RTF malware analysis — malicious · 682fef970864077c

MALICIOUS

RTF

519.1 KB First seen: 2018-11-13

MD5: 4bc7be450a42592b82afe15e807ccb42 SHA-1: 43d38135ff062102a5dc0f5f2afb5e6b7d5a49c5 SHA-256: 682fef970864077c5176dcb16268d6b596b90cf15e25443bdfa01f0ac02f14fd

100 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF file contains an OLE object with an \objupdate directive, indicating an attempt to exploit a vulnerability for client execution. The embedded OLE object's data is likely to contain malicious code or a script. While no specific script content is directly visible, the heuristic firings strongly suggest the exploitation of an OLE object to achieve code execution, which is commonly used to download and run further malicious stages.

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_off000014a4.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x14A4	4349 bytes
SHA-256: `93f31eb1d661d5d1f66dc2492a8ca57858ee9f52b234e1e29c9fb84d5d3ca831`

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