RTF malware analysis — malicious · d79dcb90dfc01723

MALICIOUS

RTF

382.0 KB Created: 2022-06-21 08:02:00 Authoring application: WPS Office First seen: 2022-07-08

MD5: 001b53acfab523dc060d38d73d63feef SHA-1: a501fec38f4aca1a57393b6e39a52807a7f071a4 SHA-256: d79dcb90dfc01723f8df5628f502352c6f922187d3ef5942a6e8465552f40edf

80 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File T1027 Obfuscated Files or Information

The RTF file contains embedded OLE objects, with one specifically triggered by \objupdate, indicating an attempt to execute embedded content. The document body discusses legal amendments, a common lure for phishing, suggesting the embedded content is likely malicious. No specific family could be identified due to the lack of script content.

Heuristics 3

\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

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00025324.bin` `dc1232b57c5c684b6838329879533b945a263fd5a3bb1825d50f58d153a77e68`	rtf-objdata-decoded	RTF \objdata at offset 0x25324	112380 bytes
`objdata_01_off0005c142.bin` `624cd8895a4ecc5a0a871cb6215c2b19f4fae3b522107541fa9df8c8983ecb35`	rtf-objdata-decoded	RTF \objdata at offset 0x5C142	6847 bytes
`objdata_02_off0005c15c.bin` `05ba095ac605422898d063511280e25730e5e1dd91478e3cd20e32a7ee2beec8`	rtf-objdata-decoded	RTF \objdata at offset 0x5C15C	6843 bytes

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