Analysis
- max time kernel
135s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
17/05/2023, 06:59
General
- Target PO#88224.exe
- Size 753KB
- Sample230517-hr3bdsda7v
- SHA256 12dd7993470fb8771929bc1fa70876866bb29f8a4f43d5c79dc8d643501bd3a0
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot5814058627:AAFjPgERfyp3AZJXAfISMezajcw2VR_A_9U/
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 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 1 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\PO#88224.exe"C:\Users\Admin\AppData\Local\Temp\PO#88224.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AozkTkoNGaseTP" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDC5B.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\PO#88224.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
PO#88224.exe.log
tmpDC5B.tmp
memory/452-137-0x0000000005A10000-0x0000000005A1A000-memory.dmp
memory/452-134-0x0000000005A50000-0x0000000005AEC000-memory.dmp
memory/452-133-0x0000000000F90000-0x0000000001052000-memory.dmp
memory/452-138-0x0000000005D30000-0x0000000005D86000-memory.dmp
memory/452-139-0x00000000059F0000-0x0000000005A00000-memory.dmp
memory/452-140-0x00000000059F0000-0x0000000005A00000-memory.dmp
memory/452-135-0x00000000060A0000-0x0000000006644000-memory.dmp
memory/452-136-0x0000000005AF0000-0x0000000005B82000-memory.dmp
memory/2056-144-0x0000000000400000-0x0000000000430000-memory.dmp
memory/2056-147-0x0000000004D90000-0x0000000004DF6000-memory.dmp
memory/2056-148-0x0000000004FA0000-0x0000000004FB0000-memory.dmp
memory/2056-150-0x0000000006930000-0x0000000006980000-memory.dmp
memory/2056-151-0x0000000006C80000-0x0000000006E42000-memory.dmp
memory/2056-158-0x0000000004FA0000-0x0000000004FB0000-memory.dmp