MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3d9744bfdd9d8e6dc31dd3f8b6485a0acb76d96dc0dd121248e29a3d975b600f. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments 1

SHA256 hash: 3d9744bfdd9d8e6dc31dd3f8b6485a0acb76d96dc0dd121248e29a3d975b600f
SHA3-384 hash: 48cefe873d3d76ec06034371adc12517fc2ccd9221f34dc8da2bb0046dbeb11165ce2e811fc360f42ee750b9a0f0cf56
SHA1 hash: 61cd7eb2ee3b0e0664b5efd753a342c5a2ceb7fd
MD5 hash: c7d0967e4b8c8a0a1309e97d549b828d
humanhash: west-hawaii-berlin-pennsylvania
File name:c7d0967e4b8c8a0a1309e97d549b828d
Download: download sample
Signature RemcosRAT
File size:66'605 bytes
First seen:2024-04-16 16:30:43 UTC
Last seen:Never
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 1536:DIPFRGUXgszsu7AfpTlOttmtDVvhCXlnYfSEdsmV0Dwfhq5e15C3f:Dgnwszsu02tt4TWlqDdYDwfE5e15C3f
TLSH T12853E22EE70F0915DF55D77B034A4B4A09FCB33DB28540A579AC973837AD82E4A6287C
Reporter zbetcheckin
Tags:CVE-2017-11882 RemcosRAT rtf

Intelligence


File Origin
# of uploads :
1
# of downloads :
123
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
3d9744bfdd9d8e6dc31dd3f8b6485a0acb76d96dc0dd121248e29a3d975b600f.rtf
Verdict:
Suspicious activity
Analysis date:
2024-04-16 16:35:16 UTC
Tags:
n/a

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
Searching for synchronization primitives
Launching a process
Using the Windows Management Instrumentation requests
Creating a window
Sending an HTTP GET request
Creating a file in the %AppData% directory
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Creating a process with a hidden window
Running batch commands
Creating a file
Launching a service
Moving a file to the Program Files subdirectory
Replacing files
Connection attempt by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
RTF File
Behaviour
BlacklistAPI detected
Gathering data
Result
Verdict:
MALICIOUS
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Connects to a pastebin service (likely for C&C)
Document exploit detected (process start blacklist hit)
Installs new ROOT certificates
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted 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: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
System process connects to network (likely due to code injection or exploit)
Uses certutil -decode
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1426916 Sample: mrOdyevwvZ.rtf Startdate: 16/04/2024 Architecture: WINDOWS Score: 100 35 Malicious sample detected (through community Yara rule) 2->35 37 Antivirus / Scanner detection for submitted sample 2->37 39 Multi AV Scanner detection for submitted file 2->39 41 10 other signatures 2->41 8 WINWORD.EXE 336 13 2->8         started        process3 process4 10 EQNEDT32.EXE 12 8->10         started        15 EQNEDT32.EXE 8->15         started        dnsIp5 33 192.3.95.218, 49161, 80 AS-COLOCROSSINGUS United States 10->33 27 C:\Users\user\...\exampleofkissinglovers.vbs, Unicode 10->27 dropped 53 Office equation editor establishes network connection 10->53 55 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 10->55 17 wscript.exe 6 13 10->17         started        file6 signatures7 process8 dnsIp9 29 paste.ee 17->29 31 paste.ee 172.67.187.200, 443, 49162 CLOUDFLARENETUS United States 17->31 43 System process connects to network (likely due to code injection or exploit) 17->43 45 Uses certutil -decode 17->45 47 Installs new ROOT certificates 17->47 49 Windows Scripting host queries suspicious COM object (likely to drop second stage) 17->49 21 WerFault.exe 3 17 17->21         started        23 cmd.exe 1 17->23         started        25 certutil.exe 1 17->25         started        signatures10 51 Connects to a pastebin service (likely for C&C) 29->51 process11
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2024-04-16 13:35:01 UTC
File Type:
Document
Extracted files:
4
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
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 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
Blocklisted process makes network request
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 3d9744bfdd9d8e6dc31dd3f8b6485a0acb76d96dc0dd121248e29a3d975b600f

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2024-04-16 16:30:44 UTC

url : hxxp://192.3.95.218/5455/gmn/needfreshlovequotestotakeyouininterestedkisserloverwhohavesuchamemorytoloveherkisshertrulyfor__sheisbeautifulgirl.doc