amadey | bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9

Virtualization/Sandbox Evasion

Processes:

bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exeexplorgu.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.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

4 3312 rundll32.exe
5 1532 rundll32.exe
Downloads MZ/PE file

flow	pid	process
4	3312	rundll32.exe
5	1532	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:

bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exeexplorgu.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorgu.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorgu.exe

Executes dropped EXE 1 IoCs

Processes:

explorgu.exe

pid process

1056 explorgu.exe

pid	process
1056	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:

bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exeexplorgu.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000\Software\Wine	bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exe
Key opened	\REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000\Software\Wine	explorgu.exe

Loads dropped DLL 3 IoCs

Processes:

rundll32.exerundll32.exerundll32.exe

pid process

3288 rundll32.exe
3312 rundll32.exe
1532 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:

bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exeexplorgu.exe

pid process

3852 bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exe
1056 explorgu.exe
Drops file in Windows directory 1 IoCs

Processes:

bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exe

description ioc process

File created C:\Windows\Tasks\explorgu.job bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3288	rundll32.exe
3312	rundll32.exe
1532	rundll32.exe

description	ioc	process
File created	C:\Windows\Tasks\explorgu.job	bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exeexplorgu.exerundll32.exepowershell.exe

pid	process
3852	bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exe
3852	bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exe
1056	explorgu.exe
1056	explorgu.exe
3312	rundll32.exe
3312	rundll32.exe
3312	rundll32.exe
3312	rundll32.exe
3312	rundll32.exe
3312	rundll32.exe
3312	rundll32.exe
3312	rundll32.exe
3312	rundll32.exe
3312	rundll32.exe
876	powershell.exe
876	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 876 powershell.exe

description	pid	process
Token: SeDebugPrivilege	876	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

explorgu.exerundll32.exerundll32.exe

description	pid	process	target process
PID 1056 wrote to memory of 3288	1056	explorgu.exe	rundll32.exe
PID 1056 wrote to memory of 3288	1056	explorgu.exe	rundll32.exe
PID 1056 wrote to memory of 3288	1056	explorgu.exe	rundll32.exe
PID 3288 wrote to memory of 3312	3288	rundll32.exe	rundll32.exe
PID 3288 wrote to memory of 3312	3288	rundll32.exe	rundll32.exe
PID 3312 wrote to memory of 4556	3312	rundll32.exe	netsh.exe
PID 3312 wrote to memory of 4556	3312	rundll32.exe	netsh.exe
PID 3312 wrote to memory of 876	3312	rundll32.exe	powershell.exe
PID 3312 wrote to memory of 876	3312	rundll32.exe	powershell.exe
PID 1056 wrote to memory of 1532	1056	explorgu.exe	rundll32.exe
PID 1056 wrote to memory of 1532	1056	explorgu.exe	rundll32.exe
PID 1056 wrote to memory of 1532	1056	explorgu.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.exe
"C:\Users\Admin\AppData\Local\Temp\bc9e77808288969ffb55b9b4288751746c1af27431a2c9d80b0988a8ba1eecd9.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
PID:3852

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:1056

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:3288

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:3312

C:\Windows\system32\netsh.exe
netsh wlan show profiles
4⤵
PID:4556

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\594324687199_Desktop.zip' -CompressionLevel Optimal
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:876

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:1532

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