amadey | 4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062

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	6dfe352cad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	6dfe352cad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	6dfe352cad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	6dfe352cad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	6dfe352cad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	6dfe352cad.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__	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplong.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	e4174b8c0b.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	6dfe352cad.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	axplong.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	e4174b8c0b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	e4174b8c0b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	6dfe352cad.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	6dfe352cad.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	axplong.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 9 IoCs

pid	Process
2880	axplong.exe
1536	chrome11.exe
1444	l4.exe
2060	l4.exe
1700	Qtdedcpuf.exe
5064	Ixpla.exe
4968	networkmanager.exe
1752	e4174b8c0b.exe
3052	6dfe352cad.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	axplong.exe
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	e4174b8c0b.exe
Key opened	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine	6dfe352cad.exe

Loads dropped DLL 24 IoCs

pid	Process
2600	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe
2600	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe
2880	axplong.exe
2880	axplong.exe
1444	l4.exe
2060	l4.exe
2880	axplong.exe
2880	axplong.exe
2880	axplong.exe
2880	axplong.exe
2880	axplong.exe
2880	axplong.exe
2880	axplong.exe
2880	axplong.exe
4120	WerFault.exe
4120	WerFault.exe
4120	WerFault.exe
4120	WerFault.exe
4120	WerFault.exe
860	WerFault.exe
860	WerFault.exe
860	WerFault.exe
860	WerFault.exe
860	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	6dfe352cad.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	6dfe352cad.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\e4174b8c0b.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1006192001\\e4174b8c0b.exe"	axplong.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\6dfe352cad.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1006193001\\6dfe352cad.exe"	axplong.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
2600	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe
2880	axplong.exe
1752	e4174b8c0b.exe
3052	6dfe352cad.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000600000001a4a0-2510.dat	upx
behavioral1/memory/4968-2523-0x0000000000010000-0x000000000078B000-memory.dmp	upx
behavioral1/memory/2880-2522-0x0000000006960000-0x00000000070DB000-memory.dmp	upx
behavioral1/memory/4968-2526-0x0000000000010000-0x000000000078B000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome.exe	chrome11.exe
File created	C:\Program Files\Google\Chrome\Application\chrome.exe	chrome11.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\axplong.job	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.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
4120	1700	WerFault.exe	42
860	5064	WerFault.exe	44

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	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	axplong.exe
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	e4174b8c0b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6dfe352cad.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2600	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe
2880	axplong.exe
1536	chrome11.exe
1752	e4174b8c0b.exe
3052	6dfe352cad.exe
3052	6dfe352cad.exe
3052	6dfe352cad.exe
1700	Qtdedcpuf.exe
5064	Ixpla.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1536	chrome11.exe
Token: SeDebugPrivilege	1700	Qtdedcpuf.exe
Token: SeDebugPrivilege	5064	Ixpla.exe
Token: SeDebugPrivilege	3052	6dfe352cad.exe
Token: SeDebugPrivilege	1700	Qtdedcpuf.exe
Token: SeDebugPrivilege	5064	Ixpla.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2600	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 2880	2600	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe	30
PID 2600 wrote to memory of 2880	2600	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe	30
PID 2600 wrote to memory of 2880	2600	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe	30
PID 2600 wrote to memory of 2880	2600	4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe	30
PID 2880 wrote to memory of 1536	2880	axplong.exe	32
PID 2880 wrote to memory of 1536	2880	axplong.exe	32
PID 2880 wrote to memory of 1536	2880	axplong.exe	32
PID 2880 wrote to memory of 1536	2880	axplong.exe	32
PID 2880 wrote to memory of 1444	2880	axplong.exe	35
PID 2880 wrote to memory of 1444	2880	axplong.exe	35
PID 2880 wrote to memory of 1444	2880	axplong.exe	35
PID 2880 wrote to memory of 1444	2880	axplong.exe	35
PID 1444 wrote to memory of 2060	1444	l4.exe	37
PID 1444 wrote to memory of 2060	1444	l4.exe	37
PID 1444 wrote to memory of 2060	1444	l4.exe	37
PID 1536 wrote to memory of 2348	1536	chrome11.exe	38
PID 1536 wrote to memory of 2348	1536	chrome11.exe	38
PID 1536 wrote to memory of 2348	1536	chrome11.exe	38
PID 2880 wrote to memory of 1700	2880	axplong.exe	42
PID 2880 wrote to memory of 1700	2880	axplong.exe	42
PID 2880 wrote to memory of 1700	2880	axplong.exe	42
PID 2880 wrote to memory of 1700	2880	axplong.exe	42
PID 2880 wrote to memory of 5064	2880	axplong.exe	44
PID 2880 wrote to memory of 5064	2880	axplong.exe	44
PID 2880 wrote to memory of 5064	2880	axplong.exe	44
PID 2880 wrote to memory of 5064	2880	axplong.exe	44
PID 2880 wrote to memory of 4968	2880	axplong.exe	45
PID 2880 wrote to memory of 4968	2880	axplong.exe	45
PID 2880 wrote to memory of 4968	2880	axplong.exe	45
PID 2880 wrote to memory of 4968	2880	axplong.exe	45
PID 2880 wrote to memory of 1752	2880	axplong.exe	46
PID 2880 wrote to memory of 1752	2880	axplong.exe	46
PID 2880 wrote to memory of 1752	2880	axplong.exe	46
PID 2880 wrote to memory of 1752	2880	axplong.exe	46
PID 2880 wrote to memory of 3052	2880	axplong.exe	47
PID 2880 wrote to memory of 3052	2880	axplong.exe	47
PID 2880 wrote to memory of 3052	2880	axplong.exe	47
PID 2880 wrote to memory of 3052	2880	axplong.exe	47
PID 1700 wrote to memory of 4120	1700	Qtdedcpuf.exe	48
PID 1700 wrote to memory of 4120	1700	Qtdedcpuf.exe	48
PID 1700 wrote to memory of 4120	1700	Qtdedcpuf.exe	48
PID 1700 wrote to memory of 4120	1700	Qtdedcpuf.exe	48
PID 5064 wrote to memory of 860	5064	Ixpla.exe	49
PID 5064 wrote to memory of 860	5064	Ixpla.exe	49
PID 5064 wrote to memory of 860	5064	Ixpla.exe	49
PID 5064 wrote to memory of 860	5064	Ixpla.exe	49

C:\Users\Admin\AppData\Local\Temp\4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.exe
"C:\Users\Admin\AppData\Local\Temp\4578d207fc6610750df1d6005c8e1ba3c00bdf9b89d8ac6d49bb4e6904729062.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:2600
- 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:2880
- - C:\Users\Admin\AppData\Local\Temp\1005970001\chrome11.exe
    "C:\Users\Admin\AppData\Local\Temp\1005970001\chrome11.exe"
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1536
  - - C:\Windows\System32\certutil.exe
      "C:\Windows\System32\certutil.exe" -silent -importPFX -p "" -f "C:\Users\Admin\AppData\Local\Temp\tmpD4DE.tmp"
      4⤵
      PID:2348
- - 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:1444
  - - C:\Users\Admin\AppData\Local\Temp\onefile_1444_133784711469740000\l4.exe
      C:\Users\Admin\AppData\Local\Temp\1006029001\l4.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:2060
- - 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:1700
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 632
      4⤵
      Loads dropped DLL
      Program crash
      PID:4120
- - 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:5064
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5064 -s 632
      4⤵
      Loads dropped DLL
      Program crash
      PID:860
- - C:\Users\Admin\AppData\Local\Temp\1006141001\networkmanager.exe
    "C:\Users\Admin\AppData\Local\Temp\1006141001\networkmanager.exe"
    3⤵
    - Executes dropped EXE
    PID:4968
- - C:\Users\Admin\AppData\Local\Temp\1006192001\e4174b8c0b.exe
    "C:\Users\Admin\AppData\Local\Temp\1006192001\e4174b8c0b.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:1752
- - C:\Users\Admin\AppData\Local\Temp\1006193001\6dfe352cad.exe
    "C:\Users\Admin\AppData\Local\Temp\1006193001\6dfe352cad.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:3052

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