Analysis
- max time kernel
143s - max time network
126s - platform
windows7_x64 - resource
win7-20231023-en - resource tags
- submitted
08/12/2023, 04:27
General
- Target SecuriteInfo.com.FileRepMalware.29201.26455.exe
- Size 406KB
- Sample231208-e234wsae21
- SHA256 b894cc268212c515d0ee2d531128f79ef1b3131b6ea41a297d1b54f23dcdecca
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 3 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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.FileRepMalware.29201.26455.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.FileRepMalware.29201.26455.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\hzwno.exe"C:\Users\Admin\AppData\Local\Temp\hzwno.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\hzwno.exe"C:\Users\Admin\AppData\Local\Temp\hzwno.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
hzwno.exe
hzwno.exe
hzwno.exe
hzwno.exe
rxwdyqzxsb.tox
hzwno.exe
hzwno.exe
hzwno.exe
memory/2596-17-0x0000000000400000-0x000000000042E000-memory.dmp
memory/2596-9-0x0000000000400000-0x000000000042E000-memory.dmp
memory/2760-14-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2760-18-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2760-19-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2760-20-0x00000000004A0000-0x00000000004E2000-memory.dmp
memory/2760-21-0x00000000746F0000-0x0000000074DDE000-memory.dmp
memory/2760-22-0x00000000047D0000-0x0000000004810000-memory.dmp
memory/2760-23-0x00000000047D0000-0x0000000004810000-memory.dmp
memory/2760-24-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2760-25-0x00000000746F0000-0x0000000074DDE000-memory.dmp
memory/2760-26-0x00000000047D0000-0x0000000004810000-memory.dmp