Analysis
- max time kernel
149s - max time network
153s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260629-en - resource tags
- submitted
02/07/2026, 02:01
General
- Target ucvxbkcvbjm.exe
- Size 45KB
- Sample260702-cftbfsaz3v
- SHA256 9ac4c3fbd84a798d8171d0cc65697b19b17abf0c54e825cd8a173f0158cb93c4
Malware Config
Extracted
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asyncrat
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0.5.8
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Admin
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bimhong.net:80
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bimhong.net:443
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www.bimhong.net:80
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www.bimhong.net:443
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ssh.bimhong.net:80
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ssh.bimhong.net:443
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6gWTLUWZWQPA
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delay
3
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install
true
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install_file
ucvxbkcvbjm.exe
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install_folder
%AppData%
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- 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).
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- 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 29 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\ucvxbkcvbjm.exe"C:\Users\Admin\AppData\Local\Temp\ucvxbkcvbjm.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ucvxbkcvbjm" /tr '"C:\Users\Admin\AppData\Roaming\ucvxbkcvbjm.exe"' & exit2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "ucvxbkcvbjm" /tr '"C:\Users\Admin\AppData\Roaming\ucvxbkcvbjm.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC81D.tmp.bat""2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\ucvxbkcvbjm.exe"C:\Users\Admin\AppData\Roaming\ucvxbkcvbjm.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
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C:\Users\Admin\AppData\Roaming\ucvxbkcvbjm.exe"C:\Users\Admin\AppData\Roaming\ucvxbkcvbjm.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmpC81D.tmp.bat
ucvxbkcvbjm.exe
memory/5904-0-0x00000000749B2000-0x00000000749B3000-memory.dmp
memory/5904-1-0x0000000000A80000-0x0000000000A92000-memory.dmp
memory/5904-2-0x00000000749A0000-0x000000007515C000-memory.dmp
memory/5904-3-0x0000000005640000-0x00000000056DC000-memory.dmp
memory/5904-9-0x00000000749A0000-0x000000007515C000-memory.dmp
memory/6460-12-0x00000000749A0000-0x000000007515C000-memory.dmp
memory/6460-14-0x00000000749A0000-0x000000007515C000-memory.dmp