Analysis
- max time kernel
136s - max time network
137s - platform
windows7_x64 - resource
win7v20201028 - submitted
03/11/2020, 14:37
General
- Target nameserverx.exe
- Size 671KB
- Sample201103-hx7be29ex2
- SHA256 a7df178348dd3563a0a0a44ec82af4b6bc15bf352337ef690fac078cfee6ec49
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.cavilum.cl
-
Port
587
-
Username
-
Password
Cavilum4313
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 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 SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\nameserverx.exe"C:\Users\Admin\AppData\Local\Temp\nameserverx.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\nameserverx.exe"C:\Users\Admin\AppData\Local\Temp\nameserverx.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/596-0-0x0000000074CC0000-0x00000000753AE000-memory.dmp
memory/596-1-0x0000000000100000-0x0000000000101000-memory.dmp
memory/596-3-0x0000000000510000-0x0000000000560000-memory.dmp
memory/596-4-0x00000000005A0000-0x00000000005B6000-memory.dmp
memory/1588-5-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1588-7-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1588-8-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1588-9-0x0000000074CC0000-0x00000000753AE000-memory.dmp