MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 77a9f1e83822eff548e6e5590e62a4d1cea5f152b9a2d414dcbdb451b5053a62. 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 27 File information Comments

SHA256 hash:	77a9f1e83822eff548e6e5590e62a4d1cea5f152b9a2d414dcbdb451b5053a62
SHA3-384 hash:	609e3cd750b050780216cc80b27c6434ca12ae6ad20c6ef3cb7de6d9ea5e8d962941ac57df9071e5087307a3244842f2
SHA1 hash:	e965adeac77e64ad55ee5e1375558734b62af1da
MD5 hash:	c43ffe98a9eae49b941b11b58f84e695
humanhash:	sink-asparagus-beer-juliet
File name:	Banco de la Nación_Copia de Pago.pdf.vbs
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	1'171'960 bytes
First seen:	2026-10-27 06:40:06 UTC
Last seen:	Never
File type:	vbs
MIME type:	text/plain
ssdeep	24576:+Bvd4dp/Y67svEKoCSc0ZvqClkYTIp31XliMWr+JyNNqVn:+BvdmiCCb0ZWFO7qVn
TLSH	T1CA4501304D8E7EA5CABA4608D0FB130F4ED0BD4715776D89DE132D416B967C0E12FAAA
Magika	txt
Reporter	abuse_ch
Tags:	RAT RemcosRAT vbs

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/95374/

Detection(s):

Sanesecurity.Malware.26270.JsHeur.UNOFFICIAL

Sanesecurity.Malware.30450.JsHeur.ExeObj.UNOFFICIAL

SecuriteInfo.com.Generic-EXE.UNOFFICIAL

Verdict:

Malicious

Score:

97.4%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6ae0475e49621540087bde88

Tags:

autorun cobalt

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

base64 dropper evasive evasive explorer lolbin masquerade obfuscated obfuscated ping

Link:

https://www.filescan.io/uploads/6ae04758c8593fe0f6b7f2eb/reports/fb9759f4-c755-4b1d-9fb9-6cf4e0876cee/overview

Verdict:

Malicious

Labled as:

GT:VB.Dropper.2

Link:

https://www.hybrid-analysis.com/sample/77a9f1e83822eff548e6e5590e62a4d1cea5f152b9a2d414dcbdb451b5053a62

Verdict:

Malicious

File Type:

vbs

First seen:

2026-10-26T14:33:00Z UTC

Last seen:

2026-10-27T08:01:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/77a9f1e83822eff548e6e5590e62a4d1cea5f152b9a2d414dcbdb451b5053a62/results?tab=lookup

Result

Threat name:

Remcos

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1992335

Signature

Antivirus detection for dropped file

Antivirus detection for URL or domain

Benign windows process drops PE files

C2 URLs / IPs found in malware configuration

Contains functionality to bypass UAC (CMSTPLUA)

Contains functionality to inject threads in other processes

Contains functionality to steal Internet Explorer form passwords

Detected Remcos RAT

Found malware configuration

Injects code into the Windows Explorer (explorer.exe)

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Sigma detected: Remcos

Sigma detected: WScript or CScript Dropper

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)

Uses an obfuscated file name to hide its real file extension (double extension)

Uses ping.exe to check the status of other devices and networks

Uses ping.exe to sleep

VBScript performs obfuscated calls to suspicious functions

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

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

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

77%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/77a9f1e83822eff548e6e5590e62a4d1cea5f152b9a2d414dcbdb451b5053a62

Verdict:

Malware

YARA:

2 match(es)

Tags:

Base64 Block Base64 Payload COM Behavior Trace Contains Base64 Block DeObfuscated Executable Managed .NET Obfuscated PE (Portable Executable) PE Memory-Mapped (Dump) Scripting.FileSystemObject SOS: 0.21 T1027 T1059 T1059.005 VBScript WScript.Shell

Link:

https://app.malva.re/file/c43ffe98a9eae49b941b11b58f84e695

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/77a9f1e83822eff548e6e5590e62a4d1cea5f152b9a2d414dcbdb451b5053a62/

Threat name:

ByteCode-MSIL.Trojan.Generic

Status:

Suspicious

First seen:

2026-10-27 01:09:45 UTC

AV detection:

9 of 38 (23.68%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=o6u7d2byelx7kshg4vmq4yve2hhkl4ksxgrnifg4xw2fdnifhjra._file

Verdict:

malicious

Label(s):

Remcos

Link:

https://reports.threatray.com/f48400ec-81dd-4b79-a23b-ad977227cbd0

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:remotehost collection discovery execution persistence privilege_escalation rat spyware stealer

Link:

https://tria.ge/reports/261027-hfee7a11es/

Behaviour

Modifies registry class

Runs ping.exe

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

outlook_office_path

Enumerates physical storage devices

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

System Network Configuration Discovery: Internet Connection Discovery

Drops file in Windows directory

Executes a VBScript file via the Windows Script Host.

Accesses Microsoft Outlook profiles

Adds Run key to start application

Checks installed software on the system

Checks computer location settings

Creates a file in the Startup directory

Executes dropped EXE

Reads user/profile data of web browsers

Family: Remcos

Malware Config

C2 Extraction:

216.9.225.162:9746
gotomuhammed.hopto.org:9746

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

Threat name:

Suspicious File

Score:

0.35

Link:

https://yomi.yoroi.company/submissions/77a9f1e83822eff548e6e5590e62a4d1cea5f152b9a2d414dcbdb451b5053a62

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_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_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_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:	TigerRAT_pe_yaraify Create hunting rule
Author:	hunts-yara-code
Description:	YARAify-tightened byte rule from 9 sample(s) -- VERIFY hits

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_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_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.

Cape

https://www.capesandbox.com/analysis/95374/

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