amadey | d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332

Virtualization/Sandbox Evasion

Processes:

d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exeexplorgu.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.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

7 3480 rundll32.exe
10 4928 rundll32.exe
Downloads MZ/PE file

flow	pid	process
7	3480	rundll32.exe
10	4928	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

Processes:

explorgu.exed976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe

description	ioc	process
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	d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe

Executes dropped EXE 8 IoCs

Processes:

explorgu.exeyoffens_crypted_EASY.exebullpen12.exelummalg.exeISetup3.exeu46k.0.exeu46k.1.exeTypeId.exe

pid process

4080 explorgu.exe
4864 yoffens_crypted_EASY.exe
2844 bullpen12.exe
5600 lummalg.exe
5420 ISetup3.exe
4236 u46k.0.exe
4772 u46k.1.exe
1392 TypeId.exe

pid	process
4080	explorgu.exe
4864	yoffens_crypted_EASY.exe
2844	bullpen12.exe
5600	lummalg.exe
5420	ISetup3.exe
4236	u46k.0.exe
4772	u46k.1.exe
1392	TypeId.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:

d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exeexplorgu.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1233663403-1277323514-675434005-1000\Software\Wine	d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe
Key opened	\REGISTRY\USER\S-1-5-21-1233663403-1277323514-675434005-1000\Software\Wine	explorgu.exe

Loads dropped DLL 3 IoCs

Processes:

rundll32.exerundll32.exerundll32.exe

pid process

4068 rundll32.exe
3480 rundll32.exe
4928 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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exeexplorgu.exe

pid process

2624 d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe
4080 explorgu.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

lummalg.exe

description pid process target process

PID 5600 set thread context of 5928 5600 lummalg.exe RegAsm.exe
Drops file in Windows directory 1 IoCs

Processes:

d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe

description ioc process

File created C:\Windows\Tasks\explorgu.job d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4128 5928 WerFault.exe RegAsm.exe
3932 5420 WerFault.exe ISetup3.exe

pid	process
4068	rundll32.exe
3480	rundll32.exe
4928	rundll32.exe

description	pid	process	target process
PID 5600 set thread context of 5928	5600	lummalg.exe	RegAsm.exe

description	ioc	process
File created	C:\Windows\Tasks\explorgu.job	d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe

pid	pid_target	process	target process
4128	5928	WerFault.exe	RegAsm.exe
3932	5420	WerFault.exe	ISetup3.exe

Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

u46k.1.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u46k.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u46k.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u46k.1.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

Processes:

u46k.0.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	u46k.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u46k.0.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

Processes:

d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exeexplorgu.exerundll32.exeyoffens_crypted_EASY.exepowershell.exeu46k.0.exeSystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exeTypeId.exe

pid	process
2624	d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe
2624	d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe
4080	explorgu.exe
4080	explorgu.exe
3480	rundll32.exe
3480	rundll32.exe
3480	rundll32.exe
3480	rundll32.exe
3480	rundll32.exe
3480	rundll32.exe
4864	yoffens_crypted_EASY.exe
3480	rundll32.exe
3480	rundll32.exe
3480	rundll32.exe
3480	rundll32.exe
592	powershell.exe
592	powershell.exe
4236	u46k.0.exe
4236	u46k.0.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1392	TypeId.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

yoffens_crypted_EASY.exepowershell.exebullpen12.exeSystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exeTypeId.exe

description	pid	process
Token: SeDebugPrivilege	4864	yoffens_crypted_EASY.exe
Token: SeBackupPrivilege	4864	yoffens_crypted_EASY.exe
Token: SeSecurityPrivilege	4864	yoffens_crypted_EASY.exe
Token: SeSecurityPrivilege	4864	yoffens_crypted_EASY.exe
Token: SeSecurityPrivilege	4864	yoffens_crypted_EASY.exe
Token: SeSecurityPrivilege	4864	yoffens_crypted_EASY.exe
Token: SeDebugPrivilege	592	powershell.exe
Token: SeDebugPrivilege	2844	bullpen12.exe
Token: SeDebugPrivilege	5220	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
Token: SeDebugPrivilege	1392	TypeId.exe

Suspicious use of FindShellTrayWindow 8 IoCs

Processes:

d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exeu46k.1.exe

pid	process
2624	d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe
4772	u46k.1.exe
4772	u46k.1.exe
4772	u46k.1.exe
4772	u46k.1.exe
4772	u46k.1.exe
4772	u46k.1.exe
4772	u46k.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

Processes:

u46k.1.exe

pid process

4772 u46k.1.exe
4772 u46k.1.exe
4772 u46k.1.exe
4772 u46k.1.exe
4772 u46k.1.exe
4772 u46k.1.exe
4772 u46k.1.exe

pid	process
4772	u46k.1.exe
4772	u46k.1.exe
4772	u46k.1.exe
4772	u46k.1.exe
4772	u46k.1.exe
4772	u46k.1.exe
4772	u46k.1.exe

Suspicious use of WriteProcessMemory 40 IoCs

Processes:

explorgu.exerundll32.exerundll32.exelummalg.exeISetup3.exeu46k.1.exe

description	pid	process	target process
PID 4080 wrote to memory of 4864	4080	explorgu.exe	yoffens_crypted_EASY.exe
PID 4080 wrote to memory of 4864	4080	explorgu.exe	yoffens_crypted_EASY.exe
PID 4080 wrote to memory of 4864	4080	explorgu.exe	yoffens_crypted_EASY.exe
PID 4080 wrote to memory of 4068	4080	explorgu.exe	rundll32.exe
PID 4080 wrote to memory of 4068	4080	explorgu.exe	rundll32.exe
PID 4080 wrote to memory of 4068	4080	explorgu.exe	rundll32.exe
PID 4068 wrote to memory of 3480	4068	rundll32.exe	rundll32.exe
PID 4068 wrote to memory of 3480	4068	rundll32.exe	rundll32.exe
PID 3480 wrote to memory of 2540	3480	rundll32.exe	netsh.exe
PID 3480 wrote to memory of 2540	3480	rundll32.exe	netsh.exe
PID 3480 wrote to memory of 592	3480	rundll32.exe	powershell.exe
PID 3480 wrote to memory of 592	3480	rundll32.exe	powershell.exe
PID 4080 wrote to memory of 2844	4080	explorgu.exe	bullpen12.exe
PID 4080 wrote to memory of 2844	4080	explorgu.exe	bullpen12.exe
PID 4080 wrote to memory of 5600	4080	explorgu.exe	lummalg.exe
PID 4080 wrote to memory of 5600	4080	explorgu.exe	lummalg.exe
PID 4080 wrote to memory of 5600	4080	explorgu.exe	lummalg.exe
PID 5600 wrote to memory of 5928	5600	lummalg.exe	RegAsm.exe
PID 5600 wrote to memory of 5928	5600	lummalg.exe	RegAsm.exe
PID 5600 wrote to memory of 5928	5600	lummalg.exe	RegAsm.exe
PID 5600 wrote to memory of 5928	5600	lummalg.exe	RegAsm.exe
PID 5600 wrote to memory of 5928	5600	lummalg.exe	RegAsm.exe
PID 5600 wrote to memory of 5928	5600	lummalg.exe	RegAsm.exe
PID 5600 wrote to memory of 5928	5600	lummalg.exe	RegAsm.exe
PID 5600 wrote to memory of 5928	5600	lummalg.exe	RegAsm.exe
PID 5600 wrote to memory of 5928	5600	lummalg.exe	RegAsm.exe
PID 4080 wrote to memory of 4928	4080	explorgu.exe	rundll32.exe
PID 4080 wrote to memory of 4928	4080	explorgu.exe	rundll32.exe
PID 4080 wrote to memory of 4928	4080	explorgu.exe	rundll32.exe
PID 4080 wrote to memory of 5420	4080	explorgu.exe	ISetup3.exe
PID 4080 wrote to memory of 5420	4080	explorgu.exe	ISetup3.exe
PID 4080 wrote to memory of 5420	4080	explorgu.exe	ISetup3.exe
PID 5420 wrote to memory of 4236	5420	ISetup3.exe	u46k.0.exe
PID 5420 wrote to memory of 4236	5420	ISetup3.exe	u46k.0.exe
PID 5420 wrote to memory of 4236	5420	ISetup3.exe	u46k.0.exe
PID 5420 wrote to memory of 4772	5420	ISetup3.exe	u46k.1.exe
PID 5420 wrote to memory of 4772	5420	ISetup3.exe	u46k.1.exe
PID 5420 wrote to memory of 4772	5420	ISetup3.exe	u46k.1.exe
PID 4772 wrote to memory of 5220	4772	u46k.1.exe	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
PID 4772 wrote to memory of 5220	4772	u46k.1.exe	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.exe
"C:\Users\Admin\AppData\Local\Temp\d976e0a0a5ba6eef37a509186ef3c2732f1065b3bb34e96d4d0ac0f89d8f5332.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:2624

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:4080
- C:\Users\Admin\AppData\Local\Temp\1001001001\yoffens_crypted_EASY.exe
  "C:\Users\Admin\AppData\Local\Temp\1001001001\yoffens_crypted_EASY.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4864
- 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:4068
- - 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:3480
  - - C:\Windows\system32\netsh.exe
      netsh wlan show profiles
      4⤵
      PID:2540
  - - 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\233663403127_Desktop.zip' -CompressionLevel Optimal
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:592
- C:\Users\Admin\AppData\Local\Temp\1001007001\bullpen12.exe
  "C:\Users\Admin\AppData\Local\Temp\1001007001\bullpen12.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2844
- C:\Users\Admin\AppData\Local\Temp\1001008001\lummalg.exe
  "C:\Users\Admin\AppData\Local\Temp\1001008001\lummalg.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:5600
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    PID:5928
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5928 -s 476
      4⤵
      Program crash
      PID:4128
- 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:4928
- C:\Users\Admin\AppData\Local\Temp\1001010001\ISetup3.exe
  "C:\Users\Admin\AppData\Local\Temp\1001010001\ISetup3.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:5420
- - C:\Users\Admin\AppData\Local\Temp\u46k.0.exe
    "C:\Users\Admin\AppData\Local\Temp\u46k.0.exe"
    3⤵
    - Executes dropped EXE
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:4236
- - C:\Users\Admin\AppData\Local\Temp\u46k.1.exe
    "C:\Users\Admin\AppData\Local\Temp\u46k.1.exe"
    3⤵
    - Executes dropped EXE
    - Checks SCSI registry key(s)
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:4772
  - - C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
      "C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD1
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:5220
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5420 -s 1160
    3⤵
    - Program crash
    PID:3932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5928 -ip 5928
1⤵
PID:5472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 5420 -ip 5420
1⤵
PID:4672

C:\Users\Admin\AppData\Local\CanReuseTransform\fyvqu\TypeId.exe
C:\Users\Admin\AppData\Local\CanReuseTransform\fyvqu\TypeId.exe
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion