RTF malware analysis — malicious · 7e6617004fab3e3a

MALICIOUS

RTF

101.7 KB First seen: 2019-01-11

MD5: 113bf76ec9ccab391fc67b37796c6585 SHA-1: b3365d947235ff47c1b17ef8bfeb1abcb1e806a5 SHA-256: 7e6617004fab3e3abd5b09d9eecf547b324459d9b333f4bd68be340f8e9c68e3

242 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains an embedded OLE object with an Equation Editor CLSID, strongly indicating exploitation of CVE-2017-11882. This vulnerability allows for arbitrary code execution. The embedded URL likely serves as a download location for a secondary payload.

Heuristics 7

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
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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://uploadtops.is/1//q/8BVgF7S In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000077c6.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x77C6	23150 bytes
SHA-256: `53b32003e4884bfe69b200b3ba0a5c8e10cd33ca372e236af8e448a3979d9082`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL, SC_PEB_ACCESS, SC_GETPC_CALL Static shellcode analysis recovered API/import strings: LoadLibraryA, GetProcAddress, ExitProcess, URLDownloadToFileA, ShellExecuteA

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