Analysis
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max time kernel
149s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-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\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 Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "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\{554F5448-4350-4851-554F-544843504851}\StubPath = "C:\\Windows\\system32\\ahuy.exe" rmass.exe Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{554F5448-4350-4851-554F-544843504851} rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{554F5448-4350-4851-554F-544843504851}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" rmass.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{554F5448-4350-4851-554F-544843504851}\IsInstalled = "1" 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 1244 rmass.exe 2924 rmass.exe -
Loads dropped DLL 3 IoCs
Processes:
5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exermass.exepid process 3056 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe 3056 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe 1244 rmass.exe -
Processes:
resource yara_rule behavioral1/memory/3056-5-0x00000000003B0000-0x00000000003C2000-memory.dmp upx behavioral1/memory/3056-4-0x0000000000400000-0x0000000000412000-memory.dmp upx \Windows\SysWOW64\rmass.exe upx behavioral1/memory/2924-25-0x0000000000400000-0x0000000000412000-memory.dmp upx behavioral1/memory/1244-23-0x0000000000400000-0x0000000000412000-memory.dmp upx behavioral1/memory/1244-95-0x0000000000400000-0x0000000000412000-memory.dmp upx -
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 -
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 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\winrnt.exe rmass.exe File opened for modification C:\Windows\SysWOW64\idbg32.exe rmass.exe File opened for modification C:\Windows\SysWOW64\rmass.exe 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe File opened for modification C:\Windows\SysWOW64\ntdbg.exe rmass.exe File created C:\Windows\SysWOW64\ntdbg.exe rmass.exe File created C:\Windows\SysWOW64\ahuy.exe rmass.exe File opened for modification C:\Windows\SysWOW64\rmass.exe rmass.exe File created C:\Windows\SysWOW64\rmass.exe 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe File opened for modification C:\Windows\SysWOW64\ahuy.exe rmass.exe File opened for modification C:\Windows\SysWOW64\aset32.exe rmass.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\winrnt.exe rmass.exe File opened for modification C:\Program Files (x86)\Common Files\System\aset32.exe rmass.exe File opened for modification C:\Program Files (x86)\Common Files\System\idbg32.exe rmass.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
rmass.exermass.exepid process 1244 rmass.exe 1244 rmass.exe 1244 rmass.exe 2924 rmass.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exermass.exedescription pid process Token: SeDebugPrivilege 3056 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe Token: SeDebugPrivilege 1244 rmass.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exermass.exedescription pid process target process PID 3056 wrote to memory of 1244 3056 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe rmass.exe PID 3056 wrote to memory of 1244 3056 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe rmass.exe PID 3056 wrote to memory of 1244 3056 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe rmass.exe PID 3056 wrote to memory of 1244 3056 5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe rmass.exe PID 1244 wrote to memory of 432 1244 rmass.exe winlogon.exe PID 1244 wrote to memory of 1204 1244 rmass.exe Explorer.EXE PID 1244 wrote to memory of 2924 1244 rmass.exe rmass.exe PID 1244 wrote to memory of 2924 1244 rmass.exe rmass.exe PID 1244 wrote to memory of 2924 1244 rmass.exe rmass.exe PID 1244 wrote to memory of 2924 1244 rmass.exe rmass.exe
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:432
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1204
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C:\Users\Admin\AppData\Local\Temp\5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe"C:\Users\Admin\AppData\Local\Temp\5a0b1ca0a74286cf307c6545461e1ef0_NeikiAnalytics.exe"2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3056 -
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
- Loads dropped DLL
- 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:1244 -
C:\Windows\SysWOW64\rmass.exe--k33p4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2924
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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
MD571d288a211f25dfb38d335a37a59f7e1
SHA12b2ad25ecd8f3eadbe31226f1f7906515c676377
SHA256927b2b78ffe9c98b50e52a57a33118f9ee2142afc448b0013cc01ae4e984f963
SHA512f4a6b77cb2c7fd1817b4745a232afe06ef52f1f799bcd81c22a988b4c448ca9792a19c1049f8a709f64b5c1a091e7d8f0bc48a669e91631dbf93097cef43ab28
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Filesize
67KB
MD54be7d0618cadcdd93baba5346b06d546
SHA14090018a5d546be1740bb323f9e2db410c31fc42
SHA2563a64dd84c88d97df84b2c03d558e81efcc5f3de6aca9162c40213011bb42a842
SHA512eb00c06df38e4f6a7d922b6e6edc90ca35598b3ffb96ff3c4d6c36bb971a14f75aeba57112e2fc7c12fe3d836e4532b21ab2368d72d770d5aa49711dda24326f
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Filesize
1KB
MD5b10b13206b0f2cf3968050072f6979bf
SHA1699db21ba9cecf3f13ac3d76e22cfa41aa94da80
SHA2560eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4
SHA512d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d
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Filesize
64KB
MD55a0b1ca0a74286cf307c6545461e1ef0
SHA1bcb49e28a0ca0907d62dec4916aff7bc87b2df76
SHA2564b42379a0bfb6224437f65b651539ff61408eaa5444bd63936951c35e286f53c
SHA5128291a8bb03674956f16f8286912de3a62816251e8cd85d5b6173bfb6faaece68fa7d6093478cecb9b744712f56f9ffdb42b9fe09b62926fd5667fe630d3a8f1f