formbook | 3f84431741cecf17b3a9529c376d23e474c31e8de26bab5da4d688be6c7332cb

System Information Discovery

Processes:

contract supply list.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	contract supply list.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	contract supply list.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

Processes:

contract supply list.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	contract supply list.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

Processes:

contract supply list.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	contract supply list.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	contract supply list.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

contract supply list.execontract supply list.exewlanext.exe

description	pid	process	target process
PID 2352 set thread context of 3452	2352	contract supply list.exe	contract supply list.exe
PID 3452 set thread context of 2040	3452	contract supply list.exe	Explorer.EXE
PID 4204 set thread context of 2040	4204	wlanext.exe	Explorer.EXE

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

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
T1053

Processes:

schtasks.exe

pid process

5032 schtasks.exe

pid	process
5032	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

Processes:

contract supply list.execontract supply list.exewlanext.exe

pid	process
2352	contract supply list.exe
3452	contract supply list.exe
3452	contract supply list.exe
3452	contract supply list.exe
3452	contract supply list.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe
4204	wlanext.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

contract supply list.exewlanext.exe

pid process

3452 contract supply list.exe
3452 contract supply list.exe
3452 contract supply list.exe
4204 wlanext.exe
4204 wlanext.exe

pid	process
3452	contract supply list.exe
3452	contract supply list.exe
3452	contract supply list.exe
4204	wlanext.exe
4204	wlanext.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

contract supply list.execontract supply list.exewlanext.exe

description	pid	process
Token: SeDebugPrivilege	2352	contract supply list.exe
Token: SeDebugPrivilege	3452	contract supply list.exe
Token: SeDebugPrivilege	4204	wlanext.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

contract supply list.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 2352 wrote to memory of 5032	2352	contract supply list.exe	schtasks.exe
PID 2352 wrote to memory of 5032	2352	contract supply list.exe	schtasks.exe
PID 2352 wrote to memory of 5032	2352	contract supply list.exe	schtasks.exe
PID 2352 wrote to memory of 3452	2352	contract supply list.exe	contract supply list.exe
PID 2352 wrote to memory of 3452	2352	contract supply list.exe	contract supply list.exe
PID 2352 wrote to memory of 3452	2352	contract supply list.exe	contract supply list.exe
PID 2352 wrote to memory of 3452	2352	contract supply list.exe	contract supply list.exe
PID 2352 wrote to memory of 3452	2352	contract supply list.exe	contract supply list.exe
PID 2352 wrote to memory of 3452	2352	contract supply list.exe	contract supply list.exe
PID 2040 wrote to memory of 4204	2040	Explorer.EXE	wlanext.exe
PID 2040 wrote to memory of 4204	2040	Explorer.EXE	wlanext.exe
PID 2040 wrote to memory of 4204	2040	Explorer.EXE	wlanext.exe
PID 4204 wrote to memory of 2900	4204	wlanext.exe	cmd.exe
PID 4204 wrote to memory of 2900	4204	wlanext.exe	cmd.exe
PID 4204 wrote to memory of 2900	4204	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:2040

C:\Users\Admin\AppData\Local\Temp\contract supply list.exe
"C:\Users\Admin\AppData\Local\Temp\contract supply list.exe"
2⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2352

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RvBHdj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp431F.tmp"
3⤵
- Creates scheduled task(s)
PID:5032

C:\Users\Admin\AppData\Local\Temp\contract supply list.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3452

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4204

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\contract supply list.exe"
3⤵
PID:2900

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

5

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

4

Peripheral Device Discovery