MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dcce4fcb1527dade75d9e78cd0b1c252166253ebd393c59fe613901df50ef8ec. 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 34 File information Comments
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SHA256 hash: dcce4fcb1527dade75d9e78cd0b1c252166253ebd393c59fe613901df50ef8ec
SHA3-384 hash: 688ba0385cc31b8e0cdc47d6bd624d599e964ccadb9a85e4c2610e469bd74df7b9d65ce564c8db73683fd88e63f0a71a
SHA1 hash: 33e2f0dec00a8b4474ddf1589d6a28757c4f19b5
MD5 hash: adff78bb0713ee35c98741e7f82796d3
humanhash: nuts-early-summer-nebraska
File name:BL357-6843 929111.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:2'115'256 bytes
First seen:2025-07-07 13:11:43 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:jAORxkmmXbBoG5oaOtH3C0iu7Y2kJJlLmGMAybkDS0So0NCUXz/+4TT1svxQSik+:kOj2bBoaOtH3hSQb1XT7M6AwKymQ
TLSH T1F1A5F1705B066C972798AA488C8C3DC10F6C27A3E1655BD4DB78F8F32D39E8159AC8DD
Magika txt
Reporter abuse_ch
Tags:js RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
36
Origin country :
SE SE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=686bc7bac9eb974737676381
Tags:
infosteal autorun delphi emotet
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug base64 dropper fingerprint keylogger obfuscated obfuscated packed packed
Link:
https://www.filescan.io/uploads/686bc7bc0737c4165a923e1c/reports/4e5989c3-6ad1-451a-955a-639b5f2e76aa/overview
Verdict:
Malicious
Labled as:
GT:JS.Cbum.1
Link:
https://www.hybrid-analysis.com/sample/dcce4fcb1527dade75d9e78cd0b1c252166253ebd393c59fe613901df50ef8ec
Result
Threat name:
Remcos, DBatLoader, DarkCloud
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1730080
Signature
Allocates many large memory junks
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to inject code into remote processes
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
Delayed program exit found
Detected Remcos RAT
Drops or copies cmd.exe with a different name (likely to bypass HIPS)
Drops PE files to the user root directory
Drops PE files with a suspicious file extension
Early bird code injection technique detected
Found malware configuration
JavaScript file contains suspicious strings
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: DLL Search Order Hijackig Via Additional Space in Path
Sigma detected: Execution from Suspicious Folder
Sigma detected: Remcos
Sigma detected: Suspicious Creation with Colorcpl
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected DarkCloud
Yara detected DBatLoader
Yara detected Remcos RAT
Yara detected Telegram RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1730080 Sample: BL357-6843 929111.js Startdate: 07/07/2025 Architecture: WINDOWS Score: 100 64 email-server.xyz 2->64 66 s-0005.dual-s-msedge.net 2->66 68 2 other IPs or domains 2->68 82 Suricata IDS alerts for network traffic 2->82 84 Found malware configuration 2->84 86 Malicious sample detected (through community Yara rule) 2->86 90 15 other signatures 2->90 9 wscript.exe 1 2 2->9         started        13 rundll32.exe 3 2->13         started        15 OUTLOOK.EXE 2->15         started        signatures3 88 Performs DNS queries to domains with low reputation 64->88 process4 file5 60 C:\Users\user\AppData\Local\Temp\x.exe, PE32 9->60 dropped 124 Benign windows process drops PE files 9->124 126 JScript performs obfuscated calls to suspicious functions 9->126 128 Windows Scripting host queries suspicious COM object (likely to drop second stage) 9->128 17 x.exe 7 9->17         started        21 Wspbmdsy.PIF 13->21         started        signatures6 process7 file8 56 C:\Users\Public\...\Wspbmdsy.PIF (copy), PE32 17->56 dropped 74 Early bird code injection technique detected 17->74 76 Allocates memory in foreign processes 17->76 78 Allocates many large memory junks 17->78 80 2 other signatures 17->80 23 colorcpl.exe 2 15 17->23         started        28 cmd.exe 1 17->28         started        30 cmd.exe 1 17->30         started        32 cmd.exe 1 17->32         started        34 SndVol.exe 21->34         started        signatures9 process10 dnsIp11 70 email-server.xyz 216.250.253.13, 2990, 49685, 49688 AS-TIERP-19019US United States 23->70 72 geoplugin.net 178.237.33.50, 49687, 80 ATOM86-ASATOM86NL Netherlands 23->72 58 C:\Users\user\AppData\Local\Temp\dwn.exe, PE32 23->58 dropped 110 Detected Remcos RAT 23->110 112 Contains functionalty to change the wallpaper 23->112 114 Contains functionality to steal Chrome passwords or cookies 23->114 122 3 other signatures 23->122 36 dwn.exe 23->36         started        39 colorcpl.exe 23->39         started        41 colorcpl.exe 23->41         started        50 2 other processes 23->50 116 Uses schtasks.exe or at.exe to add and modify task schedules 28->116 43 esentutl.exe 2 28->43         started        46 conhost.exe 28->46         started        52 2 other processes 28->52 54 2 other processes 30->54 48 conhost.exe 32->48         started        118 Contains functionality to steal Firefox passwords or cookies 34->118 120 Delayed program exit found 34->120 file12 signatures13 process14 file15 92 Antivirus detection for dropped file 36->92 94 Multi AV Scanner detection for dropped file 36->94 96 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 36->96 98 Tries to steal Instant Messenger accounts or passwords 39->98 100 Tries to steal Mail credentials (via file / registry access) 39->100 102 Tries to harvest and steal browser information (history, passwords, etc) 41->102 62 C:\Users\Public\alpha.pif, PE32 43->62 dropped 104 Drops PE files to the user root directory 43->104 106 Drops PE files with a suspicious file extension 43->106 108 Drops or copies cmd.exe with a different name (likely to bypass HIPS) 43->108 signatures16
Score:
98%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/dcce4fcb1527dade75d9e78cd0b1c252166253ebd393c59fe613901df50ef8ec
Verdict:
inconclusive
YARA:
1 match(es)
Link:
https://app.malva.re/file/adff78bb0713ee35c98741e7f82796d3
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/dcce4fcb1527dade75d9e78cd0b1c252166253ebd393c59fe613901df50ef8ec/
Threat name:
Script-JS.Trojan.ModiLoader
Create hunting rule
Status:
Malicious
First seen:
2025-07-07 11:30:25 UTC
File Type:
Text
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=3the7syve7nn45oz46gnbmockilgeu7l2oj4lh7gcoib35io7dwa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
dbatloader
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
modiloader
Create hunting rule
Score:
  10/10
Tags:
family:modiloader collection discovery execution spyware stealer trojan
Link:
https://tria.ge/reports/250707-qfpvxsaq2t/
Behaviour
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
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
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Executes dropped EXE
Reads WinSCP keys stored on the system
Reads user/profile data of web browsers
ModiLoader Second Stage
ModiLoader, DBatLoader
Modiloader family
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/dcce4fcb1527dade75d9e78cd0b1c252166253ebd393c59fe613901df50ef8ec

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:nirsoft_v1
Create hunting rule
Author:RandomMalware
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_
Create hunting rule
Author:Michelle Khalil
Description:This rule detects unpacked remcos malware samples.
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:TeslaCryptPackedMalware
Create hunting rule
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_rat_unpacked
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

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

Comments