Win.Trojan.Prosti-5 RTF malware analysis — malicious · f7c8ebfbb251423a

MALICIOUS

RTF

145.9 KB Authoring application: Msftedit 5.41.15.1515

MD5: 4f6b2baea8dc9cec1bc42861001970a2 SHA-1: b246748ced39dc623b8fe7d8dd4aac7f998dc926 SHA-256: f7c8ebfbb251423ab7bc030952168d53e68eb3fb1344376bd900b6cceec41dcf

142 Risk Score

Malware Insights

Win.Trojan.Prosti-5 · confidence 95%

MITRE ATT&CK

T1559 Component Object Model Hijacking T1559.001 Component Object Model Hijacking: Component Object Model Hijacking

The RTF file contains embedded OLE objects, specifically a package object, which is a common technique for delivering malicious payloads. ClamAV identified the file as Win.Trojan.Prosti-5. The presence of OLE objects and the ClamAV signature strongly suggest a malicious intent to execute embedded code.

Heuristics 5

ClamAV: Win.Trojan.Prosti-5 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Prosti-5
Package object class high RTF_OBJCLASS_PACKAGE

OLE Package object — can wrap arbitrary files
OLE object data medium RTF_OBJDATA

RTF contains 1 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
Suspicious extracted artifact info 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_off000000d1.bin` `41daf917c395975bc30987d2199599167c4a3f18359330cb36efd217d6014ee9`	rtf-objdata-decoded	RTF \objdata at offset 0xD1	72441 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.82, consistent with packed or encrypted content.

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