amadey | 25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	16e77deb04.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__	axplons.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368.bin.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__	explorku.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorku.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	amers.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\SystemBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368.bin.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\SystemBiosVersion	axplons.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	16e77deb04.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\SystemBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	amers.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	amers.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	axplons.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	axplons.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	16e77deb04.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	axplons.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368.bin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	axplons.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	25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368.bin.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	explorku.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	amers.exe

Executes dropped EXE 9 IoCs

pid	Process
1336	explorku.exe
3788	amers.exe
648	explorku.exe
4352	axplons.exe
4800	16e77deb04.exe
3788	explorku.exe
648	axplons.exe
3700	explorku.exe
2492	axplons.exe

Identifies Wine through registry keys 2 TTPs 4 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	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 52 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/4436-0-0x0000000000800000-0x0000000000D4A000-memory.dmp	themida
behavioral2/memory/4436-1-0x0000000000800000-0x0000000000D4A000-memory.dmp	themida
behavioral2/memory/4436-2-0x0000000000800000-0x0000000000D4A000-memory.dmp	themida
behavioral2/memory/4436-3-0x0000000000800000-0x0000000000D4A000-memory.dmp	themida
behavioral2/memory/4436-4-0x0000000000800000-0x0000000000D4A000-memory.dmp	themida
behavioral2/memory/4436-8-0x0000000000800000-0x0000000000D4A000-memory.dmp	themida
behavioral2/memory/4436-7-0x0000000000800000-0x0000000000D4A000-memory.dmp	themida
behavioral2/memory/4436-6-0x0000000000800000-0x0000000000D4A000-memory.dmp	themida
behavioral2/memory/4436-5-0x0000000000800000-0x0000000000D4A000-memory.dmp	themida
behavioral2/files/0x00030000000229de-14.dat	themida
behavioral2/memory/1336-22-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/4436-21-0x0000000000800000-0x0000000000D4A000-memory.dmp	themida
behavioral2/memory/1336-24-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/1336-25-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/1336-29-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/1336-30-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/1336-28-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/1336-26-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/1336-23-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/1336-27-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/648-51-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/648-53-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/648-57-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/648-56-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/648-54-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/648-55-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/648-52-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/648-58-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/648-74-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/files/0x000800000002346b-79.dat	themida
behavioral2/memory/1336-92-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/4800-94-0x00000000006F0000-0x0000000000D69000-memory.dmp	themida
behavioral2/memory/4800-97-0x00000000006F0000-0x0000000000D69000-memory.dmp	themida
behavioral2/memory/4800-98-0x00000000006F0000-0x0000000000D69000-memory.dmp	themida
behavioral2/memory/4800-96-0x00000000006F0000-0x0000000000D69000-memory.dmp	themida
behavioral2/memory/4800-95-0x00000000006F0000-0x0000000000D69000-memory.dmp	themida
behavioral2/memory/4800-101-0x00000000006F0000-0x0000000000D69000-memory.dmp	themida
behavioral2/memory/4800-99-0x00000000006F0000-0x0000000000D69000-memory.dmp	themida
behavioral2/memory/4800-100-0x00000000006F0000-0x0000000000D69000-memory.dmp	themida
behavioral2/memory/4800-102-0x00000000006F0000-0x0000000000D69000-memory.dmp	themida
behavioral2/memory/4800-105-0x00000000006F0000-0x0000000000D69000-memory.dmp	themida
behavioral2/memory/3788-121-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/files/0x00030000000229de-118.dat	themida
behavioral2/memory/3788-126-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/3788-127-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/3788-125-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/3788-123-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/3788-124-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/3788-122-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/3788-120-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/3788-129-0x0000000000560000-0x0000000000AAA000-memory.dmp	themida
behavioral2/memory/3700-161-0x0000000000560000-0x0000000000AAA000-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\16e77deb04.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1000014001\\16e77deb04.exe"	explorku.exe

Checks whether UAC is enabled 1 TTPs 6 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
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	16e77deb04.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	25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368.bin.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	explorku.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
3788	amers.exe
4352	axplons.exe
648	axplons.exe
2492	axplons.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\explorku.job	25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368.bin.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 8 IoCs

pid	Process
3788	amers.exe
3788	amers.exe
4352	axplons.exe
4352	axplons.exe
648	axplons.exe
648	axplons.exe
2492	axplons.exe
2492	axplons.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4436 wrote to memory of 1336	4436	25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368.bin.exe	86
PID 4436 wrote to memory of 1336	4436	25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368.bin.exe	86
PID 4436 wrote to memory of 1336	4436	25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368.bin.exe	86
PID 1336 wrote to memory of 5004	1336	explorku.exe	94
PID 1336 wrote to memory of 5004	1336	explorku.exe	94
PID 1336 wrote to memory of 5004	1336	explorku.exe	94
PID 1336 wrote to memory of 3788	1336	explorku.exe	96
PID 1336 wrote to memory of 3788	1336	explorku.exe	96
PID 1336 wrote to memory of 3788	1336	explorku.exe	96
PID 3788 wrote to memory of 4352	3788	amers.exe	100
PID 3788 wrote to memory of 4352	3788	amers.exe	100
PID 3788 wrote to memory of 4352	3788	amers.exe	100
PID 1336 wrote to memory of 4800	1336	explorku.exe	101
PID 1336 wrote to memory of 4800	1336	explorku.exe	101
PID 1336 wrote to memory of 4800	1336	explorku.exe	101

C:\Users\Admin\AppData\Local\Temp\25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368.bin.exe
"C:\Users\Admin\AppData\Local\Temp\25cc387245bf79b1a64e007728a619224066d935278d0ff7905af41703210368.bin.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:4436
- 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 WriteProcessMemory
  PID:1336
- - C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
    "C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe"
    3⤵
    PID:5004
- - C:\Users\Admin\AppData\Local\Temp\1000013001\amers.exe
    "C:\Users\Admin\AppData\Local\Temp\1000013001\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:3788
  - - 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:4352
- - C:\Users\Admin\AppData\Local\Temp\1000014001\16e77deb04.exe
    "C:\Users\Admin\AppData\Local\Temp\1000014001\16e77deb04.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:4800

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:648

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:648

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:3788

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:3700

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:2492

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