amadey | d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorha.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorha.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorha.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorha.exe

Blocklisted process makes network request 2 IoCs

flow	pid	Process
3	3960	rundll32.exe
4	3588	rundll32.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 10 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	d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe
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\VideoBiosVersion	explorha.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorha.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe
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	explorha.exe

Executes dropped EXE 4 IoCs

pid	Process
4252	explorha.exe
4156	explorha.exe
1108	explorha.exe
3296	explorha.exe

Identifies Wine through registry keys 2 TTPs 5 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-1-5-21-3938118698-2964058152-2337880935-1000\Software\Wine	d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe
Key opened	\REGISTRY\USER\S-1-5-21-3938118698-2964058152-2337880935-1000\Software\Wine	explorha.exe
Key opened	\REGISTRY\USER\S-1-5-21-3938118698-2964058152-2337880935-1000\Software\Wine	explorha.exe
Key opened	\REGISTRY\USER\S-1-5-21-3938118698-2964058152-2337880935-1000\Software\Wine	explorha.exe
Key opened	\REGISTRY\USER\S-1-5-21-3938118698-2964058152-2337880935-1000\Software\Wine	explorha.exe

Loads dropped DLL 3 IoCs

pid	Process
772	rundll32.exe
3960	rundll32.exe
3588	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 5 IoCs

pid	Process
3908	d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe
4252	explorha.exe
4156	explorha.exe
1108	explorha.exe
3296	explorha.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\explorha.job	d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3592	powershell.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
3908	d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe
3908	d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe
4252	explorha.exe
4252	explorha.exe
3960	rundll32.exe
3960	rundll32.exe
3960	rundll32.exe
3960	rundll32.exe
3960	rundll32.exe
3960	rundll32.exe
4156	explorha.exe
4156	explorha.exe
3960	rundll32.exe
3960	rundll32.exe
3960	rundll32.exe
3960	rundll32.exe
3592	powershell.exe
3592	powershell.exe
1108	explorha.exe
1108	explorha.exe
3296	explorha.exe
3296	explorha.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3592	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3908 wrote to memory of 4252	3908	d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe	83
PID 3908 wrote to memory of 4252	3908	d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe	83
PID 3908 wrote to memory of 4252	3908	d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe	83
PID 4252 wrote to memory of 772	4252	explorha.exe	84
PID 4252 wrote to memory of 772	4252	explorha.exe	84
PID 4252 wrote to memory of 772	4252	explorha.exe	84
PID 772 wrote to memory of 3960	772	rundll32.exe	85
PID 772 wrote to memory of 3960	772	rundll32.exe	85
PID 3960 wrote to memory of 3504	3960	rundll32.exe	86
PID 3960 wrote to memory of 3504	3960	rundll32.exe	86
PID 3960 wrote to memory of 3592	3960	rundll32.exe	89
PID 3960 wrote to memory of 3592	3960	rundll32.exe	89
PID 4252 wrote to memory of 3588	4252	explorha.exe	91
PID 4252 wrote to memory of 3588	4252	explorha.exe	91
PID 4252 wrote to memory of 3588	4252	explorha.exe	91

C:\Users\Admin\AppData\Local\Temp\d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.exe
"C:\Users\Admin\AppData\Local\Temp\d391d721d517ba77a9f28ef0ab959987f4bd879fa52d9a30fc1e7df4e543d33e.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 WriteProcessMemory
PID:3908
- 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:4252
- - 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:772
  - - 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:3960
    - - C:\Windows\system32\netsh.exe
        
        netsh wlan show profiles
        5⤵
        
        PID:3504
    - - 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\938118698296_Desktop.zip' -CompressionLevel Optimal
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3592
- - 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:3588

C:\Users\Admin\AppData\Local\Temp\09fd851a4f\explorha.exe
C:\Users\Admin\AppData\Local\Temp\09fd851a4f\explorha.exe
1⤵
- 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
PID:4156

C:\Users\Admin\AppData\Local\Temp\09fd851a4f\explorha.exe
C:\Users\Admin\AppData\Local\Temp\09fd851a4f\explorha.exe
1⤵
- 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
PID:1108

C:\Users\Admin\AppData\Local\Temp\09fd851a4f\explorha.exe
C:\Users\Admin\AppData\Local\Temp\09fd851a4f\explorha.exe
1⤵
- 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
PID:3296

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