Analysis
- max time kernel
131s - max time network
159s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
07/11/2022, 11:50
General
- Target SecuriteInfo.com.Win32.DropperX-gen.27279.13181.exe
- Size 12KB
- Sample221107-nzkzzaecf6
- SHA256 abe9339cbaa7e85ee67e130dafa15f9e8d1bc7fc43fa8a980a9eec144db986f1
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot5649458537:AAHJ9xP0TMghbz5VX6Z5CZQ5iPfKreu8SMs/
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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
- Adds Run key to start application 2 TTPs 1 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.27279.13181.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.27279.13181.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.27279.13181.exeC:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.DropperX-gen.27279.13181.exe2⤵
- 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
SecuriteInfo.com.Win32.DropperX-gen.27279.13181.exe.log
memory/1816-140-0x00000000053D0000-0x0000000005436000-memory.dmp
memory/1816-142-0x0000000007980000-0x0000000007FFA000-memory.dmp
memory/1816-141-0x0000000006160000-0x000000000617E000-memory.dmp
memory/1816-137-0x0000000002CE0000-0x0000000002D16000-memory.dmp
memory/1816-138-0x00000000054C0000-0x0000000005AE8000-memory.dmp
memory/1816-139-0x0000000005360000-0x00000000053C6000-memory.dmp
memory/1816-143-0x0000000006770000-0x000000000678A000-memory.dmp
memory/2288-134-0x00000000066F0000-0x0000000006782000-memory.dmp
memory/2288-132-0x0000000000AB0000-0x0000000000AB8000-memory.dmp
memory/2288-135-0x00000000066A0000-0x00000000066C2000-memory.dmp
memory/2288-133-0x00000000059C0000-0x0000000005F64000-memory.dmp
memory/2388-145-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2388-147-0x0000000005250000-0x00000000052EC000-memory.dmp
memory/2388-148-0x0000000006970000-0x00000000069C0000-memory.dmp
memory/2388-149-0x0000000006E90000-0x0000000006E9A000-memory.dmp