16b351680971c950b25c6e7d07a934ccac7eeddeeeed140e05b73b2f6ddf1345

Analysis

max time kernel
151s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 04:17

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General

Target
9b466b132ca4cc7c2b74fb455f25aa70_NeikiAnalytics.exe
Size 23KB
Sample240603-ewl87acd25
SHA256 16b351680971c950b25c6e7d07a934ccac7eeddeeeed140e05b73b2f6ddf1345
MD5 9b466b132ca4cc7c2b74fb455f25aa70
SHA1 ca548b4396442fbed312f9598ace2e544304b278
SHA512 d2b673a275ed64f3d8af035b88e022aebcd443942861dab6f0dc3409782a325bc3a511124f07b52ab5c2027eb46f3dff93a37a31f17e9cdf72675ba4dbaff59d
SSDEEP 384:jIz4lOXRnvuxYrdyRnPR1aeXCYRKSxBKcilP2Y98h6gKvZ6BBslHR:jIUlOhnvuxNRn5VXfRLBmeMsT2x
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\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

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F41494C-5643-4e59-4F41-494C56434e59}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	rmass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F41494C-5643-4e59-4F41-494C56434e59}\IsInstalled = "1"	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F41494C-5643-4e59-4F41-494C56434e59}\StubPath = "C:\\Windows\\system32\\ahuy.exe"	rmass.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F41494C-5643-4e59-4F41-494C56434e59}	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
2532	rmass.exe
4160	rmass.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0008000000023251-4.dat	upx
behavioral2/memory/2532-5-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral2/memory/2532-42-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral2/memory/4160-49-0x0000000000400000-0x0000000000411000-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\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

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
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
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

Drops file in System32 directory 12 IoCs

description	ioc	Process
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 created	C:\Windows\SysWOW64\rmass.exe	9b466b132ca4cc7c2b74fb455f25aa70_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 opened for modification	C:\Windows\SysWOW64\rmass.exe	rmass.exe
File opened for modification	C:\Windows\SysWOW64\rmass.exe	9b466b132ca4cc7c2b74fb455f25aa70_NeikiAnalytics.exe
File opened for modification	C:\Windows\SysWOW64\ntdbg.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
4160	rmass.exe
4160	rmass.exe
2532	rmass.exe
2532	rmass.exe
2532	rmass.exe
2532	rmass.exe
2532	rmass.exe
2532	rmass.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2532	rmass.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2532	2384	9b466b132ca4cc7c2b74fb455f25aa70_NeikiAnalytics.exe	92
PID 2384 wrote to memory of 2532	2384	9b466b132ca4cc7c2b74fb455f25aa70_NeikiAnalytics.exe	92
PID 2384 wrote to memory of 2532	2384	9b466b132ca4cc7c2b74fb455f25aa70_NeikiAnalytics.exe	92
PID 2532 wrote to memory of 4160	2532	rmass.exe	93
PID 2532 wrote to memory of 4160	2532	rmass.exe	93
PID 2532 wrote to memory of 4160	2532	rmass.exe	93
PID 2532 wrote to memory of 616	2532	rmass.exe	5
PID 2532 wrote to memory of 3164	2532	rmass.exe	56

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

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3164
- C:\Users\Admin\AppData\Local\Temp\9b466b132ca4cc7c2b74fb455f25aa70_NeikiAnalytics.exe
  "C:\Users\Admin\AppData\Local\Temp\9b466b132ca4cc7c2b74fb455f25aa70_NeikiAnalytics.exe"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2384
- - 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:2532
  - - C:\Windows\SysWOW64\rmass.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:4160

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3496 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
1⤵
PID:2272

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 23KB
SHA256 f4c21f3121a686395d49cc8ee68a04d261939d62728ad54e00963b6c0f9bea1c
MD5 91f3e7867d3403c6e8ee8b602f732e62
SHA1 8f4e4db68040f9120fe736b3636a02356710938a
SHA512 ac71598cf468860e55e357b04795f8b72ebfc090476af590b63d29b80542678641e4a66f6534a136b05af4bd9b20c3aa62c7b40888ef8a417581cf7bd1592e69
SSDEEP 384:jIz4pE5UCpXa9/ElK4asLjnMM3dnKiXBkucF7Cr+RcQc41GM7yFaCDnJ6IUaQafg:jIUpNppCPzXBkVF7Cr+RcQAEyouJ6I0F
MD5 SHA1 SHA512 SSDEEP

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ntdbg.exe

Path C:\Windows\SysWOW64\ntdbg.exe
Size 24KB
SHA256 60c7d0493c5ed58fbc2ff495638ce9377750ac0912d42a3f150642c365872dc2
MD5 39595c2089c4723644724a2c2b16f96e
SHA1 aa6b5573f288bcf30a79c69af649a23e6fce4d52
SHA512 7a0fe2871b23ce4a129a68067aea8f8732e4bf3b092a4550369f81ce11373db0bbfb6ea28869166301278de5d99865764903aa69e96eed4162f705dc568f194d
SSDEEP 384:ErzPaZRQLptoUn068JvzpzfJfPqH4Rs0qw4pnbg8ywmUCsrWRsAp:ErzVLHoUn0PZzptHqYR0PJmUCUWRsA
MD5 SHA1 SHA512 SSDEEP

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rmass.exe

Path C:\Windows\SysWOW64\rmass.exe
Size 21KB
SHA256 40f41f457db32b27cc2bce3692e4485ec8862ce1762ef83a1f15f4e0b84a1ef4
MD5 5924e90b5b79feed3cd244d66a80d24c
SHA1 91e286e128390ae8a6a090d0f35d472e6f41b12f
SHA512 a195aee6697c3c86214d28c92488f5d2f7247e7e7ec1afc2f3fa75dae94af8ef8ad66b5d353528d0ef852350453c6f57003ca57b6a8f275625f420ae09ebf24f
SSDEEP 384:UBWoC5GDr6wc/w3HgM6vDUTAXBGCVf4WVlFvX8Mb7a6fn:rRkiLw3HsDSARGG/MMb7rv
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/2384-3-0x0000000000400000-0x0000000000403000-memory.dmp

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memory/2532-5-0x0000000000400000-0x0000000000411000-memory.dmp

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memory/2532-42-0x0000000000400000-0x0000000000411000-memory.dmp

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memory/4160-49-0x0000000000400000-0x0000000000411000-memory.dmp

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