MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 df8a0674c9865e2cb1ec78d54f48d9c6af47e4955b8724c49567f98ae060bb3f. 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: 15
| SHA256 hash: | df8a0674c9865e2cb1ec78d54f48d9c6af47e4955b8724c49567f98ae060bb3f |
|---|---|
| SHA3-384 hash: | d8e0ce29a90a62dd22f4c802e47b6cad2761aca4ef59c1f070f53a127a9ad65714d872f32d67bb8eef692a56a93b1287 |
| SHA1 hash: | 497e196b7d2b7f86192190775a46a06175a51ab7 |
| MD5 hash: | 9bda4bde8fde5920ad8567be3f640332 |
| humanhash: | bravo-uranus-orange-maryland |
| File name: | AB - 3167349 - 15.12.2025D HOT KBB9083.js |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 2'506'424 bytes |
| First seen: | 2025-12-14 06:35:05 UTC |
| Last seen: | Never |
| File type: |  js |
| MIME type: | text/plain |
| ssdeep | 24576:+rFLZDEBZ+zdTchtzgxyRj/MgYnlBqTbqHqxzOSLcTirppzfk0osmhO8aWOltXLq:YeB0TchtzgYyTHqeTir/fkJJrg0E+ |
| Threatray | 4'034 similar samples on MalwareBazaar |
| TLSH | T120C59C38DE51AC162BAFC418E7EE39C7BF2D1F47C160499886EFDDB903A442156D82B4 |
| Magika | vba |
| Reporter |  abuse_ch |
| Tags: | js RemcosRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
110
Origin country :
SEVendor Threat Intelligence
No detections
Detection(s):
Verdict:
Malicious
Score:
99.9%
Tags:
autorun delphi emotet
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-debug base64 dropper fingerprint keylogger obfuscated obfuscated packed repaired zusy
Verdict:
Malicious
Labled as:
GT:JS.Cbum.1.25F49B73;Gen:Zusy
Verdict:
Malicious
File Type:
js
First seen:
2025-12-12T08:37:00Z UTC
Last seen:
2025-12-16T04:20:00Z UTC
Hits:
~1000
Detections:
Trojan.Win64.Agentb.sb HEUR:Trojan.Win32.DelfInject.gen HEUR:Trojan.Win32.Generic Exploit.Win32.BypassUAC.sb Trojan-Dropper.Win32.Agent.sb Trojan.Win32.Inject.sb HEUR:Trojan.Win32.Convagent.gen HEUR:Trojan.Script.Generic Backdoor.Win32.Remcos.f Backdoor.Win32.Remcos.e Trojan-Spy.Win32.Stealer.sb Trojan-Dropper.JS.SDrop.sb Trojan-Downloader.JS.Cryptoload.sb HEUR:Trojan.Script.SAgent.gen Backdoor.Win32.Remcos.sb Backdoor.Win32.Agent.sb
Result
Threat name:
Remcos, DBatLoader
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
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 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 a thread in another existing process (thread injection)
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Injects a PE file into a foreign processes
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Execution from Suspicious Folder
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
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
Yara detected DBatLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Score:
96%
Verdict:
Malware
File Type:
SCRIPT
Verdict:
inconclusive
YARA:
1 match(es)
Detection:
remcos
Verdict:
Malicious
Threat:
Family.REMCOS
Threat name:
Script-JS.Trojan.Leonem
Status:
Malicious
First seen:
2025-12-12 14:52:22 UTC
File Type:
Text
AV detection:
17 of 36 (47.22%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
novastealer
remcos
dbatloader
Similar samples:
+ 4'024 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:masslogger family:modiloader family:remcos botnet:remotehost collection discovery execution persistence rat spyware stealer trojan
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Checks computer location settings
Drops startup file
Executes dropped EXE
Detected Nirsoft tools
ModiLoader Second Stage
NirSoft MailPassView
NirSoft WebBrowserPassView
MassLogger
Masslogger family
ModiLoader, DBatLoader
Modiloader family
Remcos
Remcos family
Malware Config
C2 Extraction:
45.138.16.206:443
Malware family:
Remcos
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | CP_Script_Inject_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | FreddyBearDropper |
|---|---|
| Author: | Dwarozh Hoshiar |
| Description: | Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip. |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | iexplorer_remcos |
|---|---|
| Author: | iam-py-test |
| Description: | Detect iexplorer being taken over by Remcos |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer |
|---|---|
| Author: | ditekSHen |
| Description: | detects Windows exceutables potentially bypassing UAC using eventvwr.exe |
| Rule name: | pe_detect_tls_callbacks |
|---|
| Rule name: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| Rule name: | Remcos |
|---|---|
| Author: | kevoreilly |
| Description: | Remcos Payload |
| Rule name: | REMCOS_RAT_variants |
|---|
| Rule name: | ThreadControl__Context |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | Windows_Trojan_Remcos_b296e965 |
|---|---|
| Author: | Elastic Security |
| Reference: | https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set |
| Rule name: | win_remcos_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.remcos. |
| Rule name: | win_remcos_rat_unpacked |
|---|---|
| Author: | Matthew @ Embee_Research |
| Description: | Detects strings present in remcos rat Samples. |
| Rule name: | win_remcos_w0 |
|---|---|
| Author: | Matthew @ Embee_Research |
| Description: | Detects strings present in remcos rat Samples. |
| Rule name: | yarahub_win_remcos_rat_unpacked_aug_2023 |
|---|---|
| Author: | Matthew @ Embee_Research |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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