amadey | dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0

Virtualization/Sandbox Evasion

Processes:

dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exeexplorgu.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.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 4276 rundll32.exe
4 2364 rundll32.exe
Downloads MZ/PE file

flow	pid	process
3	4276	rundll32.exe
4	2364	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:

dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exeexplorgu.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.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	dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exe

Executes dropped EXE 1 IoCs

Processes:

explorgu.exe

pid process

1100 explorgu.exe

pid	process
1100	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:

dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exeexplorgu.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-160263616-143223877-1356318919-1000\Software\Wine	dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exe
Key opened	\REGISTRY\USER\S-1-5-21-160263616-143223877-1356318919-1000\Software\Wine	explorgu.exe

Loads dropped DLL 3 IoCs

Processes:

rundll32.exerundll32.exerundll32.exe

pid process

2888 rundll32.exe
4276 rundll32.exe
2364 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:

dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exeexplorgu.exe

pid process

4520 dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exe
1100 explorgu.exe
Drops file in Windows directory 1 IoCs

Processes:

dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exe

description ioc process

File created C:\Windows\Tasks\explorgu.job dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2888	rundll32.exe
4276	rundll32.exe
2364	rundll32.exe

description	ioc	process
File created	C:\Windows\Tasks\explorgu.job	dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exeexplorgu.exerundll32.exepowershell.exe

pid	process
4520	dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exe
4520	dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exe
1100	explorgu.exe
1100	explorgu.exe
4276	rundll32.exe
4276	rundll32.exe
4276	rundll32.exe
4276	rundll32.exe
4276	rundll32.exe
4276	rundll32.exe
4276	rundll32.exe
4276	rundll32.exe
4276	rundll32.exe
4276	rundll32.exe
5100	powershell.exe
5100	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 5100 powershell.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exe

pid process

4520 dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exe

description	pid	process
Token: SeDebugPrivilege	5100	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

explorgu.exerundll32.exerundll32.exe

description	pid	process	target process
PID 1100 wrote to memory of 2888	1100	explorgu.exe	rundll32.exe
PID 1100 wrote to memory of 2888	1100	explorgu.exe	rundll32.exe
PID 1100 wrote to memory of 2888	1100	explorgu.exe	rundll32.exe
PID 2888 wrote to memory of 4276	2888	rundll32.exe	rundll32.exe
PID 2888 wrote to memory of 4276	2888	rundll32.exe	rundll32.exe
PID 4276 wrote to memory of 4216	4276	rundll32.exe	netsh.exe
PID 4276 wrote to memory of 4216	4276	rundll32.exe	netsh.exe
PID 4276 wrote to memory of 5100	4276	rundll32.exe	powershell.exe
PID 4276 wrote to memory of 5100	4276	rundll32.exe	powershell.exe
PID 1100 wrote to memory of 2364	1100	explorgu.exe	rundll32.exe
PID 1100 wrote to memory of 2364	1100	explorgu.exe	rundll32.exe
PID 1100 wrote to memory of 2364	1100	explorgu.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.exe
"C:\Users\Admin\AppData\Local\Temp\dc9c03ec6eb099a529867b8a2ab9e8f0e1923c6348aa0c924d817c28ca93c6b0.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:4520

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:1100

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:2888

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:4276

C:\Windows\system32\netsh.exe
netsh wlan show profiles
4⤵
PID:4216

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\602636161432_Desktop.zip' -CompressionLevel Optimal
4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5100

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:2364

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