MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cc1b38c4aa79c03c777b0d99c9ae67fef380572e36f0744d110c18137ce9f3dd. 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: 21

Intelligence 21 IOCs 1 YARA 29 File information Comments

SHA256 hash:	cc1b38c4aa79c03c777b0d99c9ae67fef380572e36f0744d110c18137ce9f3dd
SHA3-384 hash:	faf5cd62fe147216883fdf43bc9d237613239c22b739b8894877844cc0442bccc9bb3d9def4476eae3b26357584c182c
SHA1 hash:	813c99c43390354b1084ee985bbe790ac026f561
MD5 hash:	f65479db87bbe5b7e2ade5e969481df5
humanhash:	alpha-iowa-william-pasta
File name:	f65479db87bbe5b7e2ade5e969481df5.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	966'664 bytes
First seen:	2025-08-24 12:45:07 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep	12288:bhUk3obxbDyHDToRcKKdCTlfJx5QtG6Y9XnqazLIh15dNMqHIRsf5han2PkR:bYbxPWgxK8XQt09XqB15dmqHIwU
Threatray	1'350 similar samples on MalwareBazaar
TLSH	T1DF251255479AE201E2F67F7428B1D3B557767D8A7931C31B4AE4ACCF3CA2F40A824362
TrID	71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.2% (.EXE) Win64 Executable (generic) (10522/11/4) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.3% (.EXE) Win32 Executable (generic) (4504/4/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika	pebin
Reporter	abuse_ch
Tags:	exe RAT RemcosRAT

abuse_ch

RemcosRAT C2:
196.251.87.11:5432

Indicators Of Compromise (IOCs)

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

IOC	ThreatFox Reference
196.251.87.11:5432	https://threatfox.abuse.ch/ioc/1573459/

Intelligence

File Origin

# of uploads :

# of downloads :

112

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

f65479db87bbe5b7e2ade5e969481df5.exe

Verdict:

Malicious activity

Analysis date:

2025-08-24 12:47:38 UTC

Tags:

remcos rat netreactor stealer mpress

Link:

https://app.any.run/tasks/8ffa7237-01ee-417b-85c5-0688cd613fdc

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/23240/

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68ab0996e9d9dbcfd96d91b9

Tags:

virus spawn shell

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a process with a hidden window

Launching a process

Creating a file

Сreating synchronization primitives

Connection attempt

Sending a custom TCP request

Creating a file in the %temp% directory

DNS request

Sending an HTTP GET request

Reading critical registry keys

Launching a service

Forced shutdown of a system process

Stealing user critical data

Adding an exclusion to Microsoft Defender

Unauthorized injection to a system process

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

base64 bitmap config-extracted evasive expired-cert invalid-signature lolbin msbuild obfuscated packed packed packed rat rat reconnaissance regsvcs remcos remcos rezer0 roboski schtasks signed stego vbc vbnet windows

Link:

https://www.filescan.io/uploads/68ab098f7137d6845839f976/reports/a1b4dd4b-9a61-4617-ad8f-ab0a094c6dc7/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/cc1b38c4aa79c03c777b0d99c9ae67fef380572e36f0744d110c18137ce9f3dd

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-08-21T03:59:00Z UTC

Last seen:

2025-08-21T03:59:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/cc1b38c4aa79c03c777b0d99c9ae67fef380572e36f0744d110c18137ce9f3dd/results?tab=lookup

Malware family:

REMCOS

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/34135ae9-bf6e-49c0-a78b-04f41df7a200

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1763928

Signature

.NET source code contains method to dynamically call methods (often used by packers)

.NET source code contains potential unpacker

Adds a directory exclusion to Windows Defender

C2 URLs / IPs found in malware configuration

Contains functionality to bypass UAC (CMSTPLUA)

Contains functionality to register a low level keyboard hook

Contains functionality to steal Chrome passwords or cookies

Contains functionality to steal Firefox passwords or cookies

Contains functionalty to change the wallpaper

Detected Remcos RAT

Found malware configuration

Joe Sandbox ML detected suspicious sample

Loading BitLocker PowerShell Module

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Sigma detected: Remcos

Sigma detected: Silenttrinity Stager Msbuild Activity

Suricata IDS alerts for network traffic

Yara detected AntiVM3

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

97%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/cc1b38c4aa79c03c777b0d99c9ae67fef380572e36f0744d110c18137ce9f3dd

Verdict:

inconclusive

YARA:

10 match(es)

Tags:

.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.24 Win 32 Exe x86

Link:

https://app.malva.re/file/f65479db87bbe5b7e2ade5e969481df5

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/cc1b38c4aa79c03c777b0d99c9ae67fef380572e36f0744d110c18137ce9f3dd/

Verdict:

Malicious

Threat:

Family.REMCOS

Link:

https://tip.neiki.dev/file/cc1b38c4aa79c03c777b0d99c9ae67fef380572e36f0744d110c18137ce9f3dd

Threat name:

ByteCode-MSIL.Trojan.XWorm

Status:

Malicious

First seen:

2025-08-20 20:15:14 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

20 of 24 (83.33%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=zqntrrfkphady533bwm4tlth73zyavzog3yhitirbqmbg7hj6poq._file

Verdict:

malicious

Label(s):

remcos

unc_loader_037

nirsoft

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:remotehost collection defense_evasion discovery execution rat

Link:

https://tria.ge/reports/250824-pzkvmsak41/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Accesses Microsoft Outlook accounts

Checks computer location settings

Command and Scripting Interpreter: PowerShell

Modifies trusted root certificate store through registry

Detected Nirsoft tools

NirSoft MailPassView

NirSoft WebBrowserPassView

Remcos

Remcos family

Malware Config

C2 Extraction:

196.251.87.11:5432

Verdict:

Malicious

Tags:

Remcos

YARA:

n/a

Link:

https://app.threat.zone/submission/7dedc527-759d-4c41-990d-4ae63a5990aa

Unpacked files

SH256 hash:

cc1b38c4aa79c03c777b0d99c9ae67fef380572e36f0744d110c18137ce9f3dd

MD5 hash:

f65479db87bbe5b7e2ade5e969481df5

SHA1 hash:

813c99c43390354b1084ee985bbe790ac026f561

Link:

https://www.unpac.me/results/de53907c-c6a9-4bbc-a150-93f8f75d901c/

SH256 hash:

83cbe7ff73fb88e6a1d924f26a9cc0999c4e659000a0991ad64e4345099cba45

MD5 hash:

fa7b9018518c458e8c3077c8a2c0cda0

SHA1 hash:

0aa19d31f1030eaa48251ad316caa6d08fbe0afb

Detections:

win_remcos_w0

win_remcos_auto

Remcos

malware_windows_remcos_rat

win_remcos_rat_unpacked

INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Link:

https://www.unpac.me/results/de53907c-c6a9-4bbc-a150-93f8f75d901c/

SH256 hash:

305742d387f456d2e808559854251d616d6679621d01291f68ebd36e2c4694e5

MD5 hash:

5ed91ec260d6db2af9e654d763a6621a

SHA1 hash:

34033a316767020bb2ab4d291401a05f1013990b

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/de53907c-c6a9-4bbc-a150-93f8f75d901c/

SH256 hash:

79a5aaac2b0b3ed87c0b5e6ad0522823e813a266743a34a9cecc63e6c9d7ab14

MD5 hash:

2d35a6486c5c5acd42466f87ba0df509

SHA1 hash:

a188bec4d270043b705f0918c8e5d8b4daa94ed1

Detections:

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/de53907c-c6a9-4bbc-a150-93f8f75d901c/

Parent samples :
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Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/cc1b38c4aa79/report/overview.html

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/cc1b38c4aa79c03c777b0d99c9ae67fef380572e36f0744d110c18137ce9f3dd

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_AllMal_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication

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_EXE_Packed_MPress Create hunting rule
Author:	ditekSHen
Description:	Detects executables built or packed with MPress PE compressor

Rule name:	INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438 Create hunting rule
Author:	ditekSHen
Description:	Detects executables signed with stolen, revoked or invalid certificates

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:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	pe_imphash Create hunting rule

Rule name:	Remcos Create hunting rule
Author:	kevoreilly
Description:	Remcos Payload

Rule name:	remcos_ Create hunting rule
Author:	Michelle Khalil
Description:	This rule detects unpacked remcos malware samples.

Rule name:	REMCOS_RAT_variants Create hunting rule

Rule name:	Remcos_unpacked_PulseIntel Create hunting rule
Author:	PulseIntel
Description:	Remcos Payload

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

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:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

Rule name:	TeslaCryptPackedMalware Create hunting rule

Rule name:	ThreadControl__Context Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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.

Cape

https://www.capesandbox.com/analysis/23240/

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