Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
13-06-2024 03:15
Behavioral task
behavioral1
Sample
5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe
Resource
win10v2004-20240508-en
General
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Target
5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe
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Size
64KB
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MD5
5a0b1ca0a74286cf307c6545461e1ef0
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SHA1
bcb49e28a0ca0907d62dec4916aff7bc87b2df76
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SHA256
4b42379a0bfb6224437f65b651539ff61408eaa5444bd63936951c35e286f53c
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SHA512
8291a8bb03674956f16f8286912de3a62816251e8cd85d5b6173bfb6faaece68fa7d6093478cecb9b744712f56f9ffdb42b9fe09b62926fd5667fe630d3a8f1f
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SSDEEP
768:vAUJmQCcmLCXQq6fsKiJYsIkjJVzqsVG5kuGKQLddOW/24WvgMb7rQ+aO:YUNHFKQbIkHvGMdOp4Zu7MnO
Malware Config
Signatures
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Processes:
rmass.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "5120" rmass.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "5120" rmass.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "5120" rmass.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "5120" rmass.exe -
Drops file in Drivers directory 1 IoCs
Processes:
rmass.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts rmass.exe -
Modifies Installed Components in the registry 2 TTPs 4 IoCs
Processes:
rmass.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" rmass.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55}\IsInstalled = "1" rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55}\StubPath = "C:\\Windows\\system32\\ahuy.exe" rmass.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55} rmass.exe -
Sets file execution options in registry 2 TTPs 3 IoCs
Processes:
rmass.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a" rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ntdbg.exe" rmass.exe -
Executes dropped EXE 2 IoCs
Processes:
rmass.exermass.exepid process 4972 rmass.exe 2808 rmass.exe -
Processes:
resource yara_rule behavioral2/memory/1020-0-0x0000000000400000-0x0000000000412000-memory.dmp upx behavioral2/memory/1020-8-0x0000000000400000-0x0000000000412000-memory.dmp upx C:\Windows\SysWOW64\rmass.exe upx behavioral2/memory/2808-17-0x0000000000400000-0x0000000000412000-memory.dmp upx behavioral2/memory/4972-51-0x0000000000400000-0x0000000000412000-memory.dmp upx -
Processes:
rmass.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "5120" rmass.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "5120" rmass.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "5120" rmass.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "5120" rmass.exe -
Modifies WinLogon 2 TTPs 5 IoCs
Processes:
rmass.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B} rmass.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a" rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\RECOVER32.DLL" rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup" rmass.exe -
Drops file in System32 directory 12 IoCs
Processes:
rmass.exe5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exedescription ioc process File created C:\Windows\SysWOW64\ntdbg.exe rmass.exe File opened for modification C:\Windows\SysWOW64\ahuy.exe rmass.exe File created C:\Windows\SysWOW64\ahuy.exe rmass.exe File opened for modification C:\Windows\SysWOW64\winrnt.exe rmass.exe File opened for modification C:\Windows\SysWOW64\ntdbg.exe rmass.exe File created C:\Windows\SysWOW64\rmass.exe 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe File opened for modification C:\Windows\SysWOW64\RECOVER32.DLL rmass.exe File created C:\Windows\SysWOW64\RECOVER32.DLL rmass.exe File opened for modification C:\Windows\SysWOW64\aset32.exe rmass.exe File opened for modification C:\Windows\SysWOW64\idbg32.exe rmass.exe File opened for modification C:\Windows\SysWOW64\rmass.exe rmass.exe File opened for modification C:\Windows\SysWOW64\rmass.exe 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe -
Drops file in Program Files directory 3 IoCs
Processes:
rmass.exedescription ioc process File opened for modification C:\Program Files (x86)\Common Files\System\idbg32.exe rmass.exe File opened for modification C:\Program Files (x86)\Common Files\System\winrnt.exe rmass.exe File opened for modification C:\Program Files (x86)\Common Files\System\aset32.exe rmass.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
rmass.exermass.exepid process 4972 rmass.exe 4972 rmass.exe 4972 rmass.exe 4972 rmass.exe 4972 rmass.exe 4972 rmass.exe 2808 rmass.exe 2808 rmass.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exermass.exedescription pid process Token: SeDebugPrivilege 1020 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe Token: SeDebugPrivilege 4972 rmass.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exermass.exedescription pid process target process PID 1020 wrote to memory of 4972 1020 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe rmass.exe PID 1020 wrote to memory of 4972 1020 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe rmass.exe PID 1020 wrote to memory of 4972 1020 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe rmass.exe PID 4972 wrote to memory of 624 4972 rmass.exe winlogon.exe PID 4972 wrote to memory of 3544 4972 rmass.exe Explorer.EXE PID 4972 wrote to memory of 2808 4972 rmass.exe rmass.exe PID 4972 wrote to memory of 2808 4972 rmass.exe rmass.exe PID 4972 wrote to memory of 2808 4972 rmass.exe rmass.exe
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:624
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3544
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C:\Users\Admin\AppData\Local\Temp\5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe"C:\Users\Admin\AppData\Local\Temp\5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe"2⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1020 -
C:\Windows\SysWOW64\rmass.exe"C:\Windows\system32\rmass.exe"3⤵
- Windows security bypass
- Drops file in Drivers directory
- Modifies Installed Components in the registry
- Sets file execution options in registry
- Executes dropped EXE
- Windows security modification
- Modifies WinLogon
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4972 -
C:\Windows\SysWOW64\rmass.exe--k33p4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2808
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
5KB
MD52b2c28a7a01f9584fe220ef84003427f
SHA15fc023df0b5064045eb8de7f2dbe26f07f6fec70
SHA2569e00af53b1d0c0f5270d94a666d95aa7b4dcb9fea49487c210c055c9dcfcc9eb
SHA51239192a8a91dec1abff25af8dac0cf39da4dfd51b3fb4f1ef0b4e776185d4280fbe8387c2ea778da7bbf2ce288b0bce4d23cbe8d9e87bbd250159044f5adbac78
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Filesize
66KB
MD58ab7e68a04123d3e18e504a3d59a83e1
SHA114efc1c79b7a096bcca83de736d09ec6b742105c
SHA2563fbcfbf468952d4249f3f16dfdc1a6d458458828214910c65806dbaae9081dd2
SHA51291db3641edab1ba062e57d16f94ebb40249360feea9ea0f2c22f20e43eca30a2f7edcecb624f13156c0e014dea97609bfcbaed54ab707c62be2edc4bb8c5441b
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Filesize
67KB
MD57106cd6a431b463c9319e53a2655fb71
SHA13d78544da88d15899c8497cdfc1010701cb5c9b9
SHA256d7536c4741f1eaf9d0ded9b68e7edd52a2f6ef5bb4014b4a2b6f805bda60fb63
SHA51266c199ef82ac594f508adf419e19ce6774f4b1b063cc3d8d8dd5c14ba7b5c81705495653b0cf9c5cbb6f067a318ed4123830ac6ce9a2db96b8f40df46245b5ae
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Filesize
64KB
MD55a0b1ca0a74286cf307c6545461e1ef0
SHA1bcb49e28a0ca0907d62dec4916aff7bc87b2df76
SHA2564b42379a0bfb6224437f65b651539ff61408eaa5444bd63936951c35e286f53c
SHA5128291a8bb03674956f16f8286912de3a62816251e8cd85d5b6173bfb6faaece68fa7d6093478cecb9b744712f56f9ffdb42b9fe09b62926fd5667fe630d3a8f1f
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Filesize
1KB
MD56f47b62de25d1745e296a06b3f98ed19
SHA1a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f
SHA25615c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4
SHA512dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7