Analysis
- max time kernel
142s - max time network
127s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
23/10/2024, 00:19
General
- Target VIZSPLOIT.exe
- Size 4.2MB
- Sample241023-amfb3a1fpc
- SHA256 e23062cd6dad6012797a7e52358e73c1597900ae3a4f0da83daff4c2bf9854b3
Malware Config
Extracted
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stealc
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game
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http://193.233.112.44
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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
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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
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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
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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
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C:\Users\Admin\AppData\Roaming\VIZSPLOIT.exe"C:\Users\Admin\AppData\Roaming\VIZSPLOIT.exe"2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c mode con cols=853⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\mode.commode con cols=854⤵
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c mode con lines=253⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\mode.commode con lines=254⤵
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c TITLE Visploit3⤵
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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/636-32-0x0000000000400000-0x0000000000B78000-memory.dmp
memory/636-34-0x00000000770F4000-0x00000000770F6000-memory.dmp
memory/636-36-0x0000000000400000-0x0000000000B78000-memory.dmp
memory/636-35-0x0000000000400000-0x0000000000B78000-memory.dmp
memory/636-123-0x0000000000400000-0x0000000000B78000-memory.dmp
memory/1600-55-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/1600-163-0x00000000003A0000-0x0000000000603000-memory.dmp
memory/1600-19-0x00000000003A0000-0x0000000000603000-memory.dmp
memory/3716-0-0x00007FFE03253000-0x00007FFE03255000-memory.dmp
memory/3716-3-0x00007FFE03250000-0x00007FFE03D11000-memory.dmp
memory/3716-4-0x000000001C0A0000-0x000000001C4A6000-memory.dmp
memory/3716-2-0x00000000017D0000-0x00000000017D6000-memory.dmp
memory/3716-1-0x0000000000C00000-0x000000000102A000-memory.dmp
memory/3716-5-0x00000000017E0000-0x00000000017E6000-memory.dmp
memory/3716-33-0x00007FFE03250000-0x00007FFE03D11000-memory.dmp