MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c71eac19ad546b1d4e4ed84966072f03236e6d0ed99e6ce94bc19df2bac3b0e1. 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: c71eac19ad546b1d4e4ed84966072f03236e6d0ed99e6ce94bc19df2bac3b0e1
SHA3-384 hash: 26292a3d09b0dbe09f265453784c4d408133c4be093b2a68c5a6279fff24ed710b62e47d0389e012acac96f721ac5f83
SHA1 hash: 3a53ed1c86357db8dc36806c5d412a5efa011ea9
MD5 hash: 42e4fc9cb2683b6f956feaec6a222c17
humanhash: twenty-tennis-vermont-sodium
File name:42e4fc9cb2683b6f956feaec6a222c17.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'963'216 bytes
First seen:2020-12-18 07:47:45 UTC
Last seen:2020-12-18 09:59:12 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 24576:wO9rrexdJickBavGnMX9NsQVPpABwNFsgsl0/88SRYo://4uBav8cqBCsZlU88A
Threatray 1'619 similar samples on MalwareBazaar
TLSH E8955B51F840395F7A8A40F09ED766ECE1D6301925761B398D6328BCDA2D14BBCDF8B2
Reporter abuse_ch
Tags:exe RAT RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
121
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
42e4fc9cb2683b6f956feaec6a222c17.exe
Verdict:
Malicious activity
Analysis date:
2020-12-18 07:50:02 UTC
Tags:
trojan rat remcos stealer keylogger
Link:
https://app.any.run/tasks/f677d143-8d38-4d4c-b5d0-45aad2d51727

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/108314/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.35755593.8698.16371.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
Sending a UDP request
Deleting a recently created file
Running batch commands
DNS request
Sending a custom TCP request
Reading critical registry keys
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
Stealing user critical data
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:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/566045
Signature
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
Country aware sample found (crashes after keyboard check)
Detected Remcos RAT
Detected unpacking (creates a PE file in dynamic memory)
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
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 332101 Sample: qOVqoUpRyF.exe Startdate: 18/12/2020 Architecture: WINDOWS Score: 100 79 Multi AV Scanner detection for domain / URL 2->79 81 Malicious sample detected (through community Yara rule) 2->81 83 Multi AV Scanner detection for submitted file 2->83 85 5 other signatures 2->85 11 qOVqoUpRyF.exe 2 2->11         started        14 vlc.exe 2 2->14         started        16 vlc.exe 2 2->16         started        process3 signatures4 95 Contains functionality to steal Chrome passwords or cookies 11->95 97 Contains functionality to capture and log keystrokes 11->97 99 Contains functionality to inject code into remote processes 11->99 101 Contains functionality to steal Firefox passwords or cookies 11->101 18 qOVqoUpRyF.exe 4 4 11->18         started        21 WerFault.exe 23 9 11->21         started        103 Hides threads from debuggers 14->103 105 Injects a PE file into a foreign processes 14->105 23 WerFault.exe 14->23         started        25 vlc.exe 14->25         started        27 vlc.exe 14->27         started        29 vlc.exe 16->29         started        31 vlc.exe 16->31         started        process5 file6 59 C:\Users\user\AppData\Roaming\vlc.exe, PE32 18->59 dropped 61 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 18->61 dropped 33 wscript.exe 1 18->33         started        63 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 21->63 dropped 65 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 23->65 dropped process7 process8 35 cmd.exe 1 33->35         started        process9 37 vlc.exe 2 35->37         started        40 conhost.exe 35->40         started        signatures10 87 Multi AV Scanner detection for dropped file 37->87 89 Detected unpacking (creates a PE file in dynamic memory) 37->89 91 Machine Learning detection for dropped file 37->91 93 4 other signatures 37->93 42 vlc.exe 2 1 37->42         started        46 WerFault.exe 37->46         started        process11 dnsIp12 71 swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu 192.253.246.143, 2017, 49737, 49738 LEASEWEB-USA-NYC-11US United States 42->71 107 Injects a PE file into a foreign processes 42->107 49 vlc.exe 42->49         started        52 vlc.exe 42->52         started        55 vlc.exe 42->55         started        57 vlc.exe 42->57         started        67 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 46->67 dropped file13 signatures14 process15 dnsIp16 73 Tries to steal Instant Messenger accounts or passwords 49->73 75 Tries to steal Mail credentials (via file access) 49->75 69 192.168.2.1 unknown unknown 52->69 77 Tries to harvest and steal browser information (history, passwords, etc) 52->77 signatures17
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c71eac19ad546b1d4e4ed84966072f03236e6d0ed99e6ce94bc19df2bac3b0e1/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-12-17 18:36:05 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=y4pkygnnkrvr2tso3bewmbzpamrw43io3gpgz2klygo7fowdwdqq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
11b16ba733f2f4f10ac58021eecaf5668551a73e2a1acfae99745c50bfccbb44
RemcosRAT
26cfb1b24425c97fc4588631b23ca93def5d84efb2300d81bdbbb48443207292
RemcosRAT
344e6fbb3b331ae13507bca32206ceea89837dc6c02eeadeeee979d8312199b6
RemcosRAT
346c5380b5669b73b9fc43a1a17c31ea17985488e9ea947d93a1c6858ebab5e1
RemcosRAT
44cfe2788bdba5231ad53ac96614b4f0a8fe0bded01a712db0bca1317af6bd7d
RemcosRAT
485c1301f4bc84bc2d274f53222cf7ca5fbd8af8728d1aaa977a6574f577fb87
RemcosRAT
a66b740c103035f94d2d78140ead520be0e9ee0c218ab7dc17ebb3cfa2ea4f86
RemcosRAT
c032e316eefbacca4b3ddfe7fc2ee9ac5f86daea767232d2322f7fdfe4b18993
RemcosRAT
c14895a7d0ca2633b565af7c08e77aef32397f4fdc78fd3560d2f23d89aa6d6a
RemcosRAT
f7e29cbf47c9804eb341836873ea6837be7a46639978f44d9ba2670d47e68d56
RemcosRAT
+ 1'609 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence rat spyware
Link:
https://tria.ge/reports/201218-z9zl5r5ths/
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
Reads user/profile data of web browsers
Executes dropped EXE
ServiceHost packer
Remcos
Malware Config
C2 Extraction:
swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu:2017
Unpacked files
SH256 hash:
c71eac19ad546b1d4e4ed84966072f03236e6d0ed99e6ce94bc19df2bac3b0e1
MD5 hash:
42e4fc9cb2683b6f956feaec6a222c17
SHA1 hash:
3a53ed1c86357db8dc36806c5d412a5efa011ea9
Link:
https://www.unpac.me/results/713e9267-eca6-4c1d-b2a6-eceeebd78e4e/
SH256 hash:
55ef3fccd8317a144f83f72dcc254199d5fa63f42c06a54e185ffb2348e5812f
MD5 hash:
95d7a1ee7f2d3ac9a4538be02ae01ebc
SHA1 hash:
93aac09ff682d2f41fc24298415cd1b242ce94c6
Link:
https://www.unpac.me/results/713e9267-eca6-4c1d-b2a6-eceeebd78e4e/
SH256 hash:
0c1081e5208b3dfc00efe587a57a7219e0587bc194e386ae97e7e5dd39241564
MD5 hash:
3f6ead51347fec7a8ec81620f77c86e7
SHA1 hash:
ff87c89bcb6e67f586b4a118aa95d3f4bb6973a5
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/713e9267-eca6-4c1d-b2a6-eceeebd78e4e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c71eac19ad546b1d4e4ed84966072f03236e6d0ed99e6ce94bc19df2bac3b0e1

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 c71eac19ad546b1d4e4ed84966072f03236e6d0ed99e6ce94bc19df2bac3b0e1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/924670/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/108314/

Comments