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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8fcedb21d6f2fa9ab3e01ba27cb004aa57cf637eb85b25d2f7de1abf8f57d4e1. 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: 11


Intelligence 11 IOCs 1 YARA 37 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8fcedb21d6f2fa9ab3e01ba27cb004aa57cf637eb85b25d2f7de1abf8f57d4e1
SHA3-384 hash: c51c0d5f2068d6530a725eaff63b87bb6b0c6e54586264648c6c825d7cc96daf533a612e4cf6ca3d0384af841dfd45fc
SHA1 hash: 345e3c68458f23cef751e8ab094601729fa9da4d
MD5 hash: f4494efb1402da9afb8fa3864c10eed2
humanhash: zulu-mexico-monkey-idaho
File name:BillPaymentAdvicedoc0220906134.pdf.JS.JS.js
Download: download sample
Signature RemcosRAT
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File size:4'854'647 bytes
First seen:2026-10-15 06:10:33 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:application/javascript
ssdeep 98304:GsKenkeXi8cXsL4pU1ScxBsQ5T+/UQYoUftEY20RyJO8jkkOK1s2OXKxYaZKGtm9:GsroUHSyKWT+o7uYx0JlkkOkJCwKENev
TLSH T18326096E130499B63720574F513AF9609D0B915335CAEFA432DCF118369CD0BAB9EEE2
Magika javascript
Reporter abuse_ch
Tags:js RAT RemcosRAT


Avatar
abuse_ch
RemcosRAT C2:
217.60.103.76:2404

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
217.60.103.76:2404 https://threatfox.abuse.ch/ioc/1966860/

Intelligence

File Origin
# of uploads :
1
# of downloads :
215
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.JS.Trojan.Cryxos.16963.59552376.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
N/A%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ad1986e6f551121ba1672c1
Tags:
n/a
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug dropper evasive masquerade obfuscated obfuscated packed repaired unsafe
Link:
https://www.filescan.io/uploads/6ad06e691be85035e85ea009/reports/b4b6ac93-7877-4382-b163-1ab2bea95540/overview
Verdict:
Malicious
Labled as:
Trojan.Cryxos.JS
Link:
https://www.hybrid-analysis.com/sample/8fcedb21d6f2fa9ab3e01ba27cb004aa57cf637eb85b25d2f7de1abf8f57d4e1
Verdict:
Malicious
File Type:
js
First seen:
2026-10-15T04:14:00Z UTC
Last seen:
2026-10-15T19:56:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/8fcedb21d6f2fa9ab3e01ba27cb004aa57cf637eb85b25d2f7de1abf8f57d4e1/results?tab=lookup
Result
Threat name:
Remcos, DonutLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1987390
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject threads in other processes
Contains functionality to steal Internet Explorer form passwords
Detected Remcos RAT
Found API chain indicative of debugger detection
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Installs a global keyboard hook
JavaScript source code contains functionality to generate code involving a shell, file or stream
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Remcos
Sigma detected: Suspicious Command Patterns In Scheduled Task Creation
Sigma detected: Suspicious Parent Double Extension File Execution
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Tries to detect sandboxes / dynamic malware analysis system (Installed program check)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file registry)
Unusual module load detection (module proxying)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses whoami command line tool to query computer and username
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 DonutLoader
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1987390 Sample: BillPaymentAdvicedoc0220906... Startdate: 15/10/2026 Architecture: WINDOWS Score: 100 68 www.uchihachakamaru.com 2->68 86 Suricata IDS alerts for network traffic 2->86 88 Found malware configuration 2->88 90 Malicious sample detected (through community Yara rule) 2->90 92 14 other signatures 2->92 10 wscript.exe 1 4 2->10         started        13 cmd.exe 1 4 2->13         started        signatures3 process4 signatures5 94 Windows Scripting host queries suspicious COM object (likely to drop second stage) 10->94 96 WScript reads language and country specific registry keys (likely country aware script) 10->96 15 IITGKBCXABTDRISE.exe 4 8 10->15         started        20 cmd.exe 1 10->20         started        22 cmd.exe 1 13->22         started        24 conhost.exe 13->24         started        process6 dnsIp7 70 www.uchihachakamaru.com 217.60.103.76, 2404, 49743, 49744 HOSTSNAP-NETWORK-HostSNAPLLCUS Switzerland 15->70 58 C:\Users\user\...SIRDTBAXCBKGTII.url, MS 15->58 dropped 60 C:\Users\user\AppData\...\Login Data.tmp, SQLite 15->60 dropped 62 C:\Users\user\AppData\...\Login Data.tmp, SQLite 15->62 dropped 66 2 other malicious files 15->66 dropped 72 Detected Remcos RAT 15->72 74 Tries to steal Mail credentials (via file registry) 15->74 76 Found API chain indicative of debugger detection 15->76 84 6 other signatures 15->84 26 cmd.exe 1 15->26         started        29 conhost.exe 15->29         started        31 cmd.exe 1 15->31         started        33 cmd.exe 1 15->33         started        64 BillPaymentAdviced....js:Zone.Identifier, ASCII 20->64 dropped 78 Uses schtasks.exe or at.exe to add and modify task schedules 20->78 80 Uses whoami command line tool to query computer and username 20->80 35 conhost.exe 20->35         started        37 IITGKBCXABTDRISE.exe 1 22->37         started        39 conhost.exe 22->39         started        82 Installs a global keyboard hook 24->82 file8 signatures9 process10 signatures11 98 Uses whoami command line tool to query computer and username 26->98 41 whoami.exe 1 26->41         started        43 schtasks.exe 1 31->43         started        45 schtasks.exe 1 33->45         started        100 Detected Remcos RAT 37->100 102 Found direct / indirect Syscall (likely to bypass EDR) 37->102 47 cmd.exe 37->47         started        50 conhost.exe 37->50         started        52 cmd.exe 37->52         started        104 Installs a global keyboard hook 39->104 process12 signatures13 106 Uses whoami command line tool to query computer and username 47->106 54 whoami.exe 1 47->54         started        108 Installs a global keyboard hook 50->108 56 schtasks.exe 1 52->56         started        process14
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/8fcedb21d6f2fa9ab3e01ba27cb004aa57cf637eb85b25d2f7de1abf8f57d4e1
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8fcedb21d6f2fa9ab3e01ba27cb004aa57cf637eb85b25d2f7de1abf8f57d4e1/
Threat name:
Script-JS.Trojan.Cryxos
Create hunting rule
Status:
Malicious
First seen:
2026-10-15 06:11:33 UTC
File Type:
Text (JavaScript)
AV detection:
11 of 38 (28.95%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=r7hnwiow6l5jvm7adorhzmaevjl46y36xbnsluxx3ynl7d2x2tqq._file
Verdict:
malicious
Label(s):
DonutLoader
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Remcos
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Link:
https://reports.threatray.com/b209acfa-ddd7-486f-85c2-b82f36bf7425
Result
Malware family:
remcos
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Score:
  10/10
Tags:
family:donutloader family:remcos botnet:remotehost collection discovery execution loader persistence rat spyware stealer suricata
Link:
https://tria.ge/reports/261015-gxe8daes6j/
Behaviour
Modifies registry class
NTFS ADS
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
outlook_office_path
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Executes a command shell one-liner
Reads the TCP/IP host and domain name from the registry
Accesses Microsoft Outlook profiles
Checks installed software on the system
Checks computer location settings
Executes dropped EXE
Reads user/profile data of web browsers
Detects DonutLoader
Family: DonutLoader
Family: Remcos
Suricata alert: REMCOS RAT Malware Inbound C2 Communication
Suricata alert: REMCOS RAT Malware Outbound C2 Communication
Malware Config
C2 Extraction:
www.uchihachakamaru.com:2404
www.uchihachakamarubackup1.com:2404
www.uchihachakamarubackup2.com:2404
www.uchihachakamarubackup3.com:2404
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/8fcedb21d6f2fa9ab3e01ba27cb004aa57cf637eb85b25d2f7de1abf8f57d4e1

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: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: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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
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Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
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:MULTI_Malware_AgentTesla_ForgeAuto_ed343f78_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects AgentTesla (inconnu, etat extrait)
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_RAT_variants
Create hunting rule
Rule name:Remcos_unpacked_PulseIntel
Create hunting rule
Author:PulseIntel
Description:Remcos Payload
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
Rule name:SUSP_VBS_Randomized_ActiveX_Downloader
Create hunting rule
Author:Marjoriefort
Description:Dropper VBS obfusque : ActiveXObject a identifiant randomise (20 MAJ), SaveToFile, .Run
Reference:Veille fraicheur 2026-09-14 / grappe VBS randomisee
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:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:TigerRAT_pe_yaraify
Create hunting rule
Author:hunts-yara-code
Description:YARAify-tightened byte rule from 9 sample(s) -- VERIFY hits
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.
Rule name:Windows_Trojan_Remcos_921ef449
Create hunting rule
Author:Elastic Security
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_Clipboard_Clipper_Thengavar
Create hunting rule
Author:Thengavar
Description:Detects malware manipulating the Windows clipboard for clipping or crypto stealing attacks
Rule name:WIN_Malware_Unknown_ForgeAuto_2ffc3572
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_43faefd2
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_5001c94c
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_74566f98
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_79234c04
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_f1079127
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
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: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.

Comments