Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
13/05/2024, 10:41
Behavioral task
behavioral1
Sample
b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe
Resource
win10v2004-20240426-en
General
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Target
b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe
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Size
21KB
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MD5
b32abd5ae48244ad9afe7d3ee95f0d20
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SHA1
1765587f4cf7d5c013783f4dd95b2a23ab16176b
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SHA256
7f82ba728960560e827a8cc410ee9261107e2c091f0915e7767d6b03ed6c43fa
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SHA512
d931e31bd716672ac0a063f2b6fcd03ae8c752db17f670bccf72a30b35234ed6ad1b579e234ba00f71775470e451828cfde4bb0d9d57a1acb5adbe575a737251
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SSDEEP
384:UBWoC5GDr6wc/w3HgM6vDUTAXBGCVf4WVlFvX8Mb7a6t:rRkiLw3HsDSARGG/MMb7rt
Malware Config
Signatures
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description 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
description ioc Process File opened for modification C:\Windows\system32\drivers\etc\hosts rmass.exe -
Modifies Installed Components in the registry 2 TTPs 4 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{59434C45-5854-414c-5943-4C455854414c} rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{59434C45-5854-414c-5943-4C455854414c}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" rmass.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{59434C45-5854-414c-5943-4C455854414c}\IsInstalled = "1" rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{59434C45-5854-414c-5943-4C455854414c}\StubPath = "C:\\Windows\\system32\\ahuy.exe" rmass.exe -
Sets file execution options in registry 2 TTPs 3 IoCs
description 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
pid Process 4320 rmass.exe 5092 rmass.exe -
resource yara_rule behavioral2/memory/1376-0-0x0000000000400000-0x0000000000411000-memory.dmp upx behavioral2/files/0x0006000000023308-7.dat upx behavioral2/memory/4320-9-0x0000000000400000-0x0000000000411000-memory.dmp upx behavioral2/memory/1376-6-0x0000000000400000-0x0000000000411000-memory.dmp upx behavioral2/memory/5092-19-0x0000000000400000-0x0000000000411000-memory.dmp upx behavioral2/memory/4320-53-0x0000000000400000-0x0000000000411000-memory.dmp upx -
description 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 -
Modifies WinLogon 2 TTPs 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup" rmass.exe 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 -
Drops file in System32 directory 12 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\rmass.exe b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe 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\RECOVER32.DLL rmass.exe File opened for modification C:\Windows\SysWOW64\idbg32.exe rmass.exe File created C:\Windows\SysWOW64\rmass.exe b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe File opened for modification C:\Windows\SysWOW64\ntdbg.exe rmass.exe File created C:\Windows\SysWOW64\ahuy.exe rmass.exe File opened for modification 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\aset32.exe rmass.exe File opened for modification C:\Windows\SysWOW64\rmass.exe rmass.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process 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 File opened for modification C:\Program Files (x86)\Common Files\System\winrnt.exe rmass.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 4320 rmass.exe 4320 rmass.exe 4320 rmass.exe 4320 rmass.exe 4320 rmass.exe 4320 rmass.exe 5092 rmass.exe 5092 rmass.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1376 b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe Token: SeDebugPrivilege 4320 rmass.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1376 wrote to memory of 4320 1376 b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe 83 PID 1376 wrote to memory of 4320 1376 b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe 83 PID 1376 wrote to memory of 4320 1376 b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe 83 PID 4320 wrote to memory of 616 4320 rmass.exe 5 PID 4320 wrote to memory of 3436 4320 rmass.exe 56 PID 4320 wrote to memory of 5092 4320 rmass.exe 84 PID 4320 wrote to memory of 5092 4320 rmass.exe 84 PID 4320 wrote to memory of 5092 4320 rmass.exe 84
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:616
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3436
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C:\Users\Admin\AppData\Local\Temp\b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe"C:\Users\Admin\AppData\Local\Temp\b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe"2⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1376 -
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:4320 -
C:\Windows\SysWOW64\rmass.exe--k33p4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:5092
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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
23KB
MD578a2d7191cfed5e1e9046283638cc1b4
SHA1cbe37d80b6fdf99573af51f264afc7168fec6597
SHA256bdc3d24954a6cfe2e611f17ad0f34f79c11180f0db2ebca107a9666e6cf246b7
SHA5129bfdb4d571951c04105331708b4be71d4e9abfba8793923f3f78943214c9a96f614b0dbaf8da643d7a0660ee74478f60a05f3e1ca05d90a050c8ac97505de545
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Filesize
24KB
MD51b3271619b6caa166c9601df55027928
SHA17681498d8762f479a61ca23670d6acd8078e7870
SHA25699cf6415ed0dec5e9533092141927bfb9e2a243c4111924029585cd2580bd61f
SHA512e449195084fc4ee53ebb909f1ba9d02881c398eaadf7df2f26797d40b3c10039b6decb0f81062c0c1cfc7755f067a579548e8e6baabd17468c0db8177a274179
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Filesize
21KB
MD5b32abd5ae48244ad9afe7d3ee95f0d20
SHA11765587f4cf7d5c013783f4dd95b2a23ab16176b
SHA2567f82ba728960560e827a8cc410ee9261107e2c091f0915e7767d6b03ed6c43fa
SHA512d931e31bd716672ac0a063f2b6fcd03ae8c752db17f670bccf72a30b35234ed6ad1b579e234ba00f71775470e451828cfde4bb0d9d57a1acb5adbe575a737251
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Filesize
1KB
MD56f47b62de25d1745e296a06b3f98ed19
SHA1a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f
SHA25615c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4
SHA512dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7