Analysis Overview
SHA256
3491a946bea7d927d02ae2a28b1001f40a3058f9ec98266f3dc34d472b746a17
Threat Level: Known bad
The file 3491a946bea7d927d02ae2a28b1001f40a3058f9ec98266f3dc34d472b746a17 was found to be: Known bad.
Malicious Activity Summary
Babuk Locker
Renames multiple (407) files with added filename extension
Renames multiple (1541) files with added filename extension
Deletes shadow copies
Checks computer location settings
Drops startup file
Reads user/profile data of web browsers
Credentials from Password Stores: Windows Credential Manager
Enumerates connected drives
System Location Discovery: System Language Discovery
Unsigned PE
Browser Information Discovery
Enumerates physical storage devices
Modifies registry class
Suspicious use of SetWindowsHookEx
Uses Volume Shadow Copy service COM API
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Interacts with shadow copies
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-24 16:12
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-24 16:12
Reported
2024-07-24 16:16
Platform
win7-20240705-en
Max time kernel
118s
Max time network
120s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Renames multiple (407) files with added filename extension
Credentials from Password Stores: Windows Credential Manager
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\How To Restore Your Files.txt | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.exe | N/A |
Enumerates connected drives
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.exe | N/A |
Interacts with shadow copies
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\vssadmin.exe | N/A |
| N/A | N/A | C:\Windows\system32\vssadmin.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| 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
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.exe
"C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
Network
Files
\Device\HarddiskVolume1\Boot\cs-CZ\How To Restore Your Files.txt
| MD5 | 4696310ca321ce5a34e879b4e8b0611a |
| SHA1 | 89082071a1e6d3379a923ef6a39903cc05dfe495 |
| SHA256 | 1f366b81cfa615b53eb24345d09abee973b2b82778f5f21f8ee31fbe13e7d92a |
| SHA512 | 94bfbe6b23e73435a30c6f1bb94970bf9eaa1d9cea0e38d654e23be28ff3802dbabb3984087784a3a99b12f6517389378f1d4c3016b15b6b05a498293480c7d5 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-24 16:12
Reported
2024-07-24 16:15
Platform
win10v2004-20240709-en
Max time kernel
94s
Max time network
95s
Command Line
Signatures
Babuk Locker
Deletes shadow copies
Renames multiple (1541) files with added filename extension
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.exe | N/A |
Credentials from Password Stores: Windows Credential Manager
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\How To Restore Your Files.txt | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.exe | N/A |
Reads user/profile data of web browsers
Enumerates connected drives
Browser Information Discovery
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.exe | N/A |
Interacts with shadow copies
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\vssadmin.exe | N/A |
| N/A | N/A | C:\Windows\system32\vssadmin.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000_Classes\Local Settings\MuiCache | C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| 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 SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.exe
"C:\Users\Admin\AppData\Local\Temp\30fcff7add11ea6685a233c8ce1fc30abe67044630524a6eb363573a4a9f88b8.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.143.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 147.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 112.245.100.95.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.211.222.173.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
Files
\Device\HarddiskVolume1\Boot\da-DK\How To Restore Your Files.txt
| MD5 | 4696310ca321ce5a34e879b4e8b0611a |
| SHA1 | 89082071a1e6d3379a923ef6a39903cc05dfe495 |
| SHA256 | 1f366b81cfa615b53eb24345d09abee973b2b82778f5f21f8ee31fbe13e7d92a |
| SHA512 | 94bfbe6b23e73435a30c6f1bb94970bf9eaa1d9cea0e38d654e23be28ff3802dbabb3984087784a3a99b12f6517389378f1d4c3016b15b6b05a498293480c7d5 |
C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\StartUnifiedTileModelCache.dat
| MD5 | 9529dd2edc12daa0053af1c53b9fa8dd |
| SHA1 | 427cc4600ddb4a417f6373a7e41b1e59310f847d |
| SHA256 | 17711c2306ee8b05fd4dfae2455502eb08d8a0dac9a91484fa86e37fbeadf55f |
| SHA512 | 853f60edc353c4dadfc1aa60d2411f3f36667e96bb91215a7be22cac62bf574dfac35162958a4b599d9501d3516016d25e39949078432107ea7658ee3001682c |
C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\StartUnifiedTileModelCache.dat
| MD5 | 3c8e8e7798495fd4134c49c66f8ee416 |
| SHA1 | 7c8588716f67c8bae2cd909ad7e2567c66157834 |
| SHA256 | 7767f4f12d984d245d36995afc11a68100719b01414f903ad5f63d8c918e140e |
| SHA512 | 47704b2b545c1572cd15bd1f49391dd88cbf23b779def330e70ad37635e47fe4f2dc3091d081e9778d8bbd38e2bcc14dfa5c47ba37b00b87f719fbec9f95211a |