MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 52c2aa3e3c2187427de2e2865cb211f83b6bd6e8465085e1066b1d229bf67f4b. 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: 14

Intelligence 14 IOCs 1 YARA 20 File information Comments

SHA256 hash:	52c2aa3e3c2187427de2e2865cb211f83b6bd6e8465085e1066b1d229bf67f4b
SHA3-384 hash:	b385477fba7466b044c8bda296c9a4688ecdfb88f9a8839e1429400340076811b95a6d169a6050c781bf21859f32544e
SHA1 hash:	1bcf963cf11cda221d12a08b159ab8a0d1f761cf
MD5 hash:	a096ed34f83fadbbbbbd5ff5d538c9e2
humanhash:	tennis-yankee-burger-asparagus
File name:	doc290825986456535.vbs
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	690'182 bytes
First seen:	2025-08-29 19:45:11 UTC
Last seen:	2025-09-09 00:50:59 UTC
File type:	vbs
MIME type:	text/plain
ssdeep	12288:m8kd6yCvma3imSxaulTKORW7KcDAAuGNfGR7VPJZi4VBZCcinjno:m8kIma3iRxauEOgnuGNMNhAcMo
Threatray	1'379 similar samples on MalwareBazaar
TLSH	T1D4E4AF39C527BD9B2A1E1C48980C2D031E781ED7966CE764ED8C50E772CCA629F6D4F8
Magika	vba
Reporter	abuse_ch
Tags:	RAT RemcosRAT vbs

abuse_ch

RemcosRAT C2:
172.245.4.224:2404

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOC	ThreatFox Reference
172.245.4.224:2404	https://threatfox.abuse.ch/ioc/1577749/

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Detection:

Remcos

Link:

https://www.capesandbox.com/analysis/24165/

Detection(s):

SecuriteInfo.com.Generic-EXE.UNOFFICIAL

SecuriteInfo.com.PUA.Base64EXE-2.UNOFFICIAL

Sanesecurity.Malware.26271.JsHeur.UNOFFICIAL

Verdict:

Malicious

Score:

94.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68b20376eb163e0ec183181a

Tags:

dropper crypted lien remo

Verdict:

Malicious

Labled as:

GT:VB.Dropper.2

Link:

https://www.hybrid-analysis.com/sample/52c2aa3e3c2187427de2e2865cb211f83b6bd6e8465085e1066b1d229bf67f4b

Verdict:

Unknown

File Type:

Link:

https://opentip.kaspersky.com/52c2aa3e3c2187427de2e2865cb211f83b6bd6e8465085e1066b1d229bf67f4b/results?tab=lookup

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1767895

Signature

Antivirus detection for dropped file

Attempt to bypass Chrome Application-Bound Encryption

Benign windows process drops PE files

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

Detected Remcos RAT

Detected unpacking (creates a PE file in dynamic memory)

Found evasive API chain checking for user administrative privileges

Found hidden mapped module (file has been removed from disk)

Found malware configuration

Found stalling execution ending in API Sleep call

Installs a global keyboard hook

Joe Sandbox ML detected suspicious sample

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

Potential malicious VBS script found (has network functionality)

Sigma detected: Potential Data Stealing Via Chromium Headless Debugging

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 steal Instant Messenger accounts or passwords

Tries to steal Mail credentials (via file / registry access)

Tries to steal Mail credentials (via file registry)

VBScript performs obfuscated calls to suspicious functions

Windows Scripting host queries suspicious COM object (likely to drop second stage)

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Yara detected WebBrowserPassView password recovery tool

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/52c2aa3e3c2187427de2e2865cb211f83b6bd6e8465085e1066b1d229bf67f4b

Verdict:

Malware

YARA:

2 match(es)

Tags:

Base64 Block Base64 Payload Contains Base64 Block Executable PE (Portable Executable) PE Memory-Mapped (Dump) VBScript

Link:

https://app.malva.re/file/a096ed34f83fadbbbbbd5ff5d538c9e2

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/52c2aa3e3c2187427de2e2865cb211f83b6bd6e8465085e1066b1d229bf67f4b/

Verdict:

Malicious

Threat:

Backdoor.Win32.Remcos

Link:

https://tip.neiki.dev/file/52c2aa3e3c2187427de2e2865cb211f83b6bd6e8465085e1066b1d229bf67f4b

Threat name:

Script-WScript.Backdoor.Remcos

Status:

Suspicious

First seen:

2025-08-29 19:45:57 UTC

File Type:

Text (VBS)

AV detection:

10 of 38 (26.32%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=klbkupr4egdue7pc4kdfzmqr7a5wxvxiiziilyignmosfg7wp5fq._file

Result

Malware family:

n/a

Score:

9/10

Tags:

collection credential_access discovery execution persistence spyware stealer

Link:

https://tria.ge/reports/250829-ygny1ssjs6/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies data under HKEY_USERS

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Drops file in Program Files directory

Drops file in Windows directory

Suspicious use of SetThreadContext

Accesses Microsoft Outlook accounts

Adds Run key to start application

Checks computer location settings

Executes dropped EXE

Reads user/profile data of web browsers

Command and Scripting Interpreter: PowerShell

Uses browser remote debugging

Detected Nirsoft tools

NirSoft MailPassView

NirSoft WebBrowserPassView

Malware family:

Mimikatz

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/52c2aa3e3c21/report/overview.html

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/52c2aa3e3c2187427de2e2865cb211f83b6bd6e8465085e1066b1d229bf67f4b

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:	Check_OutputDebugStringA_iat Create hunting rule

Rule name:	CP_AllMal_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication

Rule name:	CP_Script_Inject_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	Detects attempts to inject code into another process across PE, ELF, Mach-O binaries

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerCheck__QueryInfo 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:	INDICATOR_EXE_Packed_MPress Create hunting rule
Author:	ditekSHen
Description:	Detects executables built or packed with MPress PE compressor

Rule name:	INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing SQL queries to confidential data stores. Observed in infostealers

Rule name:	Invoke_Mimikatz Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Invoke-Mimikatz String
Reference:	https://github.com/clymb3r/PowerShell/tree/master/Invoke-Mimikatz

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	TeslaCryptPackedMalware Create hunting rule

Rule name:	WIN_WebSocket_Base64_C2_20250726 Create hunting rule
Author:	dogsafetyforeverone
Description:	Detects configuration strings used by malware to specify WebSocket command-and-control endpoints inside Base64-encoded data. It looks for prefixes such as '#ws://' or '#wss://' that were found in QuasarRAT configuration data.

File information

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

Cape

https://www.capesandbox.com/analysis/24165/

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