amadey | 8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	20666b5d19.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	20666b5d19.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	20666b5d19.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	20666b5d19.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	20666b5d19.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	20666b5d19.exe

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 4 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplong.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	afecb0098a.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	20666b5d19.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 8 IoCs

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

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	20666b5d19.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	axplong.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	axplong.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	afecb0098a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	afecb0098a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	20666b5d19.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lbroker.vbs	Qtdedcpuf.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lbroker.vbs	Ixpla.exe

Executes dropped EXE 8 IoCs

pid	Process
2728	axplong.exe
2352	l4.exe
1428	l4.exe
1924	Qtdedcpuf.exe
2520	Ixpla.exe
3292	networkmanager.exe
4084	afecb0098a.exe
4160	20666b5d19.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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	20666b5d19.exe
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	axplong.exe
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	afecb0098a.exe

Loads dropped DLL 23 IoCs

pid	Process
1964	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe
1964	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe
2728	axplong.exe
2352	l4.exe
1428	l4.exe
2728	axplong.exe
2728	axplong.exe
2728	axplong.exe
2728	axplong.exe
2728	axplong.exe
2728	axplong.exe
2728	axplong.exe
2728	axplong.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
1708	WerFault.exe
4500	WerFault.exe
4500	WerFault.exe
4500	WerFault.exe
4500	WerFault.exe
4500	WerFault.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	20666b5d19.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	20666b5d19.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\afecb0098a.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1006198001\\afecb0098a.exe"	axplong.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\20666b5d19.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1006199001\\20666b5d19.exe"	axplong.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
1964	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe
2728	axplong.exe
4084	afecb0098a.exe
4160	20666b5d19.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x000500000001a49a-2462.dat	upx
behavioral1/memory/2728-2468-0x00000000069E0000-0x000000000715B000-memory.dmp	upx
behavioral1/memory/3292-2475-0x0000000001110000-0x000000000188B000-memory.dmp	upx
behavioral1/memory/3292-2477-0x0000000001110000-0x000000000188B000-memory.dmp	upx

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\axplong.job	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1708	1924	WerFault.exe	36
4500	2520	WerFault.exe	37

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Qtdedcpuf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Ixpla.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	afecb0098a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20666b5d19.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	axplong.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1964	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe
2728	axplong.exe
4084	afecb0098a.exe
4160	20666b5d19.exe
4160	20666b5d19.exe
4160	20666b5d19.exe
1924	Qtdedcpuf.exe
2520	Ixpla.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	Qtdedcpuf.exe
Token: SeDebugPrivilege	2520	Ixpla.exe
Token: SeDebugPrivilege	4160	20666b5d19.exe
Token: SeDebugPrivilege	1924	Qtdedcpuf.exe
Token: SeDebugPrivilege	2520	Ixpla.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1964	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 2728	1964	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe	30
PID 1964 wrote to memory of 2728	1964	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe	30
PID 1964 wrote to memory of 2728	1964	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe	30
PID 1964 wrote to memory of 2728	1964	8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe	30
PID 2728 wrote to memory of 2352	2728	axplong.exe	33
PID 2728 wrote to memory of 2352	2728	axplong.exe	33
PID 2728 wrote to memory of 2352	2728	axplong.exe	33
PID 2728 wrote to memory of 2352	2728	axplong.exe	33
PID 2352 wrote to memory of 1428	2352	l4.exe	35
PID 2352 wrote to memory of 1428	2352	l4.exe	35
PID 2352 wrote to memory of 1428	2352	l4.exe	35
PID 2728 wrote to memory of 1924	2728	axplong.exe	36
PID 2728 wrote to memory of 1924	2728	axplong.exe	36
PID 2728 wrote to memory of 1924	2728	axplong.exe	36
PID 2728 wrote to memory of 1924	2728	axplong.exe	36
PID 2728 wrote to memory of 2520	2728	axplong.exe	37
PID 2728 wrote to memory of 2520	2728	axplong.exe	37
PID 2728 wrote to memory of 2520	2728	axplong.exe	37
PID 2728 wrote to memory of 2520	2728	axplong.exe	37
PID 2728 wrote to memory of 3292	2728	axplong.exe	38
PID 2728 wrote to memory of 3292	2728	axplong.exe	38
PID 2728 wrote to memory of 3292	2728	axplong.exe	38
PID 2728 wrote to memory of 3292	2728	axplong.exe	38
PID 2728 wrote to memory of 4084	2728	axplong.exe	39
PID 2728 wrote to memory of 4084	2728	axplong.exe	39
PID 2728 wrote to memory of 4084	2728	axplong.exe	39
PID 2728 wrote to memory of 4084	2728	axplong.exe	39
PID 2728 wrote to memory of 4160	2728	axplong.exe	40
PID 2728 wrote to memory of 4160	2728	axplong.exe	40
PID 2728 wrote to memory of 4160	2728	axplong.exe	40
PID 2728 wrote to memory of 4160	2728	axplong.exe	40
PID 1924 wrote to memory of 1708	1924	Qtdedcpuf.exe	41
PID 1924 wrote to memory of 1708	1924	Qtdedcpuf.exe	41
PID 1924 wrote to memory of 1708	1924	Qtdedcpuf.exe	41
PID 1924 wrote to memory of 1708	1924	Qtdedcpuf.exe	41
PID 2520 wrote to memory of 4500	2520	Ixpla.exe	42
PID 2520 wrote to memory of 4500	2520	Ixpla.exe	42
PID 2520 wrote to memory of 4500	2520	Ixpla.exe	42
PID 2520 wrote to memory of 4500	2520	Ixpla.exe	42

C:\Users\Admin\AppData\Local\Temp\8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe
"C:\Users\Admin\AppData\Local\Temp\8c2b50cbbb58c0277697e4c82994fc810a882722cd83ef7b701b975959e5123a.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Users\Admin\AppData\Local\Temp\44111dbc49\axplong.exe
  "C:\Users\Admin\AppData\Local\Temp\44111dbc49\axplong.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2728
- - C:\Users\Admin\AppData\Local\Temp\1006029001\l4.exe
    "C:\Users\Admin\AppData\Local\Temp\1006029001\l4.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2352
  - - C:\Users\Admin\AppData\Local\Temp\onefile_2352_133784750976220000\l4.exe
      C:\Users\Admin\AppData\Local\Temp\1006029001\l4.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1428
- - C:\Users\Admin\AppData\Local\Temp\1006032001\Qtdedcpuf.exe
    "C:\Users\Admin\AppData\Local\Temp\1006032001\Qtdedcpuf.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1924
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1924 -s 632
      4⤵
      Loads dropped DLL
      Program crash
      PID:1708
- - C:\Users\Admin\AppData\Local\Temp\1006092001\Ixpla.exe
    "C:\Users\Admin\AppData\Local\Temp\1006092001\Ixpla.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2520
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 632
      4⤵
      Loads dropped DLL
      Program crash
      PID:4500
- - C:\Users\Admin\AppData\Local\Temp\1006141001\networkmanager.exe
    "C:\Users\Admin\AppData\Local\Temp\1006141001\networkmanager.exe"
    3⤵
    - Executes dropped EXE
    PID:3292
- - C:\Users\Admin\AppData\Local\Temp\1006198001\afecb0098a.exe
    "C:\Users\Admin\AppData\Local\Temp\1006198001\afecb0098a.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
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:4084
- - C:\Users\Admin\AppData\Local\Temp\1006199001\20666b5d19.exe
    "C:\Users\Admin\AppData\Local\Temp\1006199001\20666b5d19.exe"
    3⤵
    - Modifies Windows Defender Real-time Protection settings
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Windows security modification
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4160

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion