remcos | 3536f79b815a6d77e371df48abaec315c92ccec6e197e547440fa66629edd640

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.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	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.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	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.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	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4000 set thread context of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
660	powershell.exe
660	powershell.exe
660	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	660	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4000 wrote to memory of 660	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	100
PID 4000 wrote to memory of 660	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	100
PID 4000 wrote to memory of 660	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	100
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102
PID 4000 wrote to memory of 2436	4000	fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe	102

C:\Users\Admin\AppData\Local\Temp\fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.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 use of WriteProcessMemory
PID:4000
- 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\fdd9b67bd04d1768858f095d90d5dc88_JaffaCakes118.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:660
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:2436

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3904 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:4828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion