Analysis
- max time kernel
99s - max time network
110s - platform
windows10_x64 - resource
win10v20201028 - submitted
17/12/2020, 07:18
General
- Target 8ee16e0b7c3b1121b4a2bc974de12a13.exe
- Size 2.8MB
- Sample201217-vpma5l4c2n
- SHA256 802d99c08b33d449595e8cc7b81971f912e6adaea2e9ccb88f56cbf03aea9319
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.hkoffice365.com
-
Port
587
-
Username
-
Password
Xr,*=y$V63wm
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.
- 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 NtSetInformationThreadHideFromDebugger 5 IoCs
- 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 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\8ee16e0b7c3b1121b4a2bc974de12a13.exe"C:\Users\Admin\AppData\Local\Temp\8ee16e0b7c3b1121b4a2bc974de12a13.exe"1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\8ee16e0b7c3b1121b4a2bc974de12a13.exe"C:\Users\Admin\AppData\Local\Temp\8ee16e0b7c3b1121b4a2bc974de12a13.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/580-2-0x0000000073F80000-0x000000007466E000-memory.dmp
memory/580-3-0x00000000001D0000-0x00000000001D1000-memory.dmp
memory/580-5-0x000000000AD90000-0x000000000AD91000-memory.dmp
memory/580-6-0x000000000A990000-0x000000000A991000-memory.dmp
memory/580-7-0x0000000004CE0000-0x0000000004CE1000-memory.dmp
memory/580-8-0x0000000002740000-0x0000000002741000-memory.dmp
memory/580-9-0x0000000004C40000-0x0000000004C85000-memory.dmp
memory/3404-10-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3404-12-0x0000000073F80000-0x000000007466E000-memory.dmp
memory/3404-17-0x0000000005830000-0x0000000005831000-memory.dmp
memory/3404-18-0x0000000005B70000-0x0000000005B71000-memory.dmp