amadey | b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorha.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe

Blocklisted process makes network request 2 IoCs

flow	pid	Process
3	644	rundll32.exe
4	5076	rundll32.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorha.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorha.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe

Executes dropped EXE 1 IoCs

pid	Process
3116	explorha.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-293923083-2364846840-4256557006-1000\Software\Wine	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe
Key opened	\REGISTRY\USER\S-1-5-21-293923083-2364846840-4256557006-1000\Software\Wine	explorha.exe

Loads dropped DLL 3 IoCs

pid	Process
4664	rundll32.exe
644	rundll32.exe
5076	rundll32.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2148	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe
3116	explorha.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\explorha.job	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4832	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
2148	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe
2148	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe
3116	explorha.exe
3116	explorha.exe
644	rundll32.exe
644	rundll32.exe
644	rundll32.exe
644	rundll32.exe
644	rundll32.exe
644	rundll32.exe
644	rundll32.exe
644	rundll32.exe
644	rundll32.exe
644	rundll32.exe
4832	powershell.exe
4832	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4832	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2148	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 3116	2148	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe	80
PID 2148 wrote to memory of 3116	2148	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe	80
PID 2148 wrote to memory of 3116	2148	b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe	80
PID 3116 wrote to memory of 4664	3116	explorha.exe	81
PID 3116 wrote to memory of 4664	3116	explorha.exe	81
PID 3116 wrote to memory of 4664	3116	explorha.exe	81
PID 4664 wrote to memory of 644	4664	rundll32.exe	82
PID 4664 wrote to memory of 644	4664	rundll32.exe	82
PID 644 wrote to memory of 2028	644	rundll32.exe	83
PID 644 wrote to memory of 2028	644	rundll32.exe	83
PID 644 wrote to memory of 4832	644	rundll32.exe	85
PID 644 wrote to memory of 4832	644	rundll32.exe	85
PID 3116 wrote to memory of 5076	3116	explorha.exe	87
PID 3116 wrote to memory of 5076	3116	explorha.exe	87
PID 3116 wrote to memory of 5076	3116	explorha.exe	87

C:\Users\Admin\AppData\Local\Temp\b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe
"C:\Users\Admin\AppData\Local\Temp\b3db68faa78c964de395b645d992e265cbd08d8ca826ef912646d4c45a002174.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Users\Admin\AppData\Local\Temp\09fd851a4f\explorha.exe
  "C:\Users\Admin\AppData\Local\Temp\09fd851a4f\explorha.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3116
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\a091ec0a6e2227\cred64.dll, Main
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:4664
  - - C:\Windows\system32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\a091ec0a6e2227\cred64.dll, Main
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:644
    - - C:\Windows\system32\netsh.exe
        
        netsh wlan show profiles
        5⤵
        
        PID:2028
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\939230832364_Desktop.zip' -CompressionLevel Optimal
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4832
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\a091ec0a6e2227\clip64.dll, Main
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    PID:5076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Query Registry

3

System Information Discovery

T1082

Virtualization/Sandbox Evasion