Analysis
- max time kernel
143s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
16/03/2023, 09:49
General
- Target tmp.exe
- Size 3.8MB
- Sample230316-lthljsce4s
- SHA256 462b121f72bc42fcefcfc67174e4de53083b977458c7ed3d4009eec6bddd3f1b
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot6186081135:AAE-pyeAPznTgw_kOutx39khc9POE425kWU/
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 2 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). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\tmp.exeC:\Users\Admin\AppData\Local\Temp\tmp.exe2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmp.exe.log
__PSScriptPolicyTest_x4qc55n1.voh.ps1
memory/112-153-0x00000000064D0000-0x00000000064EA000-memory.dmp
memory/112-152-0x0000000007890000-0x0000000007F0A000-memory.dmp
memory/112-137-0x0000000005130000-0x0000000005758000-memory.dmp
memory/112-138-0x0000000005800000-0x0000000005866000-memory.dmp
memory/112-139-0x0000000005920000-0x0000000005986000-memory.dmp
memory/112-140-0x0000000004AF0000-0x0000000004B00000-memory.dmp
memory/112-141-0x0000000004AF0000-0x0000000004B00000-memory.dmp
memory/112-156-0x0000000004AF0000-0x0000000004B00000-memory.dmp
memory/112-151-0x0000000005FE0000-0x0000000005FFE000-memory.dmp
memory/112-158-0x0000000004AF0000-0x0000000004B00000-memory.dmp
memory/112-157-0x0000000004AF0000-0x0000000004B00000-memory.dmp
memory/112-154-0x0000000004AF0000-0x0000000004B00000-memory.dmp
memory/112-136-0x0000000004A30000-0x0000000004A66000-memory.dmp
memory/648-133-0x0000000000BC0000-0x0000000000F88000-memory.dmp
memory/648-155-0x00000000058A0000-0x00000000058B0000-memory.dmp
memory/648-134-0x00000000058A0000-0x00000000058B0000-memory.dmp
memory/648-135-0x0000000005CD0000-0x0000000005CF2000-memory.dmp
memory/3952-170-0x0000000005670000-0x0000000005680000-memory.dmp
memory/3952-166-0x0000000005CB0000-0x0000000006254000-memory.dmp
memory/3952-167-0x0000000005670000-0x0000000005680000-memory.dmp
memory/3952-169-0x0000000006E50000-0x0000000006EE2000-memory.dmp
memory/3952-163-0x0000000000400000-0x0000000000430000-memory.dmp
memory/3952-171-0x0000000006EF0000-0x0000000006EFA000-memory.dmp
memory/3952-172-0x00000000070A0000-0x00000000070F0000-memory.dmp
memory/3952-173-0x0000000007330000-0x00000000074F2000-memory.dmp