Analysis
- max time kernel
70s - max time network
152s - platform
windows10_x64 - resource
win10v20210408 - submitted
17/09/2021, 09:41
General
- Target Confirmation Transfer Copy MT103-Ref#00013026.exe
- Size 500KB
- Sample210917-lns54afbh4
- SHA256 62379a86fa09b99154d4c125dd89ce9944b81e4663767cce7387e9e675e9649c
Malware Config
Extracted
-
asyncrat
-
0.5.7B
-
Default
-
fresh01.ddns.net:2245
-
fresh01.ddns.net:2256
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fresh01.ddns.net:2257
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AsyncMutex_6SI8OkPnk
-
anti_vm
false
-
bsod
false
-
delay
3
-
install
false
-
install_folder
%AppData%
-
pastebin_config
null
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
- Async RAT payload 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy MT103-Ref#00013026.exe"C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy MT103-Ref#00013026.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ffOhNhqO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4145.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy MT103-Ref#00013026.exe"C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy MT103-Ref#00013026.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy MT103-Ref#00013026.exe"C:\Users\Admin\AppData\Local\Temp\Confirmation Transfer Copy MT103-Ref#00013026.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/632-114-0x0000000000920000-0x0000000000921000-memory.dmp
memory/632-116-0x0000000005890000-0x0000000005891000-memory.dmp
memory/632-117-0x0000000005390000-0x0000000005391000-memory.dmp
memory/632-118-0x0000000005320000-0x0000000005321000-memory.dmp
memory/632-119-0x0000000005390000-0x000000000588E000-memory.dmp
memory/632-120-0x0000000005840000-0x0000000005847000-memory.dmp
memory/632-121-0x00000000076C0000-0x00000000076C1000-memory.dmp
memory/632-122-0x0000000007AD0000-0x0000000007B14000-memory.dmp
memory/632-123-0x00000000076A0000-0x00000000076AF000-memory.dmp
memory/3140-125-0x0000000000400000-0x0000000000412000-memory.dmp
memory/3140-129-0x0000000005800000-0x0000000005801000-memory.dmp
memory/3140-132-0x0000000006460000-0x0000000006461000-memory.dmp