amadey | 3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274

Virtualization/Sandbox Evasion

Processes:

3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exeexplorgu.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorgu.exe

Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exerundll32.exe

flow pid process

3 3612 rundll32.exe
4 3132 rundll32.exe
Downloads MZ/PE file

flow	pid	process
3	3612	rundll32.exe
4	3132	rundll32.exe

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

Processes:

3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exeexplorgu.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorgu.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorgu.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe

Executes dropped EXE 1 IoCs

Processes:

explorgu.exe

pid process

2228 explorgu.exe

pid	process
2228	explorgu.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

Processes:

3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exeexplorgu.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Wine	3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe
Key opened	\REGISTRY\USER\S-1-5-21-627134735-902745853-4257352768-1000\Software\Wine	explorgu.exe

Loads dropped DLL 3 IoCs

Processes:

rundll32.exerundll32.exerundll32.exe

pid process

2160 rundll32.exe
3612 rundll32.exe
3132 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

Processes:

3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exeexplorgu.exe

pid process

4252 3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe
2228 explorgu.exe
Drops file in Windows directory 1 IoCs

Processes:

3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe

description ioc process

File created C:\Windows\Tasks\explorgu.job 3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2160	rundll32.exe
3612	rundll32.exe
3132	rundll32.exe

description	ioc	process
File created	C:\Windows\Tasks\explorgu.job	3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exeexplorgu.exerundll32.exepowershell.exe

pid	process
4252	3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe
4252	3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe
2228	explorgu.exe
2228	explorgu.exe
3612	rundll32.exe
3612	rundll32.exe
3612	rundll32.exe
3612	rundll32.exe
3612	rundll32.exe
3612	rundll32.exe
3612	rundll32.exe
3612	rundll32.exe
3612	rundll32.exe
3612	rundll32.exe
1080	powershell.exe
1080	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1080 powershell.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe

pid process

4252 3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe

description	pid	process
Token: SeDebugPrivilege	1080	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

explorgu.exerundll32.exerundll32.exe

description	pid	process	target process
PID 2228 wrote to memory of 2160	2228	explorgu.exe	rundll32.exe
PID 2228 wrote to memory of 2160	2228	explorgu.exe	rundll32.exe
PID 2228 wrote to memory of 2160	2228	explorgu.exe	rundll32.exe
PID 2160 wrote to memory of 3612	2160	rundll32.exe	rundll32.exe
PID 2160 wrote to memory of 3612	2160	rundll32.exe	rundll32.exe
PID 3612 wrote to memory of 2220	3612	rundll32.exe	netsh.exe
PID 3612 wrote to memory of 2220	3612	rundll32.exe	netsh.exe
PID 3612 wrote to memory of 1080	3612	rundll32.exe	powershell.exe
PID 3612 wrote to memory of 1080	3612	rundll32.exe	powershell.exe
PID 2228 wrote to memory of 3132	2228	explorgu.exe	rundll32.exe
PID 2228 wrote to memory of 3132	2228	explorgu.exe	rundll32.exe
PID 2228 wrote to memory of 3132	2228	explorgu.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.exe
"C:\Users\Admin\AppData\Local\Temp\3a2b1790ee5ab220c01bbd0920a3ff22cb9740131f619c72f2f9dd365ef34274.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
PID:4252

C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exe
C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.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
- Suspicious use of WriteProcessMemory
PID:2228

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2160

C:\Windows\system32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main
3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3612

C:\Windows\system32\netsh.exe
netsh wlan show profiles
4⤵
PID:2220

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\271347359027_Desktop.zip' -CompressionLevel Optimal
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1080

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\clip64.dll, Main
2⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:3132

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

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

Virtualization/Sandbox Evasion

System Information Discovery