MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c5659ff1e439fdb199c25ac76fb8d3e9c45b702ac8c99073ccdf7fd1f9cdbfd. 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: 20

Intelligence 20 IOCs YARA 33 File information Comments 1

SHA256 hash:	8c5659ff1e439fdb199c25ac76fb8d3e9c45b702ac8c99073ccdf7fd1f9cdbfd
SHA3-384 hash:	7d69203699c4e1359830ff99f6fbdb09da7c63e063e33be99160e3fac02c9612fbc4e40361a79b6fcc3caa6b97f498ab
SHA1 hash:	34650e3267bb75eec237f645b9ddd996c017fe12
MD5 hash:	6b59f2ca347a24f0a86ea8ed9d17ee74
humanhash:	ink-delta-spring-hot
File name:	venom.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	1'085'952 bytes
First seen:	2025-06-23 13:55:56 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	24576:Faynkc1ZzBvtrZHFjMKY286OOLAlel6qbWtRvRxZ:synkc1ZzBvtrZHFjMKY2zglel6KW
Threatray	90 similar samples on MalwareBazaar
TLSH	T1CB353A14E7F86595F06E7F32747498150A38BE436A3DA74B2B9591980F6B380CCB2F63
TrID	58.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 13.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 8.4% (.EXE) Win64 Executable (generic) (10522/11/4) 5.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika	pebin
Reporter	johnk3r
Tags:	18-230-228-127 91-134-207-16 exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

460

Origin country :

Vendor Threat Intelligence

Malware family:

quasar

ID:

File name:

venom.exe

Verdict:

Malicious activity

Analysis date:

2025-06-23 13:58:10 UTC

Tags:

evasion rat quasar remote crypto-regex

Link:

https://app.any.run/tasks/9065b31e-c626-4c75-bd04-4a522d380454

Note:

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

Detection:

DLAgent09

Link:

https://www.capesandbox.com/analysis/10687/

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68595d0ab06783b9ebd6af43

Tags:

autorun quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Using the Windows Management Instrumentation requests

Сreating synchronization primitives

DNS request

Connection attempt

Sending an HTTP GET request

Creating a window

Sending a custom TCP request

Verdict:

Malicious

Labled as:

Trojan.Agent

Link:

https://www.hybrid-analysis.com/sample/8c5659ff1e439fdb199c25ac76fb8d3e9c45b702ac8c99073ccdf7fd1f9cdbfd

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/4e04af89-48dc-4d1b-9316-1d88fc7ced5f

Result

Threat name:

Clipboard Hijacker, Quasar

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1720986

Signature

.NET source code contains potential unpacker

.NET source code references suspicious native API functions

Antivirus / Scanner detection for submitted sample

Contains functionality to disable the Task Manager (.Net Source)

Contains functionality to hide user accounts

Found malware configuration

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

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Sample uses string decryption to hide its real strings

Sigma detected: Potentially Suspicious Malware Callback Communication

Suricata IDS alerts for network traffic

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Uses dynamic DNS services

Yara detected AntiVM3

Yara detected Clipboard Hijacker

Yara detected Generic Downloader

Yara detected Quasar RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/8c5659ff1e439fdb199c25ac76fb8d3e9c45b702ac8c99073ccdf7fd1f9cdbfd

Verdict:

QuasarRat

YARA:

9 match(es)

Tags:

Executable Malicious PE (Portable Executable) QuasarRat RAT Win 32 Exe x86

Malware Config

C2 Extraction:

PORT: selectbackup.ddn
CNC: selectbackup.ddn

Link:

https://app.malva.re/file/6b59f2ca347a24f0a86ea8ed9d17ee74

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/8c5659ff1e439fdb199c25ac76fb8d3e9c45b702ac8c99073ccdf7fd1f9cdbfd/

Verdict:

Malicious

Link:

https://tip.neiki.dev/file/8c5659ff1e439fdb199c25ac76fb8d3e9c45b702ac8c99073ccdf7fd1f9cdbfd

Threat name:

ByteCode-MSIL.Infostealer.ClipBanker

Status:

Malicious

First seen:

2025-06-23 13:56:33 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

23 of 24 (95.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=rrlft7y6iop5wgm4ewwhn64nh2oelnycvsgjsbz4zx372h443p6q._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

2a8c219afd3d9e171dc1515b32185bad9172bbcdaf15a6a7502458b6e7553ff5

QuasarRAT

326e0518dab187c2786ffb1429a71dc764ef82211aaf59bcd3a8a78c01579283

QuasarRAT

8c5659ff1e439fdb199c25ac76fb8d3e9c45b702ac8c99073ccdf7fd1f9cdbfd

QuasarRAT

98ed685e58c13887c499cef7806acfd58d771bdcf95b60d8c7604fd500a466ba

QuasarRAT

ace5504608d43d701becbb246abe3c7b0483fd3904c13a5677084e6f98ef0271

QuasarRAT

error

QuasarRAT

+ 80 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:client discovery spyware trojan

Link:

https://tria.ge/reports/250623-q8ycrscl7s/

Behaviour

Suspicious use of AdjustPrivilegeToken

System Location Discovery: System Language Discovery

Looks up external IP address via web service

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

selectbackup.ddns.net:5552

Verdict:

Malicious

Tags:

red_team_tool rat quasar_rat downloader trojan Win.Malware.Ursu-9802322-0

YARA:

RDPWrap JPCERTCC_Quasar MALWARE_Win_QuasarRAT MAL_QuasarRAT_May19_1 malware_Quasar_strings malware_windows_quasarrat MALWARE_Win_DLAgent10 MAL_NET_LimeCrypter_RunPE_Jan24

Link:

https://app.threat.zone/submission/565b1e76-d126-4f9e-99c0-77efabf2a294

Unpacked files

SH256 hash:

8c5659ff1e439fdb199c25ac76fb8d3e9c45b702ac8c99073ccdf7fd1f9cdbfd

MD5 hash:

6b59f2ca347a24f0a86ea8ed9d17ee74

SHA1 hash:

34650e3267bb75eec237f645b9ddd996c017fe12

Detections:

QuasarRAT

RDPWrap

Link:

https://www.unpac.me/results/17d3be3d-7668-4311-92ae-07c98482d353/

SH256 hash:

c1428ec7129ad3e36dad35d8992602cefcd6a593952834897424314fe029dd4b

MD5 hash:

67ca4c5eed9cab4b08064d4314dc0a86

SHA1 hash:

61dfa1d80d9e6b506d29e3897dd3ca08ade30988

Detections:

INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer

INDICATOR_SUSPICIOUS_EXE_RegKeyComb_IExecuteCommandCOM

Link:

https://www.unpac.me/results/17d3be3d-7668-4311-92ae-07c98482d353/

Parent samples :
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SH256 hash:

3a96d9a797a3b6b3ea0d8264ed1078508df9557e2f453217d52a75907f9b9465

MD5 hash:

547ebc92cac936d8c3459d2765948f4a

SHA1 hash:

09c143d609b65b19a97289ca7645df2a0bc39c83

Link:

https://www.unpac.me/results/17d3be3d-7668-4311-92ae-07c98482d353/

SH256 hash:

3db2b0c012e3e770548b36eb84ea2278f34dfda82a269fc30f38e743b33855e3

MD5 hash:

ef33c4c8efc8c1b355ad64e12b010070

SHA1 hash:

ac30158d8bd81ec0b728a299c9e72789b4f33f31

Link:

https://www.unpac.me/results/17d3be3d-7668-4311-92ae-07c98482d353/

SH256 hash:

866c468f227e0ee2c3614cf97e74ebacf79fecb24845210488d13a42824cf50d

MD5 hash:

b064ffbd0835d50b00ebe34660832ecf

SHA1 hash:

bf5b5bba369127ccc6d740f27e40b2c67b5cf8bd

Link:

https://www.unpac.me/results/17d3be3d-7668-4311-92ae-07c98482d353/

SH256 hash:

542be6a092437c47aec4c046bf4636f9a3153954b0384141b8cc2922d68a38b5

MD5 hash:

bfb7da75069724d5ec80b44bc2e46d9f

SHA1 hash:

fe757e6a079f7be6efa5d15df7260792560f6576

Link:

https://www.unpac.me/results/17d3be3d-7668-4311-92ae-07c98482d353/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/8c5659ff1e43/report/overview.html

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

Threat name:

iSpy Keylogger

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/8c5659ff1e439fdb199c25ac76fb8d3e9c45b702ac8c99073ccdf7fd1f9cdbfd

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

Rule name:	detect_powershell Create hunting rule
Author:	daniyyell
Description:	Detects suspicious PowerShell activity related to malware execution

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:	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse Create hunting rule
Author:	ditekSHen
Description:	Detects file containing reversed ASEP Autorun registry keys

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_RegKeyComb_DisableWinDefender Create hunting rule
Author:	ditekSHen
Description:	Detects executables embedding registry key / value combination indicative of disabling Windows Defender features

Rule name:	INDICATOR_SUSPICIOUS_EXE_RegKeyComb_IExecuteCommandCOM Create hunting rule
Author:	ditekSHen
Description:	Detects executables embedding command execution via IExecuteCommand COM object

Rule name:	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCMD Create hunting rule
Author:	ditekSHen
Description:	Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF

Rule name:	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer Create hunting rule
Author:	ditekSHen
Description:	detects Windows exceutables potentially bypassing UAC using eventvwr.exe

Rule name:	malware_Quasar_strings Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect QuasarRAT in memory

Rule name:	MALWARE_Win_DLAgent09 Create hunting rule
Author:	ditekSHen
Description:	Detects known downloader agent

Rule name:	MALWARE_Win_DLAgent10 Create hunting rule
Author:	ditekSHen
Description:	Detects known downloader agent

Rule name:	MALWARE_Win_QuasarRAT Create hunting rule
Author:	ditekSHen
Description:	QuasarRAT payload

Rule name:	MAL_NET_UAC_Bypass_May25 Create hunting rule
Author:	Jonathan Peters (cod3nym)
Description:	Detects .NET based tool abusing legitimate Windows utility cmstp.exe to bypass UAC (User-Admin-Controls)
Reference:	Internal Research

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:	msil_suspicious_use_of_strreverse Create hunting rule
Author:	dr4k0nia
Description:	Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse

Rule name:	Multifamily_RAT_Detection Create hunting rule
Author:	Lucas Acha (http://www.lukeacha.com)
Description:	Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables

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:	Quasar Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect QuasarRAT in memory

Rule name:	quasarrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	QuasarRAT Create hunting rule
Author:	ditekshen
Description:	QuasarRAT payload

Rule name:	quasarrat_kingrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	RDPWrap Create hunting rule
Author:	@bartblaze
Description:	Identifies RDP Wrapper, sometimes used by attackers to maintain persistence.
Reference:	https://github.com/stascorp/rdpwrap

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	SUSP_NET_Msil_Suspicious_Use_StrReverse Create hunting rule
Author:	dr4k0nia, modified by Florian Roth
Description:	Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse
Reference:	https://github.com/dr4k0nia/yara-rules

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

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/10687/

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 (GUARD_CF)	high

Comments

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commented on 2025-06-23 14:01:30 UTC

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

{
"sha256": "8c5659ff1e439fdb199c25ac76fb8d3e9c45b702ac8c99073ccdf7fd1f9cdbfd",
"yara_possible_family": "quasarrat",
"key": "c0a259535a82aca1251b880d30d1a22e",
"salt": "bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941",
"config": {
"obfuscated_key_1": "2.7.0.0",
"obfuscated_key_2": "selectbackup.ddns.net:5552;",
"obfuscated_key_3": 3000,
"obfuscated_key_4": "WOtrgpk9s0tBaHY5wCncig==",
"obfuscated_key_5": "3NSukrM1umntSCeOfe75jwutvrgJwZ7RLjyzE7JUxjslb9d4x20pPVjO5raGfg1wGJ0S+FaZONO2tAMvGOYaZA==",
"obfuscated_key_6": "APPLICATIONDATA",
"obfuscated_key_7": "",
"obfuscated_key_8": "Venom.exe",
"obfuscated_key_9": false,
"obfuscated_key_10": false,
"obfuscated_key_11": false,
"obfuscated_key_12": "4m697TywNrGW2bvUNC",
"obfuscated_key_13": false,
"obfuscated_key_14": "Venom Client Startup",
"obfuscated_key_15": false,
"obfuscated_key_16": false,
"obfuscated_key_17": "gfz6ANqqncWsAWZd8EiF",
"obfuscated_key_18": "Client",
"obfuscated_key_19": "Logs",
"obfuscated_key_20": false,
"obfuscated_key_21": false,
"obfuscated_key_22": "1VLCVok8uAUWMFluP6aSI4k7Vq9_qFvkxXRj6nvwWGhbo88x",
"obfuscated_key_23": false
}
}