RTF malware analysis — malicious · adef334921cfd1af

MALICIOUS

RTF

3.2 KB First seen: 2020-06-01

MD5: 896a942164666ae8ad6c90bfe7a25b06 SHA-1: 99380a4b7bcdcd67d6f8c49aea97c70430211f6e SHA-256: adef334921cfd1af947c4b3d0e662653906ada46b40c8f15095cfddaa99c9af6

80 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF file contains OLE object data and an \objupdate directive, indicating an attempt to exploit OLE object activation for code execution. A shellcode candidate region was also identified within an embedded OLE object. The document body consists of repetitive numeric strings, offering no contextual clues, thus the attack pattern is inferred from the OLE exploitation.

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
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off0000017a.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x17A	1426 bytes
SHA-256: `aceadec5f5a730ecc5e64e6c910a692d0447702e18110d90b926b7891646aebf`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL

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