MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3f6657c2cc7f25df3037f269cce07616446231f034c45b06209c9bd4c40107e. 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 YARA 1 File information Comments
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SHA256 hash: b3f6657c2cc7f25df3037f269cce07616446231f034c45b06209c9bd4c40107e
SHA3-384 hash: b588ccc248fad6dd3003ad35512cd0601e68be3367bc33e95a620ebc067732bfd28dfd371ff79e403b977e24dc1b729d
SHA1 hash: 0634b3859630a813bd863dd3b061d49e83e30306
MD5 hash: 3d28123099f0de60ac22cb19c70bc6a5
humanhash: blue-nitrogen-one-louisiana
File name:ORC4325634.JS
Download: download sample
Signature RemcosRAT
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File size:17'003'424 bytes
First seen:2025-05-07 09:25:43 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 768:Zsy3M5GTjIHisy3M5GTjIHJsy3M5GTjIHisy3M5GTjIHJsy3M5GTjIHisy3M5GTZ:b
Threatray 881 similar samples on MalwareBazaar
TLSH T13A075AAA23070C31FED3225C9DBC1DAA58E91EC57AF3375CEB7D1080AE48626D593176
Magika javascript
Reporter abuse_ch
Tags:js RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
417
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Other.Malware-gen.17427.2721.UNOFFICIAL
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Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=681b27b691991ead82b5bd89
Tags:
obfuscate xtreme shell
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/681b2739c7418694c8a6b312/reports/2aae029d-a4d2-46b1-8066-646657bd064e/overview
Verdict:
Malicious
Labled as:
Trojan.Cryxos.JS
Link:
https://www.hybrid-analysis.com/sample/b3f6657c2cc7f25df3037f269cce07616446231f034c45b06209c9bd4c40107e
Result
Threat name:
Remcos
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Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1683058
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Silenttrinity Stager Msbuild Activity
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
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 Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1683058 Sample: ORC4325634.JS.js Startdate: 07/05/2025 Architecture: WINDOWS Score: 100 26 www.ees-ro.com 2->26 28 huadongrubbercable.com 2->28 30 5 other IPs or domains 2->30 40 Suricata IDS alerts for network traffic 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 12 other signatures 2->46 8 wscript.exe 1 1 2->8         started        signatures3 process4 signatures5 48 Suspicious powershell command line found 8->48 50 Wscript starts Powershell (via cmd or directly) 8->50 52 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->52 54 Suspicious execution chain found 8->54 11 powershell.exe 14 15 8->11         started        process6 dnsIp7 36 huadongrubbercable.com 198.54.114.164, 443, 49690 NAMECHEAP-NETUS United States 11->36 38 stonecradle.com 41.185.8.68, 443, 49687 GridhostZA South Africa 11->38 56 Writes to foreign memory regions 11->56 58 Injects a PE file into a foreign processes 11->58 15 MSBuild.exe 11->15         started        18 MSBuild.exe 4 15 11->18         started        22 conhost.exe 11->22         started        signatures8 process9 dnsIp10 60 Contains functionality to bypass UAC (CMSTPLUA) 15->60 62 Contains functionalty to change the wallpaper 15->62 64 Contains functionality to steal Chrome passwords or cookies 15->64 68 2 other signatures 15->68 32 www.ees-ro.com 196.251.115.153, 3421, 49692 xneeloZA Seychelles 18->32 34 geoplugin.net 178.237.33.50, 49693, 80 ATOM86-ASATOM86NL Netherlands 18->34 24 C:\ProgramData\dhege\logs.dat, data 18->24 dropped 66 Installs a global keyboard hook 18->66 file11 signatures12
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/b3f6657c2cc7f25df3037f269cce07616446231f034c45b06209c9bd4c40107e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3f6657c2cc7f25df3037f269cce07616446231f034c45b06209c9bd4c40107e/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wp3gk7bmy7zf34ydp4tjztqhmfsemiy7angelmdcbhe32tcacb7a._file
Verdict:
malicious
Label(s):
remcos
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Similar samples:
1b2d6ba0dfcb2247cc3655f37844dbd378abd68364b454dad49288bcf977a88e
RemcosRAT
3e65d73d24d876e7597dbda0fbcef9681dd7e16d241283ebf466eb0ad85c603b
RemcosRAT
5aa13f12284f388e4d78c6018ae782aa71da17c8cc737eb31dc3ee70c3caa2f5
RemcosRAT
88cdc8636f78b3594000a95f10e3a9ee30944ff723f24d6695dd1615ee2bbb21
RemcosRAT
a091e95f8ef5a159d715f1f954bd84f9557b74ef94b2e2aaaef82907c159f1c0
RemcosRAT
c01051d14750b4b34182c88fdcf4591233efa2215702375f4684a86b8843075e
RemcosRAT
c8516f59d8b33651894d39c8770dd8960138b6e440beb236927d528df139334e
RemcosRAT
d36ed137f9ad6964486285f443f21a27510c8b15f40ef2c47911b5a47b8bc083
RemcosRAT
d4b5f80983a954f27ebecfdf87f26582b36b64c57f02ede40c74145d880a69f0
RemcosRAT
error
RemcosRAT
+ 871 additional samples on MalwareBazaar
Result
Malware family:
remcos
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Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery execution rat
Link:
https://tria.ge/reports/250507-lebjpazshv/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Remcos
Remcos family
Malware Config
C2 Extraction:
www.ees-ro.com:3421
www.assanalumlnyum.com:3421
www.sermansilian.com:3421
Dropper Extraction:
https://stonecradle.com/wp/wex.gif
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/b3f6657c2cc7f25df3037f269cce07616446231f034c45b06209c9bd4c40107e

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:Base64_Encoded_Powershell_Directives
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File information

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

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