Analysis
- max time kernel
135s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
06/06/2023, 16:41
General
- Target PRE ALERT DOCUMENTS.exe
- Size 690KB
- Sample230606-t64csaef52
- SHA256 470c3ac6350508f77bd2b62e7a41af2dfc518b184f4bc22367f84c3a56987ed6
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot5515611206:AAEcQSX8hXHOAxSYr8KUdLxGF5eqw4FRXoA/
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
- 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 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\PRE ALERT DOCUMENTS.exe"C:\Users\Admin\AppData\Local\Temp\PRE ALERT DOCUMENTS.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TCYTzwteX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6745.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\PRE ALERT DOCUMENTS.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
PRE ALERT DOCUMENTS.exe.log
tmp6745.tmp
memory/2032-136-0x0000000005B60000-0x0000000005BFC000-memory.dmp
memory/2032-133-0x0000000000FB0000-0x0000000001062000-memory.dmp
memory/2032-137-0x0000000005D80000-0x0000000005D90000-memory.dmp
memory/2032-138-0x00000000059F0000-0x00000000059FA000-memory.dmp
memory/2032-139-0x0000000005D80000-0x0000000005D90000-memory.dmp
memory/2032-135-0x0000000005A20000-0x0000000005AB2000-memory.dmp
memory/2032-134-0x0000000005FD0000-0x0000000006574000-memory.dmp
memory/4360-143-0x0000000000400000-0x0000000000430000-memory.dmp
memory/4360-146-0x0000000004F10000-0x0000000004F76000-memory.dmp
memory/4360-147-0x0000000005000000-0x0000000005010000-memory.dmp
memory/4360-148-0x0000000005CC0000-0x0000000005D10000-memory.dmp
memory/4360-149-0x0000000005EE0000-0x00000000060A2000-memory.dmp
memory/4360-150-0x0000000005000000-0x0000000005010000-memory.dmp