Analysis
- max time kernel
150s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
26/07/2023, 01:01
General
- Target 5899c6cc2b11f9a7ea953496e5808cd87f8bf85bbed2cb419e50524e9c76cf30.exe
- Size 175KB
- Sample230726-bc9zcsgf39
- SHA256 5899c6cc2b11f9a7ea953496e5808cd87f8bf85bbed2cb419e50524e9c76cf30
Malware Config
Extracted
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asyncrat
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Default
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127.0.0.1:6606
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127.0.0.1:7707
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127.0.0.1:8808
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https://api.telegram.org/bot6505315332:AAE223agsSlTsgqmv1AU3cbQlHn8mQagTZw/sendMessage?chat_id=6217984158
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AsyncMutex_6SI8OkPnk
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delay
3
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install
false
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install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- StormKitty
StormKitty is an open source info stealer written in C#.
- StormKitty payload 1 IoCs
- Async RAT payload 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Drops desktop.ini file(s) 8 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 27 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\5899c6cc2b11f9a7ea953496e5808cd87f8bf85bbed2cb419e50524e9c76cf30.exe"C:\Users\Admin\AppData\Local\Temp\5899c6cc2b11f9a7ea953496e5808cd87f8bf85bbed2cb419e50524e9c76cf30.exe"1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\chcp.comchcp 650013⤵
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C:\Windows\SysWOW64\netsh.exenetsh wlan show profile3⤵
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C:\Windows\SysWOW64\findstr.exefindstr All3⤵
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\chcp.comchcp 650013⤵
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C:\Windows\SysWOW64\netsh.exenetsh wlan show networks mode=bssid3⤵
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
msgid.dat
Bookmarks.txt
Process.txt
memory/4468-211-0x0000000005550000-0x0000000005560000-memory.dmp
memory/4468-136-0x00000000056F0000-0x0000000005756000-memory.dmp
memory/4468-205-0x0000000074BD0000-0x0000000075380000-memory.dmp
memory/4468-133-0x0000000000C00000-0x0000000000C32000-memory.dmp
memory/4468-135-0x0000000005550000-0x0000000005560000-memory.dmp
memory/4468-286-0x0000000005550000-0x0000000005560000-memory.dmp
memory/4468-287-0x0000000006590000-0x0000000006622000-memory.dmp
memory/4468-288-0x0000000006BE0000-0x0000000007184000-memory.dmp
memory/4468-292-0x0000000006680000-0x000000000668A000-memory.dmp
memory/4468-134-0x0000000074BD0000-0x0000000075380000-memory.dmp
memory/4468-298-0x0000000007530000-0x0000000007542000-memory.dmp
memory/4468-322-0x0000000005550000-0x0000000005560000-memory.dmp