agenttesla | 8babb9a5318d0b2fa43d6c18e91a23a70de547243db91f866e50bb2ff1b7db8b

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	SpyderCrypter.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	SpyderCrypter.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	SpyderCrypter.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	SpyderResources.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	SpyderCrypter.exe

Executes dropped EXE 1 IoCs

pid	Process
3840	SpyderResources.exe

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/2616-10-0x0000000000F70000-0x000000000197C000-memory.dmp	themida
behavioral2/memory/2616-11-0x0000000000F70000-0x000000000197C000-memory.dmp	themida

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	SpyderCrypter.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
9	raw.githubusercontent.com
10	raw.githubusercontent.com
16	raw.githubusercontent.com

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
2700	3840	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 10 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	SpyderCrypter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SpyderResources.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ComputerDefaults.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	SpyderCrypter.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	SpyderCrypter.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion	SpyderCrypter.exe

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\ms-settings\shell	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\ms-settings\shell\open	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\ms-settings\shell\open\command\ = "wscript.exe C:\\Users\\Admin\\AppData\\Local\\Temp\\jackpear63605335.vbs"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\ms-settings\shell\open\command	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\ms-settings\shell\open\command\DelegateExecute = "0"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\ms-settings\shell\open\command	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000_Classes\ms-settings	reg.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

pid	Process
2680	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2616	SpyderCrypter.exe
Token: SeDebugPrivilege	3840	SpyderResources.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2616 wrote to memory of 3840	2616	SpyderCrypter.exe	86
PID 2616 wrote to memory of 3840	2616	SpyderCrypter.exe	86
PID 2616 wrote to memory of 3840	2616	SpyderCrypter.exe	86
PID 3840 wrote to memory of 4680	3840	SpyderResources.exe	91
PID 3840 wrote to memory of 4680	3840	SpyderResources.exe	91
PID 3840 wrote to memory of 4680	3840	SpyderResources.exe	91
PID 3840 wrote to memory of 2136	3840	SpyderResources.exe	93
PID 3840 wrote to memory of 2136	3840	SpyderResources.exe	93
PID 3840 wrote to memory of 2136	3840	SpyderResources.exe	93
PID 3840 wrote to memory of 4500	3840	SpyderResources.exe	95
PID 3840 wrote to memory of 4500	3840	SpyderResources.exe	95
PID 3840 wrote to memory of 4500	3840	SpyderResources.exe	95
PID 4500 wrote to memory of 2104	4500	cmd.exe	97
PID 4500 wrote to memory of 2104	4500	cmd.exe	97
PID 4500 wrote to memory of 2104	4500	cmd.exe	97
PID 2104 wrote to memory of 68	2104	ComputerDefaults.exe	98
PID 2104 wrote to memory of 68	2104	ComputerDefaults.exe	98
PID 2104 wrote to memory of 68	2104	ComputerDefaults.exe	98
PID 68 wrote to memory of 3880	68	wscript.exe	99
PID 68 wrote to memory of 3880	68	wscript.exe	99
PID 68 wrote to memory of 3880	68	wscript.exe	99
PID 3840 wrote to memory of 4716	3840	SpyderResources.exe	101
PID 3840 wrote to memory of 4716	3840	SpyderResources.exe	101
PID 3840 wrote to memory of 4716	3840	SpyderResources.exe	101
PID 4716 wrote to memory of 2680	4716	cmd.exe	103
PID 4716 wrote to memory of 2680	4716	cmd.exe	103
PID 4716 wrote to memory of 2680	4716	cmd.exe	103

C:\Users\Admin\AppData\Local\Temp\SpyderCrypter.exe
"C:\Users\Admin\AppData\Local\Temp\SpyderCrypter.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Users\Admin\AppData\Local\Temp\SpyderResources.exe
  "C:\Users\Admin\AppData\Local\Temp\SpyderResources.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3840
- - C:\Windows\SysWOW64\reg.exe
    "C:\Windows\system32\reg.exe" add "HKCU\Software\Classes\ms-settings\shell\open\command" /d "wscript.exe C:\Users\Admin\AppData\Local\Temp\jackpear63605335.vbs" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    PID:4680
- - C:\Windows\SysWOW64\reg.exe
    "C:\Windows\system32\reg.exe" add "HKCU\Software\Classes\ms-settings\shell\open\command" /v DelegateExecute /d "0" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    PID:2136
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C computerdefaults.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4500
  - - C:\Windows\SysWOW64\ComputerDefaults.exe
      computerdefaults.exe
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2104
    - - C:\Windows\SysWOW64\wscript.exe
        
        "wscript.exe" C:\Users\Admin\AppData\Local\Temp\jackpear63605335.vbs
        5⤵
        Checks computer location settings
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:68
      - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C del C:\Windows\System32\drivers\etc\hosts
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:3880
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C schtasks /Create /SC ONLOGON /TN BraveUpdateScheduler_QMyk9gHxWJYAojiqe050MX /TR "C:\Users\Admin\AppData\Local\Microsoft\Windows\Notifications\wpnidm\QMyk9gHxWJYAojiqe050MX.exe" /RL HIGHEST /IT
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4716
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Create /SC ONLOGON /TN BraveUpdateScheduler_QMyk9gHxWJYAojiqe050MX /TR "C:\Users\Admin\AppData\Local\Microsoft\Windows\Notifications\wpnidm\QMyk9gHxWJYAojiqe050MX.exe" /RL HIGHEST /IT
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2680
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3840 -s 2292
    3⤵
    - Program crash
    PID:2700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3840 -ip 3840
1⤵
PID:2128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

System Information Discovery