MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d1cfc53e81fdcf625be8284ee7ed47fa1256de5222d2b1d4064524e90724df4e. 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: 16

Intelligence 16 IOCs YARA 21 File information Comments

SHA256 hash:	d1cfc53e81fdcf625be8284ee7ed47fa1256de5222d2b1d4064524e90724df4e
SHA3-384 hash:	bcc6b8413ec5f1c2cf2ff798ca2ca08cdd45d910e9813f51c56cb75d149afa22607ce7adef0548e330f21e0c39bd368d
SHA1 hash:	e4b87dc3aeeae4e9c9140dd068040adbb0596082
MD5 hash:	d2b5e91c42e164f40586ee39e25e6041
humanhash:	don-illinois-high-eighteen
File name:	Quotation.vbs
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	803'528 bytes
First seen:	2025-10-29 11:59:02 UTC
Last seen:	Never
File type:	vbs
MIME type:	text/plain
ssdeep	12288:GZ/S+cl20xU17X7jRbPxNt52myit2kxpm7w9cICwEV5Outz7ghychaGOCYpu3M:hJxU17RbPiniZlBCjVBADO9pu8
Threatray	190 similar samples on MalwareBazaar
TLSH	T1A805F07BC511ECDB036F316335BB2B4520643E9B9BBC4A948BB0446EFA50A59BF6704C
Magika	vba
Reporter	abuse_ch
Tags:	RAT RemcosRAT vbs

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Detection:

Remcos

Link:

https://www.capesandbox.com/analysis/34600/

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=690201a69942f1282eca0abb

Tags:

vmdetect lien

Verdict:

Malicious

Labled as:

VBS/TrojanDropper.Agent

Link:

https://www.hybrid-analysis.com/sample/d1cfc53e81fdcf625be8284ee7ed47fa1256de5222d2b1d4064524e90724df4e

Verdict:

Malicious

File Type:

text

First seen:

2025-10-29T08:10:00Z UTC

Last seen:

2025-10-31T09:30:00Z UTC

Hits:

~1000

Detections:

Trojan-Downloader.JS.Cryptoload.sb HEUR:Trojan.Script.Generic

Link:

https://opentip.kaspersky.com/d1cfc53e81fdcf625be8284ee7ed47fa1256de5222d2b1d4064524e90724df4e/results?tab=lookup

Result

Threat name:

Remcos, DonutLoader

Detection:

malicious

Classification:

phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1803841

Signature

.NET source code contains a sample name check

.NET source code references suspicious native API functions

Antivirus detection for dropped file

Attempt to bypass Chrome Application-Bound Encryption

C2 URLs / IPs found in malware configuration

Creates processes via WMI

Detected Remcos RAT

Found evasive API chain checking for user administrative privileges

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

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

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Powershell drops PE file

Sigma detected: Base64 Encoded PowerShell Command Detected

Sigma detected: Potential Data Stealing Via Chromium Headless Debugging

Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands

Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet

Sigma detected: PowerShell Base64 Encoded IEX Cmdlet

Sigma detected: Remcos

Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder

Sigma detected: WScript or CScript Dropper

Suricata IDS alerts for network traffic

Suspicious execution chain found

Suspicious powershell command line found

Switches to a custom stack to bypass stack traces

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)

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

Wscript starts Powershell (via cmd or directly)

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/d1cfc53e81fdcf625be8284ee7ed47fa1256de5222d2b1d4064524e90724df4e

Verdict:

Malware

YARA:

3 match(es)

Tags:

Base64 Block Contains Base64 Block DeObfuscated Obfuscated PowerShell Scripting.FileSystemObject T1059.005 VBScript

Link:

https://app.malva.re/file/d2b5e91c42e164f40586ee39e25e6041

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/d1cfc53e81fdcf625be8284ee7ed47fa1256de5222d2b1d4064524e90724df4e/

Verdict:

Malicious

Threat:

Backdoor.Win32.Remcos

Link:

https://tip.neiki.dev/file/d1cfc53e81fdcf625be8284ee7ed47fa1256de5222d2b1d4064524e90724df4e

Threat name:

Win32.Trojan.Znyonm

Status:

Malicious

First seen:

2025-10-29 12:01:15 UTC

File Type:

Text (VBS)

AV detection:

10 of 24 (41.67%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=2hh4kpub7xhwew7ifbhop3kh7ijfnxsseljldvagiusosbze35ha._file

Verdict:

malicious

Label(s):

remcos

nirsoft

donut_injector

admintool_mailpassview

Result

Malware family:

donutloader

Score:

10/10

Tags:

family:donutloader collection credential_access discovery execution loader stealer

Link:

https://tria.ge/reports/251029-n5sxrsfx8h/

Behaviour

Enumerates system info in registry

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

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

Executes dropped EXE

Badlisted process makes network request

Command and Scripting Interpreter: PowerShell

Uses browser remote debugging

Detected Nirsoft tools

NirSoft MailPassView

NirSoft WebBrowserPassView

Detects DonutLoader

DonutLoader

Donutloader family

Process spawned unexpected child process

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/d1cfc53e81fd/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/d1cfc53e81fdcf625be8284ee7ed47fa1256de5222d2b1d4064524e90724df4e

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:	vmdetect Create hunting rule
Author:	nex
Description:	Possibly employs anti-virtualization techniques

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/34600/

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