MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c3ba98565b219c4fe9a0bc2a10e6a5624133d92e8eaed9ec0c5e3be7ba2951ee. 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: 7

Intelligence 7 IOCs YARA 3 File information Comments

SHA256 hash:	c3ba98565b219c4fe9a0bc2a10e6a5624133d92e8eaed9ec0c5e3be7ba2951ee
SHA3-384 hash:	545ba2ad33ce59cf22c665bfd1a1247b73edbe5e28a08dca5cdfb0db235d9fe19f1ba944526d5368226bcc87878f6eec
SHA1 hash:	19afc68341e56f96f43336df998352cbe81a7941
MD5 hash:	bb929cd2b944da0f3cc029ddf2aa593b
humanhash:	california-video-mockingbird-ohio
File name:	Update.vbs
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	3'601'412 bytes
First seen:	2025-06-18 06:47:52 UTC
Last seen:	Never
File type:	vbs
MIME type:	text/plain
ssdeep	24576:uQzYskpOD7A3PeFHvLst7AILV05U5rTTFOKDu5UAXN2ESLT3jUnghyxy1hj0FHAr:us3G21sZ5VtFZOrUES7hWyU0FV/GG1d
TLSH	T1F7F5E0CFBD0D9A84885222FA68258552F2CC83E67301D7A2FD7CC451739A8F8D96B7D1
Magika	vba
Reporter	abuse_ch
Tags:	RemcosRAT vbs

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/9978/

Gathering data

Verdict:

Suspicious

Labled as:

Trojan.Script.Donoff

Link:

https://www.hybrid-analysis.com/sample/c3ba98565b219c4fe9a0bc2a10e6a5624133d92e8eaed9ec0c5e3be7ba2951ee

Result

Threat name:

n/a

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1717151

Signature

Bypasses PowerShell execution policy

Connects to a pastebin service (likely for C&C)

Found suspicious powershell code related to unpacking or dynamic code loading

Joe Sandbox ML detected suspicious sample

Multi AV Scanner detection for submitted file

Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)

Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)

Sigma detected: Base64 Encoded PowerShell Command Detected

Sigma detected: Malicious Base64 Encoded PowerShell Keywords in Command Lines

Sigma detected: Net WebClient Casing Anomalies

Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet

Sigma detected: PowerShell Base64 Encoded Reflective Assembly Load

Sigma detected: Script Initiated Connection to Non-Local Network

Sigma detected: Suspicious PowerShell Parameter Substring

Sigma detected: WScript or CScript Dropper

Suspicious execution chain found

Suspicious powershell command line found

System process connects to network (likely due to code injection or exploit)

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

Wscript starts Powershell (via cmd or directly)

Yara detected Powershell decode and execute

Yara detected Powershell download and execute

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Verdict:

inconclusive

YARA:

2 match(es)

Link:

https://app.malva.re/file/bb929cd2b944da0f3cc029ddf2aa593b

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c3ba98565b219c4fe9a0bc2a10e6a5624133d92e8eaed9ec0c5e3be7ba2951ee/

Threat name:

Script-WScript.Spyware.AsyncRAT

Status:

Malicious

First seen:

2025-06-18 06:50:50 UTC

File Type:

Text (VBS)

AV detection:

10 of 38 (26.32%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=yo5jqvs3egoe72naxqvbbzvfmjathwjor2xnt3amly56porjkhxa._file

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:tarrestaldo discovery execution rat

Link:

https://tria.ge/reports/250618-hlrmpsysez/

Behaviour

Script User-Agent

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Checks computer location settings

Blocklisted process makes network request

Command and Scripting Interpreter: PowerShell

Remcos

Remcos family

Malware Config

C2 Extraction:

updatedrvier.duckdns.org:3001

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

Threat name:

Malicious File

Score:

0.88

Link:

https://yomi.yoroi.company/submissions/c3ba98565b219c4fe9a0bc2a10e6a5624133d92e8eaed9ec0c5e3be7ba2951ee

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:	dependsonpythonailib Create hunting rule
Author:	Tim Brown
Description:	Hunts for dependencies on Python AI libraries

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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)