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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b28e3757d340dbebfe720d7118fb575416f2fdf0ae88c8618dadc1d97e22643a. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b28e3757d340dbebfe720d7118fb575416f2fdf0ae88c8618dadc1d97e22643a
SHA3-384 hash: adb2316412543c9f69a1236f347bd96eddf609dd0c6b842b0aad6c8bc30b95048c92a31415cd1b8027fd695488c86d63
SHA1 hash: e0af1685b5340f70f4ce3dc33e8226be6dccc321
MD5 hash: 20a894221d6a9cdc9369ca81b5a5f628
humanhash: zulu-bacon-iowa-edward
File name:b28e3757d340dbebfe720d7118fb575416f2fdf0ae88c8618dadc1d97e22643a
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:909'824 bytes
First seen:2026-10-19 07:45:44 UTC
Last seen:Never
File type:Executable exe
MIME type:application/vnd.microsoft.portable-executable
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'287 x AgentTesla, 20'694 x Formbook, 12'401 x SnakeKeylogger)
ssdeep 12288:T7Xbiua9U4BTFTxQLp5YDvjpOeWtpSYdRin7IM3MNBaQe3hR5PmSHCmd:T7XbQ1jxwyDgeaXhM3MNchJPUmd
TLSH T10A15018963808D70CD6A9C3081311DB403775F5A3FA5F646AE78BC7337736DA28A6687
TrID 70.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.2% (.EXE) Win64 Executable (generic) (6522/11/2)
4.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon 70c0db4eea7ab0fc (36 x QuasarRAT, 6 x AveMariaRAT)
Reporter adrian__luca
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
79
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
ConfuserEx
Details
Link:
https://research.acce.ciphertechsolutions.com/results/2a3a38ed-93cd-45f2-9218-f702e3ff497a/
Malware family:
quasar
Create hunting rule
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-10-19 08:29:28 UTC
Tags:
ip-check quasar rat auto-reg
Link:
https://app.any.run/tasks/48127f6b-d93c-4bb5-b1b6-3e3926e79ea0

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/92700/
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ad5d8625a22ac805bd7db34
Tags:
autorun quasar
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Creating synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Launching a process
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file in the %temp% directory
Running batch commands
Creating a process with a hidden window
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun by creating a file
Gathering data
Verdict:
Malicious
Labled as:
Injector.Generic
Link:
https://www.hybrid-analysis.com/sample/b28e3757d340dbebfe720d7118fb575416f2fdf0ae88c8618dadc1d97e22643a
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-09-02T12:27:00Z UTC
Last seen:
2026-10-15T18:41:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/b28e3757d340dbebfe720d7118fb575416f2fdf0ae88c8618dadc1d97e22643a/results?tab=lookup
Malware family:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/05d362d0-6a3d-48ce-8ade-fbb35b882d5e
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b28e3757d340dbebfe720d7118fb575416f2fdf0ae88c8618dadc1d97e22643a
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.96 Win 32 Exe x86
Link:
https://app.malva.re/file/20a894221d6a9cdc9369ca81b5a5f628
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b28e3757d340dbebfe720d7118fb575416f2fdf0ae88c8618dadc1d97e22643a/
Threat name:
Win32.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2026-09-02 17:44:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wkhdov6tidn6x7tsbvyrr62xkqlpf7pqv2emqymnvxa5s7rcmq5a._file
Verdict:
malicious
Label(s):
QuasarRAT
Create hunting rule
Link:
https://reports.threatray.com/f00b6609-7df8-46a8-b5aa-669a6a022913
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:zoy1 discovery execution persistence spyware trojan
Link:
https://tria.ge/reports/261019-jlvvsszy3q/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Reads the TCP/IP host and domain name from the registry
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Looks up external IP address via web service
Executes dropped EXE
Family: Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
cns.grotominpgroup.pl:61541
sns.grotominpgroup.pl:61542
Unpacked files
SH256 hash:
b28e3757d340dbebfe720d7118fb575416f2fdf0ae88c8618dadc1d97e22643a
MD5 hash:
20a894221d6a9cdc9369ca81b5a5f628
SHA1 hash:
e0af1685b5340f70f4ce3dc33e8226be6dccc321
Link:
https://www.unpac.me/results/255fa206-9abc-452b-8a2d-d34afe78b110/
SH256 hash:
3707b607a9a042414f0b39501f88e467b5ab8cb6a27676ba09043e95082b5f1b
MD5 hash:
5b47dce9fcda284852f0124880b50e01
SHA1 hash:
994bcc6192c242850db9eb2a48137b95eed26a2b
Detections:
QuasarRAT
Create hunting rule
CN_disclosed_20180208_KeyLogger_1
Create hunting rule
cn_utf8_windows_terminal
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
INDICATOR_SUSPICIOUS_GENInfoStealer
Create hunting rule
MAL_QuasarRAT_May19_1
Create hunting rule
malware_windows_xrat_quasarrat
Create hunting rule
MALWARE_Win_QuasarRAT
Create hunting rule
Quasar
Create hunting rule
Quasar_RAT_1
Create hunting rule
Quasar_RAT_2
Create hunting rule
Vermin_Keylogger_Jan18_1
Create hunting rule
win_quasar_rat_client
Create hunting rule
win_quasarrat_j1
Create hunting rule
xRAT_1
Create hunting rule
Link:
https://www.unpac.me/results/255fa206-9abc-452b-8a2d-d34afe78b110/
Parent samples :
bcc66716c96ca9eae509bb88f3a9279630f56d51af2783e1e8424a169ca59fcc
c227559b02b4ae2e01b57334ae2385660fc12c374503b94c28761195ee25d5cb
b28e3757d340dbebfe720d7118fb575416f2fdf0ae88c8618dadc1d97e22643a
90e9fe6a776bbdc698f2b4506f1d6adf0efd0d259e04dc39a2e5c7446dae7f56
e8ecea762ebbdcc93495dfa3798f3fa98ce4ebd8d2b67fdf2ba030d097bd2c51
SH256 hash:
9b7785c07d63abe0717d98b488e96fefe826cdd800eda91c55d821c9fc375294
MD5 hash:
19e6d3fa7aa03ad6c0a6d7965db6fe9b
SHA1 hash:
f08e006df9a1acf2e5d3c33d542198470b275c76
Link:
https://www.unpac.me/results/255fa206-9abc-452b-8a2d-d34afe78b110/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b28e3757d340/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/b28e3757d340dbebfe720d7118fb575416f2fdf0ae88c8618dadc1d97e22643a

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
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:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.
Rule name:WIN_Malware_Unknown_ForgeAuto_6717780a_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects Unknown (pe, etat extrait)
Rule name:WIN_Malware_XWorm_ForgeAuto_6b06c990_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects XWorm (pe, etat extrait)

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/92700/

Comments