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

T1082

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

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

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2220 set thread context of 2132	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	33

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

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/Job

pid	Process
2520	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2132	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2520	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	31
PID 2220 wrote to memory of 2520	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	31
PID 2220 wrote to memory of 2520	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	31
PID 2220 wrote to memory of 2520	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	31
PID 2220 wrote to memory of 2132	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	33
PID 2220 wrote to memory of 2132	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	33
PID 2220 wrote to memory of 2132	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	33
PID 2220 wrote to memory of 2132	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	33
PID 2220 wrote to memory of 2132	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	33
PID 2220 wrote to memory of 2132	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	33
PID 2220 wrote to memory of 2132	2220	b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe	33

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
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IiTdunToFK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD99D.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2520
- C:\Users\Admin\AppData\Local\Temp\b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe
  "C:\Users\Admin\AppData\Local\Temp\b79369c7e79099736c882b54a54898237dc1506acef308849e8cfa88277de46d.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2132

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

T1082

Virtualization/Sandbox Evasion