RTF malware analysis — malicious · cd25cea911bae68c

MALICIOUS

RTF

438.3 KB Created: 2020-03-22 17:37:00

MD5: 76387fb419cebcfb4b2b42e6dc544e8b SHA-1: b1229b3f6ee85d550e6c0ed8de69571b1cc2cd32 SHA-256: cd25cea911bae68cf7672539cf6d2748753719bd7494bc9330171d83e4330d03

80 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains multiple OLE objects, with one specifically triggering an \objupdate command. This indicates an attempt to exploit embedded OLE functionality, likely for malicious purposes such as executing embedded code or downloading a secondary payload. The presence of large objdata sections suggests the embedding of significant content, potentially the payload itself. No document body text was available for further context.

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 3 \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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000094b3.bin` `27a3e86635d16cf573a3b75af69d5dcf6794e77708d268bc7f26d435e3e47d5d`	rtf-objdata-decoded	RTF \objdata at offset 0x94B3	107 bytes
`objdata_01_off0000a517.bin` `294f4dbac0a5821a6e0a7747227f87e9870e67ae445e78d0eb8a44755f94c95d`	rtf-objdata-decoded	RTF \objdata at offset 0xA517	32 bytes
`objdata_02_off0000a619.bin` `9c3a4d543f24d9129f00c2a28da875269d8d7d106f3dc3e81c42ab609a8ab11f`	rtf-objdata-decoded	RTF \objdata at offset 0xA619	114294 bytes

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