Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
13/03/2024, 02:05
General
- Target 1744-69-0x0000000008FF0000-0x0000000009006000-memory.exe
- Size 88KB
- Sample240313-chwvcsbe95
- SHA256 c6f12f257c2f60ae52265ebc64e97b60662c89ec70bb1c5276365ca69218043a
Malware Config
Extracted
-
asyncrat
-
5.0.5
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Venom Clients
-
127.0.0.1:4489
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Venom_RAT_HVNC_Mutex_Venom RAT_HVNC
-
delay
1
-
install
true
-
install_file
se.exe
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install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 23 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 10 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\1744-69-0x0000000008FF0000-0x0000000009006000-memory.exe"C:\Users\Admin\AppData\Local\Temp\1744-69-0x0000000008FF0000-0x0000000009006000-memory.exe"1⤵
- Checks computer location settings
- 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 "se" /tr '"C:\Users\Admin\AppData\Roaming\se.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "se" /tr '"C:\Users\Admin\AppData\Roaming\se.exe"'3⤵
- Creates scheduled task(s)
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-
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp42D5.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\se.exe"C:\Users\Admin\AppData\Roaming\se.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
tmp42D5.tmp.bat
se.exe
memory/1884-0-0x00000000006B0000-0x00000000006C6000-memory.dmp
memory/1884-1-0x00007FFE0E910000-0x00007FFE0F3D1000-memory.dmp
memory/1884-2-0x000000001B360000-0x000000001B370000-memory.dmp
memory/1884-7-0x00007FFE2C930000-0x00007FFE2CB25000-memory.dmp
memory/1884-8-0x00007FFE0E910000-0x00007FFE0F3D1000-memory.dmp
memory/4980-13-0x00007FFE0E090000-0x00007FFE0EB51000-memory.dmp
memory/4980-14-0x000000001B200000-0x000000001B210000-memory.dmp
memory/4980-15-0x00007FFE0E090000-0x00007FFE0EB51000-memory.dmp
memory/4980-16-0x000000001B200000-0x000000001B210000-memory.dmp