MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d64af63b3c818348366ac1148f44ae6125eeb02291c2a236eb839f8b4ba997c3. 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: 13

Intelligence 13 IOCs YARA 26 File information Comments

SHA256 hash:	d64af63b3c818348366ac1148f44ae6125eeb02291c2a236eb839f8b4ba997c3
SHA3-384 hash:	05e75362dd4243a3ca7867b03235b064999c427f10d779b5273f16148c7379aacf1b95076617628174d3e98fa818fe38
SHA1 hash:	dd04643b6cdf1bfc16035515dddd377389876264
MD5 hash:	e3c45c192fa09dc9cab757d305c9d71b
humanhash:	coffee-mississippi-north-skylark
File name:	task.js
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	915'084 bytes
First seen:	2026-09-09 17:54:47 UTC
Last seen:	Never
File type:	js
MIME type:	text/plain
ssdeep	24576:5XWvEVAFETDRxKc1dxXcWgjxAOWC83kNQJ+RWuQCvsf+cz:5mEVsKPHLc/BC3buLvs2i
TLSH	T1071522222BA4AFF5433C252528BFDAAF12F8439104FCE59D5EA5BCD8105CB86607F91D
Magika	javascript
Reporter	abuse_ch
Tags:	js RAT RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

117

Origin country :

Vendor Threat Intelligence

No detections

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6ac91c00b3f924fbb50ae24a

Tags:

vmdetect cryxos

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

anti-vm obfuscated repaired

Link:

https://www.filescan.io/uploads/6aa19d995df170d117fe0469/reports/988aaec6-8f79-4a10-b5d5-355ebb7e4023/overview

Verdict:

Malicious

Labled as:

Trojan.Cryxos.JS

Link:

https://www.hybrid-analysis.com/sample/d64af63b3c818348366ac1148f44ae6125eeb02291c2a236eb839f8b4ba997c3

Verdict:

Malicious

File Type:

First seen:

2026-09-09T15:02:00Z UTC

Last seen:

2026-09-09T16:18:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/d64af63b3c818348366ac1148f44ae6125eeb02291c2a236eb839f8b4ba997c3/results?tab=lookup

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1970870

Signature

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Contains functionality to bypass UAC (CMSTPLUA)

Contains functionality to register a low level keyboard hook

Contains functionalty to change the wallpaper

Creates processes via WMI

Found malware configuration

Injects a PE file into a foreign processes

Installs a global keyboard hook

JavaScript source code contains functionality to compute date of execution (likely for evasion)

JavaScript source code contains functionality to generate code involving a shell, file or stream

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Sigma detected: Remcos

Sigma detected: WScript or CScript Dropper

Suspicious execution chain found

Unusual module load detection (module proxying)

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

Writes to foreign memory regions

Wscript starts Powershell (via cmd or directly)

Yara detected Powershell decode and execute

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

94%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/d64af63b3c818348366ac1148f44ae6125eeb02291c2a236eb839f8b4ba997c3

Gathering data

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/d64af63b3c818348366ac1148f44ae6125eeb02291c2a236eb839f8b4ba997c3/

Threat name:

Script-JS.Trojan.Vigorf

Status:

Malicious

First seen:

2026-09-09 17:55:28 UTC

File Type:

Text (JavaScript)

AV detection:

13 of 24 (54.17%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=2zfpmoz4qgbuqntkyeki6rfomes65mbcshbkenxlqopyws5js7bq._file

Verdict:

malicious

Label(s):

Remcos

Link:

https://reports.threatray.com/f354d595-c102-4df5-a653-2bedc8ec62b5

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:colpro discovery execution rat

Link:

https://tria.ge/reports/260909-whk8eazzdx/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Command and Scripting Interpreter: JavaScript

Command and Scripting Interpreter: PowerShell

Executes a command shell one-liner

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Family: Remcos

Process spawned unexpected child process

Malware Config

C2 Extraction:

www.consultarprocesosramajudicial.com.co:2466

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/d64af63b3c818348366ac1148f44ae6125eeb02291c2a236eb839f8b4ba997c3

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:	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:	Sus_All_Windows_PE_Malware Create hunting rule
Author:	DiegoAnalytics
Description:	Detects Windows PE malware of all types, avoids non-executables like .html

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_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 d64af63b3c818348366ac1148f44ae6125eeb02291c2a236eb839f8b4ba997c3

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3609409/

Delivery method

Distributed via web download

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