Analysis
- max time kernel
139s - max time network
121s - platform
windows7_x64 - resource
win7-en-20211014 - submitted
15/11/2021, 08:37
General
- Target szsdee.vbs
- Size 855KB
- Sample211115-kh6cssefbj
- SHA256 d194b99224979a3bfd29bb09bd91d52f7e231ac652545180c6dc69b4edd8d779
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot2107727636:AAGtenJYFQWUHBz27lev7d_3slnNyCuUhxc/sendDocument
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 5 IoCs
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 1 IoCs
- 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
- 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 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\szsdee.vbs"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\anyname.exe"C:\Users\Admin\AppData\Local\Temp\anyname.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\anyname.exe"{path}"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1032-70-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1032-77-0x0000000004B11000-0x0000000004B12000-memory.dmp
memory/1032-76-0x0000000004B10000-0x0000000004B11000-memory.dmp
memory/1032-74-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1032-71-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1032-69-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1032-67-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1032-68-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1484-59-0x0000000000290000-0x0000000000291000-memory.dmp
memory/1484-65-0x0000000001EA0000-0x0000000001ED8000-memory.dmp
memory/1484-61-0x00000000763C1000-0x00000000763C3000-memory.dmp
memory/1484-64-0x0000000005270000-0x00000000052F0000-memory.dmp
memory/1484-63-0x0000000000340000-0x000000000034E000-memory.dmp
memory/1484-62-0x0000000004E20000-0x0000000004E21000-memory.dmp
memory/1524-55-0x000007FEFBB41000-0x000007FEFBB43000-memory.dmp