Analysis
- max time kernel
39s - max time network
49s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
11/06/2024, 01:07
General
- Target 2a34fdbd85ede8fa71f6c5133c3b38ce86334a0ec30cec9081b7b5d33cb6edf3.exe
- Size 2.3MB
- Sample240611-bgl34aydnj
- SHA256 2a34fdbd85ede8fa71f6c5133c3b38ce86334a0ec30cec9081b7b5d33cb6edf3
Malware Config
Extracted
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agenttesla
-
Protocol
smtp
-
Host
mail.oserfech.eu
-
Port
587
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Username
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Password
Epicoffice@2024
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- UAC bypass 3 TTPs 1 IoCs
- Windows security bypass 2 TTPs 2 IoCs
- Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
- Detects executables packed with or use KoiVM 1 IoCs
- Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
- Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
- Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
- Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs
- 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.
- Windows security modification 2 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks whether UAC is enabled 1 TTPs 2 IoCs
- Looks up external IP address via web service 1 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).
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
- System policy modification 1 TTPs 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2a34fdbd85ede8fa71f6c5133c3b38ce86334a0ec30cec9081b7b5d33cb6edf3.exe"C:\Users\Admin\AppData\Local\Temp\2a34fdbd85ede8fa71f6c5133c3b38ce86334a0ec30cec9081b7b5d33cb6edf3.exe"1⤵
- UAC bypass
- Windows security bypass
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\2a34fdbd85ede8fa71f6c5133c3b38ce86334a0ec30cec9081b7b5d33cb6edf3.exe" -Force2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"2⤵
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
__PSScriptPolicyTest_qf3i0ju1.jhn.ps1
memory/4364-22-0x00007FFDAE390000-0x00007FFDAEE51000-memory.dmp
memory/4364-5-0x00007FFDAE390000-0x00007FFDAEE51000-memory.dmp
memory/4364-18-0x0000022897780000-0x00000228977A2000-memory.dmp
memory/4364-7-0x00000228AFDC0000-0x00000228AFDD0000-memory.dmp
memory/4940-3-0x000001B035CA0000-0x000001B035D36000-memory.dmp
memory/4940-23-0x00007FFDAE390000-0x00007FFDAEE51000-memory.dmp
memory/4940-1-0x000001B01B230000-0x000001B01B484000-memory.dmp
memory/4940-0-0x00007FFDAE393000-0x00007FFDAE395000-memory.dmp
memory/4940-2-0x00007FFDAE390000-0x00007FFDAEE51000-memory.dmp
memory/5052-19-0x0000000005830000-0x0000000005896000-memory.dmp
memory/5052-6-0x0000000074BAE000-0x0000000074BAF000-memory.dmp
memory/5052-8-0x0000000005DE0000-0x0000000006384000-memory.dmp
memory/5052-4-0x0000000000400000-0x0000000000444000-memory.dmp
memory/5052-25-0x0000000006DE0000-0x0000000006E30000-memory.dmp
memory/5052-26-0x0000000006ED0000-0x0000000006F6C000-memory.dmp
memory/5052-27-0x0000000074BAE000-0x0000000074BAF000-memory.dmp
memory/5052-28-0x0000000007010000-0x00000000070A2000-memory.dmp
memory/5052-29-0x0000000006EC0000-0x0000000006ECA000-memory.dmp