formbook | e7e6d1c7dda7f813373224350a84133f231850c14c3bf771cc9026a7c9ebf813

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	Purchase Order.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	Purchase Order.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	Purchase Order.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Purchase Order.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	Purchase Order.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Purchase Order.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Purchase Order.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3980 set thread context of 1520	3980	Purchase Order.exe	93
PID 1520 set thread context of 3484	1520	RegSvcs.exe	56
PID 2368 set thread context of 3484	2368	help.exe	56

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	help.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Purchase Order.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
2060	schtasks.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

pid	Process
3980	Purchase Order.exe
3980	Purchase Order.exe
3980	Purchase Order.exe
3980	Purchase Order.exe
1520	RegSvcs.exe
1520	RegSvcs.exe
1520	RegSvcs.exe
1520	RegSvcs.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe
2368	help.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1520	RegSvcs.exe
1520	RegSvcs.exe
1520	RegSvcs.exe
2368	help.exe
2368	help.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3980	Purchase Order.exe
Token: SeDebugPrivilege	1520	RegSvcs.exe
Token: SeDebugPrivilege	2368	help.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3980 wrote to memory of 2060	3980	Purchase Order.exe	91
PID 3980 wrote to memory of 2060	3980	Purchase Order.exe	91
PID 3980 wrote to memory of 2060	3980	Purchase Order.exe	91
PID 3980 wrote to memory of 1520	3980	Purchase Order.exe	93
PID 3980 wrote to memory of 1520	3980	Purchase Order.exe	93
PID 3980 wrote to memory of 1520	3980	Purchase Order.exe	93
PID 3980 wrote to memory of 1520	3980	Purchase Order.exe	93
PID 3980 wrote to memory of 1520	3980	Purchase Order.exe	93
PID 3980 wrote to memory of 1520	3980	Purchase Order.exe	93
PID 3484 wrote to memory of 2368	3484	Explorer.EXE	94
PID 3484 wrote to memory of 2368	3484	Explorer.EXE	94
PID 3484 wrote to memory of 2368	3484	Explorer.EXE	94
PID 2368 wrote to memory of 2824	2368	help.exe	95
PID 2368 wrote to memory of 2824	2368	help.exe	95
PID 2368 wrote to memory of 2824	2368	help.exe	95

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
  2⤵
  - Looks for VirtualBox Guest Additions in registry
  - Looks for VMWare Tools registry key
  - Checks BIOS information in registry
  - Checks computer location settings
  - Maps connected drives based on registry
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3980
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OtKlDrIky" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1F7A.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2060
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "{path}"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1520
- C:\Windows\SysWOW64\help.exe
  "C:\Windows\SysWOW64\help.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2368
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2824

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

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

2