RTF / .DOC malware analysis — malicious · 3d3b5e62409ada36

MALICIOUS

RTF / .DOC

383.5 KB

MD5: 2b47ad2f8845599531e6a49f53febf7c SHA-1: c21978e5dbd431af9b7a6957dc77aba18231d1cb SHA-256: 3d3b5e62409ada36c603e4688ff7ffe581a55d4227645f679401784ebc2cfdd7

140 Risk Score

Malware Insights

MITRE ATT&CK

T1559.002 Component Object Model T1204.002 Malicious File

The RTF document contains multiple OLE objects, with specific heuristics indicating the use of \objdata and \objupdate to force OLE activation. This suggests the document is designed to exploit a vulnerability related to OLE object handling, likely leading to the execution of embedded code from the extracted artifacts.

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_off000007de.bin` `6419c4747ef61f1eaadd95f90874d3a41bfc6312daa03d1476693a52e42122ef`	rtf-objdata-decoded	RTF \objdata at offset 0x7DE	97392 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).
`objdata_01_off00031fc9.bin` `ad7bf1923f855fca5949d0c557a2a819b106cd84b204870bcc59064eb0c6e331`	rtf-objdata-decoded	RTF \objdata at offset 0x31FC9	2632 bytes
`objdata_02_off0003356c.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x3356C	12297 bytes

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