Analysis
- max time kernel
149s - max time network
115s - platform
windows11-21h2_x64 - resource
win11-20251015-en - resource tags
- submitted
16/10/2025, 06:16
General
- Target STEINNNNOS.exe
- Size 347KB
- Sample251016-g1symssps6
- SHA256 3249cbb032d6aaf66c01aaddc48eab91417b1f22b97ddb659f2f5a5a5683bfb3
Malware Config
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://ftp.haliza.com.my
-
Port
21
-
Username
-
Password
JesusChrist007$
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Agenttesla family
- Executes dropped EXE 1 IoCs
- 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 3 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
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\STEINNNNOS.exe"C:\Users\Admin\AppData\Local\Temp\STEINNNNOS.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
C:\Users\Admin\AppData\Roaming\sgxIb\sgxIb.exeC:\Users\Admin\AppData\Roaming\sgxIb\sgxIb.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
sgxIb.exe
memory/4360-7-0x00000000058C0000-0x0000000005926000-memory.dmp
memory/4360-3-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4360-5-0x0000000005D70000-0x0000000006316000-memory.dmp
memory/4360-6-0x00000000057B0000-0x00000000057C0000-memory.dmp
memory/4360-9-0x0000000006B50000-0x0000000006BA0000-memory.dmp
memory/4360-14-0x00000000057B0000-0x00000000057C0000-memory.dmp
memory/4360-15-0x0000000005210000-0x00000000052A2000-memory.dmp
memory/4360-16-0x0000000002E50000-0x0000000002E5A000-memory.dmp
memory/5116-12-0x0000000000410000-0x0000000000422000-memory.dmp
memory/5632-2-0x0000000005700000-0x0000000005754000-memory.dmp
memory/5632-0-0x0000000000C00000-0x0000000000C5E000-memory.dmp
memory/5632-1-0x0000000005650000-0x0000000005660000-memory.dmp