MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bcee3bd40872471faf12a0efdf6ef8443550a768ef5d7cdf884a71ff13575a1e. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bcee3bd40872471faf12a0efdf6ef8443550a768ef5d7cdf884a71ff13575a1e
SHA3-384 hash: c4d2b5d3806bc7aad57ca171edbc8779b864ee6381198663f0455fbf016a680a24baddcb17c8f3ef035c1de1f8ed8017
SHA1 hash: 76076ce22bd34ac7b434fe559b61f5233780133a
MD5 hash: 689073d22b4263ca9a39503ea43fedef
humanhash: november-zulu-robin-four
File name:689073d22b4263ca9a39503ea43fedef.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'376'032 bytes
First seen:2020-12-22 08:43:37 UTC
Last seen:2020-12-22 10:34:28 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:ThLpvyrAbJtxUdmza6QXd+4bNZUQXNlroprxJnHrPrQCTNLKHkLaMGpxdhj6I4WZ:+h
Threatray 1'265 similar samples on MalwareBazaar
TLSH 85554D02498168CBD7B3D090A38DC2D6B387959DE7EA6FD4BE10E21532CC477EBA9D41
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
350
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
http://lucky-usa-8248.deci.jp/AQW.exe
Verdict:
Malicious activity
Analysis date:
2020-12-21 12:28:26 UTC
Tags:
rat remcos keylogger
Link:
https://app.any.run/tasks/ff9e5b88-618b-47a9-9452-fb547d9bc5f9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/108687/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.45100689.26101.18323.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Adding an access-denied ACE
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Creating a process with a hidden window
Creating a window
Deleting a recently created file
Running batch commands
DNS request
Connection attempt
Sending a UDP request
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:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/568031
Signature
.NET source code contains very large strings
Contains functionality to capture and log keystrokes
Contains functionality to hide a thread from the debugger
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Hides threads from debuggers
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 333087 Sample: r24Q34WWrt.exe Startdate: 22/12/2020 Architecture: WINDOWS Score: 100 60 cdn.onenote.net 2->60 66 Multi AV Scanner detection for domain / URL 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 Multi AV Scanner detection for submitted file 2->70 72 6 other signatures 2->72 11 r24Q34WWrt.exe 2 2->11         started        14 vlc.exe 2->14         started        16 vlc.exe 2 2->16         started        signatures3 process4 signatures5 82 Contains functionality to steal Chrome passwords or cookies 11->82 84 Contains functionality to capture and log keystrokes 11->84 86 Contains functionality to inject code into remote processes 11->86 92 2 other signatures 11->92 18 r24Q34WWrt.exe 4 4 11->18         started        21 WerFault.exe 23 9 11->21         started        88 Hides threads from debuggers 14->88 90 Injects a PE file into a foreign processes 14->90 23 WerFault.exe 14->23         started        25 vlc.exe 14->25         started        27 WerFault.exe 16->27         started        29 vlc.exe 16->29         started        process6 file7 48 C:\Users\user\AppData\Roaming\vlc.exe, PE32 18->48 dropped 50 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 18->50 dropped 31 wscript.exe 1 18->31         started        52 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 21->52 dropped 54 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 23->54 dropped 56 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 27->56 dropped process8 process9 33 cmd.exe 1 31->33         started        process10 35 vlc.exe 2 33->35         started        38 conhost.exe 33->38         started        signatures11 74 Multi AV Scanner detection for dropped file 35->74 76 Machine Learning detection for dropped file 35->76 78 Contains functionality to steal Chrome passwords or cookies 35->78 80 4 other signatures 35->80 40 vlc.exe 35->40         started        43 WerFault.exe 35->43         started        46 vlc.exe 35->46         started        process12 dnsIp13 62 swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu 192.253.246.137, 2017 LEASEWEB-USA-NYC-11US United States 40->62 64 192.168.2.1 unknown unknown 40->64 58 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 43->58 dropped file14
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/bcee3bd40872471faf12a0efdf6ef8443550a768ef5d7cdf884a71ff13575a1e/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-12-22 01:18:08 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xtxdxvaiojdr7lysudx563xyiq2vbj3i55oxzx4ijjy76e2xlipa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
3f1a2ec195c60a1f8789ac36368ae30a2b187858c957115bf88f40344bf0e6fa
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4a94b062dbb9df940520146d100df5b019795d0f508d7ba89d24eb18725e1608
RemcosRAT
54c9967a2b3467f1a5961630d0bd429400e781de19866a383267c40e0f9acf2f
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
b8bcf3a59b89b2ebc0fb7cfba5f8f726de83b08acd072b55c557cf89d16210c9
RemcosRAT
c14895a7d0ca2633b565af7c08e77aef32397f4fdc78fd3560d2f23d89aa6d6a
RemcosRAT
e1865abf21c3b8f3b3d15e6c6e477468941f9e65700ceaaa0f4cb269d967c83e
RemcosRAT
f6c8f18b6a8db8307ea07c171236d118f91924e497027eeb305800ba2eee4fbe
RemcosRAT
f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 1'255 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201222-wgexshxgyj/
Behaviour
Suspicious behavior: EnumeratesProcesses
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
ServiceHost packer
Remcos
Malware Config
C2 Extraction:
swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu:2017
Unpacked files
SH256 hash:
bcee3bd40872471faf12a0efdf6ef8443550a768ef5d7cdf884a71ff13575a1e
MD5 hash:
689073d22b4263ca9a39503ea43fedef
SHA1 hash:
76076ce22bd34ac7b434fe559b61f5233780133a
Link:
https://www.unpac.me/results/77d9b0b6-f5a1-4414-98be-864829865fc1/
SH256 hash:
b7e357f2e30fa99f86a6280f50cd4912fa94a1174e85dbf5842fd679b55d1aab
MD5 hash:
77cb64423d324b588c59bd585b4eabaf
SHA1 hash:
0d2470e3b6be9a265cfa71cf1b20177519928c82
Link:
https://www.unpac.me/results/77d9b0b6-f5a1-4414-98be-864829865fc1/
SH256 hash:
a2813b000f811b513a45a8411f3e724888117a8ebf43e7e7992da1d05ec3a7d8
MD5 hash:
c0310260f1d8893366f3aee192360144
SHA1 hash:
1aae61761280358916a9017cd2ce75b0b1868e18
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/77d9b0b6-f5a1-4414-98be-864829865fc1/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/bcee3bd40872471faf12a0efdf6ef8443550a768ef5d7cdf884a71ff13575a1e

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
Create hunting rule
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:Parallax
Create hunting rule
Author:@bartblaze
Description:Identifies Parallax RAT.
Rule name:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:win_remcos_auto
Create hunting rule
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 bcee3bd40872471faf12a0efdf6ef8443550a768ef5d7cdf884a71ff13575a1e

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/929851/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/108687/

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