Analysis Overview
SHA256
ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0
Threat Level: Known bad
The file ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
Loads dropped DLL
Executes dropped EXE
Deletes itself
Checks computer location settings
Adds Run key to start application
Suspicious use of SetThreadContext
Drops file in Windows directory
Enumerates physical storage devices
Unsigned PE
System Location Discovery: System Language Discovery
Checks processor information in registry
Suspicious use of WriteProcessMemory
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-12 13:53
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-12 13:53
Reported
2024-11-12 13:56
Platform
win7-20240903-en
Max time kernel
119s
Max time network
119s
Command Line
Signatures
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\service.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\service.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\service.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\System Service Application = "C:\\Users\\Admin\\AppData\\Local\\Temp\\service.exe" | C:\Users\Admin\AppData\Local\Temp\service.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1852 set thread context of 2428 | N/A | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe |
| PID 2748 set thread context of 2616 | N/A | C:\Users\Admin\AppData\Local\Temp\service.exe | C:\Users\Admin\AppData\Local\Temp\service.exe |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\service.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\service.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\service.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Users\Admin\AppData\Local\Temp\service.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe
"C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe"
C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe
"C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\remove13241.bat" "
C:\Users\Admin\AppData\Local\Temp\service.exe
"C:\Users\Admin\AppData\Local\Temp\service.exe"
C:\Users\Admin\AppData\Local\Temp\service.exe
"C:\Users\Admin\AppData\Local\Temp\service.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | lowbyte.bigmops.ru | udp |
Files
memory/2428-6-0x0000000000400000-0x000000000041A000-memory.dmp
memory/1852-9-0x0000000000400000-0x000000000044B000-memory.dmp
memory/2428-8-0x0000000000400000-0x000000000041A000-memory.dmp
memory/2428-12-0x0000000000400000-0x000000000041A000-memory.dmp
memory/2428-11-0x0000000000400000-0x000000000041A000-memory.dmp
memory/2428-4-0x0000000000400000-0x000000000041A000-memory.dmp
memory/2428-2-0x0000000000400000-0x000000000041A000-memory.dmp
memory/2428-0-0x0000000000400000-0x000000000041A000-memory.dmp
C:\Users\Admin\remove13241.bat
| MD5 | 6c6503303985b1ff09b979223e9b682c |
| SHA1 | 1172ca8d6ced99fe023e0de563e8ac36608e197d |
| SHA256 | 85d657a903ab6a6b8d226e273ba311b0c58074a7d3b01a0d402dfbf5910c9a43 |
| SHA512 | 1d9ffffe6ac051b85852190228e687351dd275d1f0e0478826735699992646ee2b6f7bb79c0712ea274e68fe3606c8af14dfd292421c9c2fbbc68b03398fdad3 |
C:\Users\Admin\AppData\Local\Temp\service.exe
| MD5 | 86ca0bc25c34d43750812b3a12a762aa |
| SHA1 | 95bb483eeae9544cac093963d24412ef4883f26d |
| SHA256 | 448f60b053d0c1ff8975b95e09d9267a3a492a7ca514359069e3cb97f53f3dc6 |
| SHA512 | 2a3794ae9890fd69374c3ff44291a2b6aa430ff9410a0762f619165a7281dc98ad4709aac65286fb9e90b25bdf60b8e688fb5693545cac5e20b0ee99652ea271 |
memory/2428-40-0x0000000000400000-0x000000000041A000-memory.dmp
memory/2616-54-0x0000000000400000-0x000000000041A000-memory.dmp
memory/2748-53-0x0000000000400000-0x000000000044B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\shell32.dll
| MD5 | cac6c9c44b7ba77569037004849f4d6d |
| SHA1 | 6bdf754cf0bb144e17ffd703663e4c5801598317 |
| SHA256 | 745528a15bf44f5504e5a1a27a5397e70dd6b1790093928f730a181e74776835 |
| SHA512 | a38711de27f0ca7a3f0673f3fdc16e1aa20e7828b7db16041d6307e7c68f3ef78ee3e007754f98a4ff113f99ec1b32ffece6e16a7dfdae3e1a287e009b9fa114 |
memory/2616-56-0x0000000000400000-0x000000000041A000-memory.dmp
memory/2616-57-0x0000000000400000-0x000000000041A000-memory.dmp
memory/2616-58-0x0000000000400000-0x000000000041A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-12 13:53
Reported
2024-11-12 13:56
Platform
win10v2004-20241007-en
Max time kernel
118s
Max time network
95s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\service.exe" | C:\Windows\service.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\service.exe | N/A |
| N/A | N/A | C:\Windows\service.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System Service Application = "C:\\Windows\\service.exe" | C:\Windows\service.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4932 set thread context of 1884 | N/A | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe |
| PID 3104 set thread context of 3732 | N/A | C:\Windows\service.exe | C:\Windows\service.exe |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\service.exe | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
| File opened for modification | C:\Windows\service.exe | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
| File created | C:\Windows\service.exe | C:\Windows\service.exe | N/A |
| File opened for modification | C:\Windows\service.exe | C:\Windows\service.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\service.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\service.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\service.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\service.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ | C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe
"C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe"
C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe
"C:\Users\Admin\AppData\Local\Temp\ac6a274f5fde714dfd8bba9e46bb724861e4b406ea132d119e2e872d0b58abd0N.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\remove30108.bat" "
C:\Windows\service.exe
"C:\Windows\service.exe"
C:\Windows\service.exe
"C:\Windows\service.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | lowbyte.bigmops.ru | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 100.117.19.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
Files
memory/1884-0-0x0000000000400000-0x000000000041A000-memory.dmp
memory/4932-2-0x0000000000400000-0x000000000044B000-memory.dmp
memory/1884-3-0x0000000000400000-0x000000000041A000-memory.dmp
memory/1884-4-0x0000000000400000-0x000000000041A000-memory.dmp
C:\Windows\service.exe
| MD5 | 6e3a65fc1cde08d4b32b9a5ffb493c4d |
| SHA1 | a984cc254aae4ab91f3156c2ce3a6654c9c8a715 |
| SHA256 | 4422e3f6805d73d8d0460489f46a52c630ab9856f1693e79b0c0980d9b86e62e |
| SHA512 | 5b89506ae0c1eb2d683b9c5033ba6aff379e5a83dd4f695fc0490f9e7314dafa9c344a5b1ddec95588111c397a4aef3a52ba253aa928e9af556b612f7f14f8fc |
C:\Users\Admin\AppData\Local\Temp\remove30108.bat
| MD5 | 6c6503303985b1ff09b979223e9b682c |
| SHA1 | 1172ca8d6ced99fe023e0de563e8ac36608e197d |
| SHA256 | 85d657a903ab6a6b8d226e273ba311b0c58074a7d3b01a0d402dfbf5910c9a43 |
| SHA512 | 1d9ffffe6ac051b85852190228e687351dd275d1f0e0478826735699992646ee2b6f7bb79c0712ea274e68fe3606c8af14dfd292421c9c2fbbc68b03398fdad3 |
memory/1884-48-0x0000000000400000-0x000000000041A000-memory.dmp
memory/3104-53-0x0000000000400000-0x000000000044B000-memory.dmp
memory/3732-54-0x0000000000400000-0x000000000041A000-memory.dmp
memory/3732-55-0x0000000000400000-0x000000000041A000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\shell32.dll
| MD5 | cac6c9c44b7ba77569037004849f4d6d |
| SHA1 | 6bdf754cf0bb144e17ffd703663e4c5801598317 |
| SHA256 | 745528a15bf44f5504e5a1a27a5397e70dd6b1790093928f730a181e74776835 |
| SHA512 | a38711de27f0ca7a3f0673f3fdc16e1aa20e7828b7db16041d6307e7c68f3ef78ee3e007754f98a4ff113f99ec1b32ffece6e16a7dfdae3e1a287e009b9fa114 |
memory/3732-58-0x0000000000400000-0x000000000041A000-memory.dmp
memory/3732-57-0x0000000000400000-0x000000000041A000-memory.dmp
memory/3732-59-0x0000000000400000-0x000000000041A000-memory.dmp