MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639. 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: 21

Intelligence 21 IOCs YARA 33 File information Comments

SHA256 hash:	4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639
SHA3-384 hash:	f33b2da2c2ae26d06e1ad9fe520009475d8786345869aee27685048d17885a3e322503a664bae4742419cdc456f4e5b5
SHA1 hash:	a636879bc217c5834cc538d8ea35041d427f94f0
MD5 hash:	350fd6f01bb9d90dd6e994314a26cbca
humanhash:	saturn-golf-helium-missouri
File name:	4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	356'352 bytes
First seen:	2025-11-20 20:14:31 UTC
Last seen:	2025-11-22 23:55:23 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'672 x AgentTesla, 19'489 x Formbook, 12'212 x SnakeKeylogger)
ssdeep	6144:cV6bPXhLApfpWkfr1MhL1bIzdY08mcMo9wx22eJYOq:gmhApffrmtuzS08m2Kx22S/q
Threatray	681 similar samples on MalwareBazaar
TLSH	T141748D2373A8E93BD5BE9736E432061547B0D547BE16F38F9A5892B92D133868D403B3
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	plebourhis
Tags:	exe QuasarRAT

plebourhis

C2: `localhostpin.camdvr.org:1999`
crypto key: `Ygi5HJYwyeTrUw73VXWN`
seed: `bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941`
mutex: `QSR_MUTEX_yYdSExIad0HEGuGISR`
path: `%APPDATA%\\DRIVE.exe`
Registry: `HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\DRIVE GOOGLE`

Intelligence

File Origin

# of uploads :

# of downloads :

108

Origin country :

Vendor Threat Intelligence

Malware family:

quasar

ID:

File name:

_4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639.exe

Verdict:

Malicious activity

Analysis date:

2025-11-20 20:16:10 UTC

Tags:

quasar rat evasion auto-reg

Link:

https://app.any.run/tasks/9ba33542-b7e5-4a41-8555-77878f6a071a

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/38890/

Detection(s):

Win.Packed.Generic-9829635-0

Win.Packed.Generic-9830106-0

Win.Packed.QuasarRAT-10012744-0

Win.Trojan.Generic-6295765-0

Win.Malware.Generic-6623004-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=691f76ec4917b5d23dafd50a

Tags:

autorun quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Using the Windows Management Instrumentation requests

Сreating synchronization primitives

DNS request

Connection attempt

Sending an HTTP GET request

Creating a file in the %AppData% subdirectories

Launching a process

Creating a process from a recently created file

Creating a file

Setting a keyboard event handler

Creating a window

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

Unauthorized injection to a recently created process

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm base64 byteguard fingerprint infostealer keylogger lolbin obfuscated obfuscated packed quasar quasarrat rat reconnaissance runonce schtasks stealer vbnet vermin xrat

Link:

https://www.filescan.io/uploads/691f76e57d011c9c3a47f190/reports/2d97ce5c-5f9a-4c4b-adf1-06329e0972e2/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-11-20T08:07:00Z UTC

Last seen:

2025-11-20T17:31:00Z UTC

Hits:

~10

Detections:

Trojan.MSIL.Quasar.a HEUR:Trojan-Spy.MSIL.Downeks.gen HEUR:Trojan-Spy.MSIL.Agent.sb HEUR:Trojan.Win32.Generic Trojan.MSIL.Quasar.b Trojan-Spy.MSIL.Downeks.sb Trojan-PSW.Win32.Stealer.sb Trojan-PSW.MSIL.Virinom.sb Trojan.MSIL.Agent.foww HEUR:Trojan.MSIL.Quasar.gen PDM:Trojan.Win32.Generic Trojan.Win32.Quasar.sb Trojan.MSIL.Quasar.sb

Link:

https://opentip.kaspersky.com/4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639/results?tab=lookup

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/8cc7d3ab-42ee-40f4-8005-5b069b7695f7

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639

Verdict:

QuasarRat

YARA:

16 match(es)

Tags:

.Net Executable Malicious Managed .NET PE (Portable Executable) PE File Layout QuasarRat RAT SOS: 0.61 Win 32 Exe x86

Malware Config

C2 Extraction:

PORT: localhostpin.cam
CNC: localhostpin.cam

Link:

https://app.malva.re/file/350fd6f01bb9d90dd6e994314a26cbca

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639/

Verdict:

Malicious

Threat:

Family.QUASAR

Link:

https://tip.neiki.dev/file/4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639

Threat name:

ByteCode-MSIL.Backdoor.Quasar

Status:

Malicious

First seen:

2025-11-20 12:40:14 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

33 of 38 (86.84%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=j32ex5ublz4gaoxmlnea6q72e3mihcl4rdhnoy2wl2isyofmsy4q._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

4090ddde1d1ffb846bd2acf0e0f6b355ea151e0b38c33f029049ac6e93919043

QuasarRAT

4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639

QuasarRAT

6eae638d8b5fdad3a682de1353d30733f4c175e62b0773fe786b70b4026eeaa0

QuasarRAT

d42ac4e3da7e1aa7ae41d0547c0cdcf1e30300fb2ea96cea42bb1d43a5000b27

QuasarRAT

error

QuasarRAT

+ 671 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:drive discovery execution persistence spyware trojan

Link:

https://tria.ge/reports/251120-y1tnlsar3y/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Looks up external IP address via web service

Executes dropped EXE

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

localhostpin.camdvr.org:1999

Verdict:

Malicious

Tags:

rat quasar_rat vermin Win.Packed.Generic-9829635-0 Qasar_Rat VoidRat AZORult External_IP_Lookup

YARA:

JPCERTCC_Quasar MALWARE_Win_QuasarRAT MAL_QuasarRAT_May19_1 Quasar_RAT_1 Quasar_RAT_2 Vermin_Keylogger_Jan18_1 Windows_Trojan_Quasarrat_e52df647 malware_Quasar_strings malware_windows_quasarrat win_quasar_rat_client

Link:

https://app.threat.zone/submission/d39a7d4b-13d4-469e-912d-0b2b4167060c

Unpacked files

SH256 hash:

4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639

MD5 hash:

350fd6f01bb9d90dd6e994314a26cbca

SHA1 hash:

a636879bc217c5834cc538d8ea35041d427f94f0

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/8241e51d-b4e7-4637-9a7c-c853bc088f28/

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/4ef44bf6815e78603aec5b480f43fa26d883897c88ced763565e912c38ac9639

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:	CN_disclosed_20180208_KeyLogger_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects malware from disclosed CN malware set
Reference:	https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details

Rule name:	CN_disclosed_20180208_KeyLogger_1_RID3227 Create hunting rule
Author:	Florian Roth
Description:	Detects malware from disclosed CN malware set
Reference:	https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details

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

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

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:	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:	Quasar_RAT_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	Quasar_RAT_1 Create hunting rule
Author:	@SOCRadar
Description:	Detects Quasar RAT

Rule name:	Quasar_RAT_1_RID2B54 Create hunting rule
Author:	Florian Roth
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	Quasar_RAT_2 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	Quasar_RAT_2 Create hunting rule
Description:	Detects Quasar RAT

Rule name:	Quasar_RAT_2_RID2B55 Create hunting rule
Author:	Florian Roth
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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/

Rule name:	Windows_Trojan_Quasarrat_e52df647 Create hunting rule
Author:	Elastic Security

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

Rule name:	xRAT_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Patchwork malware
Reference:	https://goo.gl/Pg3P4W

Rule name:	xRAT_1_RID2900 Create hunting rule
Author:	Florian Roth
Description:	Detects Patchwork malware
Reference:	https://goo.gl/Pg3P4W

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/38890/

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