MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c35b38ddab1c5d4da4a94baaf3b845e4d35f01f9522f1df8d7e8bbd8990ee8c2. 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: 10

Intelligence 10 IOCs 1 YARA 21 File information Comments

SHA256 hash:	c35b38ddab1c5d4da4a94baaf3b845e4d35f01f9522f1df8d7e8bbd8990ee8c2
SHA3-384 hash:	3e12274de8ec6b39ccfc22657d20a0d9bc0a50038adde6aeaf92cd2f29ea25f413633601de9c69862ebb406eda2a1252
SHA1 hash:	840f8db7a580bc08cbcdb51e57226e365123b966
MD5 hash:	c8a40ddae4510ece66d5c196da528db9
humanhash:	ten-apart-vermont-triple
File name:	August Due invoives payment advice 250826YHUJ.js
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	5'615'899 bytes
First seen:	2026-08-27 06:40:08 UTC
Last seen:	Never
File type:	js
MIME type:	text/plain
ssdeep	98304:VKaxLjWrVZ7icD6vVYZXqJOAwK6SrI5lIkusc04nJ5LCW/edNNq/JEto4Zp4idT5:VKasRZ7ZD6vV+qYAsaalescl5LujNqhu
TLSH	T15D46727D1BC299396536A7AEC236CD20F50D728316C5EB1A707DC21CBB64E175388AF2
Magika	javascript
Reporter	abuse_ch
Tags:	js RAT RemcosRAT

abuse_ch

RemcosRAT C2:
45.11.231.147:2420

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOC	ThreatFox Reference
45.11.231.147:2420	https://threatfox.abuse.ch/ioc/1889000/

Intelligence

File Origin

# of uploads :

# of downloads :

167

Origin country :

Vendor Threat Intelligence

No detections

Detection(s):

SecuriteInfo.com.Other.Malware-gen.63411832.UNOFFICIAL

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug downloader dropper evasive masquerade obfuscated obfuscated packed repaired

Link:

https://www.filescan.io/uploads/6a8fdbd5b49dd5eb74c16053/reports/6303e29b-92a7-48e8-9325-934611151fa1/overview

Verdict:

Malicious

Labled as:

JS/TrojanDropper.ModiLoader

Link:

https://www.hybrid-analysis.com/sample/c35b38ddab1c5d4da4a94baaf3b845e4d35f01f9522f1df8d7e8bbd8990ee8c2

Verdict:

Malicious

File Type:

First seen:

2026-08-27T03:39:00Z UTC

Last seen:

2026-08-28T04:56:00Z UTC

Hits:

~1000

Link:

https://opentip.kaspersky.com/c35b38ddab1c5d4da4a94baaf3b845e4d35f01f9522f1df8d7e8bbd8990ee8c2/results?tab=lookup

Result

Threat name:

Remcos, DonutLoader

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1964525

Signature

C2 URLs / IPs found in malware configuration

Contains functionality to inject threads in other processes

Contains functionality to steal Internet Explorer form passwords

Detected Remcos RAT

Found API chain indicative of debugger detection

Found direct / indirect Syscall (likely to bypass EDR)

Found malware configuration

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

Suricata IDS alerts for network traffic

Tries to detect sandboxes / dynamic malware analysis system (Installed program check)

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Mail credentials (via file registry)

Unusual module load detection (module proxying)

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

Yara detected DonutLoader

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Gathering data

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/c35b38ddab1c5d4da4a94baaf3b845e4d35f01f9522f1df8d7e8bbd8990ee8c2/

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=ynntrxnldrou3jfjjovphocf4tjv6apzkixr36gx5c55rgio5dba._file

Verdict:

malicious

Label(s):

DonutLoader

Remcos

Link:

https://reports.threatray.com/51c7a2cb-f3f9-41c5-8366-c641bb0b7a45

Result

Malware family:

remcos

Score:

10/10

Tags:

family:donutloader family:remcos defense_evasion execution loader rat suricata trojan

Link:

https://tria.ge/reports/260827-hfc75azgna/

Behaviour

Modifies registry class

Suspicious use of WriteProcessMemory

System policy modification

Command and Scripting Interpreter: JavaScript

Enumerates physical storage devices

Checks computer location settings

Executes dropped EXE

Detects DonutLoader

Family: DonutLoader

Family: Remcos

Suricata alert: REMCOS RAT Malware Inbound C2 Communication

Suricata alert: REMCOS RAT Malware Outbound C2 Communication

UAC bypass

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

Threat name:

Suspicious File

Score:

0.55

Link:

https://yomi.yoroi.company/submissions/c35b38ddab1c5d4da4a94baaf3b845e4d35f01f9522f1df8d7e8bbd8990ee8c2

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:	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:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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:	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_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.

No further information available

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