b9e97c760983c78eb94c0b197e82e1778bf68e938e2612668135927a52445296

Analysis

max time kernel
149s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
08/06/2024, 12:08

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General

Target
3c01e2c7710bbf04c9ae6d3b2f70bdd0_NeikiAnalytics.exe
Size 66KB
Sample240608-pa4apacd44
SHA256 b9e97c760983c78eb94c0b197e82e1778bf68e938e2612668135927a52445296
MD5 3c01e2c7710bbf04c9ae6d3b2f70bdd0
SHA1 96985ef534630f8619d2f953a528c60c1da45093
SHA512 f12a38e270d9754d14bb9fa06f51720f2fdc0c4d852916ac040466e1455f22ef263ab33e06555d44b56571b3963260a24d590ebfb09acfbc86cecf13a177cdd0
SSDEEP 1536:jZ2grDSAN8ZVeS3R8MkiTAnz19B9xRrSq6ZN7:lVDUZVeS3eMkiTAz1n/tS3ZN7
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

evasion persistence trojan upx

Malware Config

Signatures

Windows security bypass 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55}	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	rmass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55}\IsInstalled = "1"	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55}\StubPath = "C:\\Windows\\system32\\ahuy.exe"	rmass.exe

Sets file execution options in registry 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

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
4920	rmass.exe
3192	rmass.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0005000000023276-2.dat	upx
behavioral2/memory/4920-3-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral2/memory/4920-48-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral2/memory/3192-49-0x0000000000400000-0x0000000000412000-memory.dmp	upx

Windows security modification 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

Modifies WinLogon 2 TTPs 5 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

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\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	3c01e2c7710bbf04c9ae6d3b2f70bdd0_NeikiAnalytics.exe
File created	C:\Windows\SysWOW64\rmass.exe	3c01e2c7710bbf04c9ae6d3b2f70bdd0_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\rmass.exe	rmass.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

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
4920	rmass.exe
4920	rmass.exe
4920	rmass.exe
4920	rmass.exe
4920	rmass.exe
4920	rmass.exe
3192	rmass.exe
3192	rmass.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4920	rmass.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 4920	2420	3c01e2c7710bbf04c9ae6d3b2f70bdd0_NeikiAnalytics.exe	84
PID 2420 wrote to memory of 4920	2420	3c01e2c7710bbf04c9ae6d3b2f70bdd0_NeikiAnalytics.exe	84
PID 2420 wrote to memory of 4920	2420	3c01e2c7710bbf04c9ae6d3b2f70bdd0_NeikiAnalytics.exe	84
PID 4920 wrote to memory of 616	4920	rmass.exe	5
PID 4920 wrote to memory of 3192	4920	rmass.exe	85
PID 4920 wrote to memory of 3192	4920	rmass.exe	85
PID 4920 wrote to memory of 3192	4920	rmass.exe	85
PID 4920 wrote to memory of 3436	4920	rmass.exe	57

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3436
- C:\Users\Admin\AppData\Local\Temp\3c01e2c7710bbf04c9ae6d3b2f70bdd0_NeikiAnalytics.exe
  "C:\Users\Admin\AppData\Local\Temp\3c01e2c7710bbf04c9ae6d3b2f70bdd0_NeikiAnalytics.exe"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2420
- - 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:4920
  - - C:\Windows\SysWOW64\rmass.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:3192

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

RECOVER32.DLL

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

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ahuy.exe

Path C:\Windows\SysWOW64\ahuy.exe
Size 66KB
SHA256 b005fd7db0804069984aaccf2238aaf307bb3b03a03f4b877a0d1472b801463b
MD5 1f6cfaaf21c7021c02f367b6fd4f7c87
SHA1 ef3db366850559209e47d59ca232b7ec830dadf4
SHA512 86e9aef7e1c86845a0c950fb153cfb05bca750934b8f523b27c6baff5ddfb191793235e2e12291b1dc4e7d339aed4cc7d2e098dc52a580358ecd956278c71ef4
SSDEEP 768:jIUFveW3VLgNRW9vui094v9Ix9D08MhDj3u2z9vZfOAFJxPVJQel81etxZ8L/KoN:jzrLgNR+LodP3xM/HiuGZI8vBt
MD5 SHA1 SHA512 SSDEEP

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ntdbg.exe

Path C:\Windows\SysWOW64\ntdbg.exe
Size 67KB
SHA256 89a97451805d4f46e7f45a9b30e5fb53862aebd11122dd8137bc7c4924feb59c
MD5 31ef44760549b8a2819f8173877ce09e
SHA1 ef6815ef1abf927210a90757e508f86bbcd92fb7
SHA512 877219193ed6959a2fdd9b7b0c8368b67879ab27cc8236e4233e8e6e5a81e146dea9782286feb733717cbbbc446d4671fef358dc64f9654509f72190f29178f5
SSDEEP 768:Erz3LvexpbXpQoPsZzsv9XZoBC2QXBbT9kQUf1boO1LfMfsyJBK99LS60XvE3ixE:E7expb+oPsZeDlBb1sbVNEK/0M3qT4
MD5 SHA1 SHA512 SSDEEP

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rmass.exe

Path C:\Windows\SysWOW64\rmass.exe
Size 64KB
SHA256 d84acbae812b5c0e2146adcc02bfec9db70be5d977aa76c6639eded85cb809f1
MD5 0eaa29e648a5d4d1c992eae483ed7d6d
SHA1 b506e6e3a5df7fc663468f47c4215dc1c3ecb12f
SHA512 2b192c17d82922ca3c95407b60012479965f63e8560af49900f178cae342511692c6f44629f3d0de72258501f5944313bf388fff2b847205020535a2426ce072
SSDEEP 768:vAUJmQCcmLCXQq6fsKiJYsIkjJVzqsVG5kuGKQLddOW/24WvgMb7rQ+ab:YUNHFKQbIkHvGMdOp4Zu7Mnb
MD5 SHA1 SHA512 SSDEEP

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hosts

Path C:\Windows\System32\drivers\etc\hosts
Size 1KB
SHA256 15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4
MD5 6f47b62de25d1745e296a06b3f98ed19
SHA1 a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f
SHA512 dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7
MD5 SHA1 SHA512

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memory/2420-4-0x0000000000400000-0x0000000000403000-memory.dmp

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memory/3192-49-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/4920-3-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/4920-48-0x0000000000400000-0x0000000000412000-memory.dmp

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