MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8357d5620f2991fa16ae60944e9080a064fa2eed089839b754f8ac7dff0c8bd9. 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: 8357d5620f2991fa16ae60944e9080a064fa2eed089839b754f8ac7dff0c8bd9
SHA3-384 hash: c4185c7ac42198eb199b19c3fa207af646c2b2b2c3fd4c2991449cf701942aacdc8f78b5f498efb9a7930f4ee4a2d85e
SHA1 hash: 7d773a1e8933267ca324918c4d4517280e378c59
MD5 hash: 4fc1099d4df778ae584ebc5eb2e95849
humanhash: cup-potato-fifteen-tennis
File name:Upit za transport Kopar _ Prijedor BiH.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:613'056 bytes
First seen:2026-04-17 13:59:55 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 48:CrmX/vLQlrdSsdync0lWcdNDN445eunuqG+oElCKd3uwn+3d1BncLBKU6DDNgV3f:CoKBphRPQP7GPt7KXi8
Threatray 2'262 similar samples on MalwareBazaar
TLSH T114D4790745C114288D4A86D8EB8A8489972FD2B35F6CCF5935F373A32B906FEBA74C54
Magika javascript
Reporter abuse_ch
Tags:js RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
121
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.32532.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69e23d7ef68adfe1003ac404
Tags:
shell virus sage
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
evasive repaired
Link:
https://www.filescan.io/uploads/69e23d69d920e1904400427a/reports/ae921b46-91ce-4601-94cf-076ffee0a06f/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/8357d5620f2991fa16ae60944e9080a064fa2eed089839b754f8ac7dff0c8bd9
Verdict:
Malicious
File Type:
js
First seen:
2026-04-17T05:13:00Z UTC
Last seen:
2026-04-19T00:41:00Z UTC
Hits:
~100
Detections:
Trojan.VBS.SAgent.sb Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic HEUR:Trojan-Downloader.Script.Generic
Link:
https://opentip.kaspersky.com/8357d5620f2991fa16ae60944e9080a064fa2eed089839b754f8ac7dff0c8bd9/results?tab=lookup
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1900146
Signature
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Creates processes via WMI
Detected large data written to user environment variables, potentially indicating payload staging for fileless execution
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder
Sigma detected: WScript or CScript Dropper
Sigma detected: WScript or CScript Dropper - File
Suspicious execution chain found
Suspicious powershell command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1900146 Sample: Upit za transport Kopar _ P... Startdate: 17/04/2026 Architecture: WINDOWS Score: 100 39 alkon.rs 2->39 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Antivirus detection for URL or domain 2->49 51 11 other signatures 2->51 8 wscript.exe 2 2 2->8         started        12 powershell.exe 14 15 2->12         started        15 wscript.exe 1 2->15         started        17 svchost.exe 1 1 2->17         started        signatures3 process4 dnsIp5 37 C:\Users\Public\Downloads37ame_File.js, Unicode 8->37 dropped 53 Suspicious powershell command line found 8->53 55 Wscript starts Powershell (via cmd or directly) 8->55 57 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->57 63 2 other signatures 8->63 41 alkon.rs 213.227.143.4, 443, 49681, 49687 LEASEWEB-NL-AMS-01NetherlandsNL Netherlands 12->41 59 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 12->59 19 conhost.exe 12->19         started        21 cmd.exe 12->21         started        23 cmd.exe 12->23         started        27 3 other processes 12->27 61 Detected large data written to user environment variables, potentially indicating payload staging for fileless execution 15->61 25 powershell.exe 15->25         started        43 127.0.0.1 unknown unknown 17->43 file6 signatures7 process8 process9 29 conhost.exe 25->29         started        31 cmd.exe 25->31         started        33 cmd.exe 25->33         started        35 3 other processes 25->35
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/8357d5620f2991fa16ae60944e9080a064fa2eed089839b754f8ac7dff0c8bd9
Gathering data
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8357d5620f2991fa16ae60944e9080a064fa2eed089839b754f8ac7dff0c8bd9/
Verdict:
Malicious
Threat:
Family.REVERSELOADER
Link:
https://tip.neiki.dev/file/8357d5620f2991fa16ae60944e9080a064fa2eed089839b754f8ac7dff0c8bd9
Threat name:
Script-JS.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2026-04-17 12:56:42 UTC
File Type:
Text (JavaScript)
AV detection:
10 of 38 (26.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qnl5kyqpfgi7ufvomcke5eeaubspulxnbcmdtn2u7cwh37ymrpmq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
2af86dcc149f8d47bd2873c929d6b9cf03af542e03b4d14e1043fe9bac91e073
RemcosRAT
2b0f5546b026f1b961571048572b0b9ec5adb52442746c96e9bf787a2bb7ec5d
RemcosRAT
2ca8575a0980f59b14a4584040ecc7e782c39f03bc0aab98a2dbff47d3248ec7
RemcosRAT
a9fff657717fc3bcfb1033ee50bc3d13e2dda381e90440f01b2f15b988ec0613
RemcosRAT
error
RemcosRAT
fdd5178424df3b5abdfdee000b8fb4f8d0d376d92e875a29c3aaae4a8c82d0bc
RemcosRAT
+ 2'252 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:newluma discovery execution persistence rat spyware stealer
Link:
https://tria.ge/reports/260417-rbzp1abs6z/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Command and Scripting Interpreter: JavaScript
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks installed software on the system
Reads user/profile data of web browsers
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Family: Remcos
Process spawned unexpected child process
Malware Config
C2 Extraction:
luuuma.duckdns.org:56588
luuumabk.duckdns.org:56640
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/8357d5620f2991fa16ae60944e9080a064fa2eed089839b754f8ac7dff0c8bd9

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.

Comments