MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6be9c322b4d691b46920bcdff155fe48e785d04a72bbe6c00956f6d8e455b531. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry



RemcosRAT


Vendor detections: 13


Intelligence 13 IOCs YARA 2 File information Comments 1

SHA256 hash: 6be9c322b4d691b46920bcdff155fe48e785d04a72bbe6c00956f6d8e455b531
SHA3-384 hash: fdd91c57b9e3dcbf9d515461c52525632f741d284d94fdc3f81676daf93788eac11cb12875d9d5d3bc502fbe988dee06
SHA1 hash: 2128f449172b10a8fec045855d2829669f56fe30
MD5 hash: e3b452029e1713145f0d95258fc64b3c
humanhash: ceiling-east-blossom-fillet
File name:e3b452029e1713145f0d95258fc64b3c
Download: download sample
Signature RemcosRAT
File size:25'705 bytes
First seen:2023-05-26 02:19:43 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:uAW5k/gxGLOhkbp2o/8ZbNdp5QGOmTqSefe3EpB5S1Tf+/b/UHty0PnF:uAW5k/gxQykd2oEZbNd0mVeG3Ej8fAb+
TLSH T1E4B2D1565B8C4C62E26AF8BB465EA00E58FCF63630C215C4BD9DD2713B7D50E0B6B1B8
Reporter zbetcheckin
Tags:CVE-2017-11882 RemcosRAT rtf

Intelligence


File Origin
# of uploads :
1
# of downloads :
121
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
e3b452029e1713145f0d95258fc64b3c
Verdict:
Malicious activity
Analysis date:
2023-05-26 02:20:22 UTC
Tags:
opendir exploit cve-2017-11882 loader keylogger remcos

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Result
Verdict:
Malicious
File Type:
RTF File
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit fingerprint lolbin shellcode stealer
Result
Verdict:
MALICIOUS
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to modify clipboard data
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Creates an undocumented autostart registry key
Delayed program exit found
Drops PE files to the user root directory
Encrypted powershell cmdline option found
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Remcos
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 875961 Sample: E9T4vXIiba.rtf Startdate: 26/05/2023 Architecture: WINDOWS Score: 100 49 Multi AV Scanner detection for domain / URL 2->49 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 18 other signatures 2->55 7 EQNEDT32.EXE 12 2->7         started        12 WINWORD.EXE 291 18 2->12         started        process3 dnsIp4 37 104.234.10.91, 49181, 80 VELCOMCA Canada 7->37 25 C:\Users\user\AppData\Local\...\IE_NET[1].exe, PE32 7->25 dropped 27 C:\Users\Public\IE_NET.exe, PE32 7->27 dropped 59 Office equation editor establishes network connection 7->59 61 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->61 14 IE_NET.exe 13 10 7->14         started        29 ~WRF{C63BEBD8-DB56...7-006E85D39E84}.tmp, Composite 12->29 dropped file5 signatures6 process7 dnsIp8 39 corpotechgroup.com 162.213.196.78, 49182, 80 INCERO-HVVCUS United States 14->39 31 C:\Users\user\AppData\Roaming\...\msbuld.exe, PE32 14->31 dropped 41 Antivirus detection for dropped file 14->41 43 Contains functionality to bypass UAC (CMSTPLUA) 14->43 45 Creates an undocumented autostart registry key 14->45 47 8 other signatures 14->47 19 IE_NET.exe 3 13 14->19         started        23 powershell.exe 6 14->23         started        file9 signatures10 process11 dnsIp12 33 divdemoce.duckdns.org 192.30.89.67, 35639, 49183 CLOUDSINGULARITYCA Canada 19->33 35 geoplugin.net 178.237.33.50, 49184, 80 ATOM86-ASATOM86NL Netherlands 19->35 57 Installs a global keyboard hook 19->57 signatures13
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2023-05-26 01:22:45 UTC
File Type:
Document
Extracted files:
4
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:remotehost rat
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Remcos
Malware Config
C2 Extraction:
divdemoce.duckdns.org:35639
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures


MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:INDICATOR_RTF_MalVer_Objects
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.
Rule name:SUSP_INDICATOR_RTF_MalVer_Objects
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:https://github.com/ditekshen/detection

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Web download

RemcosRAT

Rich Text Format (RTF) rtf 6be9c322b4d691b46920bcdff155fe48e785d04a72bbe6c00956f6d8e455b531

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2023-05-26 02:19:49 UTC

url : hxxp://104.234.10.91/jij/jjjiijjjiijjjiijjji%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23jijiji.doc