Analysis
- max time kernel
120s - max time network
123s - platform
windows7_x64 - resource
win7-20230712-en - resource tags
- submitted
20/07/2023, 11:59
General
- Target gvailantzx.exe
- Size 616KB
- Sample230720-n5qgmsgd57
- SHA256 0d03f0e57bfc9a9b4e583404b127ae9adff260762252e77d11c95bc6181188ce
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
brill.myhostcpl.com
-
Port
587
-
Username
-
Password
YRv0W)FH%o9S
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 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 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\gvailantzx.exe"C:\Users\Admin\AppData\Local\Temp\gvailantzx.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\gvailantzx.exe"C:\Users\Admin\AppData\Local\Temp\gvailantzx.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/608-74-0x0000000000400000-0x0000000000430000-memory.dmp
memory/608-75-0x0000000074350000-0x0000000074A3E000-memory.dmp
memory/608-85-0x0000000000390000-0x00000000003D0000-memory.dmp
memory/608-84-0x0000000074350000-0x0000000074A3E000-memory.dmp
memory/608-76-0x0000000000390000-0x00000000003D0000-memory.dmp
memory/608-68-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/608-72-0x0000000000400000-0x0000000000430000-memory.dmp
memory/608-70-0x0000000000400000-0x0000000000430000-memory.dmp
memory/608-62-0x0000000000400000-0x0000000000430000-memory.dmp
memory/608-64-0x0000000000400000-0x0000000000430000-memory.dmp
memory/608-66-0x0000000000400000-0x0000000000430000-memory.dmp
memory/608-67-0x0000000000400000-0x0000000000430000-memory.dmp
memory/2316-55-0x0000000074350000-0x0000000074A3E000-memory.dmp
memory/2316-61-0x00000000052B0000-0x000000000531A000-memory.dmp
memory/2316-60-0x0000000000440000-0x000000000044A000-memory.dmp
memory/2316-54-0x00000000011A0000-0x0000000001240000-memory.dmp
memory/2316-59-0x0000000001140000-0x0000000001180000-memory.dmp
memory/2316-58-0x0000000074350000-0x0000000074A3E000-memory.dmp
memory/2316-77-0x0000000074350000-0x0000000074A3E000-memory.dmp
memory/2316-57-0x0000000000430000-0x0000000000440000-memory.dmp
memory/2316-56-0x0000000001140000-0x0000000001180000-memory.dmp