MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b6120aa7ee8cf2475648b7b8a287275e63e4a657b30694123ab8bf47463d5477. 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: 16

Intelligence 16 IOCs YARA 38 File information Comments

SHA256 hash:	b6120aa7ee8cf2475648b7b8a287275e63e4a657b30694123ab8bf47463d5477
SHA3-384 hash:	ca84f5dcb6b20bb2d9db2014becfb29efb333098fa324b835c5144b301dd395727a3e0054450469139e0c00089f30129
SHA1 hash:	d05301b063eebc33581275a749dc1ef76dc4e83a
MD5 hash:	81ab6657921371802c658665bdf034a6
humanhash:	thirteen-fourteen-finch-carpet
File name:	b6120aa7ee8cf2475648b7b8a287275e63e4a657b30694123ab8bf47463d5477
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	860'672 bytes
First seen:	2026-06-08 09:54:04 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (49'293 x AgentTesla, 20'712 x Formbook, 12'401 x SnakeKeylogger)
ssdeep	24576:ypQSq4/p6pmrRrkwOgyybTqlH4Al6/UIZ:ypQT86p2RrkjgJm3U
TLSH	T15F05028AA7C08C30CA5BAE3084301D7442339F9D3E59F645EE28BC7337B7AD62865597
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
dhash icon	70c0db4eea7ab0fc (36 x QuasarRAT, 6 x AveMariaRAT)
Reporter	adrian__luca
Tags:	exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

188

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

ConfuserEx

Details

Link:

https://research.acce.ciphertechsolutions.com/results/c7e925bc-ab28-4944-a3b7-308a65305c1e/

Malware family:

n/a

ID:

File name:

Mensajes en cuarentena.zip

Verdict:

No threats detected

Analysis date:

2026-05-19 14:09:42 UTC

Tags:

attachments attc-arch arch-exec

Link:

https://app.any.run/tasks/80a0c713-6da9-4b90-9d9d-36b83e7d1240

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/69971/

Detection(s):

SecuriteInfo.com.BackDoor.Quasar.277.11326.18848.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6a2691873e9eff6a6b68c296

Tags:

autorun quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Launching a service

Restart of the analyzed sample

Creating a file

Using the Windows Management Instrumentation requests

DNS request

Connection attempt

Sending an HTTP GET request

Creating a file in the %AppData% subdirectories

Launching a process

Enabling the 'hidden' option for recently created files

Creating a process from a recently created file

Connection attempt to an infection source

Creating a window

Unauthorized injection to a recently created process

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

Unauthorized injection to a recently created process by context flags manipulation

Query of malicious DNS domain

Enabling autorun by creating a file

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

base64 dotfuscator obfuscated obfuscated packed reconnaissance smartassembly vbnet yano

Link:

https://www.filescan.io/uploads/6a269162bf16337e43bb3c00/reports/f681395a-e01d-4bd7-8e9f-20b285189b26/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/b6120aa7ee8cf2475648b7b8a287275e63e4a657b30694123ab8bf47463d5477

Verdict:

Malicious

File Type:

exe x32

First seen:

2026-05-19T08:54:00Z UTC

Last seen:

2026-06-09T20:20:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/b6120aa7ee8cf2475648b7b8a287275e63e4a657b30694123ab8bf47463d5477/results?tab=lookup

Verdict:

Suspicious

Link:

https://analyze.intezer.com/analyses/06f9b452-1c59-4191-b037-4af7697d31cd

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/b6120aa7ee8cf2475648b7b8a287275e63e4a657b30694123ab8bf47463d5477

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b6120aa7ee8cf2475648b7b8a287275e63e4a657b30694123ab8bf47463d5477/

Threat name:

Win32.Backdoor.Quasar

Status:

Malicious

First seen:

2026-05-19 17:30:35 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

27 of 36 (75.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=wyjavj7ortzeovsiw64kfbzhlzr6jjsxwmdjier2xc7uorr5kr3q._file

Verdict:

malicious

Label(s):

quasarrat

Similar samples:

error

QuasarRAT

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:toy5 discovery execution persistence spyware trojan

Link:

https://tria.ge/reports/260608-lxjb9acw2t/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Program crash

System Location Discovery: System Language Discovery

SmartAssembly .NET packer

Suspicious use of SetThreadContext

Looks up external IP address via web service

Executes dropped EXE

Family: Quasar RAT

Quasar payload

Malware Config

C2 Extraction:

resourcesmxuy.ydns.eu:61541
resourcesmxuy.sytes.net:61542

Unpacked files

SH256 hash:

b6120aa7ee8cf2475648b7b8a287275e63e4a657b30694123ab8bf47463d5477

MD5 hash:

81ab6657921371802c658665bdf034a6

SHA1 hash:

d05301b063eebc33581275a749dc1ef76dc4e83a

Link:

https://www.unpac.me/results/42938ad6-9e0f-4dba-85bc-f70a05d0cfc8/

SH256 hash:

1e6d8b2c9fa719f75fb72bfac4134a93857e2ec3c9b78dd3bad55ea940a749d3

MD5 hash:

772d8f34a72902b08ecbc4092ce281c1

SHA1 hash:

3c43c99a6322fa2e18f366050b680a814470af6e

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/42938ad6-9e0f-4dba-85bc-f70a05d0cfc8/

SH256 hash:

6042ae4a194410c1a704e45f59925dcb685f8758cda50841a9fe47d2608743f9

MD5 hash:

cc75855487188a77604645baa7ce4861

SHA1 hash:

e621ccb1c7a11d30f4170ee484c0951fa1c0f251

Link:

https://www.unpac.me/results/42938ad6-9e0f-4dba-85bc-f70a05d0cfc8/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b6120aa7ee8c/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/b6120aa7ee8cf2475648b7b8a287275e63e4a657b30694123ab8bf47463d5477

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

Rule name:	DebuggerCheck__RemoteAPI 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_EXE_Packed_Dotfuscator Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with Dotfuscator

Rule name:	INDICATOR_EXE_Packed_Goliath Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with Goliath

Rule name:	INDICATOR_EXE_Packed_SmartAssembly Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with SmartAssembly

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_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:	ditekshen
Description:	QuasarRAT payload

Rule name:	quasarrat_kingrat Create hunting rule
Author:	jeFF0Falltrades

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_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:	VECT_Ransomware Create hunting rule
Author:	Mustafa Bakhit
Description:	Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

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/69971/

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