MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d2aa39dca7c0e63e98d8f6bce6e21fb4fe05bfbb3f65933f53b95d4c7a08c9a7. 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 22 File information Comments
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SHA256 hash: d2aa39dca7c0e63e98d8f6bce6e21fb4fe05bfbb3f65933f53b95d4c7a08c9a7
SHA3-384 hash: 45f48713bde4c2630cd4b8912ae313fd469f1eba3d01faeeabb3be54fd64f1115d00e198b1a2e2a25032ef9b88efffb8
SHA1 hash: a5120f92ea416fe7955db13de0a295249b8bf344
MD5 hash: 664dcb42b61aa00a1eaebfd9b87942f1
humanhash: carpet-orange-arkansas-uniform
File name:INV547-6843 929122.js
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:2'115'256 bytes
First seen:2025-07-07 13:12:07 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:jAORxkmmXbBoG5oaOtH3C0iu7Y2kJJlLqrAnbxEqjk9+MBx6isNRPOYyt4asXQHP:kOj2bBoaOtH3hSqqE0vpasXQwiRjB
Threatray 243 similar samples on MalwareBazaar
TLSH T1D0A5F1309B0BAC8627D9544CDDC86CC10E7C0763926197E88BBDEBF21576A915DFC8AC
Magika txt
Reporter abuse_ch
Tags:js RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
35
Origin country :
SE SE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=686bc7c0c9eb9747376763ab
Tags:
infosteal autorun delphi lien
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 obfuscated packed packed
Link:
https://www.filescan.io/uploads/686bc7be469cec4249acdfa0/reports/b86c0a26-2234-4312-bf68-f6df0ea48c2a/overview
Verdict:
Malicious
Labled as:
GT:JS.Cbum.1
Link:
https://www.hybrid-analysis.com/sample/d2aa39dca7c0e63e98d8f6bce6e21fb4fe05bfbb3f65933f53b95d4c7a08c9a7
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/1730077
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
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)
Sample uses process hollowing technique
Sigma detected: DLL Search Order Hijackig Via Additional Space in Path
Sigma detected: Execution from Suspicious Folder
Sigma detected: Remcos
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: 1730077 Sample: INV547-6843 929122.js Startdate: 07/07/2025 Architecture: WINDOWS Score: 100 59 email-server.xyz 2->59 61 s-0005.dual-s-msedge.net 2->61 63 2 other IPs or domains 2->63 77 Suricata IDS alerts for network traffic 2->77 79 Found malware configuration 2->79 81 Malicious sample detected (through community Yara rule) 2->81 85 14 other signatures 2->85 9 wscript.exe 1 2 2->9         started        13 rundll32.exe 3 2->13         started        15 OUTLOOK.EXE 2->15         started        signatures3 83 Performs DNS queries to domains with low reputation 59->83 process4 file5 57 C:\Users\user\AppData\Local\Temp\x.exe, PE32 9->57 dropped 109 Benign windows process drops PE files 9->109 111 JScript performs obfuscated calls to suspicious functions 9->111 113 Windows Scripting host queries suspicious COM object (likely to drop second stage) 9->113 17 x.exe 7 9->17         started        21 Wspbmdsy.PIF 13->21         started        signatures6 process7 file8 53 C:\Users\Public\...\Wspbmdsy.PIF (copy), PE32 17->53 dropped 69 Early bird code injection technique detected 17->69 71 Allocates memory in foreign processes 17->71 73 Allocates many large memory junks 17->73 75 2 other signatures 17->75 23 SndVol.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 65 email-server.xyz 216.250.253.13, 2990, 49681, 49682 AS-TIERP-19019US United States 23->65 67 geoplugin.net 178.237.33.50, 49684, 80 ATOM86-ASATOM86NL Netherlands 23->67 55 C:\Users\user\AppData\Local\Temp\dwn.exe, PE32 23->55 dropped 99 Detected Remcos RAT 23->99 101 Contains functionalty to change the wallpaper 23->101 103 Contains functionality to steal Chrome passwords or cookies 23->103 107 6 other signatures 23->107 36 dwn.exe 23->36         started        39 SndVol.exe 1 23->39         started        41 SndVol.exe 23->41         started        51 15 other processes 23->51 105 Uses schtasks.exe or at.exe to add and modify task schedules 28->105 43 conhost.exe 28->43         started        45 conhost.exe 30->45         started        47 schtasks.exe 1 30->47         started        49 conhost.exe 32->49         started        file12 signatures13 process14 signatures15 87 Antivirus detection for dropped file 36->87 89 Multi AV Scanner detection for dropped file 36->89 91 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 36->91 93 Tries to steal Instant Messenger accounts or passwords 39->93 95 Tries to steal Mail credentials (via file / registry access) 39->95 97 Tries to harvest and steal browser information (history, passwords, etc) 51->97
Score:
88%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/d2aa39dca7c0e63e98d8f6bce6e21fb4fe05bfbb3f65933f53b95d4c7a08c9a7
Verdict:
inconclusive
YARA:
1 match(es)
Link:
https://app.malva.re/file/664dcb42b61aa00a1eaebfd9b87942f1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d2aa39dca7c0e63e98d8f6bce6e21fb4fe05bfbb3f65933f53b95d4c7a08c9a7/
Threat name:
Script-JS.Trojan.ModiLoader
Create hunting rule
Status:
Malicious
First seen:
2025-07-07 10:44:19 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=2kvdtxfhydtd5ggy626onyq7wt7alp53h5szgp2txfouy6qizgtq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
dbatloader
Create hunting rule
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error
RemcosRAT
f76651401d75d0bbc5707a5a642580a13849894342bc5f5a7049228b592a090b
RemcosRAT
+ 233 additional samples on MalwareBazaar
Result
Malware family:
modiloader
Create hunting rule
Score:
  10/10
Tags:
family:modiloader discovery execution spyware stealer trojan
Link:
https://tria.ge/reports/250707-qfpvxsaq2v/
Behaviour
Runs ping.exe
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
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/d2aa39dca7c0e63e98d8f6bce6e21fb4fe05bfbb3f65933f53b95d4c7a08c9a7

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: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_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
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: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