92c691d8e8157dc95310628e644d4e98a734ab5aa1f7e22644d256eb463c7d1c

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Setup.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	Setup.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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	MicrosoftToolkit.exe

Executes dropped EXE 1 IoCs

pid	Process
4044	Setup.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000700000002342a-9.dat	upx
behavioral2/memory/4044-16-0x0000000000400000-0x0000000000623000-memory.dmp	upx
behavioral2/memory/4044-90-0x0000000000400000-0x0000000000623000-memory.dmp	upx

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
900	MicrosoftToolkit.exe
900	MicrosoftToolkit.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\LOGS\DPX\setupact.log	expand.exe
File opened for modification	C:\Windows\LOGS\DPX\setuperr.log	expand.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MicrosoftToolkit.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	MicrosoftToolkit.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

pid	Process
1864	schtasks.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key created	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	Setup.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BaseBoardProduct	Setup.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
900	MicrosoftToolkit.exe
900	MicrosoftToolkit.exe
4044	Setup.exe
4044	Setup.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	4044	Setup.exe
Token: SeIncBasePriorityPrivilege	4044	Setup.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4044	Setup.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 900 wrote to memory of 4044	900	MicrosoftToolkit.exe	94
PID 900 wrote to memory of 4044	900	MicrosoftToolkit.exe	94
PID 900 wrote to memory of 4044	900	MicrosoftToolkit.exe	94
PID 900 wrote to memory of 2480	900	MicrosoftToolkit.exe	98
PID 900 wrote to memory of 2480	900	MicrosoftToolkit.exe	98
PID 900 wrote to memory of 2480	900	MicrosoftToolkit.exe	98
PID 2480 wrote to memory of 4992	2480	cmd.exe	100
PID 2480 wrote to memory of 4992	2480	cmd.exe	100
PID 2480 wrote to memory of 4992	2480	cmd.exe	100
PID 900 wrote to memory of 1324	900	MicrosoftToolkit.exe	101
PID 900 wrote to memory of 1324	900	MicrosoftToolkit.exe	101
PID 900 wrote to memory of 1324	900	MicrosoftToolkit.exe	101
PID 1324 wrote to memory of 1864	1324	cmd.exe	103
PID 1324 wrote to memory of 1864	1324	cmd.exe	103
PID 1324 wrote to memory of 1864	1324	cmd.exe	103

C:\Users\Admin\AppData\Local\Temp\MicrosoftToolkit.exe
"C:\Users\Admin\AppData\Local\Temp\MicrosoftToolkit.exe"
1⤵
- Checks computer location settings
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:900
- C:\Users\Admin\AppData\Local\Temp\Setup.exe
  "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:4044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c expand.exe "C:\Users\Admin\AppData\Roaming\ServiceData\c1Gt4H.tmp" -F:* "C:\Users\Admin\AppData\Roaming\ServiceData"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2480
- - C:\Windows\SysWOW64\expand.exe
    expand.exe "C:\Users\Admin\AppData\Roaming\ServiceData\c1Gt4H.tmp" -F:* "C:\Users\Admin\AppData\Roaming\ServiceData"
    3⤵
    - Drops file in Windows directory
    PID:4992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c schtasks /create /tn \Service\Data /tr """"C:\Users\Admin\AppData\Roaming\ServiceData\Davonevur.exe""" """C:\Users\Admin\AppData\Roaming\ServiceData\Davonevur.jpg"""" /st 00:01 /du 9800:59 /sc once /ri 1 /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1324
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /tn \Service\Data /tr """"C:\Users\Admin\AppData\Roaming\ServiceData\Davonevur.exe""" """C:\Users\Admin\AppData\Roaming\ServiceData\Davonevur.jpg"""" /st 00:01 /du 9800:59 /sc once /ri 1 /f
    3⤵
    - Creates scheduled task(s)
    PID:1864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Persistence

Scheduled Task/Job

Privilege Escalation

Scheduled Task/Job

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

System Information Discovery