Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
09/05/2024, 11:26
General
- Target SecuriteInfo.com.Win32.CrypterX-gen.19037.19274.exe
- Size 689KB
- Sample240509-njt8psfa3t
- SHA256 65b79e68d650ab1f2d6fc5d048b27bc44d54e5cb8f310932b3e18d034ecd234a
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.kingcocojava.com
-
Port
587
-
Username
-
Password
mktsub
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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 3 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 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.CrypterX-gen.19037.19274.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.CrypterX-gen.19037.19274.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wLlnydV.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wLlnydV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp61D7.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.CrypterX-gen.19037.19274.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.CrypterX-gen.19037.19274.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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
__PSScriptPolicyTest_1fi0ygx4.gqa.ps1
tmp61D7.tmp
memory/2856-27-0x0000000074F60000-0x0000000075710000-memory.dmp
memory/2856-9-0x0000000005D00000-0x0000000005D16000-memory.dmp
memory/2856-4-0x0000000005760000-0x000000000576A000-memory.dmp
memory/2856-6-0x0000000074F60000-0x0000000075710000-memory.dmp
memory/2856-5-0x0000000005940000-0x00000000059DC000-memory.dmp
memory/2856-7-0x0000000005CA0000-0x0000000005CBE000-memory.dmp
memory/2856-8-0x0000000005CD0000-0x0000000005CE0000-memory.dmp
memory/2856-3-0x00000000056B0000-0x0000000005742000-memory.dmp
memory/2856-10-0x0000000008250000-0x00000000082D4000-memory.dmp
memory/2856-1-0x0000000000C40000-0x0000000000CF2000-memory.dmp
memory/2856-2-0x0000000005D30000-0x00000000062D4000-memory.dmp
memory/2856-0-0x0000000074F6E000-0x0000000074F6F000-memory.dmp
memory/3692-65-0x0000000006F90000-0x0000000006FE0000-memory.dmp
memory/3692-20-0x0000000000400000-0x0000000000442000-memory.dmp
memory/3692-66-0x0000000074F60000-0x0000000075710000-memory.dmp
memory/3692-25-0x0000000074F60000-0x0000000075710000-memory.dmp
memory/5616-18-0x0000000074F60000-0x0000000075710000-memory.dmp
memory/5616-51-0x0000000007A30000-0x0000000007AD3000-memory.dmp
memory/5616-23-0x0000000006020000-0x0000000006086000-memory.dmp
memory/5616-19-0x0000000074F60000-0x0000000075710000-memory.dmp
memory/5616-50-0x00000000079B0000-0x00000000079CE000-memory.dmp
memory/5616-22-0x0000000005820000-0x0000000005842000-memory.dmp
memory/5616-37-0x0000000006850000-0x000000000686E000-memory.dmp
memory/5616-38-0x00000000068E0000-0x000000000692C000-memory.dmp
memory/5616-39-0x00000000079F0000-0x0000000007A22000-memory.dmp
memory/5616-26-0x00000000061B0000-0x0000000006504000-memory.dmp
memory/5616-40-0x0000000071310000-0x000000007135C000-memory.dmp
memory/5616-24-0x0000000006100000-0x0000000006166000-memory.dmp
memory/5616-52-0x00000000081B0000-0x000000000882A000-memory.dmp
memory/5616-53-0x0000000007B70000-0x0000000007B8A000-memory.dmp
memory/5616-54-0x0000000007BE0000-0x0000000007BEA000-memory.dmp
memory/5616-55-0x0000000007DF0000-0x0000000007E86000-memory.dmp
memory/5616-56-0x0000000007D70000-0x0000000007D81000-memory.dmp
memory/5616-58-0x0000000007DA0000-0x0000000007DAE000-memory.dmp
memory/5616-59-0x0000000007DB0000-0x0000000007DC4000-memory.dmp
memory/5616-60-0x0000000007EB0000-0x0000000007ECA000-memory.dmp
memory/5616-61-0x0000000007E90000-0x0000000007E98000-memory.dmp
memory/5616-64-0x0000000074F60000-0x0000000075710000-memory.dmp
memory/5616-17-0x00000000058F0000-0x0000000005F18000-memory.dmp
memory/5616-15-0x0000000005200000-0x0000000005236000-memory.dmp