MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f86c8270277c5a7e0213bd9b864d39602f4e46364323b18ea931eba3573ac2aa. 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 20 File information Comments

SHA256 hash:	f86c8270277c5a7e0213bd9b864d39602f4e46364323b18ea931eba3573ac2aa
SHA3-384 hash:	042e2eb37868b2f238ae0551c01a718462adc5d2cdbe2a5cba14175ef8b454555499b94e1d1c4e4e8f790cd56658d4d2
SHA1 hash:	5585f4488b599d5ea566911aba33eb74015f7a49
MD5 hash:	6d5b965980ed7e345e5951442bb9980c
humanhash:	bluebird-orange-foxtrot-stream
File name:	25OF8801.pif
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	963'096 bytes
First seen:	2025-05-12 09:07:26 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep	12288:7Bk9dcGrMX5JEK+xgsBFa8fnSKRS2BtbKOXRN5f1oHEC3555AEHz7jOUpszOGIZ:dqmX5JERrvJbnbKaRNp1okCffseZ
TLSH	T1522512452E2ADA43E9A717B40261F77123F86E8E9921C603EFE9FEEBB815F154504343
TrID	69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.0% (.EXE) Win64 Executable (generic) (10522/11/4) 6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.2% (.EXE) Win32 Executable (generic) (4504/4/1) 1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika	pebin
dhash icon	2062616969e86868 (9 x Formbook, 4 x AgentTesla, 3 x MassLogger)
Reporter	lowmal3
Tags:	exe RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

444

Origin country :

Vendor Threat Intelligence

Detection(s):

SecuriteInfo.com.Trojan.PackedNET.3223.4880.26313.UNOFFICIAL

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6821bbbbe16384d6a703c30b

Tags:

injection shell micro

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a process with a hidden window

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Connection attempt

Sending a custom TCP request

DNS request

Sending an HTTP GET request

Adding an exclusion to Microsoft Defender

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

masquerade obfuscated overlay packed packed packer_detected vbnet

Link:

https://www.filescan.io/uploads/6821ba84d95f3e34e966e1e7/reports/b4c99906-f80b-43d3-aa82-200ef9cc0edd/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/f86c8270277c5a7e0213bd9b864d39602f4e46364323b18ea931eba3573ac2aa

Malware family:

REMCOS

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/ac6d9049-287a-41e9-abf0-c90314edf6a0

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1687701

Signature

.NET source code contains potential unpacker

Adds a directory exclusion to Windows Defender

Antivirus / Scanner detection for submitted sample

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

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:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/f86c8270277c5a7e0213bd9b864d39602f4e46364323b18ea931eba3573ac2aa

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/f86c8270277c5a7e0213bd9b864d39602f4e46364323b18ea931eba3573ac2aa/

Threat name:

Win32.Trojan.MassLogger

Status:

Malicious

First seen:

2025-05-12 09:08:22 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

29 of 37 (78.38%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=7bwie4bhprnh4aqtxwnymtjzmaxu4rrwimr3ddvjghv2gvz2ykva._file

Verdict:

malicious

Label(s):

unc_loader_037

remcos

Similar samples:

error

RemcosRAT

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:remotehost discovery execution rat

Link:

https://tria.ge/reports/250512-k32v4shn5y/

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

Checks computer location settings

Command and Scripting Interpreter: PowerShell

Remcos

Remcos family

Malware Config

C2 Extraction:

196.251.86.199:2404

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/a5533493-ffdd-44a9-a9f2-3d3eeb581b90

Unpacked files

SH256 hash:

f86c8270277c5a7e0213bd9b864d39602f4e46364323b18ea931eba3573ac2aa

MD5 hash:

6d5b965980ed7e345e5951442bb9980c

SHA1 hash:

5585f4488b599d5ea566911aba33eb74015f7a49

Link:

https://www.unpac.me/results/ffca17b4-503f-4675-93e0-128a4811031f/

SH256 hash:

90f0b83a345f5f5aad12fa351cbaa4b0d398cc8e7926822fca6fb881f0958d34

MD5 hash:

5fadfc70e41d648540293199fee1750a

SHA1 hash:

16a8faac86cace41a0ea5baaa9375c72507ae1a6

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/ffca17b4-503f-4675-93e0-128a4811031f/

Parent samples :

f86c8270277c5a7e0213bd9b864d39602f4e46364323b18ea931eba3573ac2aa
4761247b5a6ba9f9b8d803b03db17826024eb4177d032a00383350943ec7e6de

SH256 hash:

b242ad7fad9723e769340e8d6de52706a504dc76d5ad905d4be8a78c5797e7af

MD5 hash:

2aa140d7e89a34db2261ea546d554348

SHA1 hash:

7bca5d640578d47445ee6933fbeaac6cda78eb10

Detections:

INDICATOR_EXE_Packed_SmartAssembly

Link:

https://www.unpac.me/results/ffca17b4-503f-4675-93e0-128a4811031f/

Parent samples :
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SH256 hash:

8d63a5f06e5384d244a2975a343c530a3fdf4fa92de16ffbd32d823bac0207e5

MD5 hash:

25d26cfcb0769ff3f58af3dc948b956a

SHA1 hash:

9b129dbacba0956c90d4c45dfbb5fd7682f2ba7f

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/ffca17b4-503f-4675-93e0-128a4811031f/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/f86c8270277c/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/f86c8270277c5a7e0213bd9b864d39602f4e46364323b18ea931eba3573ac2aa

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

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:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

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:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	pe_imphash Create hunting rule

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_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:	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.

Malspam

RemcosRAT

exe f86c8270277c5a7e0213bd9b864d39602f4e46364323b18ea931eba3573ac2aa

(this sample)

Delivery method

Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

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