xworm | 1a5c3e7ee2b9577f64e6f8230872945814dc4eba01b11d175909c37fabe931ca

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 5 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-1-5-21-42486406-2033776002-1658862356-1000\Control Panel\International\Geo\Nation	Viurs ByDRX1 ALHB Group.exe
Key value queried	\REGISTRY\USER\S-1-5-21-42486406-2033776002-1658862356-1000\Control Panel\International\Geo\Nation	Virus.exe
Key value queried	\REGISTRY\USER\S-1-5-21-42486406-2033776002-1658862356-1000\Control Panel\International\Geo\Nation	Naيببشمي.exe
Key value queried	\REGISTRY\USER\S-1-5-21-42486406-2033776002-1658862356-1000\Control Panel\International\Geo\Nation	XClient.exe
Key value queried	\REGISTRY\USER\S-1-5-21-42486406-2033776002-1658862356-1000\Control Panel\International\Geo\Nation	ithckf.exe

Executes dropped EXE 6 IoCs

pid	Process
3340	ithckf.exe
1340	Naيببشمي.exe
1700	Viurs ByDRX1 ALHB Group.exe
4084	Virus.exe
4672	Viurs DRX1.exe
2528	Virus REvi DRX1.exe

Loads dropped DLL 1 IoCs

pid	Process
4084	Virus.exe

Modifies system executable filetype association 2 TTPs 16 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shellex\{8895b1c6-b41f-4c1c-a562-0d564250836f}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shellex\DropHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\print	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\runas	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\runasuser\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shellex\ContextMenuHandlers\Compatibility	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\DefaultIcon	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\edit\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\open\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\edit	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\print\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\runas\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shell\runasuser	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\shellex\ContextMenuHandlers	reg.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
416	2140	WerFault.exe	93

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\.docx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.m4v	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CID\fe32b045-d012-4eaa-8342-bd5329a41f2d\Host	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.MOD	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.pnf	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AcroExch.Document.DC\shell	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Applications\wordpad.exe	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.h\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.hlp	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.shtm	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-42486406-2033776002-1658862356-1000_Classes\AppX5c55tbqy8hgeyk21tx5ewf1mq82vg7jg\Application	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.lnk\ShellEx\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.mov\ShellEx\{BB2E617C-0920-11D1-9A0B-00C04FC2D6C1}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.xfdf\AcroExch.XFDFDoc\ShellNew	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AcroExch.pdfxml.1\shell\Printto\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AppUserModelId\Microsoft.Windows.ControlPanel	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-42486406-2033776002-1658862356-1000_Classes\AppXtkjk7ve8gcvsz7s2y4kkf56wrmb5edr7\Shell	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.blg	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.hxc	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.xlw	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Application.Manifest\shell\open\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\batfile\DefaultIcon	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CABFolder	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CERFile\shell\add\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.ADTS	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.pmc	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-42486406-2033776002-1658862356-1000_Classes\7-Zip.bzip2\shell\open	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Applications\AcroRD32.exe\shell\Read\command	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.evt	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.vbproj\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.vqf	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Applications\runtimebroker.exe	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-42486406-2033776002-1658862356-1000_Classes\AppX9kvz3rdv8t7twanaezbwfcdgrbg3bck0\Application	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CID\d389edc5-8648-4880-9e35-012badde0af5	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CID.Local\fe32b045-d012-4eaa-8342-bd5329a41f2d\Clsid	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.3gpp\ShellEx\{BB2E617C-0920-11D1-9A0B-00C04FC2D6C1}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.avif	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.vdw\shellex\{8895b1c6-b41f-4c1c-a562-0d564250836f}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CID.Local\d389edc5-8648-4880-9e35-012badde0af5\Protocol	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.dctx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.mp2\OpenWithProgIds	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-42486406-2033776002-1658862356-1000_Classes\ActivatableClasses\Package\F46D4000-FD22-4DB4-AC8E-4E1DDDE828FE_10.0.19041.4239_neutral_neutral_cw5n1h2txyewy	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CertificateAuthority.Request\CurVer	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CATFile	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.bkf\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.theme	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\ACLFile\DefaultIcon	reg.exe
Key deleted	\REGISTRY\USER\S-1-5-21-42486406-2033776002-1658862356-1000_Classes\AppXw3nvmqt363p060ea53qg33er1a0782a8\DefaultIcon	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.bmp\OpenWithList	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.hxs	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.M2V\ShellEx\{BB2E617C-0920-11D1-9A0B-00C04FC2D6C1}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.mpeg4	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.pot\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{BBAA0E44-3862-490C-8E63-AC2D2D6EF733}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.fnd	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.rgs\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.xltx\ShellEx\{8895b1c6-b41f-4c1c-a562-0d564250836f}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.ogv\ShellEx	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.xld	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\acrobat2018\DefaultIcon	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CCWU.ComCallWrapper\CurVer	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\.bin\PersistentHandler	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\chkfile	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\CID.Local\db6a90c7-a1a8-4ab4-af7c-4d218f19ffb1\Endpoint	reg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3652	XClient.exe
Token: SeDebugPrivilege	2528	Virus REvi DRX1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3652 wrote to memory of 3340	3652	XClient.exe	83
PID 3340 wrote to memory of 1340	3340	ithckf.exe	84
PID 3340 wrote to memory of 1700	3340	ithckf.exe	85
PID 3340 wrote to memory of 4084	3340	ithckf.exe	86
PID 1700 wrote to memory of 4672	1700	Viurs ByDRX1 ALHB Group.exe	88
PID 4084 wrote to memory of 2528	4084	Virus.exe	89
PID 1340 wrote to memory of 1224	1340	Naيببشمي.exe	90
PID 1224 wrote to memory of 3888	1224	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Users\Admin\AppData\Local\Temp\ithckf.exe
  "C:\Users\Admin\AppData\Local\Temp\ithckf.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3340
- - C:\Users\Admin\AppData\Roaming\Naيببشمي.exe
    "C:\Users\Admin\AppData\Roaming\Naيببشمي.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1340
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /k reg delete HKCR /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1224
    - - C:\Windows\system32\reg.exe
        
        reg delete HKCR /f
        5⤵
        Modifies system executable filetype association
        Modifies registry class
        
        PID:3888
- - C:\Users\Admin\AppData\Roaming\Viurs ByDRX1 ALHB Group.exe
    "C:\Users\Admin\AppData\Roaming\Viurs ByDRX1 ALHB Group.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1700
  - - C:\Users\Admin\AppData\Local\Temp\Viurs DRX1.exe
      "C:\Users\Admin\AppData\Local\Temp\Viurs DRX1.exe"
      4⤵
      Executes dropped EXE
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      PID:4672
- - C:\Users\Admin\AppData\Roaming\Virus.exe
    "C:\Users\Admin\AppData\Roaming\Virus.exe"
    3⤵
    - 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:4084
  - - C:\Users\Admin\AppData\Local\Temp\Virus REvi DRX1.exe
      "C:\Users\Admin\AppData\Local\Temp\Virus REvi DRX1.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:2528
    - - C:\Users\Admin\AppData\Local\Temp\Virus REvi DRX1.exe
        
        "C:\Users\Admin\AppData\Local\Temp\Virus REvi DRX1.exe"
        5⤵
        
        PID:2140
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 1384
        6⤵
        Program crash
        
        PID:416

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4d8 0x3a8
1⤵
PID:1960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 2140 -ip 2140
1⤵
PID:940

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Modify Registry

T1112

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