Analysis
- max time kernel
134s - max time network
135s - platform
windows10_x64 - resource
win10v20201028 - submitted
04/11/2020, 14:06
General
- Target f5904a66a7961025941fa1c08e6f9b44.exe
- Size 706KB
- Sample201104-s89gp63p7e
- SHA256 fb5c8438c12b2a2fafeaedd0d328c2669d6c8ef6fed06455e630d1edf4d47651
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.hkoffice365.com
-
Port
587
-
Username
-
Password
?K76%fuh6kJ*
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 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.
- 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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\f5904a66a7961025941fa1c08e6f9b44.exe"C:\Users\Admin\AppData\Local\Temp\f5904a66a7961025941fa1c08e6f9b44.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\f5904a66a7961025941fa1c08e6f9b44.exe"C:\Users\Admin\AppData\Local\Temp\f5904a66a7961025941fa1c08e6f9b44.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/648-0-0x00000000730E0000-0x00000000737CE000-memory.dmp
memory/648-1-0x0000000000790000-0x0000000000791000-memory.dmp
memory/648-3-0x0000000005740000-0x0000000005741000-memory.dmp
memory/648-4-0x00000000051A0000-0x00000000051A1000-memory.dmp
memory/648-5-0x0000000005440000-0x000000000548A000-memory.dmp
memory/648-6-0x00000000054E0000-0x00000000054E1000-memory.dmp
memory/648-7-0x0000000005550000-0x0000000005566000-memory.dmp
memory/3568-8-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3568-11-0x00000000730E0000-0x00000000737CE000-memory.dmp
memory/3568-15-0x00000000058F0000-0x00000000058F1000-memory.dmp
memory/3568-16-0x0000000005BF0000-0x0000000005BF1000-memory.dmp
memory/3568-17-0x0000000006480000-0x0000000006481000-memory.dmp
memory/3568-18-0x0000000006B80000-0x0000000006B81000-memory.dmp
memory/3568-19-0x0000000001850000-0x0000000001851000-memory.dmp