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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 813a102fd425e448d707a1a62256e10b3d701dcaa60736a99af5e9fc93f8828c. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 813a102fd425e448d707a1a62256e10b3d701dcaa60736a99af5e9fc93f8828c
SHA3-384 hash: 9463cbe0f5e6485ef1076062fc2c6e9113fb5b09b35e5f25d05bcd28b3c681a7afa117ad31598a577227553e32fb1e1f
SHA1 hash: ad82e0fb93412321ec1edd017883201ee8752f6d
MD5 hash: 01b0c3c439884b8d44f698f9598d84cd
humanhash: tango-floor-one-carbon
File name:INV 742421747.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:2'183'870 bytes
First seen:2026-08-19 06:45:13 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 192:MBdYyL4E+FLYAYnt4EAYnAYAfnnLLAYahTYAYL9YLLeEyYnRoL7JqvNbHvqEv7PR:KiNqiUa8A6PoWFKWV
TLSH T1F7A563B58F59F844EC3C20B34997C51CA6159A2DF31D68BA262CAD1A87CEC04CD41BFB
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika vba
Reporter threatcat_ch
Tags:js RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
189
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ac5d205c9e7eb94aa78b95e
Tags:
obfuscate autorun xtreme shell
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
repaired
Link:
https://www.filescan.io/uploads/6a85510eee77566941103419/reports/bc1cfebd-5e67-47c0-9bbb-ef0dc12f760b/overview
Verdict:
Suspicious
Labled as:
JS/Agent.EFE
Link:
https://www.hybrid-analysis.com/sample/813a102fd425e448d707a1a62256e10b3d701dcaa60736a99af5e9fc93f8828c
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1960190
Signature
.NET source code references suspicious native API functions
Attempt to bypass Chrome Application-Bound Encryption
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject threads in other processes
Contains functionality to steal Internet Explorer form passwords
Creates processes via WMI
Detected large data written to user environment variables, potentially indicating payload staging for fileless execution
Detected Remcos RAT
Drops script or batch files to the startup folder
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Found stalling execution ending in API Sleep call
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Drops script at startup location
Sigma detected: Potential Data Stealing Via Chromium Headless Debugging
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Remcos
Sigma detected: Suspicious Environment Variable Has Been Registered
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 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)
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 Powershell decode and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1960190 Sample: INV 742421747.js Startdate: 19/08/2026 Architecture: WINDOWS Score: 100 50 resc.cloudinary.com.cdn.cloudflare.net 2->50 52 res.cloudinary.com 2->52 54 cloudinary.map.fastly.net 2->54 64 Suricata IDS alerts for network traffic 2->64 66 Found malware configuration 2->66 68 Malicious sample detected (through community Yara rule) 2->68 70 14 other signatures 2->70 9 powershell.exe 14 7 2->9         started        13 wscript.exe 4 3 2->13         started        16 wscript.exe 1 2->16         started        signatures3 process4 dnsIp5 62 cloudinary.map.fastly.net 151.101.65.137, 443, 49708 FASTLY-FastlyIncUS Canada 9->62 86 Writes to foreign memory regions 9->86 88 Modifies the context of a thread in another process (thread injection) 9->88 90 Injects a PE file into a foreign processes 9->90 18 appidtel.exe 5 10 9->18         started        23 conhost.exe 9->23         started        48 C:\Users\user\AppData\...\INV 742421747.js, Unicode 13->48 dropped 92 Suspicious powershell command line found 13->92 94 Wscript starts Powershell (via cmd or directly) 13->94 96 Drops script or batch files to the startup folder 13->96 98 4 other signatures 13->98 25 powershell.exe 16->25         started        file6 signatures7 process8 dnsIp9 56 46.151.182.127, 49709, 49710, 49711 GHOSTYNETWORKSUS France 18->56 58 127.0.0.1 unknown unknown 18->58 40 C:\Users\user\AppData\...\cookies.sqlite-shm, data 18->40 dropped 42 C:\Users\user\AppData\...\Login Data.tmp, SQLite 18->42 dropped 44 C:\Users\user\AppData\...\Login Data.tmp, SQLite 18->44 dropped 46 2 other files (1 malicious) 18->46 dropped 72 Contains functionality to bypass UAC (CMSTPLUA) 18->72 74 Detected Remcos RAT 18->74 76 Attempt to bypass Chrome Application-Bound Encryption 18->76 84 10 other signatures 18->84 27 msedge.exe 7 18->27         started        29 chrome.exe 1 18->29         started        60 resc.cloudinary.com.cdn.cloudflare.net 104.16.79.6, 443, 49716 CLOUDFLARENET-CloudflareIncUS Canada 25->60 78 Writes to foreign memory regions 25->78 80 Modifies the context of a thread in another process (thread injection) 25->80 82 Injects a PE file into a foreign processes 25->82 31 appidtel.exe 25->31         started        34 conhost.exe 25->34         started        file10 signatures11 process12 signatures13 36 msedge.exe 27->36         started        38 conhost.exe 29->38         started        100 Detected Remcos RAT 31->100 process14
Score:
35%
Verdict:
Susipicious
File Type:
SCRIPT
Link:
https://malprob.io/report/813a102fd425e448d707a1a62256e10b3d701dcaa60736a99af5e9fc93f8828c
Verdict:
Malware
YARA:
1 match(es)
Tags:
DeObfuscated PowerShell T1027 T1059.001
Link:
https://app.malva.re/file/01b0c3c439884b8d44f698f9598d84cd
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/813a102fd425e448d707a1a62256e10b3d701dcaa60736a99af5e9fc93f8828c/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-08-19 06:45:44 UTC
File Type:
Binary
AV detection:
8 of 24 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qe5bal6uexservyhugtcevxbbm6xahokuydtnkm26xu7ze7yqkga._file
Verdict:
malicious
Label(s):
Remcos
Create hunting rule
Link:
https://reports.threatray.com/1df0b8b5-1909-483d-b486-1be8a76f3574
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remote collection credential_access defense_evasion discovery execution persistence privilege_escalation rat stealer trojan
Link:
https://tria.ge/reports/260819-hjcqrsz1fs/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
outlook_office_path
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Time Discovery
Drops file in System32 directory
Executes a VBScript file via the Windows Script Host.
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Creates a file in the Startup directory
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Uses browser remote debugging
Family: Remcos
Process spawned unexpected child process
UAC bypass
Malware Config
C2 Extraction:
46.151.182.127:8080
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.51
Link:
https://yomi.yoroi.company/submissions/813a102fd425e448d707a1a62256e10b3d701dcaa60736a99af5e9fc93f8828c

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: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)

File information

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

Malspam

RemcosRAT

Java Script (JS) js 813a102fd425e448d707a1a62256e10b3d701dcaa60736a99af5e9fc93f8828c

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments