formbook | 8e174883f3534b9cc35a7f6abe7afcd110d8a147087e29f40e8a697f4de0e04c

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	Remittance Scan DOC-2029293#PI207-048.pptx.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	Remittance Scan DOC-2029293#PI207-048.pptx.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	Remittance Scan DOC-2029293#PI207-048.pptx.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Remittance Scan DOC-2029293#PI207-048.pptx.exe

Deletes itself 1 IoCs

pid	Process
2872	cmd.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	Remittance Scan DOC-2029293#PI207-048.pptx.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Remittance Scan DOC-2029293#PI207-048.pptx.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1936 set thread context of 2664	1936	Remittance Scan DOC-2029293#PI207-048.pptx.exe	32
PID 2664 set thread context of 1240	2664	Remittance Scan DOC-2029293#PI207-048.pptx.exe	21
PID 2336 set thread context of 1240	2336	chkdsk.exe	21

System Location Discovery: System Language Discovery 1 TTPs 3 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	Remittance Scan DOC-2029293#PI207-048.pptx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2664	Remittance Scan DOC-2029293#PI207-048.pptx.exe
2664	Remittance Scan DOC-2029293#PI207-048.pptx.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe
2336	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2664	Remittance Scan DOC-2029293#PI207-048.pptx.exe
2664	Remittance Scan DOC-2029293#PI207-048.pptx.exe
2664	Remittance Scan DOC-2029293#PI207-048.pptx.exe
2336	chkdsk.exe
2336	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	Remittance Scan DOC-2029293#PI207-048.pptx.exe
Token: SeDebugPrivilege	2336	chkdsk.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 2664	1936	Remittance Scan DOC-2029293#PI207-048.pptx.exe	32
PID 1936 wrote to memory of 2664	1936	Remittance Scan DOC-2029293#PI207-048.pptx.exe	32
PID 1936 wrote to memory of 2664	1936	Remittance Scan DOC-2029293#PI207-048.pptx.exe	32
PID 1936 wrote to memory of 2664	1936	Remittance Scan DOC-2029293#PI207-048.pptx.exe	32
PID 1936 wrote to memory of 2664	1936	Remittance Scan DOC-2029293#PI207-048.pptx.exe	32
PID 1936 wrote to memory of 2664	1936	Remittance Scan DOC-2029293#PI207-048.pptx.exe	32
PID 1936 wrote to memory of 2664	1936	Remittance Scan DOC-2029293#PI207-048.pptx.exe	32
PID 1240 wrote to memory of 2336	1240	Explorer.EXE	33
PID 1240 wrote to memory of 2336	1240	Explorer.EXE	33
PID 1240 wrote to memory of 2336	1240	Explorer.EXE	33
PID 1240 wrote to memory of 2336	1240	Explorer.EXE	33
PID 2336 wrote to memory of 2872	2336	chkdsk.exe	34
PID 2336 wrote to memory of 2872	2336	chkdsk.exe	34
PID 2336 wrote to memory of 2872	2336	chkdsk.exe	34
PID 2336 wrote to memory of 2872	2336	chkdsk.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Users\Admin\AppData\Local\Temp\Remittance Scan DOC-2029293#PI207-048.pptx.exe
  "C:\Users\Admin\AppData\Local\Temp\Remittance Scan DOC-2029293#PI207-048.pptx.exe"
  2⤵
  - Looks for VirtualBox Guest Additions in registry
  - Looks for VMWare Tools registry key
  - Checks BIOS information in registry
  - Maps connected drives based on registry
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1936
- - C:\Users\Admin\AppData\Local\Temp\Remittance Scan DOC-2029293#PI207-048.pptx.exe
    "{path}"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2664
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2336
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Remittance Scan DOC-2029293#PI207-048.pptx.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2872

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2