Analysis
- max time kernel
121s - max time network
121s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
- submitted
03/05/2024, 04:27
General
- Target SecuriteInfo.com.Win32.PWSX-gen.23212.6828.exe
- Size 692KB
- Sample240503-e234wshb69
- SHA256 21e7743ee49b00d201af99fbd9fc0a430032f416070834294b12f3ea2c12b48d
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.starmech.net
-
Port
587
-
Username
-
Password
nics123
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- 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 1 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.23212.6828.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.23212.6828.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.23212.6828.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\KbNISewEyYleQ.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KbNISewEyYleQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3DDB.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.23212.6828.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.23212.6828.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
tmp3DDB.tmp
d93f411851d7c929.customDestinations-ms
memory/2032-30-0x00000000746C0000-0x0000000074DAE000-memory.dmp
memory/2032-1-0x0000000001210000-0x00000000012C0000-memory.dmp
memory/2032-2-0x00000000746C0000-0x0000000074DAE000-memory.dmp
memory/2032-3-0x0000000000560000-0x0000000000576000-memory.dmp
memory/2032-4-0x0000000000640000-0x0000000000656000-memory.dmp
memory/2032-5-0x0000000001190000-0x0000000001214000-memory.dmp
memory/2032-0-0x00000000746CE000-0x00000000746CF000-memory.dmp
memory/2844-19-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2844-20-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2844-28-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2844-27-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2844-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2844-24-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2844-22-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2844-29-0x0000000000400000-0x0000000000442000-memory.dmp