MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 89f12db466f60f1cf1c53d5ac9a46ca374a29566d3e1e8d1e8f5f892f6df6c4e. 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 YARA 1 File information Comments
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SHA256 hash: 89f12db466f60f1cf1c53d5ac9a46ca374a29566d3e1e8d1e8f5f892f6df6c4e
SHA3-384 hash: e1590b8ea4740f9750625315590e95afe79898f23a541aad6226bab59c59b7b12715f639903f021e122e4ffccffd6229
SHA1 hash: 33f79cb019ba1523af0562233424206cffbda42c
MD5 hash: bd46c33b79879de954a902fc1f9022d2
humanhash: illinois-washington-cup-london
File name:654446543.JS
Download: download sample
Signature RemcosRAT
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File size:1'574'219 bytes
First seen:2025-05-20 11:44:27 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 768:a/YLCQQEhgXOXOdEXf57D3alcCMB4VZJ0vxWHZ/Fwbm+SW5KhSlaaXhXmQZy1n:AsBPw3zQdQn
Threatray 1'016 similar samples on MalwareBazaar
TLSH T1727512D83584D442F38D8B5A356FE8506503FAA636DE88B55A53EAF0FF084B2CC4961F
Magika javascript
Reporter abuse_ch
Tags:js RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
478
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.PUA.JS.Obfus-2525.UNOFFICIAL
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SecuriteInfo.com.PUA.JS.Obfus-2179.UNOFFICIAL
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Sanesecurity.Malware.31320.UNOFFICIAL
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Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=682c6b592f280a98fb423668
Tags:
obfuscate xtreme shell
Verdict:
Malicious
Labled as:
BZC.UGZ.Boxter.1
Link:
https://www.hybrid-analysis.com/sample/89f12db466f60f1cf1c53d5ac9a46ca374a29566d3e1e8d1e8f5f892f6df6c4e
Result
Verdict:
MALICIOUS
Details
Base64 Encoded Powershell Directives
Detected one or more base64 encoded Powershell directives.
Base64 Encoded URL
Detected an ANSI or UNICODE http:// or https:// base64 encoded URL prefix.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1694891
Signature
Antivirus detection for dropped file
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
Detected Remcos RAT
Found hidden mapped module (file has been removed from disk)
Found malware configuration
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)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
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
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1694891 Sample: 654446543.JS.js Startdate: 20/05/2025 Architecture: WINDOWS Score: 100 38 webmail.aruba.it 2->38 40 star-azurefd-prod.trafficmanager.net 2->40 42 8 other IPs or domains 2->42 56 Suricata IDS alerts for network traffic 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 15 other signatures 2->62 9 wscript.exe 1 1 2->9         started        signatures3 process4 signatures5 72 JScript performs obfuscated calls to suspicious functions 9->72 74 Suspicious powershell command line found 9->74 76 Wscript starts Powershell (via cmd or directly) 9->76 78 2 other signatures 9->78 12 powershell.exe 14 15 9->12         started        process6 dnsIp7 44 huadongrubbercable.com 198.54.114.164, 443, 49694 NAMECHEAP-NETUS United States 12->44 46 webmail.aruba.it 62.149.158.90, 443, 49689 ARUBA-ASNIT Italy 12->46 80 Writes to foreign memory regions 12->80 82 Injects a PE file into a foreign processes 12->82 16 MSBuild.exe 4 3 12->16         started        21 conhost.exe 12->21         started        signatures8 process9 dnsIp10 36 196.251.115.153, 3431, 49700, 49701 xneeloZA Seychelles 16->36 30 C:\Users\user\AppData\Local\Temp\TH6D27.tmp, MS-DOS 16->30 dropped 32 C:\Users\user\AppData\Local\Temp\TH6D07.tmp, MS-DOS 16->32 dropped 34 C:\Users\user\AppData\Local\Temp\TH6CE6.tmp, PE32 16->34 dropped 48 Contains functionality to bypass UAC (CMSTPLUA) 16->48 50 Detected Remcos RAT 16->50 52 Contains functionalty to change the wallpaper 16->52 54 5 other signatures 16->54 23 svchost.exe 1 16->23         started        26 svchost.exe 2 16->26         started        28 svchost.exe 1 16->28         started        file11 signatures12 process13 signatures14 64 Tries to steal Instant Messenger accounts or passwords 23->64 66 Tries to steal Mail credentials (via file / registry access) 23->66 68 Tries to steal Mail credentials (via file registry) 26->68 70 Tries to harvest and steal browser information (history, passwords, etc) 26->70
Score:
97%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/89f12db466f60f1cf1c53d5ac9a46ca374a29566d3e1e8d1e8f5f892f6df6c4e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/89f12db466f60f1cf1c53d5ac9a46ca374a29566d3e1e8d1e8f5f892f6df6c4e/
Threat name:
Script-JS.Trojan.Boxter
Create hunting rule
Status:
Malicious
First seen:
2025-05-20 10:03:08 UTC
File Type:
Text (JavaScript)
AV detection:
8 of 23 (34.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rhys3ndg6yhrz4ofhvnmtjdmun2kfflg2pq6rupi6x4jf5w7nrha._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
082d87b0c9b2e71a9351a780f1b7ace0ae603908e23390de3771eb9faa4f7c51
RemcosRAT
2fe03d6416056b84fd119eb8e950a0c23c59486981377435b0a3125f9e843fc0
RemcosRAT
3028c9f1559bf8f293b3ab3bfe8289266d808675540f0111e20b8663e7e65501
RemcosRAT
46bd635e26e21146d449e2032e7771614808a77c315c5d9478067ed9d6d6af2a
RemcosRAT
4bb1c774d92416f89b1efabbe3e96ce92343942c399b41945c0d5f5fcd0a2f64
RemcosRAT
7431c1aba1c01818fdeb98be54f3899329e3b72f6c384cf3c5a01ac12108dc84
RemcosRAT
c3dce4b11c28823d58ca1c10425bef7cba0c19ed7c5c02546c86b77b870f6730
RemcosRAT
cb859f68816f0ced3b81286af4c046aee24df83455e5bccef39d6d1f818cf95f
RemcosRAT
cd2f1cd0142f8cbd14683a4d98b57e94f2f9a6789aaee859960b2cb5ec3a7da2
RemcosRAT
cda178767af65f18a4cca8c662edf67f46a7acb018479cb5dc378194a3300148
RemcosRAT
error
RemcosRAT
+ 1'006 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection discovery execution rat
Link:
https://tria.ge/reports/250520-nwx55aym12/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
196.251.115.153:3431
Dropper Extraction:
https://webmail.aruba.it/smart/cgi-bin/ajaxfile?ACT_FIL_DL=1&PUBLICUID=@1.VFMxM0RLUmlpak5VUCt4RkdEU3luR3VzRmxneHAzUStkTzBJZythWmhBYUx6djNYVzBsV1NFYVlDNmp5b3NwMA==
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/89f12db466f60f1cf1c53d5ac9a46ca374a29566d3e1e8d1e8f5f892f6df6c4e

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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