Analysis
- max time kernel
146s - max time network
83s - platform
windows10_x64 - resource
win10v200722 - submitted
18/08/2020, 10:59
General
- Target 1c35b8422e6ad13accb39e4e6a0b00fc.exe
- Size 895KB
- Sample200818-shve5nkx4e
- SHA256 8d4a01b04439bd4ea04fca05aa078367da91aefea6dbe7b317c3fa16ca9d3354
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 IoCs
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 2 IoCs
- Obfuscated with Agile.Net obfuscator 1 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
- 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
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 19 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\1c35b8422e6ad13accb39e4e6a0b00fc.exe"C:\Users\Admin\AppData\Local\Temp\1c35b8422e6ad13accb39e4e6a0b00fc.exe"1⤵
- Loads dropped DLL
- 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 HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v nomnx /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\mhje.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exeREG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v nomnx /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\mhje.exe"3⤵
- Adds Run key to start application
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C:\Users\Admin\mhje.exe"C:\Users\Admin\mhje.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- 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
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2968-6-0x0000000006000000-0x0000000006001000-memory.dmp
memory/2968-3-0x0000000002FB0000-0x0000000002FD1000-memory.dmp
memory/2968-1-0x0000000000C70000-0x0000000000C71000-memory.dmp
memory/2968-0-0x0000000073A90000-0x000000007417E000-memory.dmp
memory/2968-5-0x0000000006420000-0x0000000006421000-memory.dmp
memory/3692-21-0x0000000000400000-0x000000000045A000-memory.dmp
memory/3692-25-0x0000000073A90000-0x000000007417E000-memory.dmp
memory/3692-29-0x00000000054C0000-0x00000000054C1000-memory.dmp
memory/3692-30-0x00000000053F0000-0x00000000053F1000-memory.dmp
memory/3692-31-0x0000000006010000-0x0000000006011000-memory.dmp
memory/3768-20-0x0000000006060000-0x0000000006063000-memory.dmp
memory/3768-12-0x0000000073A90000-0x000000007417E000-memory.dmp