Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
24/04/2026, 14:18
General
- Target bomaynacmay.exe
- Size 3.1MB
- Sample260424-rmse3ads9k
- SHA256 0dca174fd3f33caf4224d2ea8189622d90cd58e90cf51e97b4a9ca36980897d5
Malware Config
Extracted
-
quasar
-
1.4.1
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sbtmwfta.uk.com
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sbtmwfta.uk.com:80
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sbtmwfta.uk.com:8080
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sbtmwfta.uk.com:443
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sbtmwfta.uk.com:8443
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dc84e7d7-1880-44d7-b9b1-977a69077998
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encryption_key
576D1496F563366ADEBFC3046D6584BB4AD91241
-
install_name
Client.exe
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key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
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log_directory
Logs
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reconnect_delay
10
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startup_key
https://sbtmwfta.uk.com
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\bomaynacmay.exe"C:\Users\Admin\AppData\Local\Temp\bomaynacmay.exe"1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "https://sbtmwfta.uk.com" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "https://sbtmwfta.uk.com" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exeC:\Users\Admin\AppData\Roaming\SubDir\Client.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe
memory/2164-15-0x000000001B4B0000-0x000000001B4C2000-memory.dmp
memory/2164-13-0x00000000013F0000-0x00000000013FC000-memory.dmp
memory/2164-14-0x000000001B7A0000-0x000000001B8BE000-memory.dmp
memory/3420-18-0x0000000002B80000-0x0000000002B8C000-memory.dmp
memory/3420-10-0x000000001B640000-0x000000001B650000-memory.dmp
memory/3420-16-0x000000001C730000-0x000000001C780000-memory.dmp
memory/3420-17-0x000000001C840000-0x000000001C8F2000-memory.dmp
memory/3420-20-0x000000001B610000-0x000000001B622000-memory.dmp
memory/3420-19-0x000000001B750000-0x000000001B86E000-memory.dmp
memory/3420-21-0x000000001B640000-0x000000001B650000-memory.dmp
memory/4268-7-0x000000001B420000-0x000000001B53E000-memory.dmp
memory/4268-9-0x0000000000F30000-0x0000000000F42000-memory.dmp
memory/4268-6-0x0000000000C60000-0x0000000000C6C000-memory.dmp
memory/4268-1-0x000000001B410000-0x000000001B420000-memory.dmp
memory/4268-0-0x0000000000220000-0x0000000000544000-memory.dmp