privateloader | 80ee2b0cbfb7ecf1571669ba411b2a9bf0fc0293662a061055a17d7bdb30ead8

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	FUl7xGdnNVgvP6FJQ_mq.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	oobeldr.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 4 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\VideoBiosVersion	FUl7xGdnNVgvP6FJQ_mq.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	oobeldr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	oobeldr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	FUl7xGdnNVgvP6FJQ_mq.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-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	file.exe

Executes dropped EXE 2 IoCs

pid	Process
4660	FUl7xGdnNVgvP6FJQ_mq.exe
1064	oobeldr.exe

Loads dropped DLL 10 IoCs

pid	Process
1688	file.exe
1688	file.exe
1688	file.exe
1688	file.exe
1688	file.exe
1688	file.exe
1688	file.exe
1688	file.exe
1688	file.exe
1688	file.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

VMProtect packed file 1 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral2/memory/1688-133-0x0000000000180000-0x0000000000BEE000-memory.dmp	vmprotect

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	FUl7xGdnNVgvP6FJQ_mq.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	oobeldr.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
8	ipinfo.io
7	ipinfo.io

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4660	FUl7xGdnNVgvP6FJQ_mq.exe
1064	oobeldr.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	file.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

pid	Process
4348	schtasks.exe
3940	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1688	file.exe
1688	file.exe
4660	FUl7xGdnNVgvP6FJQ_mq.exe
4660	FUl7xGdnNVgvP6FJQ_mq.exe
4660	FUl7xGdnNVgvP6FJQ_mq.exe
4660	FUl7xGdnNVgvP6FJQ_mq.exe
4660	FUl7xGdnNVgvP6FJQ_mq.exe
4660	FUl7xGdnNVgvP6FJQ_mq.exe
1064	oobeldr.exe
1064	oobeldr.exe
1064	oobeldr.exe
1064	oobeldr.exe
1064	oobeldr.exe
1064	oobeldr.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 4660	1688	file.exe	86
PID 1688 wrote to memory of 4660	1688	file.exe	86
PID 1688 wrote to memory of 4660	1688	file.exe	86
PID 4660 wrote to memory of 4348	4660	FUl7xGdnNVgvP6FJQ_mq.exe	90
PID 4660 wrote to memory of 4348	4660	FUl7xGdnNVgvP6FJQ_mq.exe	90
PID 4660 wrote to memory of 4348	4660	FUl7xGdnNVgvP6FJQ_mq.exe	90
PID 1064 wrote to memory of 3940	1064	oobeldr.exe	94
PID 1064 wrote to memory of 3940	1064	oobeldr.exe	94
PID 1064 wrote to memory of 3940	1064	oobeldr.exe	94

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Users\Admin\AppData\Local\Temp\LocalSimba2XtFde0yK7o\FUl7xGdnNVgvP6FJQ_mq.exe
  "C:\Users\Admin\AppData\Local\Temp\LocalSimba2XtFde0yK7o\FUl7xGdnNVgvP6FJQ_mq.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4660
- - C:\Windows\SysWOW64\schtasks.exe
    /C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
    3⤵
    - Creates scheduled task(s)
    PID:4348

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Windows\SysWOW64\schtasks.exe
  /C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
  2⤵
  - Creates scheduled task(s)
  PID:3940

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

System Information Discovery