Analysis
- max time kernel
120s - max time network
125s - platform
windows7_x64 - resource
win7-20240220-en - resource tags
- submitted
21/05/2024, 01:35
General
- Target f872e441743cc9c85aa611b5060dd2d5b392adf20eae28ff57716a4a64dc96b5.exe
- Size 1.0MB
- Sample240521-bz4qvsed21
- SHA256 f872e441743cc9c85aa611b5060dd2d5b392adf20eae28ff57716a4a64dc96b5
Malware Config
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://ftp.skitz.com.ng
-
Port
21
-
Username
-
Password
Kosyano1@
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.
- Uses the VBS compiler for execution 1 TTPs
- 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 10 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\f872e441743cc9c85aa611b5060dd2d5b392adf20eae28ff57716a4a64dc96b5.exe"C:\Users\Admin\AppData\Local\Temp\f872e441743cc9c85aa611b5060dd2d5b392adf20eae28ff57716a4a64dc96b5.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- 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\Local\Temp\f872e441743cc9c85aa611b5060dd2d5b392adf20eae28ff57716a4a64dc96b5.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\kcSwhKQEcnmk.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\kcSwhKQEcnmk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6190.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.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
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scripting
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
tmp6190.tmp
d93f411851d7c929.customDestinations-ms
memory/2444-28-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2444-31-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2444-21-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2444-23-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2444-25-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2444-27-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
memory/2444-29-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2444-19-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2872-6-0x0000000004510000-0x0000000004594000-memory.dmp
memory/2872-1-0x0000000000FC0000-0x00000000010C4000-memory.dmp
memory/2872-0-0x000000007461E000-0x000000007461F000-memory.dmp
memory/2872-2-0x0000000074610000-0x0000000074CFE000-memory.dmp
memory/2872-3-0x00000000002E0000-0x0000000000302000-memory.dmp
memory/2872-5-0x0000000000410000-0x0000000000420000-memory.dmp
memory/2872-4-0x0000000000400000-0x000000000040C000-memory.dmp
memory/2872-32-0x0000000074610000-0x0000000074CFE000-memory.dmp