cryptbot | cfc3d2f06848341ed58cc7b3e730f44cae6b6ac3b8cde61334ae9b2441c665fa

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.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	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe

Deletes itself 1 IoCs

pid	Process
2236	cmd.exe

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2280-0-0x0000000000EF0000-0x00000000015E5000-memory.dmp	themida
behavioral1/memory/2280-2-0x0000000000EF0000-0x00000000015E5000-memory.dmp	themida
behavioral1/memory/2280-3-0x0000000000EF0000-0x00000000015E5000-memory.dmp	themida
behavioral1/memory/2280-4-0x0000000000EF0000-0x00000000015E5000-memory.dmp	themida
behavioral1/memory/2280-5-0x0000000000EF0000-0x00000000015E5000-memory.dmp	themida
behavioral1/memory/2280-6-0x0000000000EF0000-0x00000000015E5000-memory.dmp	themida
behavioral1/memory/2280-7-0x0000000000EF0000-0x00000000015E5000-memory.dmp	themida

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	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2280	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

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	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2492	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2280	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2236	2280	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe	31
PID 2280 wrote to memory of 2236	2280	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe	31
PID 2280 wrote to memory of 2236	2280	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe	31
PID 2280 wrote to memory of 2236	2280	66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe	31
PID 2236 wrote to memory of 2492	2236	cmd.exe	33
PID 2236 wrote to memory of 2492	2236	cmd.exe	33
PID 2236 wrote to memory of 2492	2236	cmd.exe	33
PID 2236 wrote to memory of 2492	2236	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe
"C:\Users\Admin\AppData\Local\Temp\66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\BCoLfnEdT & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\66e4a874645a4e5cffa45813dd5e6bc38dd218247ff784a0618a2d38bdb4a767.exe"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2236
- - C:\Windows\SysWOW64\timeout.exe
    timeout 4
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion