xworm | 4e2b6ba1d497e94c32d71d48df0082fe95c97ce3ad20f2e1ebca82af86d11bee

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1100	powershell.exe
5064	powershell.exe
2716	powershell.exe
2352	powershell.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	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cmd.lnk	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cmd.lnk	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe

Themida packer 1 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/1636-9-0x00000000000C0000-0x0000000000524000-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-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cmd = "C:\\ProgramData\\cmd.exe"	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

pid	Process
1952	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe
1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe
2352	powershell.exe
2352	powershell.exe
1100	powershell.exe
1100	powershell.exe
5064	powershell.exe
5064	powershell.exe
2716	powershell.exe
2716	powershell.exe
1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe
Token: SeDebugPrivilege	2352	powershell.exe
Token: SeDebugPrivilege	1100	powershell.exe
Token: SeDebugPrivilege	5064	powershell.exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 2352	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	89
PID 1636 wrote to memory of 2352	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	89
PID 1636 wrote to memory of 2352	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	89
PID 1636 wrote to memory of 1100	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	92
PID 1636 wrote to memory of 1100	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	92
PID 1636 wrote to memory of 1100	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	92
PID 1636 wrote to memory of 5064	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	96
PID 1636 wrote to memory of 5064	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	96
PID 1636 wrote to memory of 5064	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	96
PID 1636 wrote to memory of 2716	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	98
PID 1636 wrote to memory of 2716	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	98
PID 1636 wrote to memory of 2716	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	98
PID 1636 wrote to memory of 1952	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	100
PID 1636 wrote to memory of 1952	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	100
PID 1636 wrote to memory of 1952	1636	c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe	100

C:\Users\Admin\AppData\Local\Temp\c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe
"C:\Users\Admin\AppData\Local\Temp\c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2352
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'c8edbc2a072ac9e68a46868aeb7c996aa5d1fe5f8afb3d8ff15b1be4cb3a52a1.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1100
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\cmd.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5064
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'cmd.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2716
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "cmd" /tr "C:\ProgramData\cmd.exe"
  2⤵
  - Creates scheduled task(s)
  PID:1952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

System Information Discovery