MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c4e185352244f5809357a49331ba037a6dc3e69377e72abd90912117cbb30d26. 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 1 YARA 35 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c4e185352244f5809357a49331ba037a6dc3e69377e72abd90912117cbb30d26
SHA3-384 hash: e112d85c51923fae55d1ada3fb2753ba102fe7746748bd960a56cc14569d00afa78d196abc22e780bd0fef005860eb84
SHA1 hash: bc7c15216569951b044caf3a10591726c43e6155
MD5 hash: fd4b60fe71be21398def8fc0e7baf460
humanhash: massachusetts-alabama-tennis-indigo
File name:output1761738895.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:808'286 bytes
First seen:2025-10-29 16:35:09 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 12288:idNR4hQ4lcc/CyczaEMizfcTwZarLfFlmCdV3eLbG7G8iLIyEhzPMcXSEEL:8OKykaScTL5lzyqNXJq
Threatray 1'189 similar samples on MalwareBazaar
TLSH T1E905F1388A68BFD4137870DDEC643E020F54CE7AF7E6CE24B15464A53958A8887D53AF
Magika vba
Reporter abuse_ch
Tags:RAT RemcosRAT vbs


Avatar
abuse_ch
RemcosRAT C2:
216.250.251.199:4020

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
216.250.251.199:4020 https://threatfox.abuse.ch/ioc/1628345/

Intelligence

File Origin
# of uploads :
1
# of downloads :
80
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/34686/
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=690244e5706befaf4eca0cc1
Tags:
n/a
Verdict:
Malicious
Labled as:
VBS/TrojanDropper.Agent
Link:
https://www.hybrid-analysis.com/sample/c4e185352244f5809357a49331ba037a6dc3e69377e72abd90912117cbb30d26
Verdict:
Malicious
File Type:
text
First seen:
2025-10-29T10:49:00Z UTC
Last seen:
2025-10-29T19:17:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/c4e185352244f5809357a49331ba037a6dc3e69377e72abd90912117cbb30d26/results?tab=lookup
Result
Threat name:
Remcos, DonutLoader
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1804176
Signature
.NET source code contains a sample name check
.NET source code references suspicious native API functions
Antivirus detection for dropped file
Attempt to bypass Chrome Application-Bound Encryption
C2 URLs / IPs found in malware configuration
Creates processes via WMI
Detected Remcos RAT
Found evasive API chain checking for user administrative privileges
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Potential Data Stealing Via Chromium Headless Debugging
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded IEX Cmdlet
Sigma detected: Remcos
Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
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 / registry access)
Tries to steal Mail credentials (via file registry)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected DonutLoader
Yara detected Powershell decode and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1804176 Sample: output1761738895.vbs Startdate: 29/10/2025 Architecture: WINDOWS Score: 100 67 Suricata IDS alerts for network traffic 2->67 69 Found malware configuration 2->69 71 Malicious sample detected (through community Yara rule) 2->71 73 19 other signatures 2->73 11 wscript.exe 1 2->11         started        process3 file4 51 C:\Users\Public\HarvestDistrict.bat, ASCII 11->51 dropped 87 Wscript starts Powershell (via cmd or directly) 11->87 89 Windows Scripting host queries suspicious COM object (likely to drop second stage) 11->89 91 Suspicious execution chain found 11->91 93 Creates processes via WMI 11->93 15 cmd.exe 1 11->15         started        signatures5 process6 signatures7 95 Suspicious powershell command line found 15->95 97 Wscript starts Powershell (via cmd or directly) 15->97 18 cmd.exe 1 15->18         started        20 conhost.exe 15->20         started        process8 process9 22 cmd.exe 2 18->22         started        signatures10 75 Suspicious powershell command line found 22->75 77 Wscript starts Powershell (via cmd or directly) 22->77 25 powershell.exe 10 37 22->25         started        30 conhost.exe 22->30         started        process11 dnsIp12 53 216.250.251.199, 4020, 49716, 49719 AS-TIERP-19019US United States 25->53 55 127.0.0.1 unknown unknown 25->55 43 C:\Users\user\AppData\Local\Temp\THB993.tmp, MS-DOS 25->43 dropped 45 C:\Users\user\AppData\Local\Temp\THB925.tmp, MS-DOS 25->45 dropped 47 C:\Users\user\AppData\Local\Temp\THB8B7.tmp, PE32 25->47 dropped 49 C:\Users\user\AppData\...\cookies.sqlite-shm, data 25->49 dropped 79 Detected Remcos RAT 25->79 81 Attempt to bypass Chrome Application-Bound Encryption 25->81 83 Tries to harvest and steal browser information (history, passwords, etc) 25->83 85 8 other signatures 25->85 32 RmClient.exe 2 25->32         started        35 RmClient.exe 1 25->35         started        37 RmClient.exe 1 25->37         started        39 2 other processes 25->39 file13 signatures14 process15 signatures16 57 Tries to steal Mail credentials (via file registry) 32->57 59 Tries to harvest and steal browser information (history, passwords, etc) 32->59 61 Creates processes via WMI 32->61 63 Tries to steal Instant Messenger accounts or passwords 35->63 65 Tries to steal Mail credentials (via file / registry access) 35->65 41 msedge.exe 39->41         started        process17
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/c4e185352244f5809357a49331ba037a6dc3e69377e72abd90912117cbb30d26
Verdict:
Malware
YARA:
2 match(es)
Tags:
Base64 Block Contains Base64 Block DeObfuscated Obfuscated PowerShell Scripting.FileSystemObject T1059.005 VBScript
Link:
https://app.malva.re/file/fd4b60fe71be21398def8fc0e7baf460
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c4e185352244f5809357a49331ba037a6dc3e69377e72abd90912117cbb30d26/
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ytqyknjcit2ybe2xusjtdoqdpjw4hzuto7tsvpmqseqrps5tbuta._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
nirsoft
Create hunting rule
donut_injector
Create hunting rule
admintool_mailpassview
Create hunting rule
Similar samples:
2516cc29b6eebbe044641f7772e61549278d0d1e164c8a75f98b884fcce2ff40
RemcosRAT
3c4850bad9e48453996875f76725ab4caf188613ec4621fef7fbca2fd19c2147
RemcosRAT
4ffb945bc637b8c2e1d287c1f6127121d967e1366f0a437f2b7f505fac391f5d
RemcosRAT
54b32bcf49895b56cc5a2f15fbefd0ed30ee9aef1aafbcf4eaf2f288e8384617
RemcosRAT
5775f78e49d3cc327678941c043fb5df1f79183482fbc4782a02e811ba8732d4
RemcosRAT
737262c8a965c09d0b6744aef7951b0edd0ef8edd9b1c2a1ca97d04b586feb1c
RemcosRAT
9c7bccc9beab63a3ebf8995eb4ad568c15e7b65421e11fadbac663d4bc8ef792
RemcosRAT
cb989e4fdf9c4b22e13f3d308eed92711a441e8323d08f395f41a76e03a97dcf
RemcosRAT
d1cfc53e81fdcf625be8284ee7ed47fa1256de5222d2b1d4064524e90724df4e
RemcosRAT
error
RemcosRAT
febef3a364126ac2aa64f960389c62bd38cc9cfced7606726afe7f0824c239a7
RemcosRAT
+ 1'179 additional samples on MalwareBazaar
Result
Malware family:
donutloader
Create hunting rule
Score:
  10/10
Tags:
family:donutloader collection credential_access discovery execution loader stealer
Link:
https://tria.ge/reports/251029-yep4asbp3x/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Launches sc.exe
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Executes dropped EXE
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Uses browser remote debugging
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Detects DonutLoader
DonutLoader
Donutloader family
Process spawned unexpected child process
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/c4e185352244f5809357a49331ba037a6dc3e69377e72abd90912117cbb30d26

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:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Remcos_unpacked_PulseIntel
Create hunting rule
Author:PulseIntel
Description:Remcos Payload
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:TeslaCryptPackedMalware
Create hunting rule
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_rat_unpacked
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:WIN_WebSocket_Base64_C2_20250726
Create hunting rule
Author:dogsafetyforeverone
Description:Detects configuration strings used by malware to specify WebSocket command-and-control endpoints inside Base64-encoded data. It looks for prefixes such as '#ws://' or '#wss://' that were found in QuasarRAT configuration data.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/34686/

Comments