Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
23/02/2026, 15:58
General
- Target hobbylock.exe
- Size 64KB
- Sample260223-terjxaaw5e
- SHA256 e23c76c81ddaff57a4e5903770cabbd59b5280376aa28faa83c8c2da90f66c51
Malware Config
Extracted
-
asyncrat
-
1.0.7
-
HobbyVault
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hqqnoa.sa.com:8848
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hqqnoa.sa.com:8888
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hqqnoa.sa.com:4782
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hqqnoa.sa.com:443
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hqqnoa.sa.com:8080
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HobbyVault_CreatorMutex_v2117
-
delay
1
-
install
true
-
install_file
bibliovault.exe
-
install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Asyncrat family
- Async RAT payload 1 IoCs
- Executes dropped EXE 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Delays execution with timeout.exe 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 19 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 5 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\hobbylock.exe"C:\Users\Admin\AppData\Local\Temp\hobbylock.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "bibliovault" /tr '"C:\Users\Admin\AppData\Roaming\bibliovault.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "bibliovault" /tr '"C:\Users\Admin\AppData\Roaming\bibliovault.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
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-
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB7.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\bibliovault.exe"C:\Users\Admin\AppData\Roaming\bibliovault.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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-
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C:\Users\Admin\AppData\Roaming\bibliovault.exe"C:\Users\Admin\AppData\Roaming\bibliovault.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmpB7.tmp.bat
bibliovault.exe
memory/2372-15-0x0000000001590000-0x000000000159C000-memory.dmp
memory/2372-16-0x00000000015A0000-0x00000000015B2000-memory.dmp
memory/4416-0-0x0000000000CB0000-0x0000000000CC6000-memory.dmp
memory/4416-1-0x000000001BAA0000-0x000000001BAB0000-memory.dmp
memory/4416-6-0x00000000013E0000-0x00000000013EC000-memory.dmp
memory/4416-7-0x00000000013F0000-0x0000000001402000-memory.dmp
memory/4504-13-0x0000000002B10000-0x0000000002B1C000-memory.dmp
memory/4504-14-0x0000000002C50000-0x0000000002C62000-memory.dmp