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
13/05/2024, 10:42
Static task
static1
Behavioral task
behavioral1
Sample
b32e0df3fa714e1e8b3a2faa643d2740_NeikiAnalytics.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
b32e0df3fa714e1e8b3a2faa643d2740_NeikiAnalytics.exe
Resource
win10v2004-20240508-en
General
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Target
b32e0df3fa714e1e8b3a2faa643d2740_NeikiAnalytics.exe
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Size
66KB
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MD5
b32e0df3fa714e1e8b3a2faa643d2740
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SHA1
330f3f5579808078119738a5f17a35758632cd75
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SHA256
24b67fc502ac7d9e25286a72a073b67b867bfe45fbaee0adb2ef71bcfb0f9b12
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SHA512
0f8c06ee2f261a1277889256cf803c05566056127bbc0bc582c2221aed2c96b734231cb06566c174fc1a0facfaaf2702f7858f31a734aae5e4a2684ef0512207
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SSDEEP
768:jIUo+nlbMnDtmJf5t063Dt103lJ2zD9yIvo3UHQ:jKIZaQT26zt103lJ2v93oEHQ
Malware Config
Signatures
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description 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 -
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\{4256524B-4950-5453-4256-524B49505453} rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4256524B-4950-5453-4256-524B49505453}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" rmass.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4256524B-4950-5453-4256-524B49505453}\IsInstalled = "1" rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4256524B-4950-5453-4256-524B49505453}\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 2660 rmass.exe 668 rmass.exe -
resource yara_rule behavioral2/files/0x0008000000022f51-2.dat upx behavioral2/memory/2660-5-0x0000000000400000-0x0000000000412000-memory.dmp upx behavioral2/memory/668-15-0x0000000000400000-0x0000000000412000-memory.dmp upx behavioral2/memory/2660-49-0x0000000000400000-0x0000000000412000-memory.dmp upx -
description 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
description 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
description ioc Process 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 b32e0df3fa714e1e8b3a2faa643d2740_NeikiAnalytics.exe File opened for modification C:\Windows\SysWOW64\ntdbg.exe rmass.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\winrnt.exe rmass.exe File opened for modification C:\Windows\SysWOW64\aset32.exe rmass.exe File created C:\Windows\SysWOW64\rmass.exe b32e0df3fa714e1e8b3a2faa643d2740_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\ahuy.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\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 8 IoCs
pid Process 2660 rmass.exe 2660 rmass.exe 2660 rmass.exe 2660 rmass.exe 2660 rmass.exe 2660 rmass.exe 668 rmass.exe 668 rmass.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2660 rmass.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3940 wrote to memory of 2660 3940 b32e0df3fa714e1e8b3a2faa643d2740_NeikiAnalytics.exe 82 PID 3940 wrote to memory of 2660 3940 b32e0df3fa714e1e8b3a2faa643d2740_NeikiAnalytics.exe 82 PID 3940 wrote to memory of 2660 3940 b32e0df3fa714e1e8b3a2faa643d2740_NeikiAnalytics.exe 82 PID 2660 wrote to memory of 608 2660 rmass.exe 5 PID 2660 wrote to memory of 3488 2660 rmass.exe 56 PID 2660 wrote to memory of 668 2660 rmass.exe 83 PID 2660 wrote to memory of 668 2660 rmass.exe 83 PID 2660 wrote to memory of 668 2660 rmass.exe 83
Processes
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C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:608
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3488
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C:\Users\Admin\AppData\Local\Temp\b32e0df3fa714e1e8b3a2faa643d2740_NeikiAnalytics.exe"C:\Users\Admin\AppData\Local\Temp\b32e0df3fa714e1e8b3a2faa643d2740_NeikiAnalytics.exe"2⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3940 -
C:\Windows\SysWOW64\rmass.exe"C:\Windows\SysWOW64\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:2660 -
C:\Windows\SysWOW64\rmass.exe--k33p4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:668
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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
MD57eb8a393395cb09c8494b428636a4446
SHA1c070f30256d8ca50995101022e51979858df82a0
SHA256829488613595f3e57a054137bf2b8e45da990a32b43e54ccc3716c21f0c98661
SHA5125b2e7268cf45d6179a1960efd211b1d7363698b90450f1b6a5af90ce8cbc319e858731cd4a38a282f598a3d070363c832dc81b2dde9e50b11385b57f7befd1f4
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Filesize
67KB
MD5f92b9d5ece14a67537613c59441a425b
SHA1ad269cd1ad47e357398013522dc16e48e5e5f4ef
SHA2565cacc6679c66dfdd073c7f7ca4a580c109521cdeed6ea0d4abf04f0a735ffc07
SHA5123df0dced88901575dad83a4facfcb71565ac1f7ba6784bf2ad254c11f3b1ba7b8aee16fd3eccac98ef73d785ef3dc670f1c901d3758f4116635904e2c4655bfa
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Filesize
64KB
MD543932c7bf6c84edaea5dd19bdd3d6c63
SHA15be14c725e4370c45661b76ed52b4ab667c4e76d
SHA256799ba7eb728a93b09a019b05b949f521b9bc40202ecce71571ffd42cec5a7467
SHA51289411d0062244711a408edb2de31386a72607c6b524ea6d438071218842005b74f69a8116804b3009106aed85c0148cfd088af6391abf2365f344b097be9e4e8
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Filesize
1KB
MD56f47b62de25d1745e296a06b3f98ed19
SHA1a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f
SHA25615c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4
SHA512dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7