MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 546b14e45dad5ac436d7c928dc8e325082eacf2bd329a6f21648f37a37fe507d. 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: 9


Intelligence 9 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 546b14e45dad5ac436d7c928dc8e325082eacf2bd329a6f21648f37a37fe507d
SHA3-384 hash: b517381680ae0f87ff0b01d9fb60feabe051da1909a8369c4714439c3f507e5e3bcf54ae924132867853f66474c146fd
SHA1 hash: 3a971615779624baa464d81ae4a843ece4198da5
MD5 hash: 469bbb1b2b007e7664f539d3da0b6bd6
humanhash: october-december-carpet-diet
File name:Wire tranfer_report.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:281'600 bytes
First seen:2020-11-25 14:10:09 UTC
Last seen:2020-11-25 15:57:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 3072:YQkpyNr2lLV4mCS5zKQRvEMDtXPvPx0bH9WRytQorvwk9RHZFXd/NWEEd6hfg3SN:0Z2Ik0jtp2zrjl5Hgd0gCqwNaS/8
Threatray 1'165 similar samples on MalwareBazaar
TLSH B254F15277A8C080CB15A13AD4C7B65093726E136750CA1F37DE3ACA1E2A3C649DDBCB
Reporter James_inthe_box
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
109
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/105642/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the Windows subdirectories
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
Deleting a recently created file
Running batch commands
Connection attempt
Launching a process
Enabling the 'hidden' option for recently created files
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
Unauthorized injection to a system process
Result
Gathering data
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/547010
Signature
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Creates an autostart registry key pointing to binary in C:\Windows
Detected Remcos RAT
Detected unpacking (creates a PE file in dynamic memory)
Drops executables to the windows directory (C:\Windows) and starts them
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Svchost Process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 322611 Sample: Wire tranfer_report.exe Startdate: 25/11/2020 Architecture: WINDOWS Score: 100 65 g.msn.com 2->65 81 Malicious sample detected (through community Yara rule) 2->81 83 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->83 85 Multi AV Scanner detection for submitted file 2->85 87 9 other signatures 2->87 14 Wire tranfer_report.exe 3 2->14         started        17 msworrd.exe 2 2->17         started        signatures3 process4 file5 61 C:\Users\user\...\Wire tranfer_report.exe.log, ASCII 14->61 dropped 20 Wire tranfer_report.exe 4 5 14->20         started        79 Drops executables to the windows directory (C:\Windows) and starts them 17->79 25 msworrd.exe 17->25         started        signatures6 process7 dnsIp8 67 192.168.2.1 unknown unknown 20->67 57 C:\Windows\SysWOW64\mssofficee\msworrd.exe, PE32 20->57 dropped 59 C:\Windows\...\msworrd.exe:Zone.Identifier, ASCII 20->59 dropped 89 Creates an autostart registry key pointing to binary in C:\Windows 20->89 27 wscript.exe 1 20->27         started        file9 signatures10 process11 process12 29 cmd.exe 1 27->29         started        process13 31 msworrd.exe 3 29->31         started        35 conhost.exe 29->35         started        file14 63 C:\Users\user\AppData\...\msworrd.exe.log, ASCII 31->63 dropped 71 Multi AV Scanner detection for dropped file 31->71 73 Detected unpacking (creates a PE file in dynamic memory) 31->73 75 Contains functionality to steal Chrome passwords or cookies 31->75 77 2 other signatures 31->77 37 msworrd.exe 4 2 31->37         started        41 msworrd.exe 31->41         started        signatures15 process16 dnsIp17 69 89.249.74.213, 40511, 49722, 49723 M247GB United Kingdom 37->69 91 Writes to foreign memory regions 37->91 93 Allocates memory in foreign processes 37->93 95 Injects a PE file into a foreign processes 37->95 43 svchost.exe 2 12 37->43         started        45 svchost.exe 37->45         started        signatures18 process19 process20 47 iexplore.exe 43->47         started        49 iexplore.exe 45->49         started        process21 51 iexplore.exe 47->51         started        53 iexplore.exe 47->53         started        55 iexplore.exe 47->55         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/546b14e45dad5ac436d7c928dc8e325082eacf2bd329a6f21648f37a37fe507d/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-11-25 14:09:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=krvrjzc5vvnminwxzeunzdrskcbovtzl2mu2n4qwjdzxun76kb6q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
15170d0dbe467efc4e38156ed4e03702ae19af44c100d7df7a75c6dbdb7ac587
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
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4a94b062dbb9df940520146d100df5b019795d0f508d7ba89d24eb18725e1608
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58d5f679e704a0814342eb3a02eaf780d737c6456e5ae070986330db2fa6dd18
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5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
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6c882aeb918e424cefe1068a6d3fbff5526c31e185716bf3a0d5ae0295772f09
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a7bba5cba33b4320a78cd057e3cdd5169a86e90f6550e997772f4447549fd729
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ca62c5cf8e6f3260dbe15a469e90197612af8843d897f65c7fdde87554ebae51
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d7e339a5a02ec396fb568be9485047caccf6cc9ac85a8a6448410ed26a75f7e7
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f412da03defe68cc6e1f264449adf519a4c5470c51e7b502854f7fbf358f8516
RemcosRAT
+ 1'155 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat
Link:
https://tria.ge/reports/201125-f3dqm79n86/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Drops file in System32 directory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Remcos
Malware Config
C2 Extraction:
89.249.74.213:40511
Unpacked files
SH256 hash:
546b14e45dad5ac436d7c928dc8e325082eacf2bd329a6f21648f37a37fe507d
MD5 hash:
469bbb1b2b007e7664f539d3da0b6bd6
SHA1 hash:
3a971615779624baa464d81ae4a843ece4198da5
Link:
https://www.unpac.me/results/99de7039-f87f-498e-bacf-7da9ba35b307/
SH256 hash:
5f25f05238b7e70a49c0bbb3fd3995cdbe7c48db971bee20a751e1d7e66586eb
MD5 hash:
382374aa21ee4b252d03fd81415d33c3
SHA1 hash:
92075c88f4f7de2e59626a079e5fbe6eaed6474b
Link:
https://www.unpac.me/results/99de7039-f87f-498e-bacf-7da9ba35b307/
SH256 hash:
83c08f0721c8b0c96e3d6a8f3ccaf5c96fbcc427d574625c34424c3429fefaa1
MD5 hash:
3c5dbcc3bb27e913e14efd8054811373
SHA1 hash:
b0eba9388abddaef9d5aa49ccd5dbab2924cced0
Link:
https://www.unpac.me/results/99de7039-f87f-498e-bacf-7da9ba35b307/
SH256 hash:
a7ac9077e12237be3be4793c8d18e893f2e27bbab647dcfd383ab54fca5038d8
MD5 hash:
daa46bbd971635a304f5a2e111bb93f7
SHA1 hash:
d0678804c23ec6cb5ee6079b4b46ac8824de398d
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/99de7039-f87f-498e-bacf-7da9ba35b307/
Parent samples :
546b14e45dad5ac436d7c928dc8e325082eacf2bd329a6f21648f37a37fe507d
be0874a5aac730116aa21f21765232ae5ef951d8714c9eff0e5f3aa23edfbdd0
8dcddb09beaddfaa8fb85dcce62423a505cfd3fa4881e64730b0f31aa3c54b68
cc8de0f68549d84a62dcd11df6625b2bfe08a6cfaea102f4710e28969a60f689
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/546b14e45dad5ac436d7c928dc8e325082eacf2bd329a6f21648f37a37fe507d

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: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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/105642/

Comments