RTF malware analysis — malicious · 086e17d2fd564185

MALICIOUS

RTF

8.5 KB First seen: 2018-06-21

MD5: 4948153cbf2b6a11a7c4be12fb2cad4e SHA-1: 5a2bfeba03412d3503a847e2d836d85448dd5188 SHA-256: 086e17d2fd56418585eb56db701b747d5b75462bf283b924d5c868046ccfa45f

220 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is an RTF document that contains an embedded OLE object, specifically triggering heuristics related to Equation Editor exploits and OLE activation. The ClamAV signature explicitly identifies it as Rtf.Exploit.CVE_2017_11882-6584355-1, indicating exploitation of the Equation Editor vulnerability. This exploit is commonly used to download and execute a second-stage payload.

Heuristics 5

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
Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM

RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000001ab.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x1AB	4144 bytes
SHA-256: `090ec3581c5802bb17c1022326b164b07bdbc6bb39122758269ebdf4dbc825ca`

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