Analysis
- max time kernel
119s - max time network
119s - platform
windows10_x64 - resource
win10v20201028 - submitted
29/01/2021, 16:34
General
- Target IMG_058741601.exe
- Size 732KB
- Sample210129-8tkfsg2bca
- SHA256 9bb2525c48049ffd05b8ad6a39a89245b6a4de4914275fcfad2beee8bfaa714d
Malware Config
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger Payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 2 IoCs
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 26 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\IMG_058741601.exe"C:\Users\Admin\AppData\Local\Temp\IMG_058741601.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "etsb" /t REG_SZ /d "C:\Users\Admin\mnoi.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "etsb" /t REG_SZ /d "C:\Users\Admin\mnoi.exe"3⤵
- Adds Run key to start application
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C:\Users\Admin\mnoi.exe"C:\Users\Admin\mnoi.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1696-38-0x0000000005730000-0x0000000005731000-memory.dmp
memory/1696-33-0x0000000073A20000-0x000000007410E000-memory.dmp
memory/1696-36-0x0000000005AF0000-0x0000000005AF1000-memory.dmp
memory/1696-39-0x00000000065C0000-0x00000000065C1000-memory.dmp
memory/1696-41-0x0000000006850000-0x0000000006851000-memory.dmp
memory/1696-29-0x0000000000400000-0x0000000000468000-memory.dmp
memory/3888-10-0x0000000004F30000-0x0000000004F31000-memory.dmp
memory/3888-8-0x0000000004CD0000-0x0000000004CD1000-memory.dmp
memory/3888-3-0x0000000000390000-0x0000000000391000-memory.dmp
memory/3888-5-0x0000000004CF0000-0x0000000004CF1000-memory.dmp
memory/3888-7-0x00000000027D0000-0x00000000027EE000-memory.dmp
memory/3888-9-0x0000000008150000-0x0000000008151000-memory.dmp
memory/3888-2-0x0000000073A20000-0x000000007410E000-memory.dmp
memory/3888-13-0x0000000004F31000-0x0000000004F32000-memory.dmp
memory/4092-17-0x0000000073A20000-0x000000007410E000-memory.dmp
memory/4092-21-0x0000000005170000-0x0000000005171000-memory.dmp
memory/4092-28-0x000000000C370000-0x000000000C371000-memory.dmp
memory/4092-27-0x0000000008980000-0x000000000898B000-memory.dmp
memory/4092-26-0x0000000005171000-0x0000000005172000-memory.dmp