Analysis
- geolocation tags
- user interaction
yes - max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
15/04/2026, 04:04
General
- Target m76.exe
- Size 45KB
- Sample260415-em2yaaet5p
- SHA256 20059f985b4593f88335df1ce6c5d43fabeab5321467306bc28d06e231128b13
Malware Config
Extracted
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asyncrat
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0.5.8
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vjfjxh.sa.com
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vjfjxh.sa.com:80
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vjfjxh.sa.com:443
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vjfjxh.sa.com:8080
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vjfjxh.sa.com:8443
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vjfjxh.sa.com:3306
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https://vjfjxh.sa.com:80
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https://vjfjxh.sa.com:443
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https://vjfjxh.sa.com:8080
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https://vjfjxh.sa.com:8443
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https://vjfjxh.sa.com:3306
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Eb7WAfOZ8ywZ
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delay
3
-
install
true
-
install_file
m76.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
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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 23 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\m76.exe"C:\Users\Admin\AppData\Local\Temp\m76.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 "m76" /tr '"C:\Users\Admin\AppData\Roaming\m76.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 "m76" /tr '"C:\Users\Admin\AppData\Roaming\m76.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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-
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp2DD1.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\m76.exe"C:\Users\Admin\AppData\Roaming\m76.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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-
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C:\Users\Admin\AppData\Roaming\m76.exe"C:\Users\Admin\AppData\Roaming\m76.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
m76.exe.log
tmp2DD1.tmp.bat
m76.exe
memory/3212-13-0x0000000002860000-0x000000000286A000-memory.dmp
memory/3212-14-0x0000000004F30000-0x000000000502A000-memory.dmp
memory/4508-0-0x00000000008F0000-0x0000000000902000-memory.dmp
memory/4508-1-0x0000000005250000-0x0000000005260000-memory.dmp
memory/4508-2-0x0000000005400000-0x000000000549C000-memory.dmp
memory/4508-7-0x0000000005260000-0x000000000535A000-memory.dmp
memory/4804-15-0x0000000001770000-0x000000000177A000-memory.dmp
memory/4804-16-0x0000000005670000-0x000000000576A000-memory.dmp