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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b427e3fdb41eaa0c0a750aa533013279bb5d5977c0ab89fb998f4a0c8b0b3529. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b427e3fdb41eaa0c0a750aa533013279bb5d5977c0ab89fb998f4a0c8b0b3529
SHA3-384 hash: b288f73d844e8d61ca221a8b3e2effd7c0d73d6c05d1d46e53ac12a4bea1058127c1011be16c68e65c1062e3ef9cae33
SHA1 hash: 9c3e4ca2b8f7d8a96f1e823e4e2b2db7f6291708
MD5 hash: 2d49039e5273c4763829eea3635e693f
humanhash: maine-oven-speaker-social
File name:scan_docs.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'505'141 bytes
First seen:2026-09-15 12:54:57 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 1536:9EeQwC4EuduxOVEQM4atndPfY8lbSc8uEtv6dY4kX/LGTrkovKocz/Ut3Xpx+I81:9EeGgsTUPnqhheD0wfmViO8
TLSH T1C265469203851BBDF68D0EC9C94B205B21F2D46B7D255298EBB36EE7BC3BD845430636
Magika javascript
Reporter abuse_ch
Tags:js RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
163
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.JS.Trojan.Cryxos.16738.96819467.UNOFFICIAL
Create hunting rule

Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated repaired
Link:
https://www.filescan.io/uploads/6aa9404cc3b05bb2003fc0ec/reports/687f74be-6927-4abf-88d4-f58b2da853d6/overview
Verdict:
Malicious
Labled as:
Trojan.Cryxos.JS
Link:
https://www.hybrid-analysis.com/sample/b427e3fdb41eaa0c0a750aa533013279bb5d5977c0ab89fb998f4a0c8b0b3529
Verdict:
Malicious
File Type:
js
First seen:
2026-09-15T03:17:00Z UTC
Last seen:
2026-09-17T09:05:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/b427e3fdb41eaa0c0a750aa533013279bb5d5977c0ab89fb998f4a0c8b0b3529/results?tab=lookup
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1973170
Signature
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to register a low level keyboard hook
Contains functionalty to change the wallpaper
Creates processes via WMI
Detected Remcos RAT
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
JavaScript source code contains functionality to generate code involving a shell, file or stream
JScript performs obfuscated calls to suspicious functions
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Remcos
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Sigma detected: WScript or CScript Dropper - File
Suspicious execution chain found
Suspicious powershell command line found
Unusual module load detection (module proxying)
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript called in batch mode (surpress errors)
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1973170 Sample: scan_docs.js Startdate: 15/09/2026 Architecture: WINDOWS Score: 100 48 www.google.com 2->48 50 pki-goog.l.google.com 2->50 52 9 other IPs or domains 2->52 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 Antivirus detection for dropped file 2->64 66 13 other signatures 2->66 9 wscript.exe 2 5 2->9         started        13 wscript.exe 2->13         started        signatures3 process4 file5 42 C:\Users\user\AppData\Local\...\3273871.xml, XML 9->42 dropped 44 C:\Users\user\AppData\...\PhotoStudio.js, ASCII 9->44 dropped 78 JScript performs obfuscated calls to suspicious functions 9->78 80 Suspicious powershell command line found 9->80 82 Wscript starts Powershell (via cmd or directly) 9->82 84 5 other signatures 9->84 15 powershell.exe 24 9->15         started        19 schtasks.exe 1 9->19         started        signatures6 process7 file8 46 C:\Users\user\AppData\...\ludtagix.cmdline, Unicode 15->46 dropped 56 Writes to foreign memory regions 15->56 58 Injects a PE file into a foreign processes 15->58 21 MSBuild.exe 7 4 15->21         started        26 conhost.exe 15->26         started        28 csc.exe 3 15->28         started        30 conhost.exe 19->30         started        signatures9 process10 dnsIp11 54 192.255.195.140, 2404, 49740, 49741 HOSTWINDS-HostwindsLLCUS United States 21->54 36 C:\Users\user\AppData\Local\Temp\yibcz.vbs, data 21->36 dropped 38 C:\ProgramData\aroma\logs.dat, data 21->38 dropped 68 Contains functionality to bypass UAC (CMSTPLUA) 21->68 70 Detected Remcos RAT 21->70 72 Contains functionalty to change the wallpaper 21->72 76 2 other signatures 21->76 32 wscript.exe 21->32         started        40 C:\Users\user\AppData\Local\...\ludtagix.dll, PE32 28->40 dropped 34 cvtres.exe 1 28->34         started        74 Installs a global keyboard hook 30->74 file12 signatures13 process14
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/b427e3fdb41eaa0c0a750aa533013279bb5d5977c0ab89fb998f4a0c8b0b3529
Gathering data
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b427e3fdb41eaa0c0a750aa533013279bb5d5977c0ab89fb998f4a0c8b0b3529/
Threat name:
Script-JS.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2026-09-15 06:28:32 UTC
File Type:
Text (JavaScript)
AV detection:
7 of 24 (29.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wqt6h7nud2vayctvbkstgajspg5v2wlxycvyt64zr5fazcylguuq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:aroma_path defense_evasion discovery execution persistence rat trojan
Link:
https://tria.ge/reports/260915-p55f8shl8s/
Behaviour
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Command and Scripting Interpreter: PowerShell
Checks computer location settings
Family: Remcos
Process spawned unexpected child process
UAC bypass
Malware Config
C2 Extraction:
192.255.195.140:2404
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/b427e3fdb41eaa0c0a750aa533013279bb5d5977c0ab89fb998f4a0c8b0b3529

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:ClamAV_Emotet_String_Aggregate
Create hunting rule
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