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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 caf43e568f8088ba73d4fcbd3ad298a4b84bc673a20d4dbed40ca5c66f917ca0. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: caf43e568f8088ba73d4fcbd3ad298a4b84bc673a20d4dbed40ca5c66f917ca0
SHA3-384 hash: ff467ee8478865a4cd56e6eb89fd07784607b09224ec40154d1b77ada23b722f0451d8c95c9c0687a04bb3eba8605f3e
SHA1 hash: 7878a1e9ea61e9469fe318d04b50a163dea1bc20
MD5 hash: 7b74e1e1f96e6489b377454fad572352
humanhash: johnny-delta-bravo-network
File name:Barclays Bank Confirmation copy.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:2'033'085 bytes
First seen:2026-09-22 06:42:27 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:b1Du4gJf3fPtOXBaWmellEKRQlAfef5LqEjSY+nzfxjkMmRGyJXsq2VW7pyP9e:tu93sLmeWAGf5LElzt2RhXqW0o
TLSH T12C955A067CE791554ACDF217287C68546C031AFFA6708B0B1C8B947AAD983B2D733B5B
Magika c
Reporter lowmal3
Tags:js RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
146
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug autoit base64 evasive expired-cert fingerprint formbook keylogger lolbin obfuscated obfuscated persistence reconnaissance repaired schtasks
Link:
https://www.filescan.io/uploads/6ab22381f686bbaa07647b99/reports/1977ca00-be78-4c79-8895-1bcf0c8b440d/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/caf43e568f8088ba73d4fcbd3ad298a4b84bc673a20d4dbed40ca5c66f917ca0
Verdict:
Malicious
File Type:
js
First seen:
2026-09-16T11:06:00Z UTC
Last seen:
2026-09-23T08:33:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/caf43e568f8088ba73d4fcbd3ad298a4b84bc673a20d4dbed40ca5c66f917ca0/results?tab=lookup
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1975979
Signature
C2 URLs / IPs found in malware configuration
Detected Remcos RAT
Detected Windows Script Host debugger hammering
Found malware configuration
Installs a global keyboard hook
JavaScript file contains suspicious strings
JavaScript source code contains call to eval() to check own source code (likely for evading instrumentation)
JavaScript source code contains functionality to generate code involving a shell, file or stream
JScript performs obfuscated calls to suspicious functions
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Sigma detected: WScript or CScript Dropper - File
Unusual module load detection (module proxying)
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
WScript reads language and country specific registry keys (likely country aware script)
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1975979 Sample: Barclays Bank Confirmation ... Startdate: 22/09/2026 Architecture: WINDOWS Score: 100 31 Found malware configuration 2->31 33 Malicious sample detected (through community Yara rule) 2->33 35 Multi AV Scanner detection for submitted file 2->35 37 9 other signatures 2->37 7 wscript.exe 7 13 2->7         started        process3 file4 23 Barclays Bank Conf....js:Zone.Identifier, ASCII 7->23 dropped 25 C:\...\Barclays Bank Confirmation copy.js, Unicode 7->25 dropped 41 JScript performs obfuscated calls to suspicious functions 7->41 43 Windows Scripting host queries suspicious COM object (likely to drop second stage) 7->43 45 WScript reads language and country specific registry keys (likely country aware script) 7->45 47 Detected Windows Script Host debugger hammering 7->47 11 support.exe 4 2 7->11         started        16 cmd.exe 1 7->16         started        signatures5 process6 dnsIp7 29 173.231.39.65, 2404, 49725, 49726 WEBNX-WebNXIncUS United States 11->29 27 C:\ProgramData\remcos\logs.dat, data 11->27 dropped 49 Detected Remcos RAT 11->49 51 Installs a global keyboard hook 11->51 53 Unusual module load detection (module proxying) 11->53 55 Uses schtasks.exe or at.exe to add and modify task schedules 16->55 18 conhost.exe 16->18         started        21 schtasks.exe 1 16->21         started        file8 signatures9 process10 signatures11 39 Installs a global keyboard hook 18->39
Score:
80%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/caf43e568f8088ba73d4fcbd3ad298a4b84bc673a20d4dbed40ca5c66f917ca0
Verdict:
inconclusive
YARA:
2 match(es)
Tags:
Javascript T1059.007
Link:
https://app.malva.re/file/7b74e1e1f96e6489b377454fad572352
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/caf43e568f8088ba73d4fcbd3ad298a4b84bc673a20d4dbed40ca5c66f917ca0/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2026-09-17 00:55:14 UTC
File Type:
Text (JavaScript)
AV detection:
10 of 38 (26.32%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zl2d4vupqcelu46u7s6tvuuyus4exrttuigu3pwubss4m34rpsqa._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
execution persistence
Link:
https://tria.ge/reports/260922-hg11kssz6j/
Behaviour
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Executes a command shell one-liner
Checks computer location settings
Executes dropped EXE
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/caf43e568f8088ba73d4fcbd3ad298a4b84bc673a20d4dbed40ca5c66f917ca0

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: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:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:SUSP_Script_PowerShell_Hidden_Launcher
Create hunting rule
Author:Marjoriefort
Description:Script (JS/VBS) lancant PowerShell en mode furtif - dropper frais MalwareBazaar
Reference:Veille fraicheur 2026-09-14 / cluster misses web

File information

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

Web download

RemcosRAT

Java Script (JS) js caf43e568f8088ba73d4fcbd3ad298a4b84bc673a20d4dbed40ca5c66f917ca0

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3918184/
  
Delivery method
Distributed via web download

Comments