Analysis
- max time kernel
131s - max time network
133s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
14/02/2023, 13:37
General
- Target Tumpcenccik.exe
- Size 705KB
- Sample230214-qwt5ksda81
- SHA256 9fc6f01a0e05e3ffa8d1391586e36f2a587f38ad3a186dc68ac8a6101fd94b6d
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
susgutnfxunikhqv
-
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.
- 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). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Tumpcenccik.exe"C:\Users\Admin\AppData\Local\Temp\Tumpcenccik.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- 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\Tumpcenccik.exeC:\Users\Admin\AppData\Local\Temp\Tumpcenccik.exe2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\Tumpcenccik.exeC:\Users\Admin\AppData\Local\Temp\Tumpcenccik.exe2⤵
- Accesses Microsoft Outlook profiles
- 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
Tumpcenccik.exe.log
memory/204-144-0x0000000006120000-0x000000000613A000-memory.dmp
memory/204-143-0x0000000007280000-0x00000000078FA000-memory.dmp
memory/204-142-0x0000000005C30000-0x0000000005C4E000-memory.dmp
memory/204-141-0x0000000005400000-0x0000000005466000-memory.dmp
memory/204-138-0x0000000002650000-0x0000000002686000-memory.dmp
memory/204-139-0x0000000004DD0000-0x00000000053F8000-memory.dmp
memory/204-140-0x0000000004D00000-0x0000000004D66000-memory.dmp
memory/2564-134-0x00000000057C0000-0x0000000005852000-memory.dmp
memory/2564-136-0x0000000007D20000-0x0000000007D42000-memory.dmp
memory/2564-135-0x0000000005C30000-0x0000000005C3A000-memory.dmp
memory/2564-132-0x0000000000D30000-0x0000000000DE6000-memory.dmp
memory/2564-133-0x0000000005CD0000-0x0000000006274000-memory.dmp
memory/4296-147-0x0000000000400000-0x0000000000430000-memory.dmp
memory/4296-149-0x0000000006F40000-0x0000000006F90000-memory.dmp
memory/4296-150-0x00000000071F0000-0x00000000073B2000-memory.dmp