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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4183c4de3b0c3bf7276307c8efbaace800af9633722c055164dc7e9249d43eda. 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 YARA 19 File information Comments

SHA256 hash: 4183c4de3b0c3bf7276307c8efbaace800af9633722c055164dc7e9249d43eda
SHA3-384 hash: f9c7472db4fb23b0ef3f3e9f49c265fb70de76854d571e088d69f21a0f939f98b81ce59fa371dd33ab22357666385ae7
SHA1 hash: 369d03aca7b6113411d8b205faa2f040e8f57fa5
MD5 hash: 5d1dc8ae5a271c4fa047178a52fff817
humanhash: cat-nevada-ack-crazy
File name:almam_gerekiyor.vbs
Download: download sample
Signature RemcosRAT
File size:1'014'242 bytes
First seen:2026-05-20 17:02:32 UTC
Last seen:2026-05-20 17:35:50 UTC
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 12288:VNG0Mb4SotweRQ4SJL5Bd042ZILm6noRiMqaoyY0VNwPKdOinrr/lEa+matGpHzk:a0Q22B2Z8nKKynHwPYrr/qQfGMiX/rR
Threatray 187 similar samples on MalwareBazaar
TLSH T17E259BA9441F789E76E521E8F0F5BD0DBA8C0E86CD70021CA54EC6D31E95EED8E6631C
Magika vba
Reporter TomU
Tags:RemcosRAT vbs

Intelligence


File Origin
# of uploads :
2
# of downloads :
40
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
99.1%
Tags:
obfuscate xtreme shell
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
aes base64 crypto evasive obfuscated powershell
Verdict:
Malicious
File Type:
text
First seen:
2025-10-31T07:21:00Z UTC
Last seen:
2026-01-22T05:09:00Z UTC
Hits:
~100
Gathering data
Threat name:
Script-WScript.Backdoor.Remcos
Status:
Malicious
First seen:
2025-10-31 15:15:09 UTC
File Type:
Text
AV detection:
17 of 36 (47.22%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:donutloader family:remcos botnet:remotehost execution loader rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Drops startup file
Badlisted process makes network request
Detects DonutLoader
Family: DonutLoader
Family: Remcos
Process spawned unexpected child process
Malware Config
C2 Extraction:
31.40.204.127:1671
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:CP_Script_Inject_Detector
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Disable_Defender
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:FreddyBearDropper
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:pe_detect_tls_callbacks
Rule name:pe_no_import_table
Description:Detect pe file that no import table
Rule name:REMCOS_RAT_variants
Rule name:Remcos_unpacked_PulseIntel
Author:PulseIntel
Description:Remcos Payload
Rule name:Sus_CMD_Powershell_Usage
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
Author:vietdx.mb
Rule name:ThreadControl__Context
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
Rule name:win_remcos_rat_unpacked
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Author:Matthew @ Embee_Research

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

RemcosRAT

Visual Basic Script (vbs) vbs 4183c4de3b0c3bf7276307c8efbaace800af9633722c055164dc7e9249d43eda

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments