bitrat | 49568dbced141895672057dc8244ce926ba027f7d04915a3a8504584f56b2c87

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	b4a26290880d3fb80df39f433ebb0490.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	b4a26290880d3fb80df39f433ebb0490.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	b4a26290880d3fb80df39f433ebb0490.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b4a26290880d3fb80df39f433ebb0490.exe

UPX packed file 30 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2412-40-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-42-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-44-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-45-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-46-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-50-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-49-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-54-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-55-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-56-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-57-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-58-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-60-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-59-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-61-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-63-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-62-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-64-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-65-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-66-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-67-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-68-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-69-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-70-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-72-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-71-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-73-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-74-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-75-0x0000000000400000-0x00000000007E4000-memory.dmp	upx
behavioral1/memory/2412-76-0x0000000000400000-0x00000000007E4000-memory.dmp	upx

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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b4a26290880d3fb80df39f433ebb0490.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	b4a26290880d3fb80df39f433ebb0490.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
2412	MSBuild.exe
2412	MSBuild.exe
2412	MSBuild.exe
2412	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1612 set thread context of 2412	1612	b4a26290880d3fb80df39f433ebb0490.exe	38

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
1032	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2404	powershell.exe
2560	powershell.exe
1868	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2404	powershell.exe
Token: SeDebugPrivilege	2560	powershell.exe
Token: SeDebugPrivilege	1868	powershell.exe
Token: SeDebugPrivilege	2412	MSBuild.exe
Token: SeShutdownPrivilege	2412	MSBuild.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2412	MSBuild.exe
2412	MSBuild.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 2560	1612	b4a26290880d3fb80df39f433ebb0490.exe	30
PID 1612 wrote to memory of 2560	1612	b4a26290880d3fb80df39f433ebb0490.exe	30
PID 1612 wrote to memory of 2560	1612	b4a26290880d3fb80df39f433ebb0490.exe	30
PID 1612 wrote to memory of 2560	1612	b4a26290880d3fb80df39f433ebb0490.exe	30
PID 1612 wrote to memory of 2404	1612	b4a26290880d3fb80df39f433ebb0490.exe	33
PID 1612 wrote to memory of 2404	1612	b4a26290880d3fb80df39f433ebb0490.exe	33
PID 1612 wrote to memory of 2404	1612	b4a26290880d3fb80df39f433ebb0490.exe	33
PID 1612 wrote to memory of 2404	1612	b4a26290880d3fb80df39f433ebb0490.exe	33
PID 1612 wrote to memory of 1032	1612	b4a26290880d3fb80df39f433ebb0490.exe	35
PID 1612 wrote to memory of 1032	1612	b4a26290880d3fb80df39f433ebb0490.exe	35
PID 1612 wrote to memory of 1032	1612	b4a26290880d3fb80df39f433ebb0490.exe	35
PID 1612 wrote to memory of 1032	1612	b4a26290880d3fb80df39f433ebb0490.exe	35
PID 1612 wrote to memory of 1868	1612	b4a26290880d3fb80df39f433ebb0490.exe	37
PID 1612 wrote to memory of 1868	1612	b4a26290880d3fb80df39f433ebb0490.exe	37
PID 1612 wrote to memory of 1868	1612	b4a26290880d3fb80df39f433ebb0490.exe	37
PID 1612 wrote to memory of 1868	1612	b4a26290880d3fb80df39f433ebb0490.exe	37
PID 1612 wrote to memory of 2412	1612	b4a26290880d3fb80df39f433ebb0490.exe	38
PID 1612 wrote to memory of 2412	1612	b4a26290880d3fb80df39f433ebb0490.exe	38
PID 1612 wrote to memory of 2412	1612	b4a26290880d3fb80df39f433ebb0490.exe	38
PID 1612 wrote to memory of 2412	1612	b4a26290880d3fb80df39f433ebb0490.exe	38
PID 1612 wrote to memory of 2412	1612	b4a26290880d3fb80df39f433ebb0490.exe	38
PID 1612 wrote to memory of 2412	1612	b4a26290880d3fb80df39f433ebb0490.exe	38
PID 1612 wrote to memory of 2412	1612	b4a26290880d3fb80df39f433ebb0490.exe	38
PID 1612 wrote to memory of 2412	1612	b4a26290880d3fb80df39f433ebb0490.exe	38

C:\Users\Admin\AppData\Local\Temp\b4a26290880d3fb80df39f433ebb0490.exe
"C:\Users\Admin\AppData\Local\Temp\b4a26290880d3fb80df39f433ebb0490.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:1612
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\b4a26290880d3fb80df39f433ebb0490.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2560
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QhNsxxGtGmp.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2404
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QhNsxxGtGmp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3572.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1032
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QhNsxxGtGmp.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1868
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2412

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