MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f540820b3e7a854666495e26ff7deeece414bd71c7788601fd352e5365e1d78. 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 37 File information Comments

SHA256 hash:	3f540820b3e7a854666495e26ff7deeece414bd71c7788601fd352e5365e1d78
SHA3-384 hash:	a04a2bb5da10d5c25e6123bf2b5d9d0f142930a1f9c2ee63781356a006471586c670f64b62c184bc7edcf05d0cd5e4d8
SHA1 hash:	9c259b8c2e17962866fc5c9fcf5094db97925812
MD5 hash:	238561a064511de527206e7fdf34b272
humanhash:	venus-texas-mockingbird-lamp
File name:	Client.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	296'960 bytes
First seen:	2025-11-22 23:54:11 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'854 x AgentTesla, 19'783 x Formbook, 12'304 x SnakeKeylogger)
ssdeep	6144:T7zO0LSclT6FOwEP5Kq+SMv0VGb7bDcllbkvn6:zlJtTF9zVGkllbk/6
TLSH	T12D545A2527F8A93BD8BE17B4F53141094B76FC07B517F78E6A5818B82C1A38985837E3
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	Hexastrike
Tags:	exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Detection:

QuasarRAT

Link:

https://www.capesandbox.com/analysis/39335/

Detection(s):

Win.Trojan.Barys-1

Win.Packed.Generic-9830106-0

Win.Packed.QuasarRAT-10012744-0

Win.Trojan.Generic-6295765-0

Win.Malware.Generic-6623004-0

Win.Trojan.Generic-6898101-0

Win.Trojan.Generic-6898102-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=692252f24917b5d23db0ac5f

Tags:

vmdetect quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Using the Windows Management Instrumentation requests

Сreating synchronization primitives

DNS request

Connection attempt

Sending an HTTP GET request

Setting a keyboard event handler

Creating a file in the %AppData% subdirectories

Creating a window

Connection attempt to an infection source

Sending a TCP request to an infection source

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

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

Link:

https://www.filescan.io/uploads/692250cbf96b58f0dc805c80/reports/2cb61061-a4e1-49c3-aa1d-c6fad0b57241/overview

Verdict:

Malicious

Labled as:

Ransom.Imps.Generic

Link:

https://www.hybrid-analysis.com/sample/3f540820b3e7a854666495e26ff7deeece414bd71c7788601fd352e5365e1d78

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-11-05T19:54:00Z UTC

Last seen:

2025-11-05T20:09:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/3f540820b3e7a854666495e26ff7deeece414bd71c7788601fd352e5365e1d78/results?tab=lookup

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/74f1f226-776c-4b1e-9779-5e221851e703

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/3f540820b3e7a854666495e26ff7deeece414bd71c7788601fd352e5365e1d78

Verdict:

QuasarRat

YARA:

17 match(es)

Tags:

.Net Executable Malicious Managed .NET PE (Portable Executable) PE File Layout QuasarRat RAT SOS: 0.26 Win 32 Exe x86

Malware Config

C2 Extraction:

PORT: 222
CNC: 51.15.17.193

Link:

https://app.malva.re/file/238561a064511de527206e7fdf34b272

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/3f540820b3e7a854666495e26ff7deeece414bd71c7788601fd352e5365e1d78/

Threat name:

ByteCode-MSIL.Backdoor.Quasar

Status:

Malicious

First seen:

2025-11-06 01:15:32 UTC

AV detection:

23 of 24 (95.83%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=h5kaqift46ufiztesxrg756653hecs6xdr3yqya72njokns6dv4a._file

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:test2 discovery spyware trojan

Link:

https://tria.ge/reports/251123-afxmrsvpdv/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

System Location Discovery: System Language Discovery

Looks up external IP address via web service

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

51.15.17.193:222

Verdict:

Malicious

Tags:

rat quasar_rat vermin Win.Trojan.Barys-1 VoidRat External_IP_Lookup Qasar_Rat AZORult

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/20957442-b296-48e2-b235-150e92a15db8

Unpacked files

SH256 hash:

3f540820b3e7a854666495e26ff7deeece414bd71c7788601fd352e5365e1d78

MD5 hash:

238561a064511de527206e7fdf34b272

SHA1 hash:

9c259b8c2e17962866fc5c9fcf5094db97925812

Detections:

win_blackshades_w0

QuasarRAT

Link:

https://www.unpac.me/results/9a7ad4d6-b200-47e5-9446-f94e0384d1ae/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/3f540820b3e7/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/3f540820b3e7a854666495e26ff7deeece414bd71c7788601fd352e5365e1d78

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:	BlackShades_4 Create hunting rule
Author:	Jean-Philippe Teissier / @Jipe_
Description:	BlackShades

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

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:	INDICATOR_SUSPICIOUS_GENRansomware Create hunting rule
Author:	ditekSHen
Description:	Detects command variations typically used by ransomware

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_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:	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:	ditekshen
Description:	QuasarRAT payload

Rule name:	quasarrat Create hunting rule
Author:	jeFF0Falltrades

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_blackshades_w0 Create hunting rule
Author:	Jean-Philippe Teissier / @Jipe_

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/39335/

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