Analysis
- max time kernel
140s - max time network
158s - platform
windows10-2004_x64 - resource
win10v2004-20231020-en - resource tags
- submitted
23/10/2023, 13:22
General
- Target M231747-1793247750-PO-K04.exe
- Size 1.2MB
- Sample231023-ql79fsgh4x
- SHA256 d228edad00c7342f36732017beec3c7ea9057b6ff8c527198ab29d9eefcee645
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.unitechautomations.com
-
Port
587
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Username
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Password
Unitech@123
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Email to
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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- 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
- 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 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\M231747-1793247750-PO-K04.exe"C:\Users\Admin\AppData\Local\Temp\M231747-1793247750-PO-K04.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\Tzmfavn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp53C8.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
tmp53C8.tmp
memory/1420-23-0x00000000745C0000-0x0000000074D70000-memory.dmp
memory/1420-22-0x0000000006210000-0x0000000006260000-memory.dmp
memory/1420-20-0x0000000004F40000-0x0000000004FA6000-memory.dmp
memory/1420-19-0x0000000004D30000-0x0000000004D40000-memory.dmp
memory/1420-18-0x00000000745C0000-0x0000000074D70000-memory.dmp
memory/1420-15-0x0000000000400000-0x0000000000476000-memory.dmp
memory/2796-10-0x0000000005A70000-0x0000000005B1C000-memory.dmp
memory/2796-8-0x00000000745C0000-0x0000000074D70000-memory.dmp
memory/2796-9-0x00000000051E0000-0x00000000051F0000-memory.dmp
memory/2796-0-0x0000000000370000-0x00000000004A4000-memory.dmp
memory/2796-11-0x00000000064F0000-0x0000000006570000-memory.dmp
memory/2796-7-0x00000000051A0000-0x00000000051AC000-memory.dmp
memory/2796-6-0x0000000004EA0000-0x0000000004EAA000-memory.dmp
memory/2796-5-0x00000000051E0000-0x00000000051F0000-memory.dmp
memory/2796-17-0x00000000745C0000-0x0000000074D70000-memory.dmp
memory/2796-4-0x0000000004F50000-0x0000000004FEC000-memory.dmp
memory/2796-3-0x0000000004EB0000-0x0000000004F42000-memory.dmp
memory/2796-2-0x00000000053C0000-0x0000000005964000-memory.dmp
memory/2796-1-0x00000000745C0000-0x0000000074D70000-memory.dmp