MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3d86eb5dce3a7b3e6d76449da7d75e974e43c5ed6a894554d137f93073cea1ee. 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: 12

Intelligence 12 IOCs YARA 25 File information Comments

SHA256 hash:	3d86eb5dce3a7b3e6d76449da7d75e974e43c5ed6a894554d137f93073cea1ee
SHA3-384 hash:	cb7c5da0a87fd41943cc4d866558c62cb900a8f2e33709d64e2b9a05313f0e9f1d51142e936131050fd35fca7cb0f73b
SHA1 hash:	daa358b8278fd7ced797badade91a440bf6b31a1
MD5 hash:	d06ed1be2cd3c642b8d668930589bce2
humanhash:	romeo-lithium-sweet-texas
File name:	task.js
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	847'798 bytes
First seen:	2026-09-23 08:16:34 UTC
Last seen:	Never
File type:	js
MIME type:	text/plain
ssdeep	12288:nYNBXlTp/SRy3IMNsulboTl8FFp4oe+447JeZNrx2w2mwiTbMVTaCy:MTp/SReNZIl4pP447kZL2g+Bat
TLSH	T17C05E020153DA40F8237D02563AB235C1AAD974A891EF31A757DA2F10FFB1B9125BFC6
TrID	57.1% (.S) Digital Micrograph Script (4000/1/1) 42.8% (.TRA) Infinity Engine Translation (with rem) (3001/2/1)
Magika	javascript
Reporter	abuse_ch
Tags:	js RAT RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

164

Origin country :

Vendor Threat Intelligence

No detections

Detection(s):

Sanesecurity.Malware.26222.JsHeur.UNOFFICIAL

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

base64 base64 corrupted encrypted evasive evasive fingerprint obfuscated obfuscated overlay packed persistence powershell reconnaissance repaired

Link:

https://www.filescan.io/uploads/6ab38b0cb89c596ea3a988e0/reports/b19c94c6-719c-48ca-ab33-cfe3c8066007/overview

Verdict:

Malicious

Labled as:

Trojan.Cryxos.JS

Link:

https://www.hybrid-analysis.com/sample/3d86eb5dce3a7b3e6d76449da7d75e974e43c5ed6a894554d137f93073cea1ee

Verdict:

Malicious

File Type:

First seen:

2026-09-22T22:15:00Z UTC

Last seen:

2026-09-22T22:23:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/3d86eb5dce3a7b3e6d76449da7d75e974e43c5ed6a894554d137f93073cea1ee/results?tab=lookup

Result

Threat name:

n/a

Detection:

malicious

Classification:

evad

Score:

84 / 100

Link:

https://www.joesandbox.com/analysis/1976601

Signature

JavaScript file contains suspicious strings

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

JScript performs obfuscated calls to suspicious functions

Multi AV Scanner detection for submitted file

Sigma detected: WScript or CScript Dropper

Sigma detected: WScript or CScript Dropper - File

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

Wscript called in batch mode (surpress errors)

WScript reads language and country specific registry keys (likely country aware script)

Behaviour

Behavior Graph:

Download SVG

Score:

92%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/3d86eb5dce3a7b3e6d76449da7d75e974e43c5ed6a894554d137f93073cea1ee

Verdict:

Malware

YARA:

2 match(es)

Tags:

Base64 Block Contains Base64 Block DeObfuscated Javascript PowerShell T1027 T1059.001 T1059.007

Link:

https://app.malva.re/file/d06ed1be2cd3c642b8d668930589bce2

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/3d86eb5dce3a7b3e6d76449da7d75e974e43c5ed6a894554d137f93073cea1ee/

Threat name:

Script-JS.Trojan.Vigorf

Status:

Malicious

First seen:

2026-09-23 00:58:43 UTC

File Type:

Text (JavaScript)

AV detection:

11 of 23 (47.83%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=hwdowxoohj5t43lwiso2pv26s5hehrpnnkeukvgrg74ta46ouhxa._file

Verdict:

malicious

Label(s):

Remcos

Link:

https://reports.threatray.com/232afec9-f984-4897-9403-b4b54616b43f

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:colpro discovery execution persistence rat

Link:

https://tria.ge/reports/260923-j6ts8swxgt/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Command and Scripting Interpreter: JavaScript

Command and Scripting Interpreter: PowerShell

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Checks computer location settings

Family: Remcos

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/3d86eb5dce3a7b3e6d76449da7d75e974e43c5ed6a894554d137f93073cea1ee

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:	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_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:	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:	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 3d86eb5dce3a7b3e6d76449da7d75e974e43c5ed6a894554d137f93073cea1ee

(this sample)

URLhaus

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

Delivery method

Distributed via web download

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