RTF malware analysis — malicious · f16d15b97a68b171

MALICIOUS

RTF

852.5 KB Created: 2020-04-16 04:46:00

MD5: db37f78291bf846f23cf60299300b835 SHA-1: 4395d2e428a8585c93135e25adcd16cb30ff655a SHA-256: f16d15b97a68b1718ee3fa87baece8ab8ea4423bed1a87a4087894466370aa52

80 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains multiple embedded OLE objects, with heuristics indicating that \objupdate forces OLE activation. This suggests the file is designed to exploit vulnerabilities associated with OLE object handling within RTF documents. While no scripts were extracted, the presence of embedded OLE objects and the RTF_OBJUPDATE heuristic strongly indicate a malicious intent to execute embedded code or exploit a vulnerability upon opening.

Heuristics 4

\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 12 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://schemas.microsoft.com/office/word/2003/wordml

Extracted artifacts 9

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00002cab.bin` `c17a7cdff080561e682732f7ccc0c9cdd0c3ddd6f90703ffdabf70182522a715`	rtf-objdata-decoded	RTF \objdata at offset 0x2CAB	21563 bytes
`objdata_01_off00013a52.bin` `2f623328fe2803646b50c31b9707634dd459952d8aa474367212194c862cf443`	rtf-objdata-decoded	RTF \objdata at offset 0x13A52	21563 bytes
`objdata_02_off00024902.bin` `e7442eeac83367d9d6ac0545501bbfb80b94cf15d8342a4e9377a1c31c0b16d6`	rtf-objdata-decoded	RTF \objdata at offset 0x24902	21563 bytes
`objdata_04_off00046662.bin` `471fedcf1fe712e3ac3b3afdd3f8dd0445c81375f493f3c0d3171591dd0d3899`	rtf-objdata-decoded	RTF \objdata at offset 0x46662	21563 bytes
`objdata_05_off00057512.bin` `934a3f26668b4edc89e0efbfa29b662f6214cdf6a968e51ed64da69d2b31a552`	rtf-objdata-decoded	RTF \objdata at offset 0x57512	21563 bytes
`objdata_06_off000683c2.bin` `736bc8b54777a9834b32cabc4559ae72a07779681af8511212d97ba9986e8e77`	rtf-objdata-decoded	RTF \objdata at offset 0x683C2	21563 bytes
`objdata_07_off00079272.bin` `8f131fb212ba06f95444345ae328de61609b461095c4554a0384b777c3ab8abf`	rtf-objdata-decoded	RTF \objdata at offset 0x79272	21563 bytes
`objdata_09_off0009afd2.bin` `d398efd119e4dc4a88e915c4aaf7c952add470bdd165d9948c774de936e87120`	rtf-objdata-decoded	RTF \objdata at offset 0x9AFD2	21563 bytes
`objdata_10_off000abe82.bin` `b6db4d62623046015a86d12773452cd48e2291f7b58034f637e4a3c70810802e`	rtf-objdata-decoded	RTF \objdata at offset 0xABE82	21563 bytes

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