Analysis Overview
SHA256
c69c2902135acc0c8511418682b3d0685c5b29f9ef2312d4775f25260bfbbc0d
Threat Level: Shows suspicious behavior
The file b076bcb501485446eb9cdb450e4714a6.bin was found to be: Shows suspicious behavior.
Malicious Activity Summary
ASPack v2.12-2.42
Modifies WinLogon
Drops file in Windows directory
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-05 02:35
Signatures
ASPack v2.12-2.42
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-05 02:35
Reported
2024-03-05 02:38
Platform
win7-20240221-en
Max time kernel
118s
Max time network
119s
Command Line
Signatures
Modifies WinLogon
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\BITS | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\BITS | C:\Windows\SysWOW64\rundll32.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\259394858.dat | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File created | C:\Windows\259394905.dat | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File created | C:\Windows\259394952.dat | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File created | C:\Windows\help\nishiernai.dll | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened for modification | C:\Windows\help\nishiernai.dll | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2904 wrote to memory of 2964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2904 wrote to memory of 2964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2904 wrote to memory of 2964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2904 wrote to memory of 2964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2904 wrote to memory of 2964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2904 wrote to memory of 2964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2904 wrote to memory of 2964 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2964 wrote to memory of 436 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\system32\winlogon.exe |
Processes
C:\Windows\system32\winlogon.exe
winlogon.exe
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b076bcb501485446eb9cdb450e4714a6.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b076bcb501485446eb9cdb450e4714a6.dll,#1
Network
Files
memory/2964-0-0x0000000000160000-0x00000000001DE000-memory.dmp
memory/2964-1-0x0000000000160000-0x00000000001DE000-memory.dmp
memory/2964-2-0x00000000004D0000-0x000000000054E000-memory.dmp
memory/2964-3-0x00000000004D0000-0x000000000054E000-memory.dmp
memory/2964-4-0x0000000001E70000-0x0000000001ECB000-memory.dmp
memory/2964-5-0x0000000000170000-0x0000000000171000-memory.dmp
memory/2964-6-0x0000000000180000-0x0000000000181000-memory.dmp
memory/2964-9-0x0000000002410000-0x0000000002411000-memory.dmp
memory/2964-8-0x00000000024C0000-0x00000000024C1000-memory.dmp
memory/2964-7-0x0000000001ED0000-0x0000000001ED1000-memory.dmp
memory/2964-10-0x0000000003190000-0x0000000003191000-memory.dmp
memory/2964-16-0x0000000003140000-0x0000000003142000-memory.dmp
memory/2964-15-0x0000000003300000-0x0000000003301000-memory.dmp
memory/2964-14-0x0000000003310000-0x0000000003311000-memory.dmp
memory/2964-13-0x00000000031A0000-0x00000000031A1000-memory.dmp
memory/2964-12-0x00000000031B0000-0x00000000031B1000-memory.dmp
memory/2964-11-0x0000000002570000-0x0000000002571000-memory.dmp
memory/436-18-0x000000007FFF0000-0x000000007FFF1000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-05 02:35
Reported
2024-03-05 02:38
Platform
win10v2004-20240226-en
Max time kernel
147s
Max time network
154s
Command Line
Signatures
Modifies WinLogon
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\BITS | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\BITS | C:\Windows\SysWOW64\rundll32.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\240634203.dat | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File created | C:\Windows\240634390.dat | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File created | C:\Windows\240634640.dat | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File created | C:\Windows\help\nishiernai.dll | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened for modification | C:\Windows\help\nishiernai.dll | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3568 wrote to memory of 2320 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3568 wrote to memory of 2320 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3568 wrote to memory of 2320 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2320 wrote to memory of 584 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\system32\winlogon.exe |
Processes
C:\Windows\system32\winlogon.exe
winlogon.exe
C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b076bcb501485446eb9cdb450e4714a6.dll,#1
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b076bcb501485446eb9cdb450e4714a6.dll,#1
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 75.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 7.173.189.20.in-addr.arpa | udp |
Files
memory/2320-0-0x0000000000400000-0x000000000047E000-memory.dmp
memory/2320-1-0x0000000002610000-0x000000000266B000-memory.dmp
memory/2320-2-0x0000000002880000-0x0000000002881000-memory.dmp
memory/2320-4-0x0000000002850000-0x0000000002851000-memory.dmp
memory/2320-3-0x0000000002870000-0x0000000002871000-memory.dmp
memory/2320-7-0x0000000002810000-0x0000000002811000-memory.dmp
memory/2320-5-0x0000000002830000-0x0000000002831000-memory.dmp
memory/2320-6-0x00000000027F0000-0x00000000027F1000-memory.dmp
memory/2320-8-0x0000000003680000-0x0000000003681000-memory.dmp
memory/2320-9-0x0000000003670000-0x0000000003672000-memory.dmp
memory/2320-10-0x00000000036C0000-0x00000000036C1000-memory.dmp
memory/2320-11-0x00000000027E0000-0x00000000027E1000-memory.dmp
memory/2320-12-0x0000000002890000-0x0000000002891000-memory.dmp
memory/2320-13-0x0000000000AF0000-0x0000000000AF1000-memory.dmp
memory/2320-14-0x0000000000B00000-0x0000000000B01000-memory.dmp
memory/2320-15-0x0000000003690000-0x0000000003691000-memory.dmp
memory/2320-16-0x00000000029F0000-0x00000000029F1000-memory.dmp
memory/2320-17-0x0000000002940000-0x0000000002941000-memory.dmp
memory/2320-18-0x0000000002AA0000-0x0000000002AA1000-memory.dmp
memory/2320-19-0x00000000036E0000-0x00000000036E1000-memory.dmp
memory/2320-20-0x00000000036D0000-0x00000000036D1000-memory.dmp
memory/2320-21-0x0000000003840000-0x0000000003841000-memory.dmp
memory/2320-22-0x0000000003830000-0x0000000003831000-memory.dmp
memory/2320-23-0x0000000003870000-0x0000000003871000-memory.dmp
memory/2320-24-0x00000000038A0000-0x00000000038A1000-memory.dmp
memory/2320-25-0x0000000003A60000-0x0000000003A61000-memory.dmp
memory/2320-26-0x0000000003A90000-0x0000000003A91000-memory.dmp
memory/2320-27-0x0000000003A80000-0x0000000003A81000-memory.dmp
memory/2320-28-0x0000000003DF0000-0x0000000003DF1000-memory.dmp
memory/2320-29-0x0000000003DE0000-0x0000000003DE1000-memory.dmp
memory/2320-30-0x0000000003E90000-0x0000000003E91000-memory.dmp
memory/2320-31-0x0000000003890000-0x0000000003891000-memory.dmp
memory/2320-32-0x00000000038B0000-0x00000000038B1000-memory.dmp
memory/2320-33-0x0000000003A70000-0x0000000003A71000-memory.dmp
memory/2320-34-0x0000000003EA0000-0x0000000003EA1000-memory.dmp
memory/2320-35-0x0000000003EC0000-0x0000000003EC1000-memory.dmp
memory/2320-36-0x0000000003EB0000-0x0000000003EB1000-memory.dmp
memory/2320-38-0x0000000003EE0000-0x0000000003EE1000-memory.dmp
memory/2320-39-0x0000000003ED0000-0x0000000003ED1000-memory.dmp
memory/2320-40-0x0000000003F10000-0x0000000003F11000-memory.dmp
memory/2320-41-0x0000000004030000-0x0000000004031000-memory.dmp
memory/2320-42-0x0000000004050000-0x0000000004051000-memory.dmp
memory/2320-43-0x0000000004080000-0x0000000004081000-memory.dmp
memory/2320-44-0x0000000004090000-0x0000000004091000-memory.dmp
memory/2320-45-0x0000000004040000-0x0000000004041000-memory.dmp