bitrat | 954eeaefa91f80e80df9cc550c0cc16f52ad063f8ca3494c40ebc5c51ebc635b

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	b087a691094f9fdd25b7b1828ff7d9fb.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	b087a691094f9fdd25b7b1828ff7d9fb.exe

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral2/memory/4444-8-0x0000000005230000-0x0000000005248000-memory.dmp	net_reactor

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	b087a691094f9fdd25b7b1828ff7d9fb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b087a691094f9fdd25b7b1828ff7d9fb.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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	b087a691094f9fdd25b7b1828ff7d9fb.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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	b087a691094f9fdd25b7b1828ff7d9fb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b087a691094f9fdd25b7b1828ff7d9fb.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
3584	RegSvcs.exe
3584	RegSvcs.exe
3584	RegSvcs.exe
3584	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4444 set thread context of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107

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
4640	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4444	b087a691094f9fdd25b7b1828ff7d9fb.exe
4444	b087a691094f9fdd25b7b1828ff7d9fb.exe
4444	b087a691094f9fdd25b7b1828ff7d9fb.exe
4444	b087a691094f9fdd25b7b1828ff7d9fb.exe
4444	b087a691094f9fdd25b7b1828ff7d9fb.exe
4444	b087a691094f9fdd25b7b1828ff7d9fb.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe
Token: SeShutdownPrivilege	3584	RegSvcs.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3584	RegSvcs.exe
3584	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4444 wrote to memory of 4640	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	103
PID 4444 wrote to memory of 4640	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	103
PID 4444 wrote to memory of 4640	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	103
PID 4444 wrote to memory of 1276	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	105
PID 4444 wrote to memory of 1276	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	105
PID 4444 wrote to memory of 1276	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	105
PID 4444 wrote to memory of 684	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	106
PID 4444 wrote to memory of 684	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	106
PID 4444 wrote to memory of 684	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	106
PID 4444 wrote to memory of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107
PID 4444 wrote to memory of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107
PID 4444 wrote to memory of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107
PID 4444 wrote to memory of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107
PID 4444 wrote to memory of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107
PID 4444 wrote to memory of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107
PID 4444 wrote to memory of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107
PID 4444 wrote to memory of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107
PID 4444 wrote to memory of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107
PID 4444 wrote to memory of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107
PID 4444 wrote to memory of 3584	4444	b087a691094f9fdd25b7b1828ff7d9fb.exe	107

C:\Users\Admin\AppData\Local\Temp\b087a691094f9fdd25b7b1828ff7d9fb.exe
"C:\Users\Admin\AppData\Local\Temp\b087a691094f9fdd25b7b1828ff7d9fb.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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4444
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tBJkUjvPFcL" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3E4C.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4640
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:1276
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:684
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3584

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