RTF malware analysis — malicious · b5d1a0130060e41c

MALICIOUS

RTF

7.3 KB First seen: 2020-12-28

MD5: 4584d2d6638543fdda68ff2c2140c832 SHA-1: 953f619907b5d0d50673ef5fbad40a99709d1948 SHA-256: b5d1a0130060e41c09c5ae703b40722c849f82bb98e016a813ee9eeb013e9691

140 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains an embedded OLE object, specifically identified as an Equation Editor exploit. This exploit is designed to execute arbitrary code upon opening the document, likely leading to the download and execution of a secondary payload. The presence of shellcode command strings further supports this attack vector.

Heuristics 4

Equation Editor CLSID critical CVE likely RTF_EQUATION_EDITOR

Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
Suspicious extracted artifact high 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.
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_off00000095.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x95	3627 bytes
SHA-256: `c00349c0131f3c7ba2a40c3c5cf88ae94cf1645c6adaeac4f7fc4c5ec28d9836`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis recovered command string(s): powershell.exe -noexit -windowstyle maximized

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