MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6e4f9663e0f5132a1213276c30bdbe5144d07b26edb65126d479c525128cf432. 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: 18


Intelligence 18 IOCs YARA 28 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6e4f9663e0f5132a1213276c30bdbe5144d07b26edb65126d479c525128cf432
SHA3-384 hash: 7e94f87d5d046f49f6517f5c3f9019fb6db25831ebf9e5cd84f638cde505161f05ebd137506ea453b0730c106aaffc4f
SHA1 hash: b0c433c5c8e0f9a198fc31019fb587a2c9ae919d
MD5 hash: 5ee45764082ef60c997530a1b94233b8
humanhash: wisconsin-cola-uncle-beryllium
File name:Client.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'285'004 bytes
First seen:2025-11-22 23:58:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'672 x AgentTesla, 19'489 x Formbook, 12'212 x SnakeKeylogger)
ssdeep 49152:5vlt62XlaSFNWPjljiFa2RoUYIoTxNESETk/i0LoGdrtyTHHB72eh2NT:5vX62XlaSFNWPjljiFXRoUYIsxi67t
Threatray 1'521 similar samples on MalwareBazaar
TLSH T1DBE55B143BF85F23E1BBE273D5B0041667F0E82AB3A3EB1B5191677E1C53B5058426AB
TrID 46.3% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
19.7% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
10.4% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
6.6% (.EXE) Win64 Executable (generic) (10522/11/4)
4.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Magika pebin
Reporter Hexastrike
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
27
Origin country :
IE IE
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
Client.exe
Verdict:
Malicious activity
Analysis date:
2025-11-23 03:37:59 UTC
Tags:
quasar
Link:
https://app.any.run/tasks/b8a5dea2-c399-46a0-ad46-992f475dc6f6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarStealer
Create hunting rule
Link:
https://www.capesandbox.com/analysis/39512/
Detection(s):
Win.Malware.Generic-9883083-0
Create hunting rule

Win.Malware.Msilheracles-9900242-0
Create hunting rule

Win.Packed.Downeks-6898097-0
Create hunting rule

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=692258c58cf6736ec0b0dd4e
Tags:
infosteal quasar
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 infostealer obfuscated obfuscated reconnaissance stealer
Link:
https://www.filescan.io/uploads/692254b2eecb08e4aa452536/reports/053b6558-3451-49d8-b28a-3a916addd04d/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/6e4f9663e0f5132a1213276c30bdbe5144d07b26edb65126d479c525128cf432
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-18T20:43:00Z UTC
Last seen:
2025-11-23T00:04:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/6e4f9663e0f5132a1213276c30bdbe5144d07b26edb65126d479c525128cf432/results?tab=lookup
Malware family:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/70af8f4c-5ddb-4ad0-9d88-4182b0760410
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/6e4f9663e0f5132a1213276c30bdbe5144d07b26edb65126d479c525128cf432
Verdict:
inconclusive
YARA:
13 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE Memory-Mapped (Dump) SOS: 0.31
Link:
https://app.malva.re/file/5ee45764082ef60c997530a1b94233b8
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6e4f9663e0f5132a1213276c30bdbe5144d07b26edb65126d479c525128cf432/
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2025-11-19 01:32:59 UTC
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nzhzmy7a6ujsueqte5wdbpn6kfcna6zg5w3fcjwuphcskeum6qza._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
1888dad764c782fdb3d8cfce0916fd197e645231f3cdc28e4d45d1558a0935db
QuasarRAT
49c0cc5f278c0e3c372a9ef3029697cd36da5cf25ff2f817bbf4256dd3f1f4df
QuasarRAT
8056a37cd65f2a24c5ddb99843cc744d8f78f7befd95dcd77f9c4c5bfc6f45d3
QuasarRAT
899b761a925b9b0608446fc4ed240888387bdc707213a379f3219cc1af1e09b0
QuasarRAT
error
QuasarRAT
f5e49e7ec748a0b4cfdecdddc5fdfaf9f5b7f38f73e962a4017b402ba8143d02
QuasarRAT
f99ecbd9f26048dbb962f1711199e5f5d00ac8bbd87f539dd5a99631a15fadba
QuasarRAT
+ 1'511 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:test discovery
Link:
https://tria.ge/reports/251123-asle9s1qek/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Browser Information Discovery
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Malware Config
C2 Extraction:
127.0.0.1:4782
Verdict:
Unknown
Tags:
rat quasar_rat stealer
YARA:
MAL_QuasarRAT_May19_1 malware_windows_quasarrat win_quasar_rat_client MALWARE_Win_Quasarstealer
Link:
https://app.threat.zone/submission/1efc6b89-77fd-4c7d-a93a-8b65c45789ea
Unpacked files
SH256 hash:
6e4f9663e0f5132a1213276c30bdbe5144d07b26edb65126d479c525128cf432
MD5 hash:
5ee45764082ef60c997530a1b94233b8
SHA1 hash:
b0c433c5c8e0f9a198fc31019fb587a2c9ae919d
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/53ed3b41-4397-4ccd-aa4d-f2a74ad56d8d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.84
Link:
https://yomi.yoroi.company/submissions/6e4f9663e0f5132a1213276c30bdbe5144d07b26edb65126d479c525128cf432

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
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:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
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:Lumma_Stealer_Detection
Create hunting rule
Author:ashizZz
Description:Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/
Rule name:MALWARE_Win_QuasarStealer
Create hunting rule
Author:ditekshen
Description:Detects Quasar infostealer
Rule name:MAL_QuasarRAT_May19_1
Create hunting rule
Description:Detects QuasarRAT malware
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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
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:quasarrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:quasarrat_kingrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RC6_Constants
Create hunting rule
Author:chort (@chort0)
Description:Look for RC6 magic constants in binary
Reference:https://twitter.com/mikko/status/417620511397400576
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
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:Windows_Generic_Threat_803feff4
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.

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/39512/

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