MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8e35d21cd27c3f66b7e9dede80e2052299ffd45a7d160ac891277ff656dcb60. 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: 19

Intelligence 19 IOCs YARA 35 File information Comments

SHA256 hash:	b8e35d21cd27c3f66b7e9dede80e2052299ffd45a7d160ac891277ff656dcb60
SHA3-384 hash:	d319bd5d7482dc97f66fb8a5aa468692a1ef83538e02e31d64697262ae41598dca499421f415adee8b77dc03856dbe73
SHA1 hash:	0c51faf2333283295a3c7bfabe0f1e4dbbec3043
MD5 hash:	4a40df879786da0a244949fb0cf217b0
humanhash:	wisconsin-washington-purple-pizza
File name:	4a40df879786da0a244949fb0cf217b0.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	618'496 bytes
First seen:	2025-02-26 18:08:55 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	0ebb3c09b06b1666d307952e824c8697 (15 x RedLineStealer, 13 x LgoogLoader, 7 x NanoCore)
ssdeep	12288:Yuc9O5h9vWpoTlvwLbX/EZ+j8qGvSw1ZoQtYraa4uo968fXGDfJ6eIQFSr+AT0:Y99ofKMCLTK+jDH0rzuo0zDfJ6eTSr/0
TLSH	T150D41212C5E48137E4E6337029FA16A31B34BCA56B28A3EF934565E98C367D1613C36F
TrID	82.1% (.EXE) Win32 MS Cabinet Self-Extractor (WExtract stub) (303567/2/11) 8.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 2.8% (.EXE) Win64 Executable (generic) (10522/11/4) 1.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 1.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika	pebin
dhash icon	e862eae6b692c6ee (3 x Azov, 1 x CoinMiner.XMRig, 1 x Worm.m0yv)
Reporter	abuse_ch
Tags:	exe QuasarRAT RAT

Intelligence

File Origin

# of uploads :

# of downloads :

455

Origin country :

Vendor Threat Intelligence

Malware family:

avemaria

ID:

File name:

4a40df879786da0a244949fb0cf217b0.exe

Verdict:

Malicious activity

Analysis date:

2025-02-26 18:13:57 UTC

Tags:

avemaria warzone rat quasar upx

Link:

https://app.any.run/tasks/81535867-0296-4526-ae36-450d182bdec7

Note:

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

Detection(s):

Win.Malware.Cyix-6914663-0

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67bf595128ab76d43a5d7ba7

Tags:

fynloski dropper virus

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a file in the %temp% subdirectories

Creating a process from a recently created file

Creating a window

Creating a file

Enabling the 'hidden' option for recently created files

Moving a file to the %temp% subdirectory

Replacing files

Launching many processes

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Verdict:

Malicious

Labled as:

Crifi.Generic

Link:

https://www.hybrid-analysis.com/sample/b8e35d21cd27c3f66b7e9dede80e2052299ffd45a7d160ac891277ff656dcb60

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/18154f19-d1cf-4292-b21d-962944cc3744

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1625057

Signature

Antivirus / Scanner detection for submitted sample

Contain functionality to detect virtual machines

Contains functionality to inject code into remote processes

Injects a PE file into a foreign processes

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Sample uses string decryption to hide its real strings

Tries to detect process monitoring tools (Task Manager, Process Explorer etc.)

Tries to detect sandboxes / dynamic malware analysis system (file name check)

Yara detected Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

83%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/b8e35d21cd27c3f66b7e9dede80e2052299ffd45a7d160ac891277ff656dcb60

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/b8e35d21cd27c3f66b7e9dede80e2052299ffd45a7d160ac891277ff656dcb60/

Threat name:

Win32.Backdoor.Fynloski

Status:

Malicious

First seen:

2025-02-24 12:43:44 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

23 of 24 (95.83%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=xdrv2ione7b7m236txw6qdrakiuz77kfu7iwblejcj376zlnznqa._file

Verdict:

malicious

Label(s):

venomrat

Similar samples:

error

QuasarRAT

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:googleupdate discovery persistence spyware trojan

Link:

https://tria.ge/reports/250226-wrje6sxzhv/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Adds Run key to start application

Looks up external IP address via web service

Executes dropped EXE

Loads dropped DLL

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

192.168.1.101:80

Verdict:

Malicious

Tags:

stealer redline Win.Malware.Cyix-6914663-0

YARA:

detect_Redline_Stealer win_redline_wextract_hunting_oct_2023

Link:

https://app.threat.zone/submission/63a2d50f-a3b6-43b1-bfae-15d3c3d232a3

Unpacked files

SH256 hash:

1cf2e04b329396ff50859cfae471914e5d48eeda6f8852a8d440049d9edc1708

MD5 hash:

d2ae5ac88fdc8860a4a2e40889f12648

SHA1 hash:

bc601212bb927a26fa6341df265066927d8b1aa4

Link:

https://www.unpac.me/results/eb0fade6-1a69-43e7-8add-ede8cc479ab8/

SH256 hash:

a9cb9cc0c4522c15a9e4697836063cf1269dedd961c229f84d425375ebc38e18

MD5 hash:

c0de5fe1351ac284f80c665038c190a7

SHA1 hash:

ae3c6097ae349ea68b09965b2ed6c5946e216996

Detections:

QuasarRAT

cn_utf8_windows_terminal

malware_windows_xrat_quasarrat

Quasar_RAT_1

Quasar_RAT_2

MAL_QuasarRAT_May19_1

Vermin_Keylogger_Jan18_1

xRAT_1

CN_disclosed_20180208_KeyLogger_1

win_quasarrat_j1

Quasar

win_quasar_rat_client

INDICATOR_SUSPICIOUS_GENInfoStealer

INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

MALWARE_Win_QuasarRAT

Link:

https://www.unpac.me/results/eb0fade6-1a69-43e7-8add-ede8cc479ab8/

SH256 hash:

df3d56ec16ab0aa62127b45667ed0c77f08c80a43fba0cdf0a43fa64faba44b5

MD5 hash:

52ffc95139b59b0f38e727373eacfa63

SHA1 hash:

e0ce5d70a4a21dc7ae435efb2656687143a9e8f3

Detections:

ZxShell_Related_Malware_CN_Group_Jul17_2

CN_disclosed_20180208_Mal1

MAL_Nitol_Malware_Jan19_1

GoogleBot_UserAgent

INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Link:

https://www.unpac.me/results/eb0fade6-1a69-43e7-8add-ede8cc479ab8/

Parent samples :

554f40d4d4e6d80d96c5fc1b41afb7268a0b09b375adc3bcb1e10b1ff2eed986
b8e35d21cd27c3f66b7e9dede80e2052299ffd45a7d160ac891277ff656dcb60

SH256 hash:

b8e35d21cd27c3f66b7e9dede80e2052299ffd45a7d160ac891277ff656dcb60

MD5 hash:

4a40df879786da0a244949fb0cf217b0

SHA1 hash:

0c51faf2333283295a3c7bfabe0f1e4dbbec3043

Link:

https://www.unpac.me/results/eb0fade6-1a69-43e7-8add-ede8cc479ab8/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b8e35d21cd27/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/b8e35d21cd27c3f66b7e9dede80e2052299ffd45a7d160ac891277ff656dcb60

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

Rule name:	detect_Redline_Stealer Create hunting rule
Author:	Varp0s

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

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
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:	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_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

Rule name:	UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser Create hunting rule
Author:	malware-lu

Rule name:	UPXv20MarkusLaszloReiser Create hunting rule
Author:	malware-lu

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:	win_redline_wextract_hunting_oct_2023 Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects wextract archives related to redline/amadey

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

Rule name:	Zeus_Panda Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects ZEUS Panda Malware
Reference:	https://cyberwtf.files.wordpress.com/2017/07/panda-whitepaper.pdf

Rule name:	Zeus_Panda_RID2AFB Create hunting rule
Author:	Florian Roth
Description:	Detects ZEUS Panda Malware
Reference:	https://cyberwtf.files.wordpress.com/2017/07/panda-whitepaper.pdf

File information

The table below shows additional information about this malware sample such as delivery method and external references.

No further information available

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high
CHECK_NX	Missing Non-Executable Memory Protection	critical
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
AUTH_API	Manipulates User Authorization	ADVAPI32.dll::AllocateAndInitializeSid ADVAPI32.dll::EqualSid ADVAPI32.dll::FreeSid
SECURITY_BASE_API	Uses Security Base API	ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::GetTokenInformation
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CreateProcessA ADVAPI32.dll::OpenProcessToken KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryExA KERNEL32.dll::LoadLibraryA KERNEL32.dll::GetDriveTypeA KERNEL32.dll::GetVolumeInformationA KERNEL32.dll::GetSystemInfo
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateDirectoryA KERNEL32.dll::CreateFileA KERNEL32.dll::DeleteFileA KERNEL32.dll::GetWindowsDirectoryA KERNEL32.dll::GetSystemDirectoryA KERNEL32.dll::GetFileAttributesA
WIN_BASE_USER_API	Retrieves Account Information	ADVAPI32.dll::LookupPrivilegeValueA
WIN_REG_API	Can Manipulate Windows Registry	ADVAPI32.dll::RegCreateKeyExA ADVAPI32.dll::RegOpenKeyExA ADVAPI32.dll::RegQueryInfoKeyA ADVAPI32.dll::RegQueryValueExA ADVAPI32.dll::RegSetValueExA
WIN_USER_API	Performs GUI Actions	USER32.dll::PeekMessageA

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