnerable control/moniker is embedded directly in the document's object stream, the delivery shape of this exploit. RTF objects auto-render when Word opens the file.
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.
\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
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off0000095f.bin` `20e216f9ce1dbc528c8a2a8fc643bd3525c68d38f4e80ea33944115f3d94c907`	rtf-objdata-decoded	RTF \objdata at offset 0x95F	74033 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).
`objdata_01_off00026381.bin` `43dc420203828d24ec36adf809a9ada54bc1f182c6dd7bd39e852b7059bf1a1d`	rtf-objdata-decoded	RTF \objdata at offset 0x26381	2632 bytes
`objdata_02_off00027924.bin` `142dc43284d9abe994719f8fb67bc4c04bfc3f07528a1a66b0bad7e552ee8e78`	rtf-objdata-decoded	RTF \objdata at offset 0x27924	12297 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.