Analysis
- max time kernel
141s - max time network
130s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
25/03/2024, 14:24
General
- Target microzx.scr.exe
- Size 740KB
- Sample240325-rqq2eade8t
- SHA256 d90243827ee248cafbd1fc8b858e239f620106882989ca7a3c5452dc7bb595f2
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.gmail.com
-
Port
587
-
Username
-
Password
tssveohxktcpzhdm
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.gmail.com
-
Port
587
-
Username
-
Password
tssveohxktcpzhdm
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- 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 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\microzx.scr.exe"C:\Users\Admin\AppData\Local\Temp\microzx.scr.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\microzx.scr.exe"C:\Users\Admin\AppData\Local\Temp\microzx.scr.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
microzx.scr.exe.log
memory/876-11-0x0000000074900000-0x00000000750B0000-memory.dmp
memory/876-1-0x0000000074900000-0x00000000750B0000-memory.dmp
memory/876-2-0x00000000058B0000-0x000000000591E000-memory.dmp
memory/876-3-0x0000000005A60000-0x0000000005A70000-memory.dmp
memory/876-4-0x0000000006020000-0x00000000065C4000-memory.dmp
memory/876-5-0x00000000059C0000-0x0000000005A52000-memory.dmp
memory/876-6-0x0000000005B10000-0x0000000005BAC000-memory.dmp
memory/876-7-0x0000000005950000-0x0000000005958000-memory.dmp
memory/876-0-0x0000000000E00000-0x0000000000EC0000-memory.dmp
memory/952-8-0x0000000000400000-0x0000000000440000-memory.dmp
memory/952-12-0x0000000074900000-0x00000000750B0000-memory.dmp
memory/952-13-0x0000000005580000-0x0000000005590000-memory.dmp
memory/952-14-0x0000000005590000-0x00000000055F6000-memory.dmp
memory/952-15-0x0000000006D00000-0x0000000006D50000-memory.dmp
memory/952-16-0x0000000006EA0000-0x0000000006EAA000-memory.dmp
memory/952-17-0x0000000074900000-0x00000000750B0000-memory.dmp
memory/952-18-0x0000000005580000-0x0000000005590000-memory.dmp