RTF / .OLE malware analysis — malicious · 2e445306c28e328a

MALICIOUS

RTF / .OLE

318.2 KB

MD5: 55af3aa1201c8e999f5c84f8a45cd027 SHA-1: 388198f39b8c8f5385db949bb54de21105b3a309 SHA-256: 2e445306c28e328a6625a6f1b71f49afadcb18fcf232fcf0ed1a38f6a98e22c8

182 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059 Command and Scripting Interpreter T1566 Phishing T1566.001 Phishing: Spearphishing Attachment

The file is an RTF document containing an embedded OLE object, which is a strong indicator of exploit delivery. Specifically, the 'RTF_EQUATION_EDITOR' and 'CLAMAV_DETECTION' heuristics, along with the ClamAV signature 'Rtf.Exploit.CVE_2017_11882-6584355-1', confirm the exploitation of the CVE-2017-11882 vulnerability in the Equation Editor. The '\objupdate' directive further suggests that the OLE object is designed to be activated automatically upon opening the document. This exploit typically leads to the execution of arbitrary code, commonly used to download and run a second-stage payload.

Heuristics 5

Equation Editor CLSID critical RTF_EQUATION_EDITOR

Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
ClamAV: Rtf.Exploit.CVE_2017_11882-6584355-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Rtf.Exploit.CVE_2017_11882-6584355-1
\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 info 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_off00000f09.bin` `1eede76982da411c3e8b85e75c410143070d5074b09c122d34368a3c28688320`	rtf-objdata-decoded	RTF \objdata at offset 0xF09	160838 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.98, consistent with packed or encrypted content.

Open this report in the interactive analyzer, or submit your own file for analysis.