MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d8a61370f97491b1af554b214864378a5ec447343c8d5a217b037823f3269b22. 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 25 File information Comments

SHA256 hash:	d8a61370f97491b1af554b214864378a5ec447343c8d5a217b037823f3269b22
SHA3-384 hash:	a5c0e2ae0ea075599d0e604ac36d5d92acf72b91343b2008c6543b702d8842d15eac59399eacc0aa0a7513f6179e214a
SHA1 hash:	e5052573e7dddeda7b964864439cd5d44e0b0d7f
MD5 hash:	3c2d7903451f2d4b7558d2deef37da6a
humanhash:	pizza-alabama-cat-freddie
File name:	RFQ_urgent_1125.bat
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	794'792 bytes
First seen:	2025-11-04 11:51:37 UTC
Last seen:	2025-11-04 11:52:36 UTC
File type:	bat
MIME type:	text/plain
ssdeep	12288:qwwmaIrxPh+kuEbN7HW8tDrwRHpQxdP90goci/lozMgOK/A:qwwxID6bwrwRHpWn0ZWk
Threatray	1'283 similar samples on MalwareBazaar
TLSH	T1E0F4792BA51FB88CAED8A8D4F5F93ED833580B5693B1064C900FCC672C15EAD8E5715B
Magika	txt
Reporter	lowmal3
Tags:	bat RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

RFQ_urgent_1125.bat

Verdict:

Malicious activity

Analysis date:

2025-11-04 11:52:00 UTC

Tags:

rat remcos susp-powershell api-base64

Link:

https://app.any.run/tasks/2587b0ca-4983-41ef-a9fe-917b32779a17

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/35286/

Detection(s):

SecuriteInfo.com.BAT.Obfus-8.UNOFFICIAL

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6909e8de9942f1282ecbed12

Tags:

obfuscate xtreme shell

Result

Verdict:

Malware

Maliciousness:

Behaviour

Running batch commands

Launching cmd.exe command interpreter

Creating a file

Launching a process

DNS request

Connection attempt

Сreating synchronization primitives

Creating a file in the %temp% directory

Reading critical registry keys

Launching a service

Changing a file

Connection attempt to an infection source

Sending a TCP request to an infection source

Forced shutdown of a system process

Stealing user critical data

Unauthorized injection to a system process

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

base64 evasive obfuscated powershell

Link:

https://www.filescan.io/uploads/6909e8f385b61a93a733f53f/reports/f0d1a54b-38ad-460e-adb3-cdcd1cecd372/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/d8a61370f97491b1af554b214864378a5ec447343c8d5a217b037823f3269b22

Verdict:

Malicious

File Type:

unix shell

First seen:

2025-11-03T20:33:00Z UTC

Last seen:

2025-11-05T09:48:00Z UTC

Hits:

~1000

Detections:

Trojan.PowerShell.AmsiBypass.sb Backdoor.Remcos.TCP.C&C Trojan-PSW.Win32.Stealer.sb PDM:Trojan.Win32.Generic HEUR:Trojan.BAT.Tesre.gen Trojan.Win32.Shellcode.sb Trojan.BAT.Agent.sb HEUR:Trojan.PowerShell.Tesre.sb Backdoor.Win32.Remcos.f Backdoor.Win32.Remcos.e

Link:

https://opentip.kaspersky.com/d8a61370f97491b1af554b214864378a5ec447343c8d5a217b037823f3269b22/results?tab=lookup

Result

Threat name:

Remcos, DonutLoader

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1807683

Signature

.NET source code contains a sample name check

.NET source code references suspicious native API functions

Bypasses PowerShell execution policy

C2 URLs / IPs found in malware configuration

Detected Remcos RAT

Found malware configuration

Found suspicious powershell code related to unpacking or dynamic code loading

Installs a global keyboard hook

Joe Sandbox ML detected suspicious sample

Loading BitLocker PowerShell Module

Malicious sample detected (through community Yara rule)

Maps a DLL or memory area into another process

Sigma detected: Base64 Encoded PowerShell Command Detected

Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet

Sigma detected: PowerShell Base64 Encoded IEX Cmdlet

Sigma detected: Remcos

Sigma detected: Suspicious PowerShell Parameter Substring

Sigma detected: Suspicious Script Execution From Temp Folder

Suricata IDS alerts for network traffic

Suspicious powershell command line found

Tries to harvest and steal browser information (history, passwords, etc)

Yara detected DonutLoader

Yara detected Powershell decode and execute

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/d8a61370f97491b1af554b214864378a5ec447343c8d5a217b037823f3269b22

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/d8a61370f97491b1af554b214864378a5ec447343c8d5a217b037823f3269b22/

Verdict:

Malicious

Threat:

Backdoor.Win32.Remcos

Link:

https://tip.neiki.dev/file/d8a61370f97491b1af554b214864378a5ec447343c8d5a217b037823f3269b22

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=3ctbg4hzosi3dl2vjmquqzbxrjpmirzuhsgvuil3an4ch4zgtmra._file

Verdict:

malicious

Label(s):

admintool_iepassview

donutloader

remcos

admintool_mailpassview

Result

Malware family:

donutloader

Score:

10/10

Tags:

family:donutloader collection discovery execution loader

Link:

https://tria.ge/reports/251104-n1lyna1rgp/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Accesses Microsoft Outlook accounts

Command and Scripting Interpreter: PowerShell

Badlisted process makes network request

Detected Nirsoft tools

NirSoft MailPassView

NirSoft WebBrowserPassView

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/d8a61370f97491b1af554b214864378a5ec447343c8d5a217b037823f3269b22

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:	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_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.

Malspam

RemcosRAT

bat d8a61370f97491b1af554b214864378a5ec447343c8d5a217b037823f3269b22

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/35286/

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