Analysis
- max time kernel
142s - max time network
125s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
19/10/2024, 07:37
General
- Target VIZSPLOIT.exe
- Size 4.2MB
- Sample241019-jf2fdswgll
- SHA256 e23062cd6dad6012797a7e52358e73c1597900ae3a4f0da83daff4c2bf9854b3
Malware Config
Extracted
-
stealc
-
game
-
http://193.233.112.44
-
url_path
/383ccd496f3c5eee.php
Signatures
- Stealc
Stealc is an infostealer written in C++.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Downloads MZ/PE file
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 2 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Themida packer 5 IoCs
Detects Themida, an advanced Windows software protection system.
- Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of WriteProcessMemory 18 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\VIZSPLOIT.exe"C:\Users\Admin\AppData\Local\Temp\VIZSPLOIT.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\gWsmPty.exe"C:\Users\Admin\AppData\Roaming\gWsmPty.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Roaming\VC_redistx64.exe"C:\Users\Admin\AppData\Roaming\VC_redistx64.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
-
C:\Users\Admin\AppData\Roaming\VIZSPLOIT.exe"C:\Users\Admin\AppData\Roaming\VIZSPLOIT.exe"2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c mode con cols=853⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\mode.commode con cols=854⤵
-
-
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c mode con lines=253⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\mode.commode con lines=254⤵
-
-
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c TITLE Visploit3⤵
-
-
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
4Replay Monitor
Loading Replay Monitor...
Downloads
mozglue.dll
nss3.dll
223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771
EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D
223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771
EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D
VC_redistx64.exe
VIZSPLOIT.exe
gWsmPty.exe
memory/2908-32-0x0000000000400000-0x0000000000B78000-memory.dmp
memory/2908-34-0x0000000077554000-0x0000000077556000-memory.dmp
memory/2908-37-0x0000000000400000-0x0000000000B78000-memory.dmp
memory/2908-36-0x0000000000400000-0x0000000000B78000-memory.dmp
memory/2908-102-0x0000000000400000-0x0000000000B78000-memory.dmp
memory/3716-60-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/3716-144-0x0000000000190000-0x00000000003F3000-memory.dmp
memory/3716-16-0x0000000000190000-0x00000000003F3000-memory.dmp
memory/4616-0-0x00007FFAB1A13000-0x00007FFAB1A15000-memory.dmp
memory/4616-3-0x00007FFAB1A10000-0x00007FFAB24D1000-memory.dmp
memory/4616-4-0x000000001C1B0000-0x000000001C5B6000-memory.dmp
memory/4616-5-0x0000000001B70000-0x0000000001B76000-memory.dmp
memory/4616-2-0x0000000001B60000-0x0000000001B66000-memory.dmp
memory/4616-1-0x0000000000E90000-0x00000000012BA000-memory.dmp
memory/4616-33-0x00007FFAB1A10000-0x00007FFAB24D1000-memory.dmp