amadey | a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b

Virtualization/Sandbox Evasion

description	ioc	Process
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__	a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	amers.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplons.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	9b698c7a14.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

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	axplons.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\VideoBiosVersion	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	axplons.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	9b698c7a14.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	9b698c7a14.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	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\SystemBiosVersion	explorku.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b.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\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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	explorku.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	amers.exe

Executes dropped EXE 10 IoCs

pid	Process
1512	explorku.exe
1988	explorku.exe
4552	amers.exe
1352	axplons.exe
1504	9b698c7a14.exe
4888	installer.exe
4744	axplons.exe
3700	explorku.exe
4132	axplons.exe
4744	explorku.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-1-5-21-3906287020-2915474608-1755617787-1000\Software\Wine	axplons.exe
Key opened	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Software\Wine	amers.exe
Key opened	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Software\Wine	axplons.exe
Key opened	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Software\Wine	axplons.exe

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

Themida packer 51 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/3652-0-0x0000000000C90000-0x00000000011CE000-memory.dmp	themida
behavioral1/memory/3652-1-0x0000000000C90000-0x00000000011CE000-memory.dmp	themida
behavioral1/memory/3652-3-0x0000000000C90000-0x00000000011CE000-memory.dmp	themida
behavioral1/memory/3652-6-0x0000000000C90000-0x00000000011CE000-memory.dmp	themida
behavioral1/memory/3652-7-0x0000000000C90000-0x00000000011CE000-memory.dmp	themida
behavioral1/memory/3652-8-0x0000000000C90000-0x00000000011CE000-memory.dmp	themida
behavioral1/memory/3652-4-0x0000000000C90000-0x00000000011CE000-memory.dmp	themida
behavioral1/memory/3652-5-0x0000000000C90000-0x00000000011CE000-memory.dmp	themida
behavioral1/memory/3652-2-0x0000000000C90000-0x00000000011CE000-memory.dmp	themida
behavioral1/files/0x000d00000002338b-14.dat	themida
behavioral1/memory/1512-21-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1512-23-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/3652-20-0x0000000000C90000-0x00000000011CE000-memory.dmp	themida
behavioral1/memory/1512-24-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1512-27-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1512-28-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1512-26-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1512-30-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1512-29-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1512-25-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1988-32-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1988-33-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1988-34-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1988-35-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1988-38-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1988-39-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1988-37-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1988-36-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1988-41-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/files/0x000c000000023396-78.dat	themida
behavioral1/memory/1504-92-0x0000000000BC0000-0x0000000001256000-memory.dmp	themida
behavioral1/memory/1504-94-0x0000000000BC0000-0x0000000001256000-memory.dmp	themida
behavioral1/memory/1504-97-0x0000000000BC0000-0x0000000001256000-memory.dmp	themida
behavioral1/memory/1504-99-0x0000000000BC0000-0x0000000001256000-memory.dmp	themida
behavioral1/memory/1504-100-0x0000000000BC0000-0x0000000001256000-memory.dmp	themida
behavioral1/memory/1504-98-0x0000000000BC0000-0x0000000001256000-memory.dmp	themida
behavioral1/memory/1504-96-0x0000000000BC0000-0x0000000001256000-memory.dmp	themida
behavioral1/memory/1504-95-0x0000000000BC0000-0x0000000001256000-memory.dmp	themida
behavioral1/memory/1504-93-0x0000000000BC0000-0x0000000001256000-memory.dmp	themida
behavioral1/memory/1512-133-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/1504-137-0x0000000000BC0000-0x0000000001256000-memory.dmp	themida
behavioral1/memory/3700-252-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/3700-254-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/3700-251-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/3700-250-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/3700-255-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/3700-253-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/3700-256-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/3700-258-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/4744-287-0x0000000000750000-0x0000000000C8E000-memory.dmp	themida
behavioral1/memory/4744-293-0x0000000000750000-0x0000000000C8E000-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-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\9b698c7a14.exe = "C:\\Users\\Admin\\1000006002\\9b698c7a14.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	9b698c7a14.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	a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b.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

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
29	ip-api.com

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
4552	amers.exe
1352	axplons.exe
4744	axplons.exe
4132	axplons.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\axplons.job	amers.exe
File created	C:\Windows\Tasks\explorku.job	a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4552	amers.exe
4552	amers.exe
1352	axplons.exe
1352	axplons.exe
4888	installer.exe
4888	installer.exe
4888	installer.exe
4744	axplons.exe
4744	axplons.exe
4888	installer.exe
4132	axplons.exe
4132	axplons.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4888	installer.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3652 wrote to memory of 1512	3652	a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b.exe	85
PID 3652 wrote to memory of 1512	3652	a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b.exe	85
PID 3652 wrote to memory of 1512	3652	a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b.exe	85
PID 1512 wrote to memory of 2320	1512	explorku.exe	94
PID 1512 wrote to memory of 2320	1512	explorku.exe	94
PID 1512 wrote to memory of 2320	1512	explorku.exe	94
PID 1512 wrote to memory of 4552	1512	explorku.exe	96
PID 1512 wrote to memory of 4552	1512	explorku.exe	96
PID 1512 wrote to memory of 4552	1512	explorku.exe	96
PID 4552 wrote to memory of 1352	4552	amers.exe	97
PID 4552 wrote to memory of 1352	4552	amers.exe	97
PID 4552 wrote to memory of 1352	4552	amers.exe	97
PID 1512 wrote to memory of 1504	1512	explorku.exe	100
PID 1512 wrote to memory of 1504	1512	explorku.exe	100
PID 1512 wrote to memory of 1504	1512	explorku.exe	100
PID 1512 wrote to memory of 4888	1512	explorku.exe	101
PID 1512 wrote to memory of 4888	1512	explorku.exe	101

C:\Users\Admin\AppData\Local\Temp\a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b.exe
"C:\Users\Admin\AppData\Local\Temp\a91f71fda1d765da071a33e60008cd9c999ab652acf8e44734942a3ed52d0b1b.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:3652
- 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:1512
- - C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe
    "C:\Users\Admin\AppData\Local\Temp\908f070dff\explorku.exe"
    3⤵
    PID:2320
- - 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:4552
  - - 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:1352
- - C:\Users\Admin\1000006002\9b698c7a14.exe
    "C:\Users\Admin\1000006002\9b698c7a14.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:1504
- - C:\Users\Admin\AppData\Local\Temp\1000012001\installer.exe
    "C:\Users\Admin\AppData\Local\Temp\1000012001\installer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4888

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:1988

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:4744

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:4132

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:4744

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion