formbook | b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.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	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.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	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.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	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 552 set thread context of 4992	552	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	102

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3492	4992	WerFault.exe	102

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
2712	schtasks.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 552 wrote to memory of 2712	552	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	100
PID 552 wrote to memory of 2712	552	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	100
PID 552 wrote to memory of 2712	552	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	100
PID 552 wrote to memory of 4992	552	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	102
PID 552 wrote to memory of 4992	552	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	102
PID 552 wrote to memory of 4992	552	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	102
PID 552 wrote to memory of 4992	552	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	102
PID 552 wrote to memory of 4992	552	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	102
PID 552 wrote to memory of 4992	552	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	102

C:\Users\Admin\AppData\Local\Temp\b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe
"C:\Users\Admin\AppData\Local\Temp\b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe"
1⤵
- 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
- Suspicious use of WriteProcessMemory
PID:552
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IiTdunToFK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF01D.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2712
- C:\Users\Admin\AppData\Local\Temp\b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe
  "C:\Users\Admin\AppData\Local\Temp\b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe"
  2⤵
  PID:4992
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 184
    3⤵
    - Program crash
    PID:3492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4992 -ip 4992
1⤵
PID:4624

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

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion