MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0ef01158702b3eca6702800a4264baa9d0b92b6e638470991edaa284ccf8e8c7. 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: 9

Intelligence 9 IOCs YARA 38 File information Comments

SHA256 hash:	0ef01158702b3eca6702800a4264baa9d0b92b6e638470991edaa284ccf8e8c7
SHA3-384 hash:	4832b5cb223d29f27af92507725f9f720f9f972d10049d933c15d6198dfa96d392bd04a0c43a8b7f27e86ecceb824af5
SHA1 hash:	d570380db958147bf58540579c62d2ff62d4e6fa
MD5 hash:	f889ccaa19334c659e065ae83943a663
humanhash:	blue-ten-carpet-wolfram
File name:	file
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	3'451'936 bytes
First seen:	2026-10-05 17:12:01 UTC
Last seen:	2026-10-12 20:41:59 UTC
File type:	js
MIME type:	application/javascript
ssdeep	49152:KZkyhTbaa55MHrzgsUQGYCyhkWvpVDqf0oLYVgF:G
TLSH	T152F5F15185C03FE8DF79961840FD962EE3B10A9B4C2D694ABB3FBD45AFB7500920718B
Magika	javascript
Reporter	Bitsight
Tags:	dropped-by-remcos js RemcosRAT Remotehost

Intelligence

File Origin

# of uploads :

# of downloads :

157

Origin country :

Vendor Threat Intelligence

No detections

Detection(s):

SecuriteInfo.com.JS.Obfus-2303.UNOFFICIAL

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6acf87396f551121ba154137

Tags:

agenttesla vmdetect autorun

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

encrypted obfuscated repaired

Link:

https://www.filescan.io/uploads/6ac3e62caa8f8fc6388ab841/reports/62e09ce5-3b4d-4de8-a244-658f6afa518d/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/0ef01158702b3eca6702800a4264baa9d0b92b6e638470991edaa284ccf8e8c7

Verdict:

Malicious

File Type:

First seen:

2026-10-05T16:23:00Z UTC

Last seen:

2026-10-05T16:42:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/0ef01158702b3eca6702800a4264baa9d0b92b6e638470991edaa284ccf8e8c7/results?tab=lookup

Score:

99%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/0ef01158702b3eca6702800a4264baa9d0b92b6e638470991edaa284ccf8e8c7

Gathering data

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/0ef01158702b3eca6702800a4264baa9d0b92b6e638470991edaa284ccf8e8c7/

Threat name:

Script-JS.Trojan.ObfPadding

Status:

Malicious

First seen:

2026-10-05 18:02:29 UTC

File Type:

Text (JavaScript)

AV detection:

8 of 24 (33.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=b3ybcwdqfm7muzycqafeezf2vhilsk3omochbgi63krijthy5ddq._file

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:remotehost collection defense_evasion discovery execution persistence privilege_escalation rat trojan

Link:

https://tria.ge/reports/261005-wmlpqszz7r/

Behaviour

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

outlook_office_path

Command and Scripting Interpreter: JavaScript

Enumerates physical storage devices

Reads the TCP/IP host and domain name from the registry

ConfuserEx .NET packer

Suspicious use of SetThreadContext

Accesses Microsoft Outlook profiles

Adds Run key to start application

Enumerates connected drives

Creates a file in the Startup directory

Command and Scripting Interpreter: PowerShell

Family: Remcos

UAC bypass

Malware Config

C2 Extraction:

104.129.171.63:2404

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Legit

Score:

0.00

Link:

https://yomi.yoroi.company/submissions/0ef01158702b3eca6702800a4264baa9d0b92b6e638470991edaa284ccf8e8c7

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:	Base64_Encoded_Powershell_Directives Create hunting rule

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:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	INDICATOR_SUSPICIOUS_Binary_References_Browsers Create hunting rule
Author:	ditekSHen
Description:	Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

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:	NET Create hunting rule
Author:	malware-lu

Rule name:	pe_detect_tls_callbacks Create hunting rule

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:	SCRIPT_Dropper_Formbook_ForgeAuto_10592ed2_Script Create hunting rule
Author:	Marjoriefort
Description:	Detects Formbook (script_js, etat script)

Rule name:	SCRIPT_Dropper_Formbook_ForgeAuto_a070f81e_Script Create hunting rule
Author:	Marjoriefort
Description:	Detects Formbook (script_js, etat script)

Rule name:	SUSP_JS_HexObfuscated_ActiveX_Launcher Create hunting rule
Author:	Marjoriefort
Description:	JS obfusque (identifiants _0x) instanciant ActiveX sous WScript - dropper JScript frais
Reference:	Veille fraicheur 2026-09-14 / cluster JS _0x

Rule name:	SUSP_Script_PowerShell_Hidden_Launcher Create hunting rule
Author:	Marjoriefort
Description:	Script (JS/VBS) lancant PowerShell en mode furtif - dropper frais MalwareBazaar
Reference:	Veille fraicheur 2026-09-14 / cluster misses web

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:	telebot_framework Create hunting rule
Author:	vietdx.mb

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

Rule name:	TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE Create hunting rule
Author:	CYFARE
Description:	Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:	https://cyfare.net/

Rule name:	VECT_Ransomware Create hunting rule
Author:	Mustafa Bakhit
Description:	Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

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

Rule name:	Windows_Trojan_Remcos_921ef449 Create hunting rule
Author:	Elastic Security

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_Clipboard_Clipper_Thengavar Create hunting rule
Author:	Thengavar
Description:	Detects malware manipulating the Windows clipboard for clipping or crypto stealing attacks

Rule name:	WIN_Malware_Unknown_ForgeAuto_2ffc3572 Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat binaire)

Rule name:	WIN_Malware_Unknown_ForgeAuto_74566f98 Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat binaire)

Rule name:	WIN_Malware_Unknown_ForgeAuto_79234c04 Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat binaire)

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.

Web download

RemcosRAT

js 0ef01158702b3eca6702800a4264baa9d0b92b6e638470991edaa284ccf8e8c7

(this sample)

Dropped by

Remcos

Delivery method

Distributed via web download

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