MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51a334a2bd11435c683d7441f94ea98f718a4a75e9af65d72f036a3e3ee1150d. 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

Intelligence 15 IOCs YARA 20 File information Comments

SHA256 hash:	51a334a2bd11435c683d7441f94ea98f718a4a75e9af65d72f036a3e3ee1150d
SHA3-384 hash:	5936fcfabda1e69ca1cab0422f37fd6c9f8202a2f9a611c50a3a39f6ce3060e54106f93bfeeafdffd423cdeeae3a142c
SHA1 hash:	29d99db3f7d12d398cd9036e8a2ac1a0c2cbaf82
MD5 hash:	556de7149d2718eb2d2eaf4159f80e86
humanhash:	sweet-washington-december-salami
File name:	51a334a2bd11435c683d7441f94ea98f718a4a75e9af65d72f036a3e3ee1150d.bat
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	804'312 bytes
First seen:	2025-10-30 08:48:04 UTC
Last seen:	Never
File type:	bat
MIME type:	text/plain
ssdeep	12288:HlQqBrNNuPiJ7U2OCPeekf/BOO4hKpdDgtjQsTmLMPmUbN/3jZs:FrNNuP6Q2JaBOOhpdm1T5J3S
Threatray	129 similar samples on MalwareBazaar
TLSH	T1E505AC2E89F8B98FF668709442FA3A0B10CDDED65E3445DD9551C0513EECD3AAA1E30B
Magika	batch
Reporter	JAMESWT_WT
Tags:	bat blessingshope100-duckdns-org RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

51a334a2bd11435c683d7441f94ea98f718a4a75e9af65d72f036a3e3ee1150d.bat

Verdict:

Malicious activity

Analysis date:

2025-10-30 08:49:47 UTC

Tags:

remcos rat remote susp-powershell api-base64

Link:

https://app.any.run/tasks/b6dc00c7-154e-4a77-babc-a5d7ac1c5391

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

Remcos

Link:

https://www.capesandbox.com/analysis/34755/

Verdict:

Suspicious

Score:

50%

Link:

https://cyber-fortress.com/docs/result/index.php?id=690326669942f1282eca66b2

Tags:

obfuscate xtreme shell

Result

Verdict:

Malware

Maliciousness:

Behaviour

Running batch commands

Launching cmd.exe command interpreter

Creating a file

Launching a process

Сreating synchronization primitives

DNS request

Connection attempt

Sending a custom TCP request

Creating a window

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

base64 evasive obfuscated powershell

Link:

https://www.filescan.io/uploads/6903264f21d55ed90d428e22/reports/0b6b1531-856c-4a9e-bb73-78bebec940a8/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/51a334a2bd11435c683d7441f94ea98f718a4a75e9af65d72f036a3e3ee1150d

Verdict:

Malicious

File Type:

unix shell

First seen:

2025-10-29T21:41:00Z UTC

Last seen:

2025-11-01T04:28:00Z UTC

Hits:

~100

Detections:

Trojan.Win32.Shellcode.sb Trojan.BAT.Agent.sb HEUR:Trojan.PowerShell.Tesre.sb Backdoor.Win32.Remcos.e Trojan.PowerShell.AmsiBypass.sb PDM:Trojan.Win32.Generic HEUR:Trojan.BAT.Tesre.gen

Link:

https://opentip.kaspersky.com/51a334a2bd11435c683d7441f94ea98f718a4a75e9af65d72f036a3e3ee1150d/results?tab=lookup

Score:

100%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/51a334a2bd11435c683d7441f94ea98f718a4a75e9af65d72f036a3e3ee1150d

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/51a334a2bd11435c683d7441f94ea98f718a4a75e9af65d72f036a3e3ee1150d/

Verdict:

Malicious

Threat:

Family.REMCOS

Link:

https://tip.neiki.dev/file/51a334a2bd11435c683d7441f94ea98f718a4a75e9af65d72f036a3e3ee1150d

Threat name:

Win32.Trojan.Generic

Status:

Suspicious

First seen:

2025-10-30 03:56:00 UTC

File Type:

Text

AV detection:

4 of 38 (10.53%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=kgrtjiv5cfbvy2b5ora7stvjr5yyustv5gxwlvzpanvd4pxbcugq._file

Result

Malware family:

donutloader

Score:

10/10

Tags:

family:donutloader discovery execution loader

Link:

https://tria.ge/reports/251030-kqqbjsfm7t/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Command and Scripting Interpreter: PowerShell

Badlisted process makes network request

Detects DonutLoader

DonutLoader

Donutloader 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/51a334a2bd11435c683d7441f94ea98f718a4a75e9af65d72f036a3e3ee1150d

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:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

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:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

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_SUSPICIOUS_EXE_UACBypass_CMSTPCOM Create hunting rule
Author:	ditekSHen
Description:	Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	pe_no_import_table Create hunting rule
Description:	Detect pe file that no import table

Rule name:	Remcos Create hunting rule
Author:	kevoreilly
Description:	Remcos Payload

Rule name:	REMCOS_RAT_variants Create hunting rule

Rule name:	Remcos_unpacked_PulseIntel Create hunting rule
Author:	PulseIntel
Description:	Remcos Payload

Rule name:	Sus_CMD_Powershell_Usage Create hunting rule
Author:	XiAnzheng
Description:	May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

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.

Cape

https://www.capesandbox.com/analysis/34755/

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