MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d42ac4e3da7e1aa7ae41d0547c0cdcf1e30300fb2ea96cea42bb1d43a5000b27. 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 34 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d42ac4e3da7e1aa7ae41d0547c0cdcf1e30300fb2ea96cea42bb1d43a5000b27
SHA3-384 hash: ea7a472405c313f8ccf978511888034d487b1aeb74a46b94aaccba5fe4c00011c52b52f9008e911f959538a571252173
SHA1 hash: 3717fce647ce279deeb97a1f27e51daa1cdcde4b
MD5 hash: 32fd5deb0e6f67f46fc55369fc00879a
humanhash: saturn-early-bravo-cup
File name:file
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:356'352 bytes
First seen:2025-08-25 18:19:42 UTC
Last seen:2025-08-27 07:29:33 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:/l6bPXhLApfpBjoy4NKXoJ1jNbE9ZrKsKXgRm:9mhApAykKXSj69QsKXgRm
TLSH T13E748D1373A4EA3BE1FE1B3AE03207145BB1D857761AE3CB5A5855B92D133868D813B3
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 :
3
# of downloads :
75
Origin country :
CZ CZ
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2025-08-25 18:22:52 UTC
Tags:
quasar rat evasion remote
Link:
https://app.any.run/tasks/18a799e9-b530-4a83-a357-5c2daa7bd447

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/23488/
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=68aca9933e988eb6ab82b3e5
Tags:
vmdetect 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
Setting a keyboard event handler
Creating a file in the %AppData% subdirectories
Creating a window
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm fingerprint infostealer keylogger lolbin obfuscated obfuscated obfuscated quasar rat runonce stealer stealer threat vbnet vermin xrat
Link:
https://www.filescan.io/uploads/68aca98f7137d684583c2166/reports/de1f7c76-36c4-46b9-ae8d-a9927808b4fd/overview
Verdict:
Malicious
Labled as:
MSIL.PasswordStealerA.Generic
Link:
https://www.hybrid-analysis.com/sample/d42ac4e3da7e1aa7ae41d0547c0cdcf1e30300fb2ea96cea42bb1d43a5000b27
Verdict:
Malicious
File Type:
exe x32
Link:
https://opentip.kaspersky.com/d42ac4e3da7e1aa7ae41d0547c0cdcf1e30300fb2ea96cea42bb1d43a5000b27/results?tab=lookup
Malware family:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2b7e1f87-3a34-47e7-8b99-d1e4d467a2ce
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d42ac4e3da7e1aa7ae41d0547c0cdcf1e30300fb2ea96cea42bb1d43a5000b27
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: 1
CNC: 45.141.151.174
Link:
https://app.malva.re/file/32fd5deb0e6f67f46fc55369fc00879a
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d42ac4e3da7e1aa7ae41d0547c0cdcf1e30300fb2ea96cea42bb1d43a5000b27/
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2025-08-25 18:20:56 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
24 of 24 (100.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2qvmjy62pynkplsb2bkhydg46hrqgah3f2uwz2scxmouhjiabmtq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
error
QuasarRAT
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 discovery spyware trojan
Link:
https://tria.ge/reports/250825-wy7rcadk41/
Behaviour
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
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 External_IP_Lookup VoidRat 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/0668a74e-3783-4819-a383-ea1bade5bf33
Unpacked files
SH256 hash:
d42ac4e3da7e1aa7ae41d0547c0cdcf1e30300fb2ea96cea42bb1d43a5000b27
MD5 hash:
32fd5deb0e6f67f46fc55369fc00879a
SHA1 hash:
3717fce647ce279deeb97a1f27e51daa1cdcde4b
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/af472790-f125-4a5f-be53-a6aa981c618c/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d42ac4e3da7e/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/d42ac4e3da7e1aa7ae41d0547c0cdcf1e30300fb2ea96cea42bb1d43a5000b27

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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 d42ac4e3da7e1aa7ae41d0547c0cdcf1e30300fb2ea96cea42bb1d43a5000b27

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3558949/
Cape
Cape
https://www.capesandbox.com/analysis/23488/
  
URLhaus
https://urlhaus.abuse.ch/url/3558948/

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