MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4090ddde1d1ffb846bd2acf0e0f6b355ea151e0b38c33f029049ac6e93919043. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4090ddde1d1ffb846bd2acf0e0f6b355ea151e0b38c33f029049ac6e93919043
SHA3-384 hash: 11cd2d44a7b8cafc8cad2bc80216f32b77b70232515e1d262cfcd2ec5f1b4f71dd1c8d1095cf55cd64c284a749e8e14c
SHA1 hash: 24e11166c17a825c054a44ab50b0e27ee2c02d49
MD5 hash: b65f70b2181be52f792520cf30325763
humanhash: pennsylvania-beryllium-connecticut-skylark
File name:file
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:356'352 bytes
First seen:2025-08-14 13:13:31 UTC
Last seen:2025-08-14 13:13:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'672 x AgentTesla, 19'489 x Formbook, 12'212 x SnakeKeylogger)
ssdeep 6144:Ul6bPXhLApfpZrhD9aEWDnYb7HN739QbY+TdoPFzW6:ImhApLhD9aHn0t7AY+TdoPFzW6
Threatray 650 similar samples on MalwareBazaar
TLSH T168748C1377A8E93FD1FD073AF43246164BB1D447BA26E3AB5A5855B82C133868D423B3
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 jstrosch
Tags:.NET exe MSIL QuasarRAT


Avatar
jstrosch
Found at hxxp://45.141.151[.]174/Client-built.exe by #subcrawl

Intelligence

File Origin
# of uploads :
2
# of downloads :
58
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2025-08-15 01:13:29 UTC
Tags:
evasion quasar rat remote
Link:
https://app.any.run/tasks/faa0c512-5db3-4fc6-8f2b-0e9f572fd17d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/21391/
Detection(s):
Win.Packed.Generic-9829635-0
Create hunting rule

Win.Packed.Generic-9830106-0
Create hunting rule

Win.Packed.QuasarRAT-10012744-0
Create hunting rule

Win.Trojan.Generic-6295765-0
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Win.Malware.Generic-6623004-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=689de11048c64d68735c6133
Tags:
dropper quasar word remo
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
Sending a custom TCP request
Verdict:
Malicious
Labled as:
MSIL.PasswordStealerA.Generic
Link:
https://www.hybrid-analysis.com/sample/4090ddde1d1ffb846bd2acf0e0f6b355ea151e0b38c33f029049ac6e93919043
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cda9c424-4fc9-4d8b-9439-40c585f72165
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4090ddde1d1ffb846bd2acf0e0f6b355ea151e0b38c33f029049ac6e93919043
Verdict:
QuasarRat
YARA:
16 match(es)
Tags:
.Net Executable Malicious PE (Portable Executable) QuasarRat RAT SOS: 0.61 Win 32 Exe x86
Malware Config
C2 Extraction:
PORT: 1
CNC: 45.141.151.174
Link:
https://app.malva.re/file/b65f70b2181be52f792520cf30325763
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4090ddde1d1ffb846bd2acf0e0f6b355ea151e0b38c33f029049ac6e93919043/
Verdict:
Malicious
Threat:
Family.QUASAR
Link:
https://tip.neiki.dev/file/4090ddde1d1ffb846bd2acf0e0f6b355ea151e0b38c33f029049ac6e93919043
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2025-08-14 13:07:47 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
33 of 38 (86.84%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=icin3xq5d75yi26svtyob5vtkxvbkhqlhdbt6auqjgwg5e4rsbbq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
0aa2b99b072736a522905c80505e8bfb45f545ee4d4f5a2fc02fb8f163b44225
QuasarRAT
3240ba805b47c8113426171d02796e776b782cbd76560c024cbea07fbe519d7d
QuasarRAT
3f7c3e6ad47622eb559c923c12fe588fe4bf14bff307fafbcfc1b1fb08f64457
QuasarRAT
4090ddde1d1ffb846bd2acf0e0f6b355ea151e0b38c33f029049ac6e93919043
QuasarRAT
8a54d056aeda3294b96434794bfc06246f4d88585773b0da3fdd1aebdae80da4
QuasarRAT
e61ed0d2ac83d2875180b1a33e04834aa6ca7dba7a5663e8d6e65a4482537576
QuasarRAT
error
QuasarRAT
+ 640 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 discovery spyware trojan
Link:
https://tria.ge/reports/250814-qgh4rshj4x/
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:
45.141.151.174:1604
Verdict:
Malicious
Tags:
rat quasar_rat vermin Win.Packed.Generic-9829635-0 AZORult Qasar_Rat External_IP_Lookup VoidRat
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/71e22cbb-022f-4a41-bd2f-08e0d33b3db3
Unpacked files
SH256 hash:
4090ddde1d1ffb846bd2acf0e0f6b355ea151e0b38c33f029049ac6e93919043
MD5 hash:
b65f70b2181be52f792520cf30325763
SHA1 hash:
24e11166c17a825c054a44ab50b0e27ee2c02d49
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/1c8c518a-8cea-432c-a0da-d8d3b0610c07/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4090ddde1d1f/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/4090ddde1d1ffb846bd2acf0e0f6b355ea151e0b38c33f029049ac6e93919043

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.

Web download

QuasarRAT

Executable exe 4090ddde1d1ffb846bd2acf0e0f6b355ea151e0b38c33f029049ac6e93919043

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/21391/
  
URLhaus
https://urlhaus.abuse.ch/url/3558948/
  
URLhaus
https://urlhaus.abuse.ch/url/3558949/

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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