MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95. 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 44 File information Comments 1

SHA256 hash:	de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95
SHA3-384 hash:	14ddcad615095df477fba11e63196917bc1eb9ebf89bb88d834f4074e19d3be298a0fe6a5ed53541babc31c8cf41896a
SHA1 hash:	f597a746f95130cef2bc2d24a09226ece6990ae6
MD5 hash:	d0ca7ca22e49496160584d385654dbc8
humanhash:	utah-orange-muppet-washington
File name:	file
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	3'789'824 bytes
First seen:	2026-03-25 22:51:34 UTC
Last seen:	2026-03-25 23:01:45 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'859 x AgentTesla, 19'787 x Formbook, 12'305 x SnakeKeylogger)
ssdeep	49152:mWM0H3xHeweSsyJ5n7p+gVuqHIVj0KNAQH1CQdt2b7ryAhZghDAMPncw2tDgHHBN:mXYRKNAQsQdt67ryApG
Threatray	1 similar samples on MalwareBazaar
TLSH	T189066C147BF85E23E17F9FB2E4B4411267F0F86AF363DB0B154162B91D62B209A413A7
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	Bitsight
Tags:	dropped-by-amadey exe fbf543 QuasarRAT

Bitsight

url: http://158.94.208.168/files/8042875554/QxknRPs.exe

Intelligence

File Origin

# of uploads :

# of downloads :

206

Origin country :

Vendor Threat Intelligence

Details

Link:

https://research.acce.ciphertechsolutions.com/results/c090ee81-dec9-4e57-8825-7072d1a44bce/

Malware family:

quasar

ID:

File name:

_de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95.exe

Verdict:

Malicious activity

Analysis date:

2026-03-25 22:52:45 UTC

Tags:

auto-reg quasar dcrat stealer asyncrat crypto-regex

Link:

https://app.any.run/tasks/59cc628a-5d28-49b5-8e4d-689586fd656f

Note:

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

Detection:

VenomRAT

Link:

https://www.capesandbox.com/analysis/59296/

Detection(s):

Win.Malware.Generic-9883083-0

Win.Malware.Msilheracles-9900242-0

ditekSHen.MALWARE.Win.Trojan.AsyncRAT.UNOFFICIAL

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL

Win.Packed.Downeks-6898097-0

YARA.DITEKSHEN_MALWARE_Win_Quasarstealer.UNOFFICIAL

YARA.SIGNATURE_BASE_MAL_Quasarrat_May19_1.UNOFFICIAL

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=69c46726aacb4c376b140db5

Tags:

infosteal asyncrat quasar emotet

Result

Verdict:

Malware

Maliciousness:

Behaviour

Connection attempt

Creating a window

Сreating synchronization primitives

Creating a file in the %AppData% subdirectories

Launching a process

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm base64 certreq cmd cmdkey dllhost evasive expand explorer fingerprint infostealer lolbin netsh obfuscated obfuscated privilege quasarrat reconnaissance runonce schtasks soft-404 stealer wmic

Link:

https://www.filescan.io/uploads/69c467202346b9da57a6e857/reports/42744095-0dd8-4e9b-af79-33503c9267a4/overview

Verdict:

Malicious

Labled as:

Dump:Generic.Beacon.Marte.Z

Link:

https://www.hybrid-analysis.com/sample/de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95

Verdict:

Malicious

File Type:

exe x32

First seen:

2026-03-25T19:56:00Z UTC

Last seen:

2026-03-25T21:31:00Z UTC

Hits:

~100

Detections:

HEUR:Trojan-PSW.MSIL.Stealer.gen HEUR:Trojan-Banker.MSIL.ClipBanker.gen HEUR:Trojan.Win32.Generic Backdoor.MSIL.Crysan.fb Trojan-PSW.Win32.Stealer.sb Trojan-PSW.Win32.Coins.sb Trojan-PSW.MSIL.Stealer.sb Trojan-PSW.MSIL.Agent.sb Trojan-GameThief.Win32.Worgtop.f Trojan.Win32.Quasar.sb Trojan-Banker.Win32.Express.sb Trojan.MSIL.Quasar.a HEUR:Trojan-Spy.MSIL.Agent.sb HEUR:Trojan-PSW.Win32.Agent.gen PDM:Trojan.Win32.Generic PDM:Trojan.Win32.Tasker.cust HEUR:Trojan-PSW.Win32.Agent.sb

Link:

https://opentip.kaspersky.com/de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95/results?tab=lookup

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/e2dd3fb3-85f9-4211-b250-0444f62faaa8

Score:

97%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95

Gathering data

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95/

Verdict:

Malicious

Threat:

Family.QUASARRAT

Link:

https://tip.neiki.dev/file/de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95

Threat name:

ByteCode-MSIL.Trojan.MassLogger

Status:

Malicious

First seen:

2026-03-25 22:52:26 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

21 of 24 (87.50%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=32m3xgrexcdzimlzszmyknz5vxfwjqqlg27i55kkcs3yaki7hokq._file

Verdict:

malicious

Label(s):

xoriumstealer

QuasarRAT

error

QuasarRAT

Result

Malware family:

xorium_stealer

Score:

10/10

Tags:

family:quasar family:xorium_stealer botnet:crypto discovery execution persistence spyware stealer trojan

Link:

https://tria.ge/reports/260325-2th53sfv2z/

Behaviour

Runs ping.exe

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Enumerates physical storage devices

System Network Configuration Discovery: Internet Connection Discovery

Looks up external IP address via web service

Executes dropped EXE

Reads user/profile data of web browsers

Detects XoriumStealer payload

Quasar RAT

Quasar family

Quasar payload

XoriumStealer

Xorium_stealer family

Malware Config

C2 Extraction:

185.241.208.20:1200

Unpacked files

SH256 hash:

de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95

MD5 hash:

d0ca7ca22e49496160584d385654dbc8

SHA1 hash:

f597a746f95130cef2bc2d24a09226ece6990ae6

Detections:

win_masslogger_w0

QuasarRAT

Link:

https://www.unpac.me/results/0809376f-e0e6-4ea5-935b-fb29ad8f3089/

Malware family:

Phorpiex

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/de99bb9a24b8/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/de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95

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:	detect_Redline_Stealer_V2 Create hunting rule
Author:	Varp0s

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:	grakate_stealer_nov_2021 Create hunting rule

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_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_Referenfces_File_Transfer_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many file transfer clients. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing SQL queries to confidential data stores. Observed in infostealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice Create hunting rule
Author:	ditekSHen
Description:	Detects executables attemping to enumerate video devices using WMI

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:	masslogger_gcch Create hunting rule
Author:	govcert_ch

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 (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:	Njrat Create hunting rule
Author:	botherder https://github.com/botherder
Description:	Njrat

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:	telebot_framework Create hunting rule
Author:	vietdx.mb

Rule name:	TH_APT_EquationGroup_2026_CYFARE Create hunting rule
Author:	CYFARE
Description:	Equation Group (G0020) APT malware detection - covers EquationDrug, GrayFish, DoubleFantasy, TripleFantasy, Fanny, GROK, nls_933w HDD firmware module, and Shadow Brokers tooling
Reference:	https://cyfare.net/

Rule name:	venomrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	win_masslogger_w0 Create hunting rule
Author:	govcert_ch

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 de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95

(this sample)

Dropped by

Amadey

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/3805095/

Cape

https://www.capesandbox.com/analysis/59296/

Comments

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commented on 2026-03-25 22:56:23 UTC

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

{
"sha256": "de99bb9a24b887943179965985373dadcb64c20b36be8ef54a14b780291f3b95",
"yara_possible_family": "quasarrat",
"key": "None",
"salt": "None",
"config": {
"obfuscated_key_1": null,
"obfuscated_key_2": "INTERNETCACHE",
"obfuscated_key_3": "INTERNETCACHE",
"obfuscated_key_4": null,
"obfuscated_key_5": "53696745643235353139206e6f204564323535313920636f6c6c6973696f6e73",
"obfuscated_key_6": "1ad5250323588b01952c",
"obfuscated_key_7": "58666602999999016666",
"obfuscated_key_8": "a37859038472d3025eb7",
"obfuscated_key_9": "59f1b20209e5a601bd6e",
"obfuscated_key_10": "b2e2650113ca4d037add",
"obfuscated_key_11": "null",
"obfuscated_key_12": "null"
}
}