amadey | ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorku.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplons.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorku.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorku.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplons.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplons.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	amers.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	3d3d9d50e5.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorku.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 20 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	axplons.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	axplons.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3d3d9d50e5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	axplons.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	amers.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	3d3d9d50e5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	axplons.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	amers.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	axplons.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	axplons.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorku.exe

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	amers.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	explorku.exe

Executes dropped EXE 9 IoCs

pid	Process
3540	explorku.exe
4108	explorku.exe
1464	amers.exe
1192	axplons.exe
3780	3d3d9d50e5.exe
2344	axplons.exe
2756	explorku.exe
5056	explorku.exe
4948	axplons.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-1-5-21-3571316656-3665257725-2415531812-1000\Software\Wine	explorku.exe
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Wine	amers.exe
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Wine	axplons.exe
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Wine	axplons.exe
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Wine	axplons.exe

Themida packer 36 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/4548-0-0x0000000000030000-0x0000000000572000-memory.dmp	themida
behavioral1/memory/4548-3-0x0000000000030000-0x0000000000572000-memory.dmp	themida
behavioral1/memory/4548-2-0x0000000000030000-0x0000000000572000-memory.dmp	themida
behavioral1/memory/4548-1-0x0000000000030000-0x0000000000572000-memory.dmp	themida
behavioral1/memory/4548-4-0x0000000000030000-0x0000000000572000-memory.dmp	themida
behavioral1/memory/4548-5-0x0000000000030000-0x0000000000572000-memory.dmp	themida
behavioral1/memory/4548-6-0x0000000000030000-0x0000000000572000-memory.dmp	themida
behavioral1/memory/4548-7-0x0000000000030000-0x0000000000572000-memory.dmp	themida
behavioral1/files/0x0008000000022b21-13.dat	themida
behavioral1/memory/4548-20-0x0000000000030000-0x0000000000572000-memory.dmp	themida
behavioral1/memory/3540-21-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/3540-26-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/3540-25-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/3540-27-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/3540-28-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/3540-24-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/3540-23-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/3540-22-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/4108-35-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/3540-61-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/files/0x0007000000023499-101.dat	themida
behavioral1/memory/3780-115-0x0000000000060000-0x00000000006D5000-memory.dmp	themida
behavioral1/memory/3780-118-0x0000000000060000-0x00000000006D5000-memory.dmp	themida
behavioral1/memory/3780-116-0x0000000000060000-0x00000000006D5000-memory.dmp	themida
behavioral1/memory/3780-119-0x0000000000060000-0x00000000006D5000-memory.dmp	themida
behavioral1/memory/3780-117-0x0000000000060000-0x00000000006D5000-memory.dmp	themida
behavioral1/memory/3780-121-0x0000000000060000-0x00000000006D5000-memory.dmp	themida
behavioral1/memory/3780-122-0x0000000000060000-0x00000000006D5000-memory.dmp	themida
behavioral1/memory/3780-120-0x0000000000060000-0x00000000006D5000-memory.dmp	themida
behavioral1/memory/3780-123-0x0000000000060000-0x00000000006D5000-memory.dmp	themida
behavioral1/memory/3540-124-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/3780-126-0x0000000000060000-0x00000000006D5000-memory.dmp	themida
behavioral1/memory/2756-146-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/2756-148-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/5056-178-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida
behavioral1/memory/5056-181-0x0000000000D70000-0x00000000012B2000-memory.dmp	themida

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3d3d9d50e5.exe = "C:\\Users\\Admin\\1000006002\\3d3d9d50e5.exe"	explorku.exe

Checks whether UAC is enabled 1 TTPs 5 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	3d3d9d50e5.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	explorku.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	explorku.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	explorku.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

pid	Process
4108	explorku.exe
1464	amers.exe
1192	axplons.exe
2344	axplons.exe
4948	axplons.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3540 set thread context of 4108	3540	explorku.exe	92

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\explorku.job	ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b.exe
File created	C:\Windows\Tasks\axplons.job	amers.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4108	explorku.exe
4108	explorku.exe
1464	amers.exe
1464	amers.exe
1192	axplons.exe
1192	axplons.exe
2344	axplons.exe
2344	axplons.exe
4948	axplons.exe
4948	axplons.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4548 wrote to memory of 3540	4548	ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b.exe	86
PID 4548 wrote to memory of 3540	4548	ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b.exe	86
PID 4548 wrote to memory of 3540	4548	ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b.exe	86
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 4108	3540	explorku.exe	92
PID 3540 wrote to memory of 1464	3540	explorku.exe	96
PID 3540 wrote to memory of 1464	3540	explorku.exe	96
PID 3540 wrote to memory of 1464	3540	explorku.exe	96
PID 1464 wrote to memory of 1192	1464	amers.exe	97
PID 1464 wrote to memory of 1192	1464	amers.exe	97
PID 1464 wrote to memory of 1192	1464	amers.exe	97
PID 3540 wrote to memory of 3780	3540	explorku.exe	98
PID 3540 wrote to memory of 3780	3540	explorku.exe	98
PID 3540 wrote to memory of 3780	3540	explorku.exe	98

C:\Users\Admin\AppData\Local\Temp\ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b.exe
"C:\Users\Admin\AppData\Local\Temp\ffc1a598cf780325b9b37acebce7d7df9d563b820da56194b35cafe2fa3d459b.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
  "C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:3540
- - C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
    "C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe"
    3⤵
    - 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:4108
- - C:\Users\Admin\AppData\Local\Temp\1000005001\amers.exe
    "C:\Users\Admin\AppData\Local\Temp\1000005001\amers.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Checks computer location settings
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1464
  - - C:\Users\Admin\AppData\Local\Temp\7af68cdb52\axplons.exe
      "C:\Users\Admin\AppData\Local\Temp\7af68cdb52\axplons.exe"
      4⤵
      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:1192
- - C:\Users\Admin\1000006002\3d3d9d50e5.exe
    "C:\Users\Admin\1000006002\3d3d9d50e5.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Checks whether UAC is enabled
    PID:3780

C:\Users\Admin\AppData\Local\Temp\7af68cdb52\axplons.exe
C:\Users\Admin\AppData\Local\Temp\7af68cdb52\axplons.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:2344

C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
PID:2756

C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
PID:5056

C:\Users\Admin\AppData\Local\Temp\7af68cdb52\axplons.exe
C:\Users\Admin\AppData\Local\Temp\7af68cdb52\axplons.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:4948

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion