Analysis
- max time kernel
93s - max time network
116s - platform
windows10_x64 - resource
win10v20201028 - submitted
23/12/2020, 07:36
General
- Target c7c46db118df6a8d6c9deb69fa6b765b.exe
- Size 2.1MB
- Sample201223-46vvjjs7l6
- SHA256 139e0682e4985353d6d73c2c0c8a0982a06a6f8758edb5b7f949282b5cbbd63a
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.sardaplywood.com
-
Port
587
-
Username
-
Password
sup123st45
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- AgentTesla Payload 2 IoCs
- Drops startup file 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 2 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\c7c46db118df6a8d6c9deb69fa6b765b.exe"C:\Users\Admin\AppData\Local\Temp\c7c46db118df6a8d6c9deb69fa6b765b.exe"1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\c7c46db118df6a8d6c9deb69fa6b765b.exe"C:\Users\Admin\AppData\Local\Temp\c7c46db118df6a8d6c9deb69fa6b765b.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\c7c46db118df6a8d6c9deb69fa6b765b.exe"C:\Users\Admin\AppData\Local\Temp\c7c46db118df6a8d6c9deb69fa6b765b.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/580-2-0x0000000073E00000-0x00000000744EE000-memory.dmp
memory/580-3-0x0000000000F80000-0x0000000000F81000-memory.dmp
memory/580-5-0x0000000005A70000-0x0000000005A71000-memory.dmp
memory/580-6-0x0000000003470000-0x00000000034BF000-memory.dmp
memory/580-7-0x0000000007350000-0x0000000007351000-memory.dmp
memory/2072-8-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2072-11-0x0000000073E00000-0x00000000744EE000-memory.dmp
memory/2072-16-0x0000000005D10000-0x0000000005D11000-memory.dmp
memory/2072-17-0x00000000064A0000-0x00000000064A1000-memory.dmp
memory/2072-18-0x00000000068A0000-0x00000000068A1000-memory.dmp
memory/2072-19-0x0000000006950000-0x0000000006951000-memory.dmp