RTF / .DOC malware analysis — malicious · 76a7ca51649d892c

MALICIOUS

RTF / .DOC

218.1 KB

MD5: 58e121949b3d69e640651738af3c9ec7 SHA-1: f4c86869a285a0e8774bec4a81c5cc2fb7660152 SHA-256: 76a7ca51649d892c2dfd4873582edfabd1ebbb2a84cd7c7777054db1705f628f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment T1137.003 Dynamic Registration

The RTF document contains multiple embedded OLE objects, with specific heuristics indicating the use of ".objupdate" to force OLE activation and a Composite Moniker, suggesting an attempt to execute embedded content. The document body explicitly instructs the user to 'Enable Editing', a common lure to bypass macro security. No scripts were extracted, but the OLE object activation points to a likely execution of a second-stage payload.

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.
\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
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
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_off00000ba2.bin` `51629c895d874460c32aedab1e7e666b8303862e1aa88d384b1cc959806288c1`	rtf-objdata-decoded	RTF \objdata at offset 0xBA2	15540 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).
`objdata_01_off00008a80.bin` `893d8db8585190a273d0c7c3dcff2eb58184b866a3687a9319ca72a8284876cb`	rtf-objdata-decoded	RTF \objdata at offset 0x8A80	2632 bytes
`objdata_02_off0000a023.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0xA023	12297 bytes

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