Analysis
- max time kernel
138s - max time network
141s - platform
windows10_x64 - resource
win10v200430 - submitted
24/06/2020, 15:08
General
- Target vbc.exe
- Size 445KB
- Sample200624-qs29ef7rya
- SHA256 d2d146dcd0c8eda1d8b60e10034e56e149d4544121af77eda5288eba11ca6dd7
Score
10/10
Malware Config
Extracted
Credentials
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
a173509info
Signatures
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Uses the VBS compiler for execution 1 TTPs
- Adds Run entry to start application 2 TTPs 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Suspicious use of WriteProcessMemory 8 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
Processes
-
C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\vbc.exe"{path}"2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Adds Run entry to start application
- Suspicious behavior: RenamesItself
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1312-0-0x0000000000400000-0x000000000044C000-memory.dmp