RTF malware analysis — malicious · 815002a36fdd658f

MALICIOUS

RTF

16.8 KB First seen: 2020-07-24

MD5: a4554f966502acae8fdd6446bf1e2d68 SHA-1: 7c133049c3a5df4e5a8447d5872eaa7f1b9a8580 SHA-256: 815002a36fdd658f2013b7a7893d77ee836443240a7498f082a370d5bec7b436

80 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains an embedded OLE object, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this object is forced to activate, which is a common technique for exploiting vulnerabilities in OLE objects. The extracted artifact 'objdata_00_off000019de.bin' is flagged as a potential shellcode candidate, further supporting the exploitation attempt. The lack of readable document body text or scripts prevents a more specific analysis of the lure or payload.

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
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000019de.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x19DE	1479 bytes
SHA-256: `1c38a41da9c224196a3f0d23e8b3a887edbb34e30117b7f9454974ab2911f782`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL

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