RTF malware analysis — malicious · 991707d5baa8fe1d

MALICIOUS

RTF

953.8 KB Created: 2020-04-27 04:15:00

MD5: 1f6591427ee0a5dc21438c6461b31338 SHA-1: 7225b9d756c8233fa87a330755be056def6f1f63 SHA-256: 991707d5baa8fe1dc96dbc36670f01ce14f9b1f3a8214a82d4fb316eb006f330

80 Risk Score

Malware Insights

MITRE ATT&CK

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

The RTF document contains multiple embedded OLE objects, with one specifically triggering an objupdate event. This suggests an attempt to leverage OLE object activation for malicious purposes, likely to execute embedded code. No specific malware family could be identified, and the document body was truncated, limiting further analysis of the exact payload or lure.

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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00002cae.bin` `92cf70b1bac83f302696b6090c605a8714ba48600f91e4025651bf847e8760c2`	rtf-objdata-decoded	RTF \objdata at offset 0x2CAE	21563 bytes
`objdata_01_off00015c15.bin` `21f9014cd4154ae13e798d5f6d868be4e24bb8257af57fe210372bbec71c2861`	rtf-objdata-decoded	RTF \objdata at offset 0x15C15	21563 bytes
`objdata_04_off0004ed5f.bin` `f1ae9de5717ca1bfa6249e3a0eccb41f62389701af96f71bc00edf9ba1d5b0a8`	rtf-objdata-decoded	RTF \objdata at offset 0x4ED5F	21563 bytes
`objdata_08_off0009af17.bin` `34d895a6cca8a500c510cbeac9b7261253536afa6c086db872cd74b60b719d8c`	rtf-objdata-decoded	RTF \objdata at offset 0x9AF17	21563 bytes

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