MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d81b7fc5ccf7a9daefef61a374786666c75edf242c938448446045cc21fed7c7. 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: d81b7fc5ccf7a9daefef61a374786666c75edf242c938448446045cc21fed7c7
SHA3-384 hash: 44f8fbf514d12daa4cde6d9339ed681e4f184798cf0974bebebbe9a7a5ee7c55ac43e075c983285e67b5379e2b9c1ebb
SHA1 hash: bb22634c1d1054064b4cc3304ceeab4ff57decbd
MD5 hash: aa9096f0aab2adaafd38b736b2dccfd3
humanhash: delaware-solar-bakerloo-illinois
File name:aa9096f0aab2adaafd38b736b2dccfd3.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'406'464 bytes
First seen:2021-02-10 07:27:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'750 x AgentTesla, 19'656 x Formbook, 12'248 x SnakeKeylogger)
ssdeep 1536:j+ltHf2/rLZqtqs/8q0mv46qw4nGXBHTRgjygGJUSfbtqL5CytYK5GLykVRMt8pV:qr7F
Threatray 1'531 similar samples on MalwareBazaar
TLSH F155EA443F131298FAB732F89157A51C332FCA70D717166A462EC2E58377E8AAD5BC21
Reporter abuse_ch
Tags:exe RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
gdyhjjdhbvxgsfe.gotdns.ch:2177

Intelligence

File Origin
# of uploads :
1
# of downloads :
97
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
aa9096f0aab2adaafd38b736b2dccfd3.exe
Verdict:
Malicious activity
Analysis date:
2021-02-10 07:30:54 UTC
Tags:
trojan rat remcos keylogger
Link:
https://app.any.run/tasks/9189dbd6-92e1-451e-9190-587ae5b51f40

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/116393/
Detection(s):
SecuriteInfo.com.Variant.MSILHeracles.6070.2774.29614.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Running batch commands
Creating a process with a hidden window
Launching a process
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 window
Deleting a recently created file
Sending a UDP request
DNS request
Sending a custom TCP 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/604276
Signature
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
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: 351166 Sample: EeA8OHCoXT.exe Startdate: 10/02/2021 Architecture: WINDOWS Score: 100 75 gdyhjjdhbvxgsfe.gotdns.ch 2->75 81 Multi AV Scanner detection for domain / URL 2->81 83 Malicious sample detected (through community Yara rule) 2->83 85 Multi AV Scanner detection for submitted file 2->85 87 4 other signatures 2->87 12 EeA8OHCoXT.exe 3 2->12         started        15 win.exe 3 2->15         started        17 win.exe 2->17         started        signatures3 process4 signatures5 95 Contains functionality to steal Chrome passwords or cookies 12->95 97 Contains functionality to capture and log keystrokes 12->97 99 Contains functionality to inject code into remote processes 12->99 105 2 other signatures 12->105 19 EeA8OHCoXT.exe 4 4 12->19         started        22 WerFault.exe 23 9 12->22         started        25 cmd.exe 1 12->25         started        101 Hides threads from debuggers 15->101 103 Injects a PE file into a foreign processes 15->103 27 cmd.exe 15->27         started        29 win.exe 15->29         started        31 WerFault.exe 15->31         started        33 cmd.exe 17->33         started        process6 dnsIp7 69 C:\Users\user\AppData\Roaming\win.exe, PE32 19->69 dropped 71 C:\Users\user\...\win.exe:Zone.Identifier, ASCII 19->71 dropped 35 wscript.exe 1 19->35         started        77 192.168.2.1 unknown unknown 22->77 73 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 22->73 dropped 37 conhost.exe 25->37         started        39 timeout.exe 1 25->39         started        41 conhost.exe 27->41         started        43 timeout.exe 27->43         started        45 conhost.exe 33->45         started        47 timeout.exe 33->47         started        file8 process9 process10 49 cmd.exe 1 35->49         started        process11 51 win.exe 4 49->51         started        54 conhost.exe 49->54         started        signatures12 89 Multi AV Scanner detection for dropped file 51->89 91 Hides threads from debuggers 51->91 93 Injects a PE file into a foreign processes 51->93 56 win.exe 51->56         started        59 cmd.exe 51->59         started        61 win.exe 51->61         started        63 win.exe 51->63         started        process13 dnsIp14 79 gdyhjjdhbvxgsfe.gotdns.ch 188.72.85.37, 2177 M247GB Netherlands 56->79 65 conhost.exe 59->65         started        67 timeout.exe 59->67         started        process15
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d81b7fc5ccf7a9daefef61a374786666c75edf242c938448446045cc21fed7c7/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-08 16:28:52 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=3anx7rom66u5v37pmgrxi6dgm3dv5xzefsjyiscembc4yip627dq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
21691425c52cf7a77c0e3a65cc1c0c59cb026d5b76e78160ebb8a553f9bbe50c
RemcosRAT
3b1b352f3c4d0fe235b45d9db418e1e4155ab31265ee368ed646ac38071a2eda
RemcosRAT
4791861118e0be776fd14153e2feca7d25f5a91a6c32a997385f5ae272e3d7c8
RemcosRAT
4b8335250b1cfcb5fac9790261dd43f5efcbc187c68961ee5afd34662d0599ed
RemcosRAT
5b10f4a23880b51923a0df3e9e3c37f40eb0d3cc93de7b463da62f936a501385
RemcosRAT
61d9f4cbc76b7889d7d17d262b63c0fd2ee40642653063b1eb6ab84397f8c57b
RemcosRAT
82027bdaf86e2d0da1c45ede5efd820a1cbaace1b1b8f7675b8115d82db75f26
RemcosRAT
d34e588c8bef9cef39708c52f7f372bcd4b5fc39e4eaf0b9193aa586a10d7cc2
RemcosRAT
dfd3c33bf7be405cea03a045f3df2d9ff35f04c7da918eb916b6f224a58eea1f
RemcosRAT
e26c95b32b64e3f7b5d72d52be2fd7cb52c7a2c1df25f5337a783a1735f806ad
RemcosRAT
+ 1'521 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos persistence ransomware rat
Link:
https://tria.ge/reports/210210-74lw9xn5r6/
Behaviour
Delays execution with timeout.exe
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Enumerates physical storage devices
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:
gdyhjjdhbvxgsfe.gotdns.ch:2177
Unpacked files
SH256 hash:
a9636053c19d403fff81f306b7b4d9f737e90c528c61d9fafb161faa206c2ed9
MD5 hash:
7e53188c34ee2487d1777821e773908c
SHA1 hash:
5c7bc22657fff3602ebf0518f57752f7a08a1e9a
Detections:
win_remcos_g0
Create hunting rule
win_remcos_auto
Create hunting rule
Link:
https://www.unpac.me/results/dbd47f39-75ff-47b7-88d3-d14a2934ac42/
SH256 hash:
d81b7fc5ccf7a9daefef61a374786666c75edf242c938448446045cc21fed7c7
MD5 hash:
aa9096f0aab2adaafd38b736b2dccfd3
SHA1 hash:
bb22634c1d1054064b4cc3304ceeab4ff57decbd
Link:
https://www.unpac.me/results/dbd47f39-75ff-47b7-88d3-d14a2934ac42/
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/d81b7fc5ccf7a9daefef61a374786666c75edf242c938448446045cc21fed7c7

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 d81b7fc5ccf7a9daefef61a374786666c75edf242c938448446045cc21fed7c7

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/995739/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/116393/

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