Analysis
- max time kernel
144s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
03/08/2024, 02:24
General
- Target e9837fc1d609e0084452590c09746a89af73ec6abf45a26ab58a4d48c9ebceac.exe
- Size 1007KB
- Sample240803-cv2w5szerp
- SHA256 e9837fc1d609e0084452590c09746a89af73ec6abf45a26ab58a4d48c9ebceac
Malware Config
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.
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 6 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 16 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\e9837fc1d609e0084452590c09746a89af73ec6abf45a26ab58a4d48c9ebceac.exe"C:\Users\Admin\AppData\Local\Temp\e9837fc1d609e0084452590c09746a89af73ec6abf45a26ab58a4d48c9ebceac.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout 52⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout 53⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout 52⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout 53⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
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-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"2⤵
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/3364-1054-0x00000000013C0000-0x00000000013DB000-memory.dmp
memory/3364-1055-0x0000000074EBE000-0x0000000074EBF000-memory.dmp
memory/3364-1056-0x00000000059D0000-0x00000000059EA000-memory.dmp
memory/3364-1057-0x0000000074EB0000-0x0000000075660000-memory.dmp
memory/3364-1058-0x0000000074EB0000-0x0000000075660000-memory.dmp
memory/3364-1061-0x0000000074EB0000-0x0000000075660000-memory.dmp
memory/3364-1060-0x0000000074EBE000-0x0000000074EBF000-memory.dmp
memory/3364-1059-0x0000000074EB0000-0x0000000075660000-memory.dmp
memory/4888-37-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-31-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-15-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-5-0x0000000074EB0000-0x0000000075660000-memory.dmp
memory/4888-51-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-55-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-69-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-67-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-65-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-63-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-61-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-59-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-57-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-53-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-49-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-47-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-45-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-43-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-41-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-39-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-3-0x0000000074EB0000-0x0000000075660000-memory.dmp
memory/4888-35-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-33-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-4-0x0000000005F30000-0x000000000601E000-memory.dmp
memory/4888-29-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-27-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-25-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-23-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-21-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-19-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-17-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-13-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-11-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-9-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-7-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-6-0x0000000005F30000-0x0000000006017000-memory.dmp
memory/4888-1042-0x0000000074EB0000-0x0000000075660000-memory.dmp
memory/4888-1043-0x0000000074EB0000-0x0000000075660000-memory.dmp
memory/4888-1044-0x0000000006170000-0x00000000061DE000-memory.dmp
memory/4888-1045-0x00000000061E0000-0x000000000622C000-memory.dmp
memory/4888-1046-0x0000000074EBE000-0x0000000074EBF000-memory.dmp
memory/4888-2-0x0000000074EB0000-0x0000000075660000-memory.dmp
memory/4888-1-0x00000000001E0000-0x00000000002E2000-memory.dmp
memory/4888-0-0x0000000074EBE000-0x0000000074EBF000-memory.dmp
memory/4888-1047-0x0000000074EB0000-0x0000000075660000-memory.dmp
memory/4888-1048-0x0000000007460000-0x0000000007A04000-memory.dmp
memory/4888-1049-0x0000000005700000-0x0000000005754000-memory.dmp
memory/4888-1053-0x0000000074EB0000-0x0000000075660000-memory.dmp