MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91c06f8aa57007ba8b3b468c669aa32f7e293a3bb325c46badf18236bd10712c. 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: 22

Intelligence 22 IOCs 1 YARA 30 File information Comments

SHA256 hash:	91c06f8aa57007ba8b3b468c669aa32f7e293a3bb325c46badf18236bd10712c
SHA3-384 hash:	14c2e584aff51d5797690df9499a3057fd9bc595543fb466f3dd06537bac216652368407f767f41e60111e9e3066bcf9
SHA1 hash:	9776a394028e0c85233d00386af0c4a5bdf94fca
MD5 hash:	bbf09e775a622417e971ec74e93a16a7
humanhash:	tennis-artist-kansas-blue
File name:	91c06f8aa57007ba8b3b468c669aa32f7e293a3bb325c.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	493'568 bytes
First seen:	2025-10-23 22:45:11 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	e77512f955eaf60ccff45e02d69234de (139 x RemcosRAT)
ssdeep	12288:Np1P6FDF/ZGU/hvJYCxvNe6VFOUsvZEWS:71P6pF/ZF/Vy6VFOfZ1
TLSH	T102A4BF01F6C2C0B2D5761430042AEB75CFBDBD212835997BA3D62D67FE70252E6397A2
TrID	32.2% (.EXE) Win64 Executable (generic) (10522/11/4) 20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 15.4% (.EXE) Win16 NE executable (generic) (5038/12/1) 13.7% (.EXE) Win32 Executable (generic) (4504/4/1) 6.2% (.EXE) OS/2 Executable (generic) (2029/13)
Magika	pebin
Reporter	abuse_ch
Tags:	exe RAT RemcosRAT

abuse_ch

RemcosRAT C2:
172.245.246.80:9090

Indicators Of Compromise (IOCs)

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

IOC	ThreatFox Reference
172.245.246.80:9090	https://threatfox.abuse.ch/ioc/1618576/

Intelligence

File Origin

# of uploads :

# of downloads :

161

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

91c06f8aa57007ba8b3b468c669aa32f7e293a3bb325c46badf18236bd10712c.exe

Verdict:

Malicious activity

Analysis date:

2025-10-23 21:12:25 UTC

Tags:

remcos rat

Link:

https://app.any.run/tasks/ad474f20-a479-4d1e-bf93-ea33ae3cf390

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/33995/

Detection(s):

Win.Trojan.Remcos-9841897-0

Win.Trojan.Remcos-10002580-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68fa9a396c859164aa63b6e5

Tags:

ransomware dropper remcos keylog

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Setting a keyboard event handler

Connection attempt

Sending a custom TCP request

Unauthorized injection to a recently created process

Restart of the analyzed sample

Reading critical registry keys

Creating a file

Creating a file in the %temp% directory

Launching a service

DNS request

Stealing user critical data

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug cmd config-extracted crypto evasive exploit explorer fingerprint keylogger lolbin microsoft_visual_cc packed rat rat remcos remcos windows

Link:

https://www.filescan.io/uploads/68fab0253a79800405f3d9d2/reports/89c818d5-30d0-4e7b-9890-5a72904d9619/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/91c06f8aa57007ba8b3b468c669aa32f7e293a3bb325c46badf18236bd10712c

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-10-23T03:39:00Z UTC

Last seen:

2025-10-24T02:25:00Z UTC

Hits:

~10

Detections:

Trojan-Dropper.Win32.Injector PDM:Trojan.Win32.Generic Trojan-PSW.Win32.Stealer.sb HEUR:Backdoor.Win32.Remcos.gen Backdoor.Win32.Remcos.f Trojan-PSW.Win32.Greedy.sb Backdoor.Remcos.TCP.C&C Trojan-Spy.Win32.Xegumumune.sbc Backdoor.Win32.Remcos.sb Backdoor.Win32.Remcos.e VHO:Backdoor.Win32.Convagent.gen

Link:

https://opentip.kaspersky.com/91c06f8aa57007ba8b3b468c669aa32f7e293a3bb325c46badf18236bd10712c/results?tab=lookup

Malware family:

REMCOS

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/31a826d4-7880-4c4e-8363-5a232a00a684

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1801002

Signature

Antivirus / Scanner detection for submitted sample

C2 URLs / IPs found in malware configuration

Contains functionality to bypass UAC (CMSTPLUA)

Contains functionality to inject code into remote processes

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

Delayed program exit found

Detected Remcos RAT

Found malware configuration

Installs a global keyboard hook

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Maps a DLL or memory area into another process

Multi AV Scanner detection for submitted file

Sigma detected: Remcos

Suricata IDS alerts for network traffic

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Instant Messenger accounts or passwords

Tries to steal Mail credentials (via file / registry access)

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Yara detected WebBrowserPassView password recovery tool

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/91c06f8aa57007ba8b3b468c669aa32f7e293a3bb325c46badf18236bd10712c

Gathering data

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/91c06f8aa57007ba8b3b468c669aa32f7e293a3bb325c46badf18236bd10712c/

Verdict:

Malicious

Threat:

Family.REMCOS

Link:

https://tip.neiki.dev/file/91c06f8aa57007ba8b3b468c669aa32f7e293a3bb325c46badf18236bd10712c

Threat name:

Win32.Backdoor.Remcos

Status:

Malicious

First seen:

2025-10-23 21:12:27 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

32 of 37 (86.49%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=shag7cvfoad3vcz3i2ggngvdf57csor3wms4i25n6gbdnpiqoewa._file

Verdict:

malicious

Label(s):

nirsoft

remcos

admintool_mailpassview

Similar samples:

error

RemcosRAT

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:remotehost collection discovery spyware stealer

Link:

https://tria.ge/reports/251023-2pvy3stpdq/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Accesses Microsoft Outlook accounts

Reads user/profile data of web browsers

Detected Nirsoft tools

NirSoft MailPassView

NirSoft WebBrowserPassView

Malware Config

C2 Extraction:

172.245.246.80:9090

Verdict:

Malicious

Tags:

rat remcos Win.Trojan.Remcos-9841897-0 Remcos

YARA:

malware_windows_remcos_rat REMCOS_RAT_variants Remcos_Payload win_remcos_rat_unpacked Windows_Trojan_Remcos_b296e965 MAL_EXE_Remcos_RAT_Jul_22 Remcos

Link:

https://app.threat.zone/submission/48801e0b-3add-46c6-9a44-3cf7f54f53eb

Unpacked files

SH256 hash:

91c06f8aa57007ba8b3b468c669aa32f7e293a3bb325c46badf18236bd10712c

MD5 hash:

bbf09e775a622417e971ec74e93a16a7

SHA1 hash:

9776a394028e0c85233d00386af0c4a5bdf94fca

Detections:

win_remcos_w0

win_remcos_auto

Remcos

Link:

https://www.unpac.me/results/79d44105-4563-4645-9a99-95f90ab82782/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/91c06f8aa570/report/overview.html

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

Threat name:

Remcos

Score:

0.90

Link:

https://yomi.yoroi.company/submissions/91c06f8aa57007ba8b3b468c669aa32f7e293a3bb325c46badf18236bd10712c

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:	BLOWFISH_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for Blowfish constants

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:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

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:	iexplorer_remcos Create hunting rule
Author:	iam-py-test
Description:	Detect iexplorer being taken over by Remcos

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_References_Confidential_Data_Store Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many email and collaboration clients. Observed in information stealers

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:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	nirsoft_v1 Create hunting rule
Author:	RandomMalware

Rule name:	pe_detect_tls_callbacks 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:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

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/33995/

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