RTF malware analysis — malicious · e5113afd84de186c

MALICIOUS

RTF

796.4 KB Authoring application: Msftedit 5.41.15.1515

MD5: 5a1bcd0246a398734afc864e05448266 SHA-1: d7019919d0e215e7f05d060e8a0adece70b7dc1a SHA-256: e5113afd84de186c755233d54d930d723551e8d36ba07080625e9502637f6fde

182 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

The RTF document contains an embedded OLE object, identified as a package object, which in turn contains a PE executable. The embedded PE file is likely intended to be executed upon opening the OLE object. The DOC BODY excerpt contains a path that strongly suggests the embedded executable is intended to be dropped and run from 'C:\Documents and Settings\HOME\Meus documents\Downloads\pro hacker\gyroball.exe'. The presence of 'shell32.dll' further indicates potential execution of Windows shell functions.

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.
PE header (with DOS stub) in hex data critical RTF_MZ_HEX

Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000000d1.bin` `2867b360c95a0fe1ae06cd69d0ff9a50f8e0fd9ad76e5e54d4bdce04079e5c44`	rtf-objdata-decoded	RTF \objdata at offset 0xD1	397432 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.61, consistent with packed or encrypted content.
`embedded_rtf_000001fe.exe` `dc3ac199a557feedfd28cdaf51b6a01889a2b1557a28bd1c177c841c4e2bd148`	embedded-pe	RTF hex-encoded MZ at offset 0x1FE	397292 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.61, consistent with packed or encrypted content.

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