MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f000c483ebcf213dac9968099f6f8c866a63e81e1955ba3664a58592ddac6477. 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: f000c483ebcf213dac9968099f6f8c866a63e81e1955ba3664a58592ddac6477
SHA3-384 hash: 5a1e965202e76633550e4a1a81bfa6bfa816ff92f0beda8500dc212770ba7962b33643544e53c0b7c7c2a01534f69ac3
SHA1 hash: 8804472ff36ae666b11e65d8e18765d893f86306
MD5 hash: 24f29cfbdb13458b1da730f93433481d
humanhash: mobile-pennsylvania-enemy-purple
File name:f000c483ebcf213dac9968099f6f8c866a63e81e1955ba3664a58592ddac6477.js
Download: download sample
Signature RemcosRAT
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File size:6'108'987 bytes
First seen:2025-05-27 06:39:51 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 768:i88f7ui9HnKIPXD+gB46+Tw4ihPY3fWRoDIZeeYwZhFONP5HoxuQadYt5NNDJN9Y:i88EO7Mx4YnwPQGyGP88E
Threatray 25 similar samples on MalwareBazaar
TLSH T14356DE40FE076AC4C7175E7D2E207FAD1CE5E1B6A3E77B1C36217C926628848E1E2D25
Magika javascript
Reporter JAMESWT_WT
Tags:js RemcosRAT webmail-aruba-it--ajaxfile

Intelligence

File Origin
# of uploads :
1
# of downloads :
415
Origin country :
IT IT
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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Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6835603d668438e362e756af
Tags:
obfuscate xtreme shell
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
base64 obfuscated
Link:
https://www.filescan.io/uploads/68355e65fd02ed5e05898f2f/reports/3fb6d073-321e-4e72-ba87-45975820cef7/overview
Verdict:
Suspicious
Labled as:
SVM:TrojanDownloader/JS.Nemucod
Link:
https://www.hybrid-analysis.com/sample/f000c483ebcf213dac9968099f6f8c866a63e81e1955ba3664a58592ddac6477
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/1699581
Signature
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
Creates autostart registry keys with suspicious names
Detected Remcos RAT
Found malware configuration
Injects a PE file into a foreign processes
JavaScript source code contains functionality to generate code involving a shell, file or stream
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
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: 1699581 Sample: TFFtv3o2TO.js Startdate: 27/05/2025 Architecture: WINDOWS Score: 100 45 webmailssl.it 2->45 47 webmail.aruba.it 2->47 49 2 other IPs or domains 2->49 55 Suricata IDS alerts for network traffic 2->55 57 Found malware configuration 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 10 other signatures 2->61 10 wscript.exe 1 1 2->10         started        13 msbuild.exe 1 2->13         started        15 msbuild.exe 1 2->15         started        signatures3 process4 signatures5 75 Suspicious powershell command line found 10->75 77 Wscript starts Powershell (via cmd or directly) 10->77 79 Windows Scripting host queries suspicious COM object (likely to drop second stage) 10->79 81 Suspicious execution chain found 10->81 17 powershell.exe 14 16 10->17         started        21 conhost.exe 13->21         started        23 conhost.exe 15->23         started        process6 dnsIp7 41 webmailssl.it 62.149.157.247, 443, 49692 ARUBA-ASNIT Italy 17->41 43 webmail.aruba.it 62.149.158.90, 443, 49691 ARUBA-ASNIT Italy 17->43 51 Writes to foreign memory regions 17->51 53 Injects a PE file into a foreign processes 17->53 25 MSBuild.exe 17->25         started        28 MSBuild.exe 2 4 17->28         started        31 conhost.exe 17->31         started        33 MSBuild.exe 17->33         started        signatures8 process9 file10 63 Contains functionality to bypass UAC (CMSTPLUA) 25->63 65 Contains functionalty to change the wallpaper 25->65 67 Contains functionality to steal Chrome passwords or cookies 25->67 73 2 other signatures 25->73 39 C:\Users\user\AppData\Roaming\...\msbuild.exe, PE32 28->39 dropped 69 Detected Remcos RAT 28->69 71 Creates autostart registry keys with suspicious names 28->71 35 msbuild.exe 2 28->35         started        signatures11 process12 process13 37 conhost.exe 35->37         started       
Score:
64%
Verdict:
Susipicious
File Type:
SCRIPT
Link:
https://malprob.io/report/f000c483ebcf213dac9968099f6f8c866a63e81e1955ba3664a58592ddac6477
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f000c483ebcf213dac9968099f6f8c866a63e81e1955ba3664a58592ddac6477/
Threat name:
Script-JS.Trojan.Heuristic
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Status:
Malicious
First seen:
2025-05-26 09:12:10 UTC
File Type:
Text (JavaScript)
AV detection:
7 of 24 (29.17%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6aamja7lz4qt3leznaez634mqzvgh2a6dfk3unteuwczfxnmmr3q._file
Verdict:
malicious
Label(s):
remcos
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Similar samples:
1954852d49e10ab60251b4d441456bde537c7f349297c2c9c972aaf6cd9f5065
RemcosRAT
23f9fe7816885cdc1fa4082870eb0eb6804df4dc15cafb0cb4c301bc7bebe5ea
RemcosRAT
6e7b45cff195d3b5234ecb0d64022233bb382524960fee75316ffeb3c87ad102
RemcosRAT
8f008745afdae7a3936038812a754d85b29c10f394f37a2e123c790d66359c53
RemcosRAT
9568e856bd7e2469908c9ee8dfc816f94662dd9643e34c6ec6d3153656e82247
RemcosRAT
a99dcf9a006a8bba7ff7a934fdd7d1d4232ee5ead022dcdc36a2bb9f8e3242d6
RemcosRAT
b821af160140458283dfcfa9c43ecfb97def0d2ada7844877fcfca75c033294a
RemcosRAT
cc8c9f5b7a3a6d049cdb9a484fb0f39b0cf8d7f73dfc78b495c9580a93363f64
RemcosRAT
error
RemcosRAT
f2b4df24dff10c2c28917bea92e9fb7c752f26e0ed60bb5753584b7dff328162
RemcosRAT
+ 15 additional samples on MalwareBazaar
Result
Malware family:
remcos
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Score:
  10/10
Tags:
family:remcos botnet:mayday warzone discovery execution persistence rat
Link:
https://tria.ge/reports/250527-hfhgvazrt4/
Behaviour
Modifies registry class
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
Drops file in System32 directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Remcos
Remcos family
Malware Config
C2 Extraction:
privatedns.buildmedic.com:3116
privatedns.uhdengine.com:6148
Dropper Extraction:
https://webmail.aruba.it/smart/cgi-bin/ajaxfile?ACT_FIL_DL=1&PUBLICUID=@1.VFMxM0RLUmlpak5VUCt4RkdEU3luR3VzRmxneHAzUStkTzBJZythWmhBYXR2Rng3R2dCNVl5V3djYTBnV0luVA==
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/f000c483ebcf213dac9968099f6f8c866a63e81e1955ba3664a58592ddac6477

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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