Analysis Overview
SHA256
250e81eeb4df4649ccb13e271ae3f80d44995b2f8ffca7a2c5e1c738546c2ab1
Threat Level: Known bad
The file bad_rhy_mayb.exe was found to be: Known bad.
Malicious Activity Summary
Detect Rhysida ransomware
Rhysida family
Rhysida
Command and Scripting Interpreter: PowerShell
Drops file in System32 directory
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-02 10:27
Signatures
Detect Rhysida ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Rhysida family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-12-02 10:27
Reported
2024-12-02 10:28
Platform
win7-20240903-en
Max time kernel
50s
Max time network
16s
Command Line
Signatures
Detect Rhysida ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Rhysida
Rhysida family
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2556 wrote to memory of 2356 | N/A | C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe | C:\Windows\system32\WerFault.exe |
| PID 2556 wrote to memory of 2356 | N/A | C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe | C:\Windows\system32\WerFault.exe |
| PID 2556 wrote to memory of 2356 | N/A | C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe | C:\Windows\system32\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe
"C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe"
C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2556 -s 72
Network
Files
memory/2556-0-0x0000000000400000-0x0000000000523000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-12-02 10:27
Reported
2024-12-02 10:28
Platform
win10v2004-20241007-en
Max time kernel
46s
Max time network
38s
Command Line
Signatures
Detect Rhysida ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Rhysida
Rhysida family
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\System32\%AppData%\Microsoft\Windows\Start Menu\Programs\Windows PowerShell\Windows PowerShell.lnk | C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| 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 |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3532 wrote to memory of 3936 | N/A | C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe | C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe |
| PID 3532 wrote to memory of 3936 | N/A | C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe | C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe
"C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe"
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe
"PowerShell.exe" -noexit -command Set-Location -literalPath 'C:\Users\Admin\AppData\Local\Temp'
C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe
"C:\Users\Admin\AppData\Local\Temp\bad_rhy_mayb.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 74.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 197.87.175.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
Files
memory/4744-0-0x0000000000400000-0x0000000000523000-memory.dmp
memory/3532-3-0x00007FF818053000-0x00007FF818055000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yapalzka.tyt.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/3532-13-0x00000210201E0000-0x0000021020202000-memory.dmp
memory/3532-14-0x00007FF818050000-0x00007FF818B11000-memory.dmp
memory/3532-15-0x00007FF818050000-0x00007FF818B11000-memory.dmp
memory/3532-16-0x00000210205A0000-0x00000210205E4000-memory.dmp
memory/3532-17-0x0000021020670000-0x00000210206E6000-memory.dmp
memory/3532-18-0x0000021020630000-0x000002102064E000-memory.dmp
memory/3936-20-0x0000000000400000-0x0000000000523000-memory.dmp
memory/3532-21-0x00007FF818053000-0x00007FF818055000-memory.dmp
memory/3532-22-0x00007FF818050000-0x00007FF818B11000-memory.dmp
memory/3532-25-0x00007FF818050000-0x00007FF818B11000-memory.dmp