MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 af5b59d2c3af86ee2d97b9bb459dec7b83e5033cfc9b53fb319dbcdddb79e5d5. 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 31 File information Comments 1

SHA256 hash:	af5b59d2c3af86ee2d97b9bb459dec7b83e5033cfc9b53fb319dbcdddb79e5d5
SHA3-384 hash:	d393fb26532ad5acd339b659f46e7b73e04c31a6a90ced91bb681dfb6a0f782a88a6736e830080e0292af95b5e9ea603
SHA1 hash:	c23a83c1459ed3bbbf81885dad9b0f249a30cf3e
MD5 hash:	675a6bcf1161098f7fc8e65cf6b07ec8
humanhash:	lithium-winter-music-hotel
File name:	af5b59d2c3af86ee2d97b9bb459dec7b83e5033cfc9b53fb319dbcdddb79e5d5.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	3'265'536 bytes
First seen:	2026-10-11 05:02:10 UTC
Last seen:	Never
File type:	exe
MIME type:	application/vnd.microsoft.portable-executable
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (49'272 x AgentTesla, 20'612 x Formbook, 12'394 x SnakeKeylogger)
ssdeep	49152:2vUt62XlaSFNWPjljiFa2RoUYIfEUBqUoGdfgrTHHB72eh2NT:2vI62XlaSFNWPjljiFXRoUYIfEUb
TLSH	T131E55A543BF85E32E17BD6B3D5B0545263F0F82AF363EB0B6181677A1C93B4098426A7
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	whack_sh
Tags:	exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

205

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

QuasarRAT

Details

Link:

https://research.acce.ciphertechsolutions.com/results/bca47c8a-f10e-476e-a8e2-82f1dd652266/

Malware family:

quasar

ID:

File name:

exe

Verdict:

Malicious activity

Analysis date:

2026-10-11 05:06:55 UTC

Tags:

auto-reg quasar

Link:

https://app.any.run/tasks/e1dad075-bc1f-43cf-989c-14a43e9a440c

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/91400/

Detection(s):

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL

Win.Malware.Generic-9883083-0

Win.Malware.Msilheracles-9900242-0

Win.Packed.Downeks-6898097-0

YARA.DITEKSHEN_MALWARE_Win_Quasarstealer.UNOFFICIAL

YARA.SIGNATURE_BASE_MAL_Quasarrat_May19_1.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a file in the %AppData% subdirectories

Launching a process

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

active-directory anti-vm base64 certreq config-extracted crypto expand explorer fingerprint infostealer keylogger lolbin obfuscated obfuscated quasarrat quasarrat reconnaissance remoteaccesstool runonce schtasks stealer

Link:

https://www.filescan.io/uploads/6acb185bf9f6ea5324bebf8f/reports/08f3dc0c-fa69-4ee8-969f-513bb7fba2da/overview

Verdict:

Malicious

Labled as:

Trojan.Agent

Link:

https://www.hybrid-analysis.com/sample/af5b59d2c3af86ee2d97b9bb459dec7b83e5033cfc9b53fb319dbcdddb79e5d5

Verdict:

Malicious

File Type:

exe x32

First seen:

2026-10-11T02:01:00Z UTC

Last seen:

2026-10-12T18:10:00Z UTC

Hits:

~10

Detections:

HEUR:Trojan.MSIL.Quasar.gen HEUR:Trojan-Spy.MSIL.Agent.sb Trojan.Win32.Quasar.sb Trojan.MSIL.Quasar.a Trojan-PSW.Win32.Stealer.sb Trojan-PSW.MSIL.Agent.sb

Link:

https://opentip.kaspersky.com/af5b59d2c3af86ee2d97b9bb459dec7b83e5033cfc9b53fb319dbcdddb79e5d5/results?tab=lookup

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/0baf09ee-1c44-429c-a4af-1d78086c57d9

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1985388

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Creates autostart registry keys with suspicious names

Drops PE files with benign system names

Found malware configuration

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

Potential Privilege Escalation using Task Scheduler highest RunLevel

Sample uses string decryption to hide its real strings

Sigma detected: Files With System Process Name In Unsuspected Locations

Sigma detected: Schedule system process

Sigma detected: System File Execution Location Anomaly

System process connects to network (likely due to code injection or exploit)

Uses schtasks.exe or at.exe to add and modify task schedules

Yara detected Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/af5b59d2c3af86ee2d97b9bb459dec7b83e5033cfc9b53fb319dbcdddb79e5d5

Verdict:

inconclusive

YARA:

13 match(es)

Tags:

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

Link:

https://app.malva.re/file/675a6bcf1161098f7fc8e65cf6b07ec8

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/af5b59d2c3af86ee2d97b9bb459dec7b83e5033cfc9b53fb319dbcdddb79e5d5/

Threat name:

ByteCode-MSIL.Backdoor.Quasar

Status:

Malicious

First seen:

2026-10-11 05:03:33 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=v5nvtuwdv6do4lmxxg5ulhpmpob6kaz47snvh6zrtw6n3w3z4xkq._file

Verdict:

malicious

Label(s):

QuasarRAT

Link:

https://reports.threatray.com/291e7892-b8d0-46b5-b86f-7f714dfb234f

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:uvach.in defense_evasion discovery execution persistence spyware trojan

Link:

https://tria.ge/reports/261011-fn8b5ad13p/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

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

Adds Run key to start application

Executes a file named after a Windows system binary

Executes dropped EXE

Family: Quasar RAT

Quasar payload

Malware Config

C2 Extraction:

uvach.in:443

Unpacked files

SH256 hash:

af5b59d2c3af86ee2d97b9bb459dec7b83e5033cfc9b53fb319dbcdddb79e5d5

MD5 hash:

675a6bcf1161098f7fc8e65cf6b07ec8

SHA1 hash:

c23a83c1459ed3bbbf81885dad9b0f249a30cf3e

Detections:

QuasarRAT

cn_utf8_windows_terminal

INDICATOR_SUSPICIOUS_Binary_References_Browsers

INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

INDICATOR_SUSPICIOUS_GENInfoStealer

MAL_QuasarRAT_May19_1

malware_windows_xrat_quasarrat

MALWARE_Win_QuasarStealer

win_quasar_rat_client

win_quasarrat_j2

Link:

https://www.unpac.me/results/cb32ac98-ff7e-441b-a6e1-1b18c5859448/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/af5b59d2c3af/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:	BLOWFISH_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for Blowfish constants

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:	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:	FreddyBearDropper Create hunting rule
Author:	Dwarozh Hoshiar
Description:	Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.

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_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:	MALWARE_Win_QuasarStealer Create hunting rule
Author:	ditekshen
Description:	Detects Quasar infostealer

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 Create hunting rule
Description:	Detects QuasarRAT malware

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

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:	RC6_Constants Create hunting rule
Author:	chort (@chort0)
Description:	Look for RC6 magic constants in binary
Reference:	https://twitter.com/mikko/status/417620511397400576

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:	SHA512_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA384/SHA512 constants

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:	Windows_Generic_Threat_803feff4 Create hunting rule
Author:	Elastic Security

Rule name:	WIN_Malware_Unknown_ForgeAuto_6717780a_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat extrait)

Rule name:	WIN_Malware_XWorm_ForgeAuto_6b06c990_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects XWorm (pe, etat extrait)

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.

Web download

QuasarRAT

exe af5b59d2c3af86ee2d97b9bb459dec7b83e5033cfc9b53fb319dbcdddb79e5d5

(this sample)

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/91400/

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commented on 2026-10-11 05:06:00 UTC

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

{
"sha256": "af5b59d2c3af86ee2d97b9bb459dec7b83e5033cfc9b53fb319dbcdddb79e5d5",
"yara_possible_family": "quasarrat",
"key": "84bc9beba07f9f2bdaa339ce9a5bf22efff8edbbbdadfa2113b2c2ca038f430c",
"salt": "bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941",
"config": {
"obfuscated_key_1": "1.4.1",
"obfuscated_key_2": "uvach.in:443;",
"obfuscated_key_3": 3000,
"obfuscated_key_4": "APPLICATIONDATA",
"obfuscated_key_5": "SubDir",
"obfuscated_key_6": "svchost.exe",
"obfuscated_key_7": true,
"obfuscated_key_8": true,
"obfuscated_key_9": "eb5e05a5-27fb-4e3d-a84e-332dd9dd6dcb",
"obfuscated_key_10": "https://uvach.in",
"obfuscated_key_11": true,
"obfuscated_key_12": true,
"obfuscated_key_13": "064A791F72F1A9EEE6944D54C0499DCF8FED6648",
"obfuscated_key_14": "uvach.in",
"obfuscated_key_15": "Logs",
"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
}
}