Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system - submitted
07/06/2024, 05:06
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
39f31a7f6c14908a7e399a2cdac0ce00_NeikiAnalytics.exe
Resource
win7-20240221-en
windows7-x64
14 signatures
150 seconds
Behavioral task
behavioral2
Sample
39f31a7f6c14908a7e399a2cdac0ce00_NeikiAnalytics.exe
Resource
win10v2004-20240508-en
windows10-2004-x64
13 signatures
150 seconds
General
- Target 39f31a7f6c14908a7e399a2cdac0ce00_NeikiAnalytics.exe
- Size 66KB
- Sample240607-frh7eaaa7s
- SHA256 f3d1dd861891717c7034c6c82400d7ab958babde393e1b7b3e338c98d18cca25
- MD5 39f31a7f6c14908a7e399a2cdac0ce00
- SHA1 00af4915705498919bebbae4fcc4847649ab749d
- SHA512 31e6c9d91135f19eb0491a6f952659899d1f1b429b1d12241f8f3ac6f6e812697e586e79333fd987a65525e0372b249116d1a0c5bf8257e8f6fb8132fc914ddd
- SSDEEP 1536:j7y81Emoo1UycfMYhc91Lf3mDYQKTh2NTIcanONlKwS:LEmoEUyEMYhc9dmDYQKTcNcca2In
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
-
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 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 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 - 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 952 rmass.exe 444 rmass.exe -
resource yara_rule behavioral2/files/0x0008000000022f51-4.dat upx behavioral2/memory/952-5-0x0000000000400000-0x0000000000412000-memory.dmp upx behavioral2/memory/444-11-0x0000000000400000-0x0000000000412000-memory.dmp upx behavioral2/memory/952-49-0x0000000000400000-0x0000000000412000-memory.dmp upx -
description ioc Process 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 Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "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}\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 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 - Drops file in System32 directory 12 IoCs
description ioc Process File created C:\Windows\SysWOW64\rmass.exe 39f31a7f6c14908a7e399a2cdac0ce00_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\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 39f31a7f6c14908a7e399a2cdac0ce00_NeikiAnalytics.exe File opened for modification C:\Windows\SysWOW64\ahuy.exe rmass.exe File opened for modification C:\Windows\SysWOW64\winrnt.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 952 rmass.exe 952 rmass.exe 952 rmass.exe 952 rmass.exe 952 rmass.exe 952 rmass.exe 444 rmass.exe 444 rmass.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 952 rmass.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3104 wrote to memory of 952 3104 39f31a7f6c14908a7e399a2cdac0ce00_NeikiAnalytics.exe 84 PID 3104 wrote to memory of 952 3104 39f31a7f6c14908a7e399a2cdac0ce00_NeikiAnalytics.exe 84 PID 3104 wrote to memory of 952 3104 39f31a7f6c14908a7e399a2cdac0ce00_NeikiAnalytics.exe 84 PID 952 wrote to memory of 444 952 rmass.exe 85 PID 952 wrote to memory of 444 952 rmass.exe 85 PID 952 wrote to memory of 444 952 rmass.exe 85 PID 952 wrote to memory of 628 952 rmass.exe 5 PID 952 wrote to memory of 3420 952 rmass.exe 56
Processes
-
C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:628
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3420
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C:\Users\Admin\AppData\Local\Temp\39f31a7f6c14908a7e399a2cdac0ce00_NeikiAnalytics.exe"C:\Users\Admin\AppData\Local\Temp\39f31a7f6c14908a7e399a2cdac0ce00_NeikiAnalytics.exe"2⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3104 -
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:952 -
C:\Windows\SysWOW64\rmass.exe--k33p4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:444
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\RECOVER32.DLL
- Size 5KB
- SHA256 9e00af53b1d0c0f5270d94a666d95aa7b4dcb9fea49487c210c055c9dcfcc9eb
- MD5 2b2c28a7a01f9584fe220ef84003427f
- SHA1 5fc023df0b5064045eb8de7f2dbe26f07f6fec70
- SHA512 39192a8a91dec1abff25af8dac0cf39da4dfd51b3fb4f1ef0b4e776185d4280fbe8387c2ea778da7bbf2ce288b0bce4d23cbe8d9e87bbd250159044f5adbac78
- SSDEEP 48:6CsrGV5e2/WJbm73k2vZcsrkqSq2cxc2G5ZwJOFl:SqV5Roa73kQ/kqqAD
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\SysWOW64\ahuy.exe
- Size 66KB
- SHA256 8bf40b2a0613ec7e636ad3070904bf494faae15b7c61ce61c0ce80111024d2a7
- MD5 43d1d69ddbf759641f68a5ffb2759178
- SHA1 62b4b68c9a3a708f113269fb0e00a0795170f684
- SHA512 a6a235e7cc43557afa7e48b8c3e9ae0d2dc9a58e3e348bec7d9af12abdb03b3bcf8cf81c74c5f57d8c9409c95393effac2e6d4b10ec365155163af916feec0ff
- SSDEEP 768:jIUtpEYsglyg5KtgxYR9HuKyqXJcanMqnnypTZ+Nj/2AxY0:jX1lygwgxXKyq5cqlnyp9+Nj/w0
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\SysWOW64\ntdbg.exe
- Size 67KB
- SHA256 d769cce16b52d4eccf94819e45f9b93bf4b1f8495ad03da799263f4b03929485
- MD5 59d95ae700f51bff64885f58c6b29c93
- SHA1 58996cebef80e7ba785cb51563406888c9ed3926
- SHA512 091cf11109d35126badc96fabeaf24bededc96d566385cea36a193af37a8406d36ce9537be021075188e12f01c2701a4e6c841968034fd6b3044b45319eda89b
- SSDEEP 1536:EbCNs+UYWEkyFvFL6qJGykyj4BFfj49iTf:KC7UYWEpFeKGyd4/j4g
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\SysWOW64\rmass.exe
- Size 64KB
- SHA256 5b7e0924a7603aa073c77f9b512883114054c682d69460d6da894286972935d2
- MD5 e334bb7b486274bcabc5c081ffe0114c
- SHA1 a1f98073bb714806886502a9196e49ea831331c2
- SHA512 60a988a3b2db89875663e0bbef4e302a605f3e5ae93047cf1f0fae55b0cfd3be7c3f3611874a41b96194226fdb455a718b9410316755a6f34c5f2029168222fe
- SSDEEP 768:rAUJmQCcmLCXQq6fsKiJYsIkjJVzqsVG5kuGKQLddOW/O4Wv9041/:sUNHFKQbIkHvGMdOh40041/
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\System32\drivers\etc\hosts
- Size 1KB
- SHA256 15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4
- MD5 6f47b62de25d1745e296a06b3f98ed19
- SHA1 a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f
- SHA512 dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7
- MD5 SHA1 SHA512