Analysis Overview
SHA256
a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f
Threat Level: Known bad
The file a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f was found to be: Known bad.
Malicious Activity Summary
Sodinokibi family
Sodin,Sodinokibi,REvil
Modifies Installed Components in the registry
Modifies extensions of user files
Drops startup file
Reads user/profile data of web browsers
Adds Run key to start application
Enumerates connected drives
Drops desktop.ini file(s)
Drops file in Windows directory
Drops file in Program Files directory
Program crash
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Modifies registry class
Suspicious use of SendNotifyMessage
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-01-24 01:26
Signatures
Sodinokibi family
Analysis: behavioral1
Detonation Overview
Submitted
2022-01-24 01:26
Reported
2022-01-24 06:59
Platform
win7-en-20211208
Max time kernel
144s
Max time network
130s
Command Line
Signatures
Sodin,Sodinokibi,REvil
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\RegisterUninstall.png => \??\c:\users\admin\pictures\RegisterUninstall.png.ko665 | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RenameStep.png => \??\c:\users\admin\pictures\RenameStep.png.ko665 | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RenameRestart.tiff => \??\c:\users\admin\pictures\RenameRestart.tiff.ko665 | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\StopInvoke.png => \??\c:\users\admin\pictures\StopInvoke.png.ko665 | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| File opened for modification | \??\c:\users\admin\pictures\RenameRestart.tiff | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\CompleteResolve.crw => \??\c:\users\admin\pictures\CompleteResolve.crw.ko665 | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ProtectConfirm.png => \??\c:\users\admin\pictures\ProtectConfirm.png.ko665 | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | \??\c:\users\admin\appdata\roaming\microsoft\windows\start menu\programs\startup\ko665-readme.txt | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Z5egGonjst = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe" | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
Drops desktop.ini file(s)
Enumerates connected drives
Drops file in Program Files directory
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\WerFault.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\system32\WerFault.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeAuditPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\WerFault.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1692 wrote to memory of 896 | N/A | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1692 wrote to memory of 896 | N/A | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1692 wrote to memory of 896 | N/A | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1692 wrote to memory of 896 | N/A | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe
"C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
C:\Windows\system32\wbem\unsecapp.exe
C:\Windows\system32\wbem\unsecapp.exe -Embedding
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1200 -s 3016
Network
Files
memory/1692-54-0x0000000075B51000-0x0000000075B53000-memory.dmp
memory/896-55-0x000007FEFB9C1000-0x000007FEFB9C3000-memory.dmp
memory/896-57-0x0000000002800000-0x0000000002802000-memory.dmp
memory/896-58-0x0000000002802000-0x0000000002804000-memory.dmp
memory/896-59-0x0000000002804000-0x0000000002807000-memory.dmp
memory/896-56-0x000007FEF2D90000-0x000007FEF38ED000-memory.dmp
memory/896-60-0x000000000280B000-0x000000000282A000-memory.dmp
memory/1000-64-0x0000000000460000-0x0000000000461000-memory.dmp
\??\c:\users\admin\appdata\roaming\microsoft\windows\recent\customdestinations\590aee7bdd69b59b.customDestinations-ms
| MD5 | 55ff845f3bd13cf4f644bc22370d4674 |
| SHA1 | 77983f747d89791cb23256cf2890de0b6b728054 |
| SHA256 | 856ad94421d71a14ffdd793bb76663426812ed8aafa39ca82521bb2b21023068 |
| SHA512 | f35b9a9bc62e49f79e906879a89c8faf149d3e9b7773b483149620f124efc9a794978590918427e9eb03a5c9e5274f41c280d2dee52335328bdefbd9cc03df19 |
Analysis: behavioral2
Detonation Overview
Submitted
2022-01-24 01:26
Reported
2022-01-24 06:59
Platform
win10-en-20211208
Max time kernel
169s
Max time network
168s
Command Line
Signatures
Sodin,Sodinokibi,REvil
Modifies Installed Components in the registry
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\ApproveConvertFrom.tiff => \??\c:\users\admin\pictures\ApproveConvertFrom.tiff.oeyq480 | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\DenyReset.tif => \??\c:\users\admin\pictures\DenyReset.tif.oeyq480 | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ConvertGroup.tif => \??\c:\users\admin\pictures\ConvertGroup.tif.oeyq480 | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\WriteMeasure.raw => \??\c:\users\admin\pictures\WriteMeasure.raw.oeyq480 | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| File opened for modification | \??\c:\users\admin\pictures\ApproveConvertFrom.tiff | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Z5egGonjst = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe" | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
Drops desktop.ini file(s)
Enumerates connected drives
Drops file in Program Files directory
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\rescache\_merged\2717123927\1253081315.pri | C:\Windows\explorer.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\WerFault.exe |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance | C:\Windows\explorer.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000_Classes\Local Settings | C:\Windows\explorer.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell | C:\Windows\explorer.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU | C:\Windows\explorer.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 | C:\Windows\explorer.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff | C:\Windows\explorer.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeAuditPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\WerFault.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\explorer.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\explorer.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
| N/A | N/A | C:\Windows\explorer.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1352 wrote to memory of 1268 | N/A | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 1352 wrote to memory of 1268 | N/A | C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe
"C:\Users\Admin\AppData\Local\Temp\a28e23ad4033341694551d6f59737138de9f1997384da5ae9a1642cc8c9e237f.exe"
C:\Windows\system32\wbem\unsecapp.exe
C:\Windows\system32\wbem\unsecapp.exe -Embedding
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 3040 -s 6924
C:\Windows\explorer.exe
explorer.exe
Network
| Country | Destination | Domain | Proto |
| NL | 52.109.88.44:443 | tcp |
Files
memory/1268-122-0x000001DFA9620000-0x000001DFA9642000-memory.dmp
memory/1268-125-0x000001DFC19A0000-0x000001DFC1A16000-memory.dmp
memory/1268-137-0x000001DFA9680000-0x000001DFC1820000-memory.dmp
C:\ProgramData\Microsoft\Windows\Caches\{DDF571F2-BE98-426D-8288-1A9A39C3FDA2}.2.ver0x0000000000000001.db.oeyq480
| MD5 | 7e5ee4e6d6e1a9a317454dcb8366e202 |
| SHA1 | 63f13e6313d162649077cf5eebc4a3183011724e |
| SHA256 | ca1b136c9b6971c1579bc9876c9b4b144663856d7ecc98bf5affbf6d0cbbf4c2 |
| SHA512 | a4dc5b365f5794107ad52f4073c37e6c07653e91d7b40260f9a11864029ef3a98a71858621167677c55766cecc20b32a0c542845e548c2db11039e9152360019 |
C:\ProgramData\Microsoft\Windows\Caches\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0000000000000001.db.oeyq480
| MD5 | 03e41e561f637351e0a9cdb71e55fcaa |
| SHA1 | c567f108dd787b91c473217cf7ebb42b0b415078 |
| SHA256 | 2f2acc75e217432d44e4c2ef910b43c9aed1e61db238ffe1c0e038ea67742498 |
| SHA512 | f8d27c2f3265338f837492f95adc59e237898277110e493e7bd53d5a10cef510975ef6dca7b75e1d3f5f34899f824f4593067cd25a1b13c16f8f5ebb9f617294 |