MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 940773be1f5061eb206c7bbf3030765aac7b973f5a9915c62ba893a2d97b28f2. 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: 18

Intelligence 18 IOCs YARA 17 File information Comments

SHA256 hash:	940773be1f5061eb206c7bbf3030765aac7b973f5a9915c62ba893a2d97b28f2
SHA3-384 hash:	df4d85e3698e34bcca9f70be6e1604f903a9ba4b70c55c59dd4c0beccdfee954c1c7d6beac33d611cb688abd2704cbf5
SHA1 hash:	8b935947b5442b4afb7a0519cf8a107f2aa82e09
MD5 hash:	c7c677f4d824b6e894476c265f0c40f7
humanhash:	nine-one-kansas-skylark
File name:	file
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	646'656 bytes
First seen:	2026-03-09 11:50:01 UTC
Last seen:	2026-03-09 12:49:55 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'844 x AgentTesla, 19'775 x Formbook, 12'297 x SnakeKeylogger)
ssdeep	12288:cPRb9qoSjkqjVnl36ud0zR/6CtQ9PUHIG8Dl8gSD+37PWY1Y1+f7LfN//TT34:cJ9mjkqjVnlqud+/2P+AlUDcPt1aKFHQ
TLSH	T140D4122037F9864BE1BF66B898F161416676F663B623E74C1C8462FD4433741A9C33BA
TrID	70.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 6.2% (.EXE) Win64 Executable (generic) (6522/11/2) 4.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika	pebin
Reporter	Bitsight
Tags:	dropped-by-amadey exe fbf543 QuasarRAT

Bitsight

url: http://158.94.211.222/files/7942715918/otRD45B.exe

Intelligence

File Origin

# of uploads :

# of downloads :

165

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

QuasarRAT

Details

QuasarRAT

c2 socket addresses, a version, a mutex, AES-CBC decryption parameters, a missionid, an interval, varying flags, a filepath, an installation registry path and scheduled task name, and possibly additional parameters which vary per version

Link:

https://research.acce.ciphertechsolutions.com/results/dbc59a51-9263-4f40-97bd-438bd0d84c75/

Malware family:

quasar

ID:

File name:

file.exe

Verdict:

Malicious activity

Analysis date:

2026-03-09 11:53:04 UTC

Tags:

auto-reg quasar

Link:

https://app.any.run/tasks/b63a2771-9737-4a5f-8707-f00b95596dbe

Note:

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

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/56806/

Detection(s):

SecuriteInfo.com.BackDoor.QuasarNET.3.17125.18864.UNOFFICIAL

Verdict:

Malicious

Score:

97.4%

Link:

https://cyber-fortress.com/docs/result/index.php?id=69aeb406e5dc8e2b2c318522

Tags:

autorun quasar

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm base64 downeks fingerprint keylogger lolbin obfuscated obfuscated packed quasar quasarrat reconnaissance runonce schtasks stack_pickle vermin

Link:

https://www.filescan.io/uploads/69aeb40210e80629d4048808/reports/8698d8b0-a261-4175-92b7-1ffc2ec9658b/overview

Verdict:

Malicious

Labled as:

IL:Trojan.MSILZilla

Link:

https://www.hybrid-analysis.com/sample/940773be1f5061eb206c7bbf3030765aac7b973f5a9915c62ba893a2d97b28f2

Verdict:

Malicious

File Type:

exe x32

Detections:

Trojan.Win32.Quasar.sb Trojan.MSIL.Quasar.a HEUR:Trojan.MSIL.Quasar.gen PDM:Trojan.Win32.Tasker.cust PDM:Trojan.Win32.Generic

Link:

https://opentip.kaspersky.com/940773be1f5061eb206c7bbf3030765aac7b973f5a9915c62ba893a2d97b28f2/results?tab=lookup

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/d7247bfb-1da9-45e7-b1fc-6a9c8beb7e1a

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/940773be1f5061eb206c7bbf3030765aac7b973f5a9915c62ba893a2d97b28f2

Verdict:

QuasarRat

YARA:

14 match(es)

Tags:

.Net Executable Fody/Costura Packer Malicious Managed .NET PDB Path PE (Portable Executable) PE File Layout QuasarRat RAT SOS: 0.00 SOS: 0.16 SOS: 0.21 SOS: 0.23 SOS: 0.31 SOS: 0.38 SOS: 0.73 Win 32 Exe x86

Malware Config

C2 Extraction:

PORT: aVqVFHrApWTUvIBfiuiFGeQHq/ibzf2M7zbBBxihUlTcryDKmSL00RtzC1fH0ZotWv0HVW1g2E9LUmO+FzEeteoJt7mZq2BlaKtrtFzGxxQ=
CNC: aVqVFHrApWTUvIBfiuiFGeQHq/ibzf2M7zbBBxihUlTcryDKmSL00RtzC1fH0ZotWv0HVW1g2E9LUmO+FzEeteoJt7mZq2BlaKtrtFzGxxQ=

Link:

https://app.malva.re/file/c7c677f4d824b6e894476c265f0c40f7

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/940773be1f5061eb206c7bbf3030765aac7b973f5a9915c62ba893a2d97b28f2/

Verdict:

Malicious

Threat:

Family.QUASARRAT

Link:

https://tip.neiki.dev/file/940773be1f5061eb206c7bbf3030765aac7b973f5a9915c62ba893a2d97b28f2

Threat name:

ByteCode-MSIL.Backdoor.Quasar

Status:

Malicious

First seen:

2026-03-09 11:50:39 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

17 of 24 (70.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=sqdxhpq7kbq6widmpo7tamdwlkwhxfz7lkmrlrrlvcj2fwl3fdza._file

Verdict:

malicious

Label(s):

quasarrat

Similar samples:

error

QuasarRAT

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar discovery execution persistence spyware trojan

Link:

https://tria.ge/reports/260309-nzsptags2n/

Behaviour

Runs ping.exe

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

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

Checks computer location settings

Executes dropped EXE

Quasar RAT

Quasar family

Quasar payload

Unpacked files

SH256 hash:

cfeec75a0aad3efbd553d9d1f67b71b3de7ec9788629d73ce696bdaadd26554c

MD5 hash:

a636c6244c3193bb4cd596606e4937ad

SHA1 hash:

785c9bd21aefde156d5dc744c0aa577315fea5bf

Detections:

SUSP_NET_Large_Static_Array_In_Small_File_Jan24

Link:

https://www.unpac.me/results/56fb4882-c78c-4369-8dea-07fff06f49cc/

Parent samples :

a342889b6129444756d089aacbd647b1fcb0273ed5894885e1641038a001a2d7
b9b51e29d004739a401a3628bd5b48cccb9bfa5bbc67dbacd3be197a5be32285
940773be1f5061eb206c7bbf3030765aac7b973f5a9915c62ba893a2d97b28f2
d71ebb253d47b4f626d03dafa65099191ab6d939c6c10be87b2ff9fdc73f867f
102b0010ff82572936b26dda6f3f9c13d61386f653c1759036b3d5258ad086ec

SH256 hash:

940773be1f5061eb206c7bbf3030765aac7b973f5a9915c62ba893a2d97b28f2

MD5 hash:

c7c677f4d824b6e894476c265f0c40f7

SHA1 hash:

8b935947b5442b4afb7a0519cf8a107f2aa82e09

Link:

https://www.unpac.me/results/56fb4882-c78c-4369-8dea-07fff06f49cc/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/940773be1f50/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/940773be1f5061eb206c7bbf3030765aac7b973f5a9915c62ba893a2d97b28f2

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:	Costura_Protobuf Create hunting rule
Author:	@bartblaze
Description:	Identifies Costura and Protobuf in .NET assemblies, respectively for storing resources and (de)serialization. Seen together might indicate a suspect binary.

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

Rule name:	INDICATOR_EXE_Packed_Fody Create hunting rule
Author:	ditekSHen
Description:	Detects executables manipulated with Fody

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

Rule name:	MAL_BackNet_Nov18_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects BackNet samples
Reference:	https://github.com/valsov/BackNet

Rule name:	MAL_BackNet_Nov18_1_RID2D6D Create hunting rule
Author:	Florian Roth
Description:	Detects BackNet samples
Reference:	https://github.com/valsov/BackNet

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:	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:	quasarrat Create hunting rule
Author:	jeFF0Falltrades

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:	Vermin_Keylogger_Jan18_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Vermin Keylogger
Reference:	https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/