Analysis
- max time kernel
90s - max time network
142s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
29/06/2022, 15:54
General
- Target vbc.exe
- Size 18KB
- Sample220629-tb7fyscdf9
- SHA256 1bbdd6534336280436213b88cf3075db3754a027cbf39351dd81f923ed0ed137
Malware Config
Extracted
-
snakekeylogger
-
https://api.telegram.org/bot5504175206:AAExR3WV8Olk1jqfP5FqsKLr4LCUz4WsqDI/sendMessage?chat_id=5370021137
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger Payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Uses the VBS compiler for execution 1 TTPs
- 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 1 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\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- 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 UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.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
memory/3036-130-0x0000000000620000-0x000000000062A000-memory.dmp
memory/3036-131-0x0000000005590000-0x0000000005B34000-memory.dmp
memory/3036-132-0x0000000005080000-0x0000000005112000-memory.dmp
memory/3036-133-0x0000000004FC0000-0x0000000004FCA000-memory.dmp
memory/4332-146-0x0000000006290000-0x0000000006452000-memory.dmp
memory/4332-145-0x0000000005200000-0x000000000529C000-memory.dmp
memory/4332-144-0x0000000000400000-0x0000000000426000-memory.dmp
memory/4820-138-0x00000000056A0000-0x0000000005706000-memory.dmp
memory/4820-139-0x0000000005780000-0x00000000057E6000-memory.dmp
memory/4820-140-0x0000000005D50000-0x0000000005D6E000-memory.dmp
memory/4820-141-0x0000000007560000-0x0000000007BDA000-memory.dmp
memory/4820-142-0x0000000006260000-0x000000000627A000-memory.dmp
memory/4820-137-0x0000000004DB0000-0x0000000004DD2000-memory.dmp
memory/4820-136-0x0000000005000000-0x0000000005628000-memory.dmp
memory/4820-135-0x0000000002790000-0x00000000027C6000-memory.dmp