Analysis
- max time kernel
114s - max time network
127s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
05/01/2023, 07:17
General
- Target bc426a3b221d04659fd1d4738fe88171.exe
- Size 518KB
- Sample230105-h4c72abc25
- SHA256 ceeb2e11ecbce4f2948f5505afa83c9e7594284d701234791c8d32d0b05521de
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Executes dropped EXE 2 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.
- 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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\bc426a3b221d04659fd1d4738fe88171.exe"C:\Users\Admin\AppData\Local\Temp\bc426a3b221d04659fd1d4738fe88171.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\bxpaovfcn.exe"C:\Users\Admin\AppData\Local\Temp\bxpaovfcn.exe" C:\Users\Admin\AppData\Local\Temp\bcmwva.ih2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\bxpaovfcn.exe"C:\Users\Admin\AppData\Local\Temp\bxpaovfcn.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
bcmwva.ih
bxpaovfcn.exe
bxpaovfcn.exe
bxpaovfcn.exe
fhfwz.tk
memory/2588-139-0x00000000048D0000-0x0000000004E74000-memory.dmp
memory/2588-140-0x0000000004E80000-0x0000000004F1C000-memory.dmp
memory/2588-141-0x0000000000400000-0x0000000000449000-memory.dmp
memory/2588-142-0x0000000005820000-0x0000000005886000-memory.dmp
memory/2588-143-0x0000000006180000-0x0000000006212000-memory.dmp
memory/2588-144-0x00000000063E0000-0x0000000006430000-memory.dmp
memory/2588-145-0x0000000006510000-0x000000000651A000-memory.dmp