MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b34bfe533bd70c3f94e4f5726f6bdc2ee1c9cb5d32156ea8441e0e4623db91af. 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 32 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b34bfe533bd70c3f94e4f5726f6bdc2ee1c9cb5d32156ea8441e0e4623db91af
SHA3-384 hash: 842a9ba76608a58b984f256a08e4d55462a3b41bddace80aee19156a3bbdb75e485b16052ca5cc858af1a2ec5b225057
SHA1 hash: ae5307f42b669496d04dd4ea0eb674700904f723
MD5 hash: 60e92ccc03d80353ae0452ceb2c99fa0
humanhash: mike-alabama-hotel-steak
File name:Client.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:356'352 bytes
First seen:2025-11-23 00:05:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'854 x AgentTesla, 19'783 x Formbook, 12'304 x SnakeKeylogger)
ssdeep 6144:g7NHXf500MxKlLUWLD3bwMgdlQF2A7hUYPyVbJe:Kd50alLVMnlK2A7qYPGbJe
Threatray 757 similar samples on MalwareBazaar
TLSH T1FB748C1333A8D63BD1BE577AF53606044BB1D447BA16F38F9A5896B82C133868D913B3
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 :
1
# of downloads :
42
Origin country :
IE IE
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
https://workupload.com/archive/dzKRVHxvaP
Verdict:
Malicious activity
Analysis date:
2025-11-05 17:57:43 UTC
Tags:
susp-clipboard clickfix possible-phishing quasar rat evasion remote xworm
Link:
https://app.any.run/tasks/5a04c0e6-3600-4768-a263-432e005f8bd9

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/39763/
Detection(s):
Win.Packed.Generic-9829635-0
Create hunting rule

Win.Trojan.Generic-9829636-0
Create hunting rule

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

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

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

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

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6922607ab6ee81118d2c68d9
Tags:
keylogger dropper quasar msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Creating a file
Setting a keyboard event handler
Creating a window
Unauthorized injection to a recently created process
Connection attempt to an infection source
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm base64 byteguard fingerprint infostealer keylogger lolbin obfuscated obfuscated packed quasar quasarrat rat reconnaissance runonce stealer vbnet vermin xrat
Link:
https://www.filescan.io/uploads/69225a925d3feebe12d7d9e4/reports/0347d499-12a1-48c0-88dc-a6aaa0ae31ba/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b34bfe533bd70c3f94e4f5726f6bdc2ee1c9cb5d32156ea8441e0e4623db91af
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-05T14:44:00Z UTC
Last seen:
2025-11-09T09:36:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/b34bfe533bd70c3f94e4f5726f6bdc2ee1c9cb5d32156ea8441e0e4623db91af/results?tab=lookup
Gathering data
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b34bfe533bd70c3f94e4f5726f6bdc2ee1c9cb5d32156ea8441e0e4623db91af
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: 1604
CNC: 85.121.4.92
Link:
https://app.malva.re/file/60e92ccc03d80353ae0452ceb2c99fa0
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b34bfe533bd70c3f94e4f5726f6bdc2ee1c9cb5d32156ea8441e0e4623db91af/
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2025-11-05 21:44:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
31 of 36 (86.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wnf74uz324gd7fhe6vzg6264f3q4ts25gikw5kcedyhemi63sgxq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
032937d641384a9ba29a750eae23157efdcc05ce1e4b43403b8787a72611f8dd
QuasarRAT
2f3c0ed245f51ba046dc425e32409890f029a235cf0cc4330c5088bc1465053d
QuasarRAT
eeb612949e0c08f8aed99e6ac2dd4351336904bcb1961fdd9295e924bc3fbb6d
QuasarRAT
error
QuasarRAT
+ 747 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/251123-a7q93awlas/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Looks up external IP address via web service
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
85.121.4.92:1604
Verdict:
Unknown
Tags:
rat quasar_rat vermin
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/b48d925c-c5f5-4c82-98f7-ba180d14e159
Unpacked files
SH256 hash:
b34bfe533bd70c3f94e4f5726f6bdc2ee1c9cb5d32156ea8441e0e4623db91af
MD5 hash:
60e92ccc03d80353ae0452ceb2c99fa0
SHA1 hash:
ae5307f42b669496d04dd4ea0eb674700904f723
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/35ad82b5-8018-4d52-8891-c67a26b35f4a/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b34bfe533bd7/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/b34bfe533bd70c3f94e4f5726f6bdc2ee1c9cb5d32156ea8441e0e4623db91af

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: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_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
Cape
https://www.capesandbox.com/analysis/39763/

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