Analysis
- max time kernel
146s - max time network
151s - platform
windows10_x64 - resource
win10 - submitted
17/08/2020, 19:05
General
- Target Inquiry.exe
- Size 577KB
- Sample200817-e7gt11ef1s
- SHA256 fc8190f268303e801544fcbeee6d21ac32a72779103cec2e31a9f5963d5a0c55
Malware Config
Extracted
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agenttesla
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Protocol
smtp
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Host
mail.plusholding.com.tr
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Port
587
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Username
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Password
egeyurt2017
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 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\Inquiry.exe"C:\Users\Admin\AppData\Local\Temp\Inquiry.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 winservie /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\winservie.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 winservie /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\winservie.exe"3⤵
- Adds Run key to start application
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-
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C:\Users\Admin\AppData\Roaming\winservie.exe"C:\Users\Admin\AppData\Roaming\winservie.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/716-6-0x0000000005960000-0x0000000005961000-memory.dmp
memory/716-1-0x0000000000630000-0x0000000000631000-memory.dmp
memory/716-0-0x0000000073D30000-0x000000007441E000-memory.dmp
memory/716-5-0x0000000005D80000-0x0000000005D81000-memory.dmp
memory/716-3-0x00000000029B0000-0x00000000029D1000-memory.dmp
memory/1176-31-0x0000000005B00000-0x0000000005B01000-memory.dmp
memory/1176-30-0x0000000004F60000-0x0000000004F61000-memory.dmp
memory/1176-29-0x0000000004F90000-0x0000000004F91000-memory.dmp
memory/1176-25-0x0000000073D30000-0x000000007441E000-memory.dmp
memory/1176-21-0x0000000000400000-0x000000000045A000-memory.dmp
memory/3824-12-0x0000000073D30000-0x000000007441E000-memory.dmp
memory/3824-20-0x0000000005500000-0x0000000005503000-memory.dmp