nanocore | 8d978bfba2436ba7ee3393e84322da7fa62626d6de95e4ae4a36e85200814b04

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	aac74ecd1d07a69d7e7465745c2f4971.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	aac74ecd1d07a69d7e7465745c2f4971.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	aac74ecd1d07a69d7e7465745c2f4971.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	aac74ecd1d07a69d7e7465745c2f4971.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\SCSI Service = "C:\\Program Files (x86)\\SCSI Service\\scsisvc.exe"	aac74ecd1d07a69d7e7465745c2f4971.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	aac74ecd1d07a69d7e7465745c2f4971.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	aac74ecd1d07a69d7e7465745c2f4971.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	aac74ecd1d07a69d7e7465745c2f4971.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1048 set thread context of 568	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	34

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SCSI Service\scsisvc.exe	aac74ecd1d07a69d7e7465745c2f4971.exe
File opened for modification	C:\Program Files (x86)\SCSI Service\scsisvc.exe	aac74ecd1d07a69d7e7465745c2f4971.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

pid	Process
672	schtasks.exe
1652	schtasks.exe
1332	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1048	aac74ecd1d07a69d7e7465745c2f4971.exe
432	powershell.exe
1296	powershell.exe
1048	aac74ecd1d07a69d7e7465745c2f4971.exe
568	aac74ecd1d07a69d7e7465745c2f4971.exe
568	aac74ecd1d07a69d7e7465745c2f4971.exe
568	aac74ecd1d07a69d7e7465745c2f4971.exe
568	aac74ecd1d07a69d7e7465745c2f4971.exe
568	aac74ecd1d07a69d7e7465745c2f4971.exe
568	aac74ecd1d07a69d7e7465745c2f4971.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
568	aac74ecd1d07a69d7e7465745c2f4971.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1048	aac74ecd1d07a69d7e7465745c2f4971.exe
Token: SeDebugPrivilege	432	powershell.exe
Token: SeDebugPrivilege	1296	powershell.exe
Token: SeDebugPrivilege	568	aac74ecd1d07a69d7e7465745c2f4971.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 1296	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	27
PID 1048 wrote to memory of 1296	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	27
PID 1048 wrote to memory of 1296	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	27
PID 1048 wrote to memory of 1296	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	27
PID 1048 wrote to memory of 432	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	30
PID 1048 wrote to memory of 432	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	30
PID 1048 wrote to memory of 432	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	30
PID 1048 wrote to memory of 432	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	30
PID 1048 wrote to memory of 672	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	32
PID 1048 wrote to memory of 672	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	32
PID 1048 wrote to memory of 672	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	32
PID 1048 wrote to memory of 672	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	32
PID 1048 wrote to memory of 568	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	34
PID 1048 wrote to memory of 568	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	34
PID 1048 wrote to memory of 568	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	34
PID 1048 wrote to memory of 568	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	34
PID 1048 wrote to memory of 568	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	34
PID 1048 wrote to memory of 568	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	34
PID 1048 wrote to memory of 568	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	34
PID 1048 wrote to memory of 568	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	34
PID 1048 wrote to memory of 568	1048	aac74ecd1d07a69d7e7465745c2f4971.exe	34
PID 568 wrote to memory of 1652	568	aac74ecd1d07a69d7e7465745c2f4971.exe	35
PID 568 wrote to memory of 1652	568	aac74ecd1d07a69d7e7465745c2f4971.exe	35
PID 568 wrote to memory of 1652	568	aac74ecd1d07a69d7e7465745c2f4971.exe	35
PID 568 wrote to memory of 1652	568	aac74ecd1d07a69d7e7465745c2f4971.exe	35
PID 568 wrote to memory of 1332	568	aac74ecd1d07a69d7e7465745c2f4971.exe	37
PID 568 wrote to memory of 1332	568	aac74ecd1d07a69d7e7465745c2f4971.exe	37
PID 568 wrote to memory of 1332	568	aac74ecd1d07a69d7e7465745c2f4971.exe	37
PID 568 wrote to memory of 1332	568	aac74ecd1d07a69d7e7465745c2f4971.exe	37

C:\Users\Admin\AppData\Local\Temp\aac74ecd1d07a69d7e7465745c2f4971.exe
"C:\Users\Admin\AppData\Local\Temp\aac74ecd1d07a69d7e7465745c2f4971.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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1048
- 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\aac74ecd1d07a69d7e7465745c2f4971.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1296
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\lECtpT.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:432
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lECtpT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA42C.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:672
- C:\Users\Admin\AppData\Local\Temp\aac74ecd1d07a69d7e7465745c2f4971.exe
  "C:\Users\Admin\AppData\Local\Temp\aac74ecd1d07a69d7e7465745c2f4971.exe"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:568
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SCSI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA95A.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1652
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SCSI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAA84.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1332

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion