Analysis
- max time kernel
148s - max time network
126s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
14/10/2026, 10:47
General
- Target jaffacakes118_Trojan.Win32.VBKrypt.zunc.exe
- Size 452KB
- Sample261014-mvx83aby7m
- SHA256 9b04593777e9043c68fa5bff8bc70946aa5278abbfcf05c73eb051a36d91f113
Malware Config
Signatures
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- 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 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
- 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 TTPs 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 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\jaffacakes118_Trojan.Win32.VBKrypt.zunc.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.VBKrypt.zunc.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.VBKrypt.zunc.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan.Win32.VBKrypt.zunc.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
5Credentials In Files
4Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
memory/4232-2-0x0000000002300000-0x0000000002306000-memory.dmp
memory/4232-3-0x0000000002300000-0x0000000002306000-memory.dmp
memory/4408-4-0x00000000001C0000-0x00000000001C1000-memory.dmp
memory/4408-5-0x00000000024F0000-0x0000000002500000-memory.dmp
memory/4408-6-0x0000000074A92000-0x0000000074A94000-memory.dmp
memory/4408-7-0x0000000074A90000-0x00000000750B1000-memory.dmp
memory/4408-8-0x0000000074A90000-0x00000000750B1000-memory.dmp
memory/4408-9-0x0000000074A90000-0x00000000750B1000-memory.dmp
memory/4408-10-0x0000000074A90000-0x00000000750B1000-memory.dmp
memory/4408-11-0x00000000024F0000-0x0000000002500000-memory.dmp
memory/4408-12-0x0000000074A92000-0x0000000074A94000-memory.dmp
memory/4408-13-0x0000000074A90000-0x00000000750B1000-memory.dmp