RTF malware analysis — malicious · c878579b54a9c3e6

MALICIOUS

RTF

106.3 KB First seen: 2019-01-12

MD5: 93dacca06502bc9166a9433d03590aad SHA-1: 39c01e4bd31cfd004447164707c671894b6c9b5f SHA-256: c878579b54a9c3e6f5e3566d47685c52d77e43321d55d0b4161562c66166f6b4

100 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF file contains OLE object data and uses \objupdate to force OLE activation, indicating an attempt to execute embedded content. The decoded OLE object's Ole10Native stream further supports this. While no specific family is identified, the technique strongly suggests exploitation for client execution.

Heuristics 3

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.
\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	3641 bytes
SHA-256: `6a1a1ce2ce0bede08a8978b794fca076b126d4eb0429c5a44ae1779f92b890bd`

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