RTF malware analysis — malicious · e58390190b581701

MALICIOUS

RTF

386.5 KB

MD5: 3591f45ebe2fd390e5fab9a3026c56b5 SHA-1: ddfb1d146ebcb2182daddb9469d4972e0c0fa43a SHA-256: e58390190b581701a1a02c4dc3169a37c386b34ecf8ede57e74c38325f00d90a

140 Risk Score

Malware Insights

MITRE ATT&CK

T1559.002 Component Object Model Hijacking T1204.002 Malicious File

The RTF document contains multiple OLE objects, with specific heuristics indicating the use of \objdata and \objupdate, suggesting an attempt to exploit OLE activation. The presence of composite monikers further supports this. The extracted artifacts, objdata_00_off000007d0.bin, objdata_01_off00032c1f.bin, and objdata_02_off000341c2.bin, are likely components of this exploit chain, designed to deliver a malicious payload.

Heuristics 5

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
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_off000007d0.bin` `567d8bad5b8c49a4a2a94727ce64e596d74d6dd342bfc0d5750203dd2fc5d5f7`	rtf-objdata-decoded	RTF \objdata at offset 0x7D0	98917 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).
`objdata_01_off00032c1f.bin` `c1062dbe2c516490ba03c091a3be0d514bef7428a936eb00367c1b3069f9cedc`	rtf-objdata-decoded	RTF \objdata at offset 0x32C1F	2632 bytes
`objdata_02_off000341c2.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x341C2	12297 bytes

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