4a9a590ed83b58c15b4ac8d0da1d8514a847d355d9015f23778d7367505feaea

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2bf41070-b2b1-21d1-b5c1-0305f4055515}	svcr.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{2bf41070-b2b1-21d1-b5c1-0305f4055515}\StubPath = "C:\\windows\\svcr.exe"	svcr.exe

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\SystemBiosDate	svcr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svcr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	d53f5e4e89f3f23bcd74f2282c432e8b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	d53f5e4e89f3f23bcd74f2282c432e8b.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	d53f5e4e89f3f23bcd74f2282c432e8b.exe

Deletes itself 1 IoCs

pid	Process
4848	svcr.exe

Executes dropped EXE 1 IoCs

pid	Process
4848	svcr.exe

UPX packed file 16 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3484-1-0x00000000026D0000-0x00000000026E1000-memory.dmp	upx
behavioral2/memory/3484-2-0x00000000026D0000-0x00000000026E1000-memory.dmp	upx
behavioral2/memory/3484-3-0x00000000026D0000-0x00000000026E1000-memory.dmp	upx
behavioral2/memory/3484-5-0x00000000026D0000-0x00000000026E1000-memory.dmp	upx
behavioral2/memory/3484-6-0x00000000027F0000-0x0000000002828000-memory.dmp	upx
behavioral2/memory/3484-7-0x00000000027F0000-0x0000000002828000-memory.dmp	upx
behavioral2/memory/3484-22-0x00000000026D0000-0x00000000026E1000-memory.dmp	upx
behavioral2/memory/4848-31-0x00000000001E0000-0x00000000001F1000-memory.dmp	upx
behavioral2/memory/4848-34-0x00000000001E0000-0x00000000001F1000-memory.dmp	upx
behavioral2/memory/4848-33-0x00000000001E0000-0x00000000001F1000-memory.dmp	upx
behavioral2/memory/3484-32-0x00000000027F0000-0x0000000002828000-memory.dmp	upx
behavioral2/memory/4848-36-0x00000000001E0000-0x00000000001F1000-memory.dmp	upx
behavioral2/memory/4848-37-0x0000000002440000-0x0000000002478000-memory.dmp	upx
behavioral2/memory/4848-38-0x0000000002440000-0x0000000002478000-memory.dmp	upx
behavioral2/memory/4848-54-0x00000000001E0000-0x00000000001F1000-memory.dmp	upx
behavioral2/memory/4848-59-0x0000000002440000-0x0000000002478000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Windows\\svcr.exe"	d53f5e4e89f3f23bcd74f2282c432e8b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Windows\\svcr.exe"	d53f5e4e89f3f23bcd74f2282c432e8b.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svcr.exe	d53f5e4e89f3f23bcd74f2282c432e8b.exe
File created	C:\Windows\svcr.exe	d53f5e4e89f3f23bcd74f2282c432e8b.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 14 IoCs

Processor 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\CentralProcessor\0\ProcessorNameString	d53f5e4e89f3f23bcd74f2282c432e8b.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svcr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	svcr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	svcr.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	d53f5e4e89f3f23bcd74f2282c432e8b.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	d53f5e4e89f3f23bcd74f2282c432e8b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	d53f5e4e89f3f23bcd74f2282c432e8b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet	svcr.exe
Key value enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	d53f5e4e89f3f23bcd74f2282c432e8b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	d53f5e4e89f3f23bcd74f2282c432e8b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svcr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\FeatureSet	d53f5e4e89f3f23bcd74f2282c432e8b.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svcr.exe
Key value enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svcr.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	d53f5e4e89f3f23bcd74f2282c432e8b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	svcr.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3484	d53f5e4e89f3f23bcd74f2282c432e8b.exe
3484	d53f5e4e89f3f23bcd74f2282c432e8b.exe
4848	svcr.exe
4848	svcr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4848	svcr.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3484 wrote to memory of 4848	3484	d53f5e4e89f3f23bcd74f2282c432e8b.exe	97
PID 3484 wrote to memory of 4848	3484	d53f5e4e89f3f23bcd74f2282c432e8b.exe	97
PID 3484 wrote to memory of 4848	3484	d53f5e4e89f3f23bcd74f2282c432e8b.exe	97
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57
PID 4848 wrote to memory of 3300	4848	svcr.exe	57

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3300
- C:\Users\Admin\AppData\Local\Temp\d53f5e4e89f3f23bcd74f2282c432e8b.exe
  "C:\Users\Admin\AppData\Local\Temp\d53f5e4e89f3f23bcd74f2282c432e8b.exe"
  2⤵
  - Checks BIOS information in registry
  - Checks computer location settings
  - Adds Run key to start application
  - Drops file in Windows directory
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3484
- - C:\Windows\svcr.exe
    "C:\Windows\svcr.exe" "C:\Users\Admin\AppData\Local\Temp\d53f5e4e89f3f23bcd74f2282c432e8b.exe"
    3⤵
    - Modifies Installed Components in the registry
    - Checks BIOS information in registry
    - Deletes itself
    - Executes dropped EXE
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4848

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=2392 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
1⤵
PID:3692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

System Information Discovery