Analysis
- max time kernel
141s - max time network
141s - platform
windows10_x64 - resource
win10v20201028 - submitted
26/01/2021, 15:48
General
- Target 9b465f73f661bc341cf2f0c2109c727b.exe
- Size 1.2MB
- Sample210126-9b71ldnjp2
- SHA256 e0fdf86fc02f69f4c0f9717f216bfc704a07926df45ac979e7aaf4bfa44f69f2
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
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C:\Users\Admin\AppData\Local\Temp\9b465f73f661bc341cf2f0c2109c727b.exe"C:\Users\Admin\AppData\Local\Temp\9b465f73f661bc341cf2f0c2109c727b.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 "bnye" /t REG_SZ /d "C:\Users\Admin\ron.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "bnye" /t REG_SZ /d "C:\Users\Admin\ron.exe"3⤵
- Adds Run key to start application
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C:\Users\Admin\ron.exe"C:\Users\Admin\ron.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/1320-28-0x0000000008A60000-0x0000000008A61000-memory.dmp
memory/1320-27-0x0000000008A50000-0x0000000008A5B000-memory.dmp
memory/1320-26-0x0000000004F91000-0x0000000004F92000-memory.dmp
memory/1320-25-0x0000000004F90000-0x0000000004F91000-memory.dmp
memory/1320-17-0x0000000073820000-0x0000000073F0E000-memory.dmp
memory/2000-29-0x0000000000400000-0x0000000000468000-memory.dmp
memory/2000-41-0x0000000006740000-0x0000000006741000-memory.dmp
memory/2000-39-0x0000000006790000-0x0000000006791000-memory.dmp
memory/2000-38-0x00000000057C0000-0x00000000057C1000-memory.dmp
memory/2000-36-0x0000000005C80000-0x0000000005C81000-memory.dmp
memory/2000-33-0x0000000073820000-0x0000000073F0E000-memory.dmp
memory/4048-9-0x00000000083E0000-0x00000000083E1000-memory.dmp
memory/4048-5-0x0000000005390000-0x0000000005391000-memory.dmp
memory/4048-3-0x0000000000A10000-0x0000000000A11000-memory.dmp
memory/4048-2-0x0000000073820000-0x0000000073F0E000-memory.dmp
memory/4048-6-0x0000000005560000-0x0000000005561000-memory.dmp
memory/4048-8-0x0000000005370000-0x000000000538E000-memory.dmp
memory/4048-13-0x0000000005561000-0x0000000005562000-memory.dmp
memory/4048-10-0x0000000008910000-0x0000000008911000-memory.dmp