Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
22/05/2024, 00:02
General
- Target OTP BULDER @ZerodayExploitware.exe
- Size 175KB
- Sample240522-abyn9sed5t
- SHA256 e1df166da9ba07ad1a5b1a105eac585f04ea67a023cca16f54bdbfa97bb39dd2
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/bot6381067446:AAEZEWH8wbF7Q1Kou81_S0sE6VwJZGJKneM/sendMessage?chat_id=5901231421
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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
- 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 23 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\OTP BULDER @ZerodayExploitware.exe"C:\Users\Admin\AppData\Local\Temp\OTP BULDER @ZerodayExploitware.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/1428-148-0x0000000074760000-0x0000000074F10000-memory.dmp
memory/1428-3-0x00000000050E0000-0x0000000005146000-memory.dmp
memory/1428-2-0x0000000074760000-0x0000000074F10000-memory.dmp
memory/1428-0-0x000000007476E000-0x000000007476F000-memory.dmp
memory/1428-149-0x0000000005C50000-0x0000000005CE2000-memory.dmp
memory/1428-150-0x00000000062A0000-0x0000000006844000-memory.dmp
memory/1428-154-0x0000000005E90000-0x0000000005E9A000-memory.dmp
memory/1428-1-0x0000000000700000-0x0000000000732000-memory.dmp
memory/1428-160-0x0000000006B30000-0x0000000006B42000-memory.dmp
memory/1428-185-0x000000007476E000-0x000000007476F000-memory.dmp
memory/1428-186-0x0000000074760000-0x0000000074F10000-memory.dmp
memory/1428-187-0x0000000074760000-0x0000000074F10000-memory.dmp