RTF malware analysis — malicious · 323c118dc57345fa

MALICIOUS

RTF

9.8 KB

MD5: ed183e13abafec571672f1327d3962d3 SHA-1: eaf2fe25c9ae5b72526b45ac4b910db7db64bade SHA-256: 323c118dc57345fa72f6602e94fe9f2eb7dba9cd5b09a7064b5a425a9cfbf319

80 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.001 Spearphishing Attachment

The RTF document contains an embedded OLE object that is configured to automatically update and activate. This is a common technique for exploiting vulnerabilities in OLE object handling to achieve code execution. The presence of RTF_OBJDATA, RTF_OBJEMB, and RTF_OBJUPDATE heuristics strongly suggests an exploit attempt. The document body is heavily obfuscated and does not provide clear textual lures, making it difficult to determine the exact social engineering pretext. However, the technical indicators point towards a malicious payload delivery mechanism.

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

RTF contains \objemb — embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00001035.bin` `9e09b5896aeb86ad0cd5f41164aadbf53f0c9ff586c2b8d5aa3796c11c84751c`	rtf-objdata-decoded	RTF \objdata at offset 0x1035	2157 bytes

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