MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 feda854ecc1a6a8c56fb765c2964a5b2a9dbf1cff7ef9149b4e576d4a96e5269. 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: 14


Intelligence 14 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: feda854ecc1a6a8c56fb765c2964a5b2a9dbf1cff7ef9149b4e576d4a96e5269
SHA3-384 hash: 2eab9023f7bdf607b56ae4eefc9544726f10d1d75e1d4f9fc954969a74e31b6b7dc934a778313fa644b3b316c03cc752
SHA1 hash: b90b3742272a7525d946d86b204a7a8d8b7060ae
MD5 hash: 150cf2ff4d599a768dac8067d84df0e6
humanhash: three-texas-mirror-avocado
File name:STAZ520_Crypter_Install.bat
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:4'826'371 bytes
First seen:2025-11-03 16:44:17 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/x-msdos-batch
ssdeep 24576:gSmhiJ1p+CAKoqTkDozigaLQB/sOTPe/ouewUWsoWJ6O90sqNTr5bg6axTPZAJ2S:O
Threatray 106 similar samples on MalwareBazaar
TLSH T18F26DEE634A5BC94DDEFD25F84AE8B79B35E0682D707218A131F1D98466340F3A849CF
Magika batch
Reporter burger
Tags:bat QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
61
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
STAZ520_Crypter_Install.bat
Verdict:
Malicious activity
Analysis date:
2025-11-03 16:41:40 UTC
Tags:
evasion susp-powershell
Link:
https://app.any.run/tasks/732319fd-9d34-45da-9b14-970d894bc09f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/35175/
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6908dbdd706befaf4ecb6b4e
Tags:
ransomware dropper emotet sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching cmd.exe command interpreter
Launching a process
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Changing the Zone.Identifier stream
Creating a file
DNS request
Connection attempt
Сreating synchronization primitives
Creating a file in the %temp% subdirectories
Creating a process with a hidden window
Creating a window
Searching for synchronization primitives
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Running batch commands
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Suspicious
Labled as:
BAT/TrojanDropper.Agent
Link:
https://www.hybrid-analysis.com/sample/feda854ecc1a6a8c56fb765c2964a5b2a9dbf1cff7ef9149b4e576d4a96e5269
Verdict:
Malicious
File Type:
unix shell
First seen:
2025-11-03T14:10:00Z UTC
Last seen:
2025-11-04T14:28:00Z UTC
Hits:
~10
Detections:
Trojan.MSIL.Agent.sb Trojan-PSW.MSIL.Agent.sb Trojan.Win64.DonutInjector.sb Trojan.Win32.Shellcode.sb Trojan.Win32.Agent.sb HEUR:Backdoor.MSIL.Agent.gen Backdoor.Win32.Androm Backdoor.MSIL.Cardinal.sb Backdoor.MSIL.Agent.sb Trojan-Dropper.Win32.Injector.sb Trojan.Win64.Donut.sb Trojan.Win32.Vimditator.sb Trojan.PowerShell.Cobalt.sb Trojan.MSIL.Quasar.a Trojan.Win32.HTA.a HEUR:Trojan.BAT.Cobalt.gen PDM:Trojan.Win32.Generic
Link:
https://opentip.kaspersky.com/feda854ecc1a6a8c56fb765c2964a5b2a9dbf1cff7ef9149b4e576d4a96e5269/results?tab=lookup
Result
Threat name:
DonutLoader
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1807103
Signature
.NET source code contains potential unpacker
Benign windows process drops PE files
Bypasses PowerShell execution policy
Connects to many ports of the same IP (likely port scanning)
Creates a thread in another existing process (thread injection)
Creates autostart registry keys with suspicious names
Encrypted powershell cmdline option found
Found large BAT file
Found suspicious powershell code related to unpacking or dynamic code loading
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects code into the Windows Explorer (explorer.exe)
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Modifies the prolog of user mode functions (user mode inline hooks)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
Uses cmd line tools excessively to alter registry or file data
Writes to foreign memory regions
Yara detected DonutLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1807103 Sample: STAZ520_Crypter_Install.bat Startdate: 03/11/2025 Architecture: WINDOWS Score: 100 74 ipwho.is 2->74 86 Malicious sample detected (through community Yara rule) 2->86 88 Yara detected DonutLoader 2->88 90 .NET source code contains potential unpacker 2->90 92 9 other signatures 2->92 10 cmd.exe 1 2->10         started        13 cmd.exe 1 2->13         started        15 cmd.exe 2->15         started        signatures3 process4 signatures5 100 Suspicious powershell command line found 10->100 102 Uses cmd line tools excessively to alter registry or file data 10->102 104 Encrypted powershell cmdline option found 10->104 106 Bypasses PowerShell execution policy 10->106 17 cmd.exe 4 10->17         started        21 conhost.exe 10->21         started        23 cmd.exe 1 13->23         started        25 conhost.exe 13->25         started        27 cmd.exe 15->27         started        29 conhost.exe 15->29         started        process6 file7 60 C:\Users\user\...\e321775766cf4f3d.bat, DOS 17->60 dropped 80 Suspicious powershell command line found 17->80 82 Uses cmd line tools excessively to alter registry or file data 17->82 84 Encrypted powershell cmdline option found 17->84 31 powershell.exe 23 17->31         started        34 powershell.exe 11 17->34         started        36 reg.exe 1 1 17->36         started        44 3 other processes 17->44 38 powershell.exe 15 23->38         started        40 conhost.exe 23->40         started        47 2 other processes 23->47 42 conhost.exe 27->42         started        49 3 other processes 27->49 signatures8 process9 file10 108 Injects code into the Windows Explorer (explorer.exe) 31->108 110 Writes to foreign memory regions 31->110 112 Creates a thread in another existing process (thread injection) 31->112 51 explorer.exe 74 29 31->51 injected 56 csc.exe 3 31->56         started        114 Found suspicious powershell code related to unpacking or dynamic code loading 34->114 116 Creates autostart registry keys with suspicious names 36->116 72 C:\Users\user\AppData\...\ps_f8c40b9e.ps1, Unicode 44->72 dropped signatures11 process12 dnsIp13 76 147.185.221.212, 15609, 49722, 49724 SALSGIVERUS United States 51->76 78 ipwho.is 15.204.213.5, 443, 49723, 49728 HP-INTERNET-ASUS United States 51->78 62 C:\Users\user\AppData\Roaming\...\SharpDX.dll, PE32 51->62 dropped 64 C:\Users\user\...\SharpDX.Mathematics.dll, PE32 51->64 dropped 66 C:\Users\user\...\SharpDX.Direct3D11.dll, PE32 51->66 dropped 70 11 other files (none is malicious) 51->70 dropped 94 System process connects to network (likely due to code injection or exploit) 51->94 96 Benign windows process drops PE files 51->96 98 Hides that the sample has been downloaded from the Internet (zone.identifier) 51->98 68 C:\Users\user\AppData\Local\...\ycpelhp2.dll, PE32 56->68 dropped 58 cvtres.exe 1 56->58         started        file14 signatures15 process16
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/feda854ecc1a6a8c56fb765c2964a5b2a9dbf1cff7ef9149b4e576d4a96e5269
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/feda854ecc1a6a8c56fb765c2964a5b2a9dbf1cff7ef9149b4e576d4a96e5269/
Verdict:
Malicious
Threat:
Family.DONUTLOADER
Link:
https://tip.neiki.dev/file/feda854ecc1a6a8c56fb765c2964a5b2a9dbf1cff7ef9149b4e576d4a96e5269
Threat name:
Script-BAT.Packed.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-11-03 16:44:13 UTC
File Type:
Text (Batch)
AV detection:
6 of 38 (15.79%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=73niktwmdjviyvx3ozocszffwku5x4op67xzcsnu4v3njklokjuq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
donutloader
Create hunting rule
Similar samples:
12ce3769229d84d3e5656fa6d96fbfaefe3a844c5124378c30de5139031dc6b2
QuasarRAT
1c66ad71b16931d7d2d5c4f86fd5abc1dc07afbc32e112e29ba424a8f302d5f6
QuasarRAT
37565b55aafaf0e15de3bbc9ee91d4c3f42f86d569c41048c92f5dc380d11e77
QuasarRAT
6a95f54230338584556d3dc370e1da5d4e326aab83c20413d446ab71a8f43d37
QuasarRAT
9614ef4ee182fb6ee147ba8ebad8e68679010e792b0fd4108127e28538791b74
QuasarRAT
d3ef0e594e1984dfb2a32349c2ca01cecc9de210b3cc4358516a5ee5046b42f7
QuasarRAT
error
QuasarRAT
+ 96 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:donutloader family:quasar adware defense_evasion execution loader persistence spyware trojan
Link:
https://tria.ge/reports/251103-t8596atjem/
Behaviour
Checks SCSI registry key(s)
Delays execution with timeout.exe
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
NTFS ADS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Views/modifies file attributes
Adds Run key to start application
Enumerates connected drives
Boot or Logon Autostart Execution: Active Setup
Command and Scripting Interpreter: PowerShell
Detects DonutLoader
DonutLoader
Donutloader family
Quasar RAT
Quasar family
Quasar payload
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/feda854ecc1a6a8c56fb765c2964a5b2a9dbf1cff7ef9149b4e576d4a96e5269

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:Base64_Encoded_Powershell_Directives
Create hunting rule
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:SUSP_Base64
Create hunting rule
Author:Eslam Hassan
Description:Detects hex encoded code that has been base64 encoded
Reference:Internal Research
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)

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/35175/

Comments