Rtf.Exploit.CVE_2017_11882-6584355-1 RTF malware analysis — malicious · e9e014c951dc57d5

MALICIOUS

RTF

8.2 KB First seen: 2018-05-18

MD5: 690aba0b599398bb868586860a9fb62d SHA-1: 54a5d8487b411d8d37a945acbe212987dba38022 SHA-256: e9e014c951dc57d52c03d2944ec9ed558c394bdd47fa8be2369b11c1e030d855

220 Risk Score

Malware Insights

Rtf.Exploit.CVE_2017_11882-6584355-1 · confidence 95%

MITRE ATT&CK

T1203 Exploitation for Client Execution

The sample is an RTF document that contains an embedded OLE object. Heuristics indicate the presence of an Equation Editor exploit, specifically CVE-2017-11882. This exploit allows for the execution of arbitrary code on the victim's machine, likely to download and run a secondary 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_off0000003c.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3C	4154 bytes
SHA-256: `6fa03f758e33a6df63d3faa540729f49b20533df15c69026b3ec77de5b74fb63`

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