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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 efcca24e16aa3f38494afddfd5372d098dc9eaac07778fbd7e8e5deb09a155a4. 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: 10


Intelligence 10 IOCs 1 YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: efcca24e16aa3f38494afddfd5372d098dc9eaac07778fbd7e8e5deb09a155a4
SHA3-384 hash: 62833735e225f4794fd8aef72f2f4b9ca72b8342af69beccace61f1f1cc5ec0a212cd1eca1eb7819aec5c37de6442886
SHA1 hash: d7d3ebe4471ef9abd851b6cea273e0f0d903210c
MD5 hash: bac2291f98a691f66ff13a70afd932b0
humanhash: lactose-uniform-equal-carbon
File name:dTSlkj83JJD.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:60'767 bytes
First seen:2026-10-12 18:26:45 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 1536:QU8irPZeiAyOV94Er5e5rtXy1OkF78U4KvbTvc:Q/J8U4KvbTvc
TLSH T15C53D943A2134259CE02D19E8219E23F89FBC71B543CDC9D770A99DEEB6F8D4612B721
Magika javascript
Reporter abuse_ch
Tags:js RAT RemcosRAT

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
192.159.99.168:2404 https://threatfox.abuse.ch/ioc/1962655/

Intelligence

File Origin
# of uploads :
1
# of downloads :
193
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Win32.SuspectCrc.27589.16064.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ad1035ef4e17c78f715d9d3
Tags:
virus shell sage
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm encrypted fingerprint obfuscated repaired
Link:
https://www.filescan.io/uploads/6acd26980a73ef807545b98a/reports/271483f1-f421-4fdf-99c4-c9b99910d34c/overview
Verdict:
Suspicious
Labled as:
JS/Agent.FDR
Link:
https://www.hybrid-analysis.com/sample/efcca24e16aa3f38494afddfd5372d098dc9eaac07778fbd7e8e5deb09a155a4
Verdict:
Malicious
File Type:
js
First seen:
2026-10-12T05:32:00Z UTC
Last seen:
2026-10-14T09:37:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/efcca24e16aa3f38494afddfd5372d098dc9eaac07778fbd7e8e5deb09a155a4/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/1986133
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Creates processes via WMI
Detected large data written to user environment variables, potentially indicating payload staging for fileless execution
Detected Remcos RAT
Found malware configuration
Found stalling execution ending in API Sleep call
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
JScript performs obfuscated calls to suspicious functions
Malicious sample detected (through community Yara rule)
Modifies the context of a thread in another process (thread injection)
Obfuscated command line found
Powershell connects to network
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
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 Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1986133 Sample: dTSlkj83JJD.js Startdate: 12/10/2026 Architecture: WINDOWS Score: 100 54 www.phongketaonduchuylogistics2.com 2->54 56 www.phongketaonduchuylogistics1.com 2->56 58 6 other IPs or domains 2->58 72 Suricata IDS alerts for network traffic 2->72 74 Found malware configuration 2->74 76 Malicious sample detected (through community Yara rule) 2->76 78 10 other signatures 2->78 11 wscript.exe 2 2->11         started        14 svchost.exe 1 1 2->14         started        signatures3 process4 dnsIp5 88 JScript performs obfuscated calls to suspicious functions 11->88 90 Wscript starts Powershell (via cmd or directly) 11->90 92 Obfuscated command line found 11->92 94 4 other signatures 11->94 17 cmd.exe 1 11->17         started        68 127.0.0.1 unknown unknown 14->68 signatures6 process7 signatures8 70 Wscript starts Powershell (via cmd or directly) 17->70 20 powershell.exe 14 25 17->20         started        25 conhost.exe 17->25         started        process9 dnsIp10 60 64.224.17.115, 49705, 80 VIRTUO-12651980CANADAINCCA United States 20->60 62 217.60.76.249, 49708, 8080 MICROLINK-CORE-MicrolinkNetworkUS Netherlands 20->62 64 2 other IPs or domains 20->64 50 C:\Users\user\AppData\...\qbpbmizs.cmdline, Unicode 20->50 dropped 80 Suspicious powershell command line found 20->80 82 Writes to foreign memory regions 20->82 84 Modifies the context of a thread in another process (thread injection) 20->84 86 2 other signatures 20->86 27 MSBuild.exe 4 20->27         started        31 csc.exe 3 20->31         started        34 powershell.exe 10 20->34         started        file11 signatures12 process13 dnsIp14 66 192.159.99.168 028f45e8dd4f225cb46a7d8003745a3a7f55d3a0DE United States 27->66 96 Contains functionality to bypass UAC (CMSTPLUA) 27->96 98 Detected Remcos RAT 27->98 100 Found stalling execution ending in API Sleep call 27->100 102 Unusual module load detection (module proxying) 27->102 52 C:\Users\user\AppData\Local\...\qbpbmizs.dll, PE32 31->52 dropped 36 cvtres.exe 1 31->36         started        38 cmd.exe 1 34->38         started        40 conhost.exe 34->40         started        file15 signatures16 process17 process18 42 taskkill.exe 1 38->42         started        44 taskkill.exe 1 38->44         started        46 taskkill.exe 1 38->46         started        48 conhost.exe 38->48         started       
Score:
84%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/efcca24e16aa3f38494afddfd5372d098dc9eaac07778fbd7e8e5deb09a155a4
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/efcca24e16aa3f38494afddfd5372d098dc9eaac07778fbd7e8e5deb09a155a4/
Threat name:
Script.Trojan.Multiverze
Create hunting rule
Status:
Malicious
First seen:
2026-10-12 08:25:35 UTC
File Type:
Text (JavaScript)
AV detection:
9 of 23 (39.13%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=57gketqwvi7tqskk7xp5knznbgg4t2vma53y7pl6rzo6wcnbkwsa._file
Verdict:
malicious
Label(s):
Remcos
Create hunting rule
Link:
https://reports.threatray.com/472d9eea-f2f5-4710-a909-204c00df6746
Result
Malware family:
n/a
Score:
  10/10
Tags:
defense_evasion discovery execution
Link:
https://tria.ge/reports/261012-w7t7lsvz9l/
Behaviour
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Executes a command shell one-liner
Reads the TCP/IP host and domain name from the registry
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Process spawned unexpected child process
Please note that we are no longer able to provide a coverage score for Virus Total.

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:OBFUS_PowerShell_Common_Replace
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Author:SECUINFRA Falcon Team
Description:Detects the common usage of replace for obfuscation
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