ae837e22582519086fa5634dc351ee0cf76df56b726dc2da507c9902c9baeaaa

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	Virus.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

defense_evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools	Virus.exe

Checks BIOS information in registry 2 TTPs 2 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	Virus.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Virus.exe

Checks computer location settings 2 TTPs 4 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-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	Virus NahSmi.exe
Key value queried	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	Viurs ByDRX1 ALHB Group.exe
Key value queried	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	Virus.exe
Key value queried	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	Naيببشمي.exe

Executes dropped EXE 5 IoCs

pid	Process
3848	Naيببشمي.exe
1776	Viurs ByDRX1 ALHB Group.exe
1536	Virus.exe
3896	Viurs DRX1.exe
448	Virus REvi DRX1.exe

Loads dropped DLL 1 IoCs

pid	Process
1536	Virus.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Virus.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Virus.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	Viurs DRX1.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3308	3648	WerFault.exe	100

System Location Discovery: System Language Discovery 1 TTPs 2 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	Viurs DRX1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Virus REvi DRX1.exe

Modifies registry class 64 IoCs

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.cpp\PersistentHandler	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\.aac\OpenWithProgids	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.aifc\OpenWithProgIds	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.appcontent-ms\shellex	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.bkf	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\.amr\OpenWithProgids	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.appref-ms	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.bay\ShellEx\{e357fccd-a995-4576-b01f-234630154e96}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.com\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.arw\ShellEx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.aw	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.cod\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.cpl	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.chm	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.cls	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\.3fr\OpenWithProgids	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.3fr\ShellEx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.3mf\shellex\{8895b1c6-b41f-4c1c-a562-0d564250836f}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.3mf\shellex	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\.3mf	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.aiff	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.application	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.3ga	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.ani	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.api\OpenWithProgids	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\.appx\OpenWithProgids	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.avi\ShellEx\{BB2E617C-0920-11D1-9A0B-00C04FC2D6C1}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.cod	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.cc\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.cgm\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.arw\ShellEx\{e357fccd-a995-4576-b01f-234630154e96}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.asf\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.cdxml	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\.3mf\OpenWithProgids	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.api	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\.appxbundle\OpenWithProgids	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\.avi	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.crl	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\*\OpenWithList\Winword.exe	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\PropertySheetHandlers\{1f2e5c40-9550-11ce-99d2-00aa006e086c}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.3g2\ShellEx\{BB2E617C-0920-11D1-9A0B-00C04FC2D6C1}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.3gpp\ShellEx\{BB2E617C-0920-11D1-9A0B-00C04FC2D6C1}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.asx\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\UpdateEncryptionSettingsWork\Shell	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\.3g2\OpenWithProgids	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.cmd	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\.cr2	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\removeproperties	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.cap\ShellEx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\7-Zip	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.bz2	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\*\OpenWithList\MSPaint.exe	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shell\UpdateEncryptionSettingsWork\Shell\Decrypt\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.bay\ShellEx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.bmp\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.accdt\ShellEx\PropertyHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.aps	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.bik	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\*\shellex\ContextMenuHandlers\ FileSyncEx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.api\AcroExch.Plugin\ShellNew	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000_Classes\.appxbundle	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.au\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.b4s	reg.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	448	Virus REvi DRX1.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 3848	4740	Virus NahSmi.exe	86
PID 4740 wrote to memory of 1776	4740	Virus NahSmi.exe	87
PID 4740 wrote to memory of 1536	4740	Virus NahSmi.exe	88
PID 1776 wrote to memory of 3896	1776	Viurs ByDRX1 ALHB Group.exe	89
PID 1536 wrote to memory of 448	1536	Virus.exe	92
PID 3848 wrote to memory of 3444	3848	Naيببشمي.exe	93
PID 3444 wrote to memory of 4580	3444	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\Virus NahSmi.exe
"C:\Users\Admin\AppData\Local\Temp\Virus NahSmi.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Users\Admin\AppData\Roaming\Naيببشمي.exe
  "C:\Users\Admin\AppData\Roaming\Naيببشمي.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3848
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /k reg delete HKCR /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3444
  - - C:\Windows\system32\reg.exe
      reg delete HKCR /f
      4⤵
      Modifies registry class
      PID:4580
- C:\Users\Admin\AppData\Roaming\Viurs ByDRX1 ALHB Group.exe
  "C:\Users\Admin\AppData\Roaming\Viurs ByDRX1 ALHB Group.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1776
- - C:\Users\Admin\AppData\Local\Temp\Viurs DRX1.exe
    "C:\Users\Admin\AppData\Local\Temp\Viurs DRX1.exe"
    3⤵
    - Executes dropped EXE
    - Writes to the Master Boot Record (MBR)
    - System Location Discovery: System Language Discovery
    PID:3896
- C:\Users\Admin\AppData\Roaming\Virus.exe
  "C:\Users\Admin\AppData\Roaming\Virus.exe"
  2⤵
  - Looks for VirtualBox Guest Additions in registry
  - Looks for VMWare Tools registry key
  - Checks BIOS information in registry
  - Checks computer location settings
  - Executes dropped EXE
  - Loads dropped DLL
  - Maps connected drives based on registry
  - Suspicious use of WriteProcessMemory
  PID:1536
- - C:\Users\Admin\AppData\Local\Temp\Virus REvi DRX1.exe
    "C:\Users\Admin\AppData\Local\Temp\Virus REvi DRX1.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:448
  - - C:\Users\Admin\AppData\Local\Temp\Virus REvi DRX1.exe
      "C:\Users\Admin\AppData\Local\Temp\Virus REvi DRX1.exe"
      4⤵
      PID:3648
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3648 -s 1324
        5⤵
        Program crash
        
        PID:3308

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x38c 0x464
1⤵
PID:2360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3648 -ip 3648
1⤵
PID:4840

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion