Analysis
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max time kernel
149s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-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\{5549424E-514e-4d41-5549-424E514E4d41} rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5549424E-514e-4d41-5549-424E514E4d41}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" rmass.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5549424E-514e-4d41-5549-424E514E4d41}\IsInstalled = "1" rmass.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5549424E-514e-4d41-5549-424E514E4d41}\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 2268 rmass.exe 2108 rmass.exe -
Loads dropped DLL 3 IoCs
pid Process 1148 b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe 1148 b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe 2268 rmass.exe -
resource yara_rule behavioral1/memory/1148-0-0x0000000000400000-0x0000000000411000-memory.dmp upx behavioral1/files/0x000b0000000122ee-4.dat upx behavioral1/memory/2108-28-0x0000000000400000-0x0000000000411000-memory.dmp upx behavioral1/memory/2268-27-0x00000000002B0000-0x00000000002C1000-memory.dmp upx behavioral1/memory/2268-20-0x0000000000400000-0x0000000000411000-memory.dmp upx behavioral1/memory/1148-14-0x0000000000400000-0x0000000000411000-memory.dmp upx behavioral1/memory/1148-5-0x0000000000320000-0x0000000000331000-memory.dmp upx behavioral1/memory/2268-62-0x0000000000400000-0x0000000000411000-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 created C:\Windows\SysWOW64\ntdbg.exe rmass.exe File created C:\Windows\SysWOW64\ahuy.exe rmass.exe File created C:\Windows\SysWOW64\RECOVER32.DLL rmass.exe File opened for modification 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\idbg32.exe rmass.exe File opened for modification C:\Windows\SysWOW64\rmass.exe b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe File created C:\Windows\SysWOW64\rmass.exe b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe File opened for modification C:\Windows\SysWOW64\ntdbg.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\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 4 IoCs
pid Process 2268 rmass.exe 2268 rmass.exe 2268 rmass.exe 2108 rmass.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1148 b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe Token: SeDebugPrivilege 2268 rmass.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 1148 wrote to memory of 2268 1148 b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe 28 PID 1148 wrote to memory of 2268 1148 b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe 28 PID 1148 wrote to memory of 2268 1148 b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe 28 PID 1148 wrote to memory of 2268 1148 b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe 28 PID 2268 wrote to memory of 432 2268 rmass.exe 5 PID 2268 wrote to memory of 1208 2268 rmass.exe 21 PID 2268 wrote to memory of 2108 2268 rmass.exe 29 PID 2268 wrote to memory of 2108 2268 rmass.exe 29 PID 2268 wrote to memory of 2108 2268 rmass.exe 29 PID 2268 wrote to memory of 2108 2268 rmass.exe 29
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:1208
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C:\Users\Admin\AppData\Local\Temp\b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe"C:\Users\Admin\AppData\Local\Temp\b32abd5ae48244ad9afe7d3ee95f0d20_NeikiAnalytics.exe"2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1148 -
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:2268 -
C:\Windows\SysWOW64\rmass.exe--k33p4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2108
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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
MD5806c372b45f665e6a07c2b2d49e6c122
SHA13ff95c485868c21155c5c5d645a7582ef584e3e9
SHA256de5c1c4e1d4632f2b96fc8fca745896e07dee8758d369b0236d37ab384e48fd8
SHA5122738f4d04caaf1feba7c885e271ecadbb0e30707883795e276ddc9b108228ed6910b28c08c7ce30c76dc5db365e541af3c7debe3f80f7671a3be934366810927
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Filesize
24KB
MD580ac6191cff6452e552771051f83e25b
SHA11e827ac7e94736f6702b2e559eced2b8c30bef8f
SHA2560f3a4117976b3db8c71adfb5428fe155fe15d0cc4cb40151c3cb60967cbcb5af
SHA512c716617ef949953a00194d2cf7f7736f89cd333c0d4e9dbb9105bc2e8af29afece4bd45e839815162263932b2711888a24fed1e286ccfc08af40958db1183c6c
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Filesize
1KB
MD5b10b13206b0f2cf3968050072f6979bf
SHA1699db21ba9cecf3f13ac3d76e22cfa41aa94da80
SHA2560eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4
SHA512d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d
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Filesize
21KB
MD5b32abd5ae48244ad9afe7d3ee95f0d20
SHA11765587f4cf7d5c013783f4dd95b2a23ab16176b
SHA2567f82ba728960560e827a8cc410ee9261107e2c091f0915e7767d6b03ed6c43fa
SHA512d931e31bd716672ac0a063f2b6fcd03ae8c752db17f670bccf72a30b35234ed6ad1b579e234ba00f71775470e451828cfde4bb0d9d57a1acb5adbe575a737251