Analysis
- max time kernel
65s - max time network
69s - platform
windows7_x64 - resource
win7-20220901-en - resource tags
- submitted
22/11/2022, 09:32
General
- Target Halkbank.exe
- Size 943KB
- Sample221122-lhmfcscb9w
- SHA256 b7485129bfd03a3a6be7fd8b30eb70b0f89631bb81ebbfdf6d7ad78fc17fc38e
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot5792996127:AAEo0wCCYZp60yQsf_X1P7t-T5AAK5KPYXY/
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- 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
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Halkbank.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Halkbank.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank.exe"2⤵
- 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
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Downloads
memory/700-64-0x0000000000400000-0x000000000043C000-memory.dmp
memory/700-65-0x0000000000400000-0x000000000043C000-memory.dmp
memory/700-70-0x0000000000400000-0x000000000043C000-memory.dmp
memory/700-61-0x0000000000400000-0x000000000043C000-memory.dmp
memory/700-60-0x0000000000400000-0x000000000043C000-memory.dmp
memory/700-63-0x0000000000400000-0x000000000043C000-memory.dmp
memory/700-68-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1396-55-0x00000000760E1000-0x00000000760E3000-memory.dmp
memory/1396-54-0x0000000000B50000-0x0000000000C42000-memory.dmp
memory/1396-59-0x00000000052C0000-0x0000000005330000-memory.dmp
memory/1396-58-0x0000000005810000-0x00000000058B8000-memory.dmp
memory/1396-57-0x0000000000260000-0x000000000026C000-memory.dmp
memory/1396-56-0x0000000000380000-0x0000000000398000-memory.dmp