MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a59fd4f5ff39047a9e026201b31fb9b1ccfa273be36ea0bf093f3b4c1098a1cc. 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

QuasarRAT

Vendor detections: 19

Intelligence 19 IOCs YARA 39 File information Comments 1

SHA256 hash:	a59fd4f5ff39047a9e026201b31fb9b1ccfa273be36ea0bf093f3b4c1098a1cc
SHA3-384 hash:	78764e2ed018e68a2c2980a9ac4989c8f9f13b75abfbbae3c186326b6ccbf8acd1ba6f41757f44e8cc3428940b70e117
SHA1 hash:	d761391faacb0d270f38fa79f51923241058aef2
MD5 hash:	a0af5a032d77362b9ba34192e1d8d3df
humanhash:	oklahoma-hawaii-red-one
File name:	a0af5a032d77362b9ba34192e1d8d3df.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	3'557'888 bytes
First seen:	2026-09-29 08:12:47 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (49'272 x AgentTesla, 20'616 x Formbook, 12'394 x SnakeKeylogger)
ssdeep	49152:LSPgD6crSazX8zbi5/V1OhJ4pGHOD9cgIXqQO:LSPU6crqhJlO
TLSH	T18FF5AE05F7981E36C55F9A7EA43244166670F44A2313E7DF3690E7BC6E523C08E3AB92
TrID	60.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 13.7% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 5.4% (.EXE) Win64 Executable (generic) (6522/11/2) 4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika	pebin
Reporter	abuse_ch
Tags:	exe QuasarRAT RAT

Intelligence

File Origin

# of uploads :

# of downloads :

216

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

QuasarRAT

Details

Link:

https://research.acce.ciphertechsolutions.com/results/cac8c142-ce86-4ffd-91eb-48dadb0a475a/

Malware family:

quasar

ID:

File name:

exe

Verdict:

Malicious activity

Analysis date:

2026-09-29 08:16:44 UTC

Tags:

auto-reg evasion rat purehvnc quasar remote generic stealer

Link:

https://app.any.run/tasks/b07d4f45-224b-441c-ba97-613c1c6ae31f

Note:

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

Detection:

QuasarRAT

Link:

https://www.capesandbox.com/analysis/89621/

Detection(s):

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL

Win.Malware.Generic-9883083-0

Win.Packed.Downeks-6898097-0

YARA.DITEKSHEN_MALWARE_Win_Quasarstealer.UNOFFICIAL

YARA.SIGNATURE_BASE_MAL_Quasarrat_May19_1.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6ac0bbac4e97199d5892c37a

Tags:

infosteal autorun quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a file in the %temp% subdirectories

Creating a window

Сreating synchronization primitives

Creating a file in the %AppData% subdirectories

Enabling the 'hidden' option for recently created files

Creating a process from a recently created file

Creating a file

Deleting a recently created file

Replacing files

Connecting to a non-recommended domain

Connection attempt

Sending a custom TCP request

Setting a keyboard event handler

Searching for synchronization primitives

DNS request

Using the Windows Management Instrumentation requests

Running batch commands

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Unauthorized injection to a recently created process

Adding an exclusion to Microsoft Defender

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

adaptive-context anti-debug base64 config-extracted expand infostealer infostealer lolbin obfuscated obfuscated overlay packed privilege quasar quasarrat quasarrat reconnaissance stealer

Link:

https://www.filescan.io/uploads/6abb731d0dd4c2f9c05ba26f/reports/b9169c56-af7b-4463-a092-fd137563b5b3/overview

Verdict:

Malicious

Labled as:

MSIL.PasswordStealerA.Generic

Link:

https://www.hybrid-analysis.com/sample/a59fd4f5ff39047a9e026201b31fb9b1ccfa273be36ea0bf093f3b4c1098a1cc

Verdict:

Malicious

File Type:

exe x32

First seen:

2026-09-25T23:29:00Z UTC

Last seen:

2026-09-30T00:58:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/a59fd4f5ff39047a9e026201b31fb9b1ccfa273be36ea0bf093f3b4c1098a1cc/results?tab=lookup

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/bd5bb6b0-2663-49ab-9a4f-94b43f12b671

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1979348

Signature

Adds a directory exclusion to Windows Defender

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Found many strings related to Crypto-Wallets (likely being stolen)

Hides that the sample has been downloaded from the Internet (zone.identifier)

Installs a global keyboard hook

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Suricata IDS alerts for network traffic

Yara detected Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

69%

Verdict:

Susipicious

File Type:

Link:

https://malprob.io/report/a59fd4f5ff39047a9e026201b31fb9b1ccfa273be36ea0bf093f3b4c1098a1cc

Verdict:

inconclusive

YARA:

18 match(es)

Tags:

.Net Executable Managed .NET PE (Portable Executable) PE File Layout Win 32 Exe x86

Link:

https://app.malva.re/file/a0af5a032d77362b9ba34192e1d8d3df

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a59fd4f5ff39047a9e026201b31fb9b1ccfa273be36ea0bf093f3b4c1098a1cc/

Threat name:

ByteCode-MSIL.Backdoor.Quasar

Status:

Malicious

First seen:

2026-09-26 21:50:00 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

19 of 24 (79.17%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=uwp5j5p7hechvhqcmia3gh5zwhgpujz34nxkbpyjh45uyeeyuhga._file

Verdict:

malicious

Label(s):

QuasarRAT

Link:

https://reports.threatray.com/783100e7-6d47-451b-b1ad-2599d0b4143e

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar discovery execution persistence spyware stealer trojan

Link:

https://tria.ge/reports/260929-j4hyysga23/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Executes a command shell one-liner

Reads the TCP/IP host and domain name from the registry

Adds Run key to start application

Enumerates connected drives

Executes dropped EXE

Loads dropped DLL

Reads user/profile data of web browsers

Command and Scripting Interpreter: PowerShell

Family: Quasar RAT

Quasar payload

Unpacked files

SH256 hash:

a59fd4f5ff39047a9e026201b31fb9b1ccfa273be36ea0bf093f3b4c1098a1cc

MD5 hash:

a0af5a032d77362b9ba34192e1d8d3df

SHA1 hash:

d761391faacb0d270f38fa79f51923241058aef2

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/a291bb57-efb9-46dc-8cac-996b1741aa11/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a59fd4f5ff39/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:	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:	dcrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	dcrat_kingrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	dcrat_rkp Create hunting rule
Author:	jeFF0Falltrades
Description:	Detects DCRat payloads

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:	Detect_PowerShell_Obfuscation Create hunting rule
Author:	daniyyell
Description:	Detects obfuscated PowerShell commands commonly used in malicious scripts.

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:	grakate_stealer_nov_2021 Create hunting rule

Rule name:	HUNT_NET_Loader_ImagePixel_To_AssemblyLoad Create hunting rule
Author:	Anish Bogati
Description:	Hunting: .NET loader that reads pixel data from an embedded image, loads it as a .NET assembly, and runs it via reflection or late binding. Catches bitmap-steganography loaders.

Rule name:	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs Create hunting rule
Author:	ditekSHen
Description:	Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

Rule name:	INDICATOR_SUSPICIOUS_Binary_References_Browsers Create hunting rule
Author:	ditekSHen
Description:	Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Rule name:	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA Create hunting rule
Author:	ditekSHen
Description:	Detects Windows executables referencing non-Windows User-Agents

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_GENInfoStealer Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing common artifacts observed in infostealers

Rule name:	Lumma_Stealer_Detection Create hunting rule
Author:	ashizZz
Description:	Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:	https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/

Rule name:	Macos_Infostealer_Wallets_8e469ea0 Create hunting rule
Author:	Elastic Security

Rule name:	MALWARE_Win_QuasarStealer Create hunting rule
Author:	ditekshen
Description:	Detects Quasar infostealer

Rule name:	MAL_QuasarRAT_May19_1 Create hunting rule
Description:	Detects QuasarRAT malware

Rule name:	MAL_QuasarRAT_May19_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects QuasarRAT malware
Reference:	https://blog.ensilo.com/uncovering-new-activity-by-apt10

Rule name:	MAL_QuasarRAT_May19_1_RID2E1E Create hunting rule
Author:	Florian Roth
Description:	Detects QuasarRAT malware
Reference:	https://blog.ensilo.com/uncovering-new-activity-by-apt10

Rule name:	Multifamily_RAT_Detection Create hunting rule
Author:	Lucas Acha (https://www.lukeacha.com)
Description:	Generic detection for multiple RAT families, PUPs, packers and suspicious executables. NOTE: This rule may produce false positives. Updated May 2026 to reduce False Positives.

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

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

Rule name:	pe_imphash Create hunting rule

Rule name:	quasarrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	quasarrat_kingrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	RSharedStrings Create hunting rule
Author:	Katie Kleemola
Description:	identifiers for remote and gmremote

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:	telebot_framework Create hunting rule
Author:	vietdx.mb

Rule name:	testlumma Create hunting rule

Rule name:	TigerRAT_pe_yaraify Create hunting rule
Author:	hunts-yara-code
Description:	YARAify-tightened byte rule from 9 sample(s) -- VERIFY hits

Rule name:	Win_Clipboard_Clipper_Thengavar Create hunting rule
Author:	Thengavar
Description:	Detects malware manipulating the Windows clipboard for clipping or crypto stealing attacks

Rule name:	win_quasar_rat_client Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects strings present in Quasar Rat Samples.

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/89621/

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

commented on 2026-09-29 08:16:20 UTC

RAT King Parser (https://github.com/jeFF0Falltrades/rat_king_parser) Output:

{
"sha256": "a59fd4f5ff39047a9e026201b31fb9b1ccfa273be36ea0bf093f3b4c1098a1cc",
"yara_possible_family": "dcrat",
"key": "557d422a3e68bcd7af71c8ebdd340a8b97898d396616500361182eb813aeadc3",
"salt": "3a17c84f92e16bd0557cab28f3096e84da513f990cb774e62d881ac45bf0376c",
"config": {
"obfuscated_key_1": "1.4.1",
"obfuscated_key_2": "64.89.160.4:4782;",
"obfuscated_key_3": 3000,
"obfuscated_key_4": "APPLICATIONDATA",
"obfuscated_key_5": "Windows",
"obfuscated_key_6": "WindowsUpdate.exe",
"obfuscated_key_7": true,
"obfuscated_key_8": true,
"obfuscated_key_9": "0ae6bbad-34a7-4db6-a460-f635af238d08",
"obfuscated_key_10": "SystemHealthTray",
"obfuscated_key_11": true,
"obfuscated_key_12": true,
"obfuscated_key_13": "A6E6AA58BAC84E56B868F5F618EF227B75D7208E",
"obfuscated_key_14": "simple",
"obfuscated_key_15": "Security",
"obfuscated_key_16": "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",
"obfuscated_key_17": "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",
"obfuscated_key_18": true,
"obfuscated_key_19": true,
"obfuscated_key_20": "",
"obfuscated_key_21": "",
"obfuscated_key_22": true
}
}