Analysis
- max time kernel
134s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240709-en - resource tags
- submitted
30/07/2024, 01:54
General
- Target 70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
- Size 47KB
- Sample240730-cbqprswemf
- SHA256 70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd
Malware Config
Extracted
-
asyncrat
-
0.5.8
-
Default
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176.111.174.140:6606
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176.111.174.140:7707
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176.111.174.140:8808
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PWhSiRkcxVoa
-
delay
3
-
install
true
-
install_file
svchost.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).
- 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 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 23 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe"C:\Users\Admin\AppData\Local\Temp\70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe"1⤵
- Checks computer location settings
- 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 "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.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 "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.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\tmp7908.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\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
tmp7908.tmp.bat
svchost.exe
memory/2628-13-0x0000000075310000-0x0000000075AC0000-memory.dmp
memory/2628-14-0x0000000075310000-0x0000000075AC0000-memory.dmp
memory/2628-17-0x00000000063B0000-0x0000000006954000-memory.dmp
memory/2628-18-0x0000000005A40000-0x0000000005AA6000-memory.dmp
memory/4516-0-0x00000000753AE000-0x00000000753AF000-memory.dmp
memory/4516-1-0x0000000000C00000-0x0000000000C12000-memory.dmp
memory/4516-2-0x00000000753A0000-0x0000000075B50000-memory.dmp
memory/4516-3-0x0000000005630000-0x00000000056CC000-memory.dmp
memory/4516-8-0x00000000753A0000-0x0000000075B50000-memory.dmp