RTF malware analysis — malicious · a6bf599967470421

MALICIOUS

RTF

5.6 KB Authoring application: Msftedit 5.41.21.2510 First seen: 2018-11-13

MD5: bfd5273c8238c452010042dc227d1275 SHA-1: 08626e6f53e661fd4d3b88a280cb0afaeaac916a SHA-256: a6bf599967470421fbb8f5171ce5200b9cd3a7fc0b48ee85d865b40ddf22ff2c

222 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains an OLE object that is automatically linked and updated, indicating an attempt to activate remote content. The critical CVE-2017-0199 heuristic firing confirms exploitation of this vulnerability, targeting the embedded URL http://192.168.178.157:8080//. This suggests the file is designed to download and execute a secondary payload from the specified address.

Heuristics 6

CVE-2017-0199 (OLE2Link / remote URL Moniker) critical CVE likely CVE_2017_0199

RTF contains a URL Moniker OLE link whose decoded target is remote. Office can fetch and process the response through the CVE-2017-0199 OLE2Link attack path, but the server-side content type is not proven statically.
ClamAV: Rtf.Exploit.CVE_2017_0199-6335035-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Rtf.Exploit.CVE_2017_0199-6335035-0
Automatically linked OLE object high RTF_OBJAUTLINK

RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
\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
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://192.168.178.157:8080// In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000104.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x104	2724 bytes
SHA-256: `76b35726729d4972460db1793ade33a58f02ed49901ef0cf0c676f96d36e8a01`

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