MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f1a2ec195c60a1f8789ac36368ae30a2b187858c957115bf88f40344bf0e6fa. 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 9 File information Comments

SHA256 hash: 3f1a2ec195c60a1f8789ac36368ae30a2b187858c957115bf88f40344bf0e6fa
SHA3-384 hash: 6eb6a84458cac6f6f7390e6bb7868236d890e5a12bea9da8c34007672dcbab79f982b17c2a944d393c3ffc9cd509b3a6
SHA1 hash: 95b7277e3bdabe4d85e9a4fb5f7de8c05c6370e6
MD5 hash: 0339d1393354ef634d7517bd4704a3c2
humanhash: mirror-september-sink-one
File name:0339d1393354ef634d7517bd4704a3c2.exe
Download: download sample
Signature RemcosRAT
File size:1'383'160 bytes
First seen:2020-12-21 07:49:01 UTC
Last seen:2020-12-21 09:34:09 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:3rp0ghLYATjUsjDU7YSg8+3F+pWknOEoCoPemGPWEIIfoja99PZ0SPduYTfhDch+:bp0h/
Threatray 1'261 similar samples on MalwareBazaar
TLSH B355310249816CCBD7B2D090A34EC6D6B38795DCE7EA6FD4AE10E21532CC477EBA9D41
Reporter abuse_ch
Tags:exe RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu:2017

Intelligence


File Origin
# of uploads :
2
# of downloads :
147
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2019-2020_SOA_Payment_21Dec2020.xlsx
Verdict:
Malicious activity
Analysis date:
2020-12-21 06:44:52 UTC
Tags:
encrypted exploit CVE-2017-11882 rat remcos keylogger

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

Behaviour
Adding an access-denied ACE
Creating a file
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a process with a hidden window
Creating a window
Sending a UDP request
Deleting a recently created file
Running batch commands
DNS request
Connection attempt
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Detection:
malicious
Classification:
troj.evad
Score:
76 / 100
Signature
.NET source code contains very large strings
Detected Remcos RAT
Hides threads from debuggers
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 332693 Sample: uyftW7XgR7.exe Startdate: 21/12/2020 Architecture: WINDOWS Score: 76 13 Multi AV Scanner detection for submitted file 2->13 15 Detected Remcos RAT 2->15 17 Yara detected Remcos RAT 2->17 19 2 other signatures 2->19 6 uyftW7XgR7.exe 2 2->6         started        process3 signatures4 21 Hides threads from debuggers 6->21 9 uyftW7XgR7.exe 6->9         started        11 uyftW7XgR7.exe 6->11         started        process5
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Status:
Malicious
First seen:
2020-12-21 07:49:05 UTC
AV detection:
16 of 29 (55.17%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos persistence rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu:2017
Unpacked files
SH256 hash:
3f1a2ec195c60a1f8789ac36368ae30a2b187858c957115bf88f40344bf0e6fa
MD5 hash:
0339d1393354ef634d7517bd4704a3c2
SHA1 hash:
95b7277e3bdabe4d85e9a4fb5f7de8c05c6370e6
SH256 hash:
0afaf5864348f90a56329d6e2830e9174249420ecaddc5c1b79765a970c7f474
MD5 hash:
4d6e4e0fee721542d0b5f636c5cb63d8
SHA1 hash:
57e32baee5bbd2ec32157efad4161b3b74f3aca5
SH256 hash:
fdc92902f0cb09f325201e9072cc43bfecdf32ea4199b3e53db3f5c433031479
MD5 hash:
b1c44c1b03ddd37f559369eeb42bc2b6
SHA1 hash:
174a77cfaaae5918a49d29156ecb9d4f65604129
Detections:
win_remcos_g0 win_remcos_auto
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:ach_RemcosRAT
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Keylog_bin_mem
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Rule name:win_remcos_auto
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information


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

Web download

RemcosRAT

Executable exe 3f1a2ec195c60a1f8789ac36368ae30a2b187858c957115bf88f40344bf0e6fa

(this sample)

  
Delivery method
Distributed via web download

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