MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ec597e6597d208829c1162c2b4079f04d5fe9ebf89fafa63fc97f6ffcd139d2f. 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: 17

Intelligence 17 IOCs YARA 33 File information Comments

SHA256 hash:	ec597e6597d208829c1162c2b4079f04d5fe9ebf89fafa63fc97f6ffcd139d2f
SHA3-384 hash:	4a90145f5e024b3fa21cffc3d9c128329ec09801bc283c8de13535b2a299e0127484f5184e5258a3776ba18edf21900f
SHA1 hash:	e38448b2d2e0a916a45d74ef541af175a2e75cfd
MD5 hash:	98c5bbc63f6f1ce8d619f8a00ad5796b
humanhash:	idaho-angel-timing-autumn
File name:	specification.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	1'449'984 bytes
First seen:	2026-04-07 09:14:44 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (49'235 x AgentTesla, 20'488 x Formbook, 12'372 x SnakeKeylogger)
ssdeep	24576:/Ye8+v9hRBQK5E9KhMF/AE8wR2g77azZkEgGpDKJ4e2SXS5c1DenwG4G0:AMvdOTztV77AaEuOe2+2I2x4G0
TLSH	T1346501603A0FE681F89D4F711965F67987263EE9B800D2525ED8BEEB7BF67023415302
TrID	73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 6.6% (.EXE) Win64 Executable (generic) (6522/11/2) 4.5% (.EXE) Win32 Executable (generic) (4504/4/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika	pebin
dhash icon	b270f0f0f0f070b2 (2 x RemcosRAT, 2 x AsyncRAT, 1 x Formbook)
Reporter	Ling
Tags:	exe remcos RemcosRAT

CNGaoLing

Remcos
IOC (Domain saralee1.duckdns.org) (IP 84.32.44.38)

Intelligence

File Origin

# of uploads :

# of downloads :

251

Origin country :

Vendor Threat Intelligence

Gathering data

Malware family:

remcos

ID:

File name:

specification.exe

Verdict:

Malicious activity

Analysis date:

2026-04-07 07:16:41 UTC

Tags:

rat remcos auto-startup susp-lnk

Link:

https://app.any.run/tasks/8942cead-9d23-452a-aa0b-2ee30c038caa

Note:

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

Detection:

Remcos

Link:

https://www.capesandbox.com/analysis/60694/

Detection(s):

SecuriteInfo.com.Trojan.Remcos.885.9441.26247.UNOFFICIAL

Verdict:

Malicious

Score:

90.2%

Link:

https://cyber-fortress.com/docs/result/index.php?id=69d4af5766ab6d001dcfc365

Tags:

backdoor autorun keylog word

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

DNS request

Creating a file in the %AppData% directory

Enabling the 'hidden' option for recently created files

Adding an access-denied ACE

Creating a file in the %temp% directory

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Сreating synchronization primitives

Setting a keyboard event handler

Connection attempt to an infection source

Query of malicious DNS domain

Sending a TCP request to an infection source

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

formbook packed remcos vbnet

Link:

https://www.filescan.io/uploads/69d4cb392346b9da57c4202a/reports/fe47512b-2852-49e0-b1dd-f122ed2e0204/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_90%

Link:

https://www.hybrid-analysis.com/sample/ec597e6597d208829c1162c2b4079f04d5fe9ebf89fafa63fc97f6ffcd139d2f

Verdict:

Malicious

File Type:

exe x32

First seen:

2026-04-07T03:46:00Z UTC

Last seen:

2026-04-08T02:04:00Z UTC

Hits:

~10

Detections:

PDM:Trojan.Win32.Generic HEUR:Backdoor.MSIL.Remcos.gen

Link:

https://opentip.kaspersky.com/ec597e6597d208829c1162c2b4079f04d5fe9ebf89fafa63fc97f6ffcd139d2f/results?tab=lookup

Malware family:

REMCOS

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/3df6d88d-596b-49da-88ab-fefcc2ecf41e

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/ec597e6597d208829c1162c2b4079f04d5fe9ebf89fafa63fc97f6ffcd139d2f

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/ec597e6597d208829c1162c2b4079f04d5fe9ebf89fafa63fc97f6ffcd139d2f/

Verdict:

Malicious

Threat:

Family.REMCOS

Link:

https://tip.neiki.dev/file/ec597e6597d208829c1162c2b4079f04d5fe9ebf89fafa63fc97f6ffcd139d2f

Threat name:

ByteCode-MSIL.Backdoor.Remcos

Status:

Malicious

First seen:

2026-04-07 07:17:10 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

16 of 24 (66.67%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=5rmx4zmx2ieifharmlblib47atk75hv7rh5puy74s73p7tittuxq._file

Verdict:

malicious

Label(s):

remcos

Similar samples:

error

RemcosRAT

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:remotehost collection credential_access defense_evasion discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/260407-k778pacz6r/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies data under HKEY_USERS

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System policy modification

Browser Information Discovery

Enumerates physical storage devices

System Location Discovery: System Language Discovery

System Time Discovery

Drops file in Program Files directory

Drops file in Windows directory

SmartAssembly .NET packer

Suspicious use of SetThreadContext

Accesses Microsoft Outlook accounts

Drops startup file

Loads dropped DLL

Reads user/profile data of web browsers

Uses browser remote debugging

Detected Nirsoft tools

Remcos

Remcos family

UAC bypass

Malware Config

C2 Extraction:

saralee1.duckdns.org:2444

Unpacked files

SH256 hash:

ec597e6597d208829c1162c2b4079f04d5fe9ebf89fafa63fc97f6ffcd139d2f

MD5 hash:

98c5bbc63f6f1ce8d619f8a00ad5796b

SHA1 hash:

e38448b2d2e0a916a45d74ef541af175a2e75cfd

Link:

https://www.unpac.me/results/9560abdd-752a-434d-b1e2-d79bc8606654/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/ec597e6597d2/report/overview.html

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:	Check_OutputDebugStringA_iat Create hunting rule

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:	DebuggerCheck__QueryInfo 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_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing SQL queries to confidential data stores. Observed in infostealers

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_imphash Create hunting rule

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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

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_All_Windows_PE_Malware Create hunting rule
Author:	DiegoAnalytics
Description:	Detects Windows PE malware of all types, avoids non-executables like .html

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:	TeslaCryptPackedMalware Create hunting rule

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

Rule name:	TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE Create hunting rule
Author:	CYFARE
Description:	Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:	https://cyfare.net/

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_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:	WIN_WebSocket_Base64_C2_20250726 Create hunting rule
Author:	dogsafetyforeverone
Description:	Detects configuration strings used by malware to specify WebSocket command-and-control endpoints inside Base64-encoded data. It looks for prefixes such as '#ws://' or '#wss://' that were found in QuasarRAT configuration data.

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.

Web download

RemcosRAT

exe ec597e6597d208829c1162c2b4079f04d5fe9ebf89fafa63fc97f6ffcd139d2f

(this sample)

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/60694/

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