MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 af2fe8381a8dbcc5878e080919e5afe3354c1fd2080ff646e02f274d70abf6ec. 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 21 File information Comments

SHA256 hash:	af2fe8381a8dbcc5878e080919e5afe3354c1fd2080ff646e02f274d70abf6ec
SHA3-384 hash:	413838ccb4a6b92ea548af4805d2769b0aceddf136571d5f2b58c4587c5c6faec8e0f9f8b06276df039c49d7254c6d41
SHA1 hash:	87e3feb7c6b245735af7f212631cfc06bf26e83e
MD5 hash:	8d2af6cabc7d269d1a73dcf47919997d
humanhash:	sad-red-alaska-indigo
File name:	PO NOV2025_1762289702.xls.vbs
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	900'047 bytes
First seen:	2025-11-05 14:14:51 UTC
Last seen:	2025-11-07 14:06:48 UTC
File type:	vbs
MIME type:	text/plain
ssdeep	12288:OkJNJ6z9NuOLGTo/t4r0rLXV/Zti7G55h09Smg5etOwKJ6G6XBYuxfQAxq:TJ6zmTet9LXU7G5z09nw/JNLUc
Threatray	1'355 similar samples on MalwareBazaar
TLSH	T1711546EED8F07CE582AC2F53BD620E1E2B5A06615C243D468661B3E429F5F5A93DD00F
Magika	vba
Reporter	James_inthe_box
Tags:	exe RemcosRAT vbs

Intelligence

File Origin

# of uploads :

# of downloads :

113

Origin country :

Vendor Threat Intelligence

Detection:

Remcos

Link:

https://www.capesandbox.com/analysis/35523/

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=690b5c1d5a5ed7864e23231f

Tags:

obfuscate xtreme shell lien

Verdict:

Suspicious

Labled as:

VBS/Agent.CJR

Link:

https://www.hybrid-analysis.com/sample/af2fe8381a8dbcc5878e080919e5afe3354c1fd2080ff646e02f274d70abf6ec

Verdict:

Malicious

File Type:

text

First seen:

2025-11-04T19:13:00Z UTC

Last seen:

2025-11-05T10:49:00Z UTC

Hits:

~1000

Link:

https://opentip.kaspersky.com/af2fe8381a8dbcc5878e080919e5afe3354c1fd2080ff646e02f274d70abf6ec/results?tab=lookup

Score:

99%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/af2fe8381a8dbcc5878e080919e5afe3354c1fd2080ff646e02f274d70abf6ec

Verdict:

Malware

YARA:

1 match(es)

Tags:

Scripting.FileSystemObject VBScript

Link:

https://app.malva.re/file/8d2af6cabc7d269d1a73dcf47919997d

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/af2fe8381a8dbcc5878e080919e5afe3354c1fd2080ff646e02f274d70abf6ec/

Verdict:

Malicious

Threat:

Family.DONUTLOADER

Link:

https://tip.neiki.dev/file/af2fe8381a8dbcc5878e080919e5afe3354c1fd2080ff646e02f274d70abf6ec

Threat name:

Win32.Trojan.Leonem

Status:

Malicious

First seen:

2025-11-05 14:14:52 UTC

File Type:

Text

AV detection:

10 of 36 (27.78%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=v4x6qoa2rw6mlb4obaertznp4m2uyh6sbah7mrxaf4tu24fl63wa._file

Verdict:

malicious

Label(s):

nirsoft

donutloader

admintool_mailpassview

remcos

Result

Malware family:

donutloader

Score:

10/10

Tags:

family:donutloader collection credential_access discovery execution loader stealer

Link:

https://tria.ge/reports/251105-rkz25afk5t/

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:

WebBrowserPassView

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/af2fe8381a8d/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/af2fe8381a8dbcc5878e080919e5afe3354c1fd2080ff646e02f274d70abf6ec

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:	SUSP_PS1_JAB_Pattern_Jun22_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects suspicious UTF16 and Base64 encoded PowerShell code that starts with a $ sign and a single char variable
Reference:	Internal Research

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

z 5abb430a9a370206fdba8c9ad16d4cdcdcdbd27fc6d3e1eca0ac9a6619b416fc

RemcosRAT

vbs af2fe8381a8dbcc5878e080919e5afe3354c1fd2080ff646e02f274d70abf6ec

(this sample)

Cape

https://www.capesandbox.com/analysis/35523/

Dropped by

SHA256 5abb430a9a370206fdba8c9ad16d4cdcdcdbd27fc6d3e1eca0ac9a6619b416fc

Dropped by

MD5 50a3776333008cc877170dd993082fc4

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