Analysis
- max time kernel
149s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
01/05/2022, 23:46
General
- Target 4bb62cdf1c5aa4facadf07845cababdefcea543c632aaaa8a4e16752da70f01b.exe
- Size 895KB
- Sample220501-3snvlsbdep
- SHA256 4bb62cdf1c5aa4facadf07845cababdefcea543c632aaaa8a4e16752da70f01b
Malware Config
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 1 IoCs
- Executes dropped EXE 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 2 IoCs
- 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 42 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.
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 6 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\4bb62cdf1c5aa4facadf07845cababdefcea543c632aaaa8a4e16752da70f01b.exe"C:\Users\Admin\AppData\Local\Temp\4bb62cdf1c5aa4facadf07845cababdefcea543c632aaaa8a4e16752da70f01b.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"2⤵
- Executes dropped EXE
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe'3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
D.dll
AddInProcess32.exe
AddInProcess32.exe
AgileDotNetRT.dll
memory/3128-131-0x00000000051E0000-0x0000000005784000-memory.dmp
memory/3128-132-0x0000000004C80000-0x0000000004CC4000-memory.dmp
memory/3128-133-0x0000000004D70000-0x0000000004E02000-memory.dmp
memory/3128-135-0x0000000073D90000-0x0000000073E19000-memory.dmp
memory/3128-130-0x00000000001E0000-0x00000000002C6000-memory.dmp
memory/3500-156-0x0000000007CE0000-0x0000000007CEA000-memory.dmp
memory/3500-159-0x0000000008010000-0x000000000802A000-memory.dmp
memory/3500-155-0x0000000006DE0000-0x0000000006DFA000-memory.dmp
memory/3500-158-0x0000000007FC0000-0x0000000007FCE000-memory.dmp
memory/3500-157-0x0000000007ED0000-0x0000000007F66000-memory.dmp
memory/3500-145-0x0000000003010000-0x0000000003046000-memory.dmp
memory/3500-160-0x0000000008000000-0x0000000008008000-memory.dmp
memory/3500-147-0x0000000005BB0000-0x00000000061D8000-memory.dmp
memory/3500-148-0x0000000005890000-0x00000000058B2000-memory.dmp
memory/3500-149-0x0000000005930000-0x0000000005996000-memory.dmp
memory/3500-150-0x00000000069C0000-0x00000000069DE000-memory.dmp
memory/3500-151-0x0000000006F10000-0x0000000006F42000-memory.dmp
memory/3500-152-0x0000000070B30000-0x0000000070B7C000-memory.dmp
memory/3500-153-0x0000000006EF0000-0x0000000006F0E000-memory.dmp
memory/3500-154-0x00000000082A0000-0x000000000891A000-memory.dmp
memory/4240-146-0x0000000006C40000-0x0000000006CDC000-memory.dmp
memory/4240-144-0x00000000069E0000-0x00000000069EA000-memory.dmp
memory/4240-143-0x0000000006A30000-0x0000000006A80000-memory.dmp
memory/4240-141-0x0000000006490000-0x00000000064F6000-memory.dmp
memory/4240-138-0x0000000000400000-0x0000000000486000-memory.dmp