Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
05/03/2024, 04:46
General
- Target b3d0b8c065ad75dfd646829bc7c87735.exe
- Size 67KB
- Sample240305-fedfdsfd76
- SHA256 61560f470822a249950e3d35574aae0ee9c93da31c1fd6f001c0cec97069a4fb
Malware Config
Signatures
- A310logger
A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.
- A310logger Executable 2 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
- 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 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\b3d0b8c065ad75dfd646829bc7c87735.exe"C:\Users\Admin\AppData\Local\Temp\b3d0b8c065ad75dfd646829bc7c87735.exe"1⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
MZ.exe
memory/3696-16-0x00007FF832A30000-0x00007FF8333D1000-memory.dmp
memory/3696-17-0x0000000000D00000-0x0000000000D10000-memory.dmp
memory/3696-21-0x00007FF832A30000-0x00007FF8333D1000-memory.dmp
memory/3696-22-0x00007FF832A30000-0x00007FF8333D1000-memory.dmp
memory/4188-0-0x000000001B080000-0x000000001B0E2000-memory.dmp
memory/4188-1-0x00007FF832A30000-0x00007FF8333D1000-memory.dmp
memory/4188-3-0x00007FF832A30000-0x00007FF8333D1000-memory.dmp
memory/4188-4-0x0000000000AE0000-0x0000000000AF0000-memory.dmp
memory/4188-2-0x000000001B210000-0x000000001B2B6000-memory.dmp
memory/4188-24-0x00007FF832A30000-0x00007FF8333D1000-memory.dmp