6a96053a428452d0e03f2462b16265816c5b37042a81205812d6ea412f916ed6

General

Target

a09d4a606443ecbee935532ae68954f0_NEIKI.exe
Size

21KB
MD5

a09d4a606443ecbee935532ae68954f0
SHA1

8a551e63708d2e0855d07b1b7c3e1c543ba0141a
SHA256

6a96053a428452d0e03f2462b16265816c5b37042a81205812d6ea412f916ed6
SHA512

3990709f2ff65d10ffdf60ad4a1f09fda9154d49f849988a6adc608af81762d22d32498c7dcca3811478c8e12b75200a2d27c67c2ddf0f532427c8f2b3e6455c
SSDEEP

384:UBWoC5GDr6wc/w3HgM6vDUTAXBGCVf4WVlFvX8Mb7a67:rRkiLw3HsDSARGG/MMb7r7

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\{4B584950-5043-4b46-4B58-495050434b46}	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	rmass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\IsInstalled = "1"	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\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
1984	rmass.exe
2636	rmass.exe

Loads dropped DLL 3 IoCs

pid	Process
3024	a09d4a606443ecbee935532ae68954f0_NEIKI.exe
3024	a09d4a606443ecbee935532ae68954f0_NEIKI.exe
1984	rmass.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3024-0-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral1/memory/3024-5-0x0000000000330000-0x0000000000341000-memory.dmp	upx
behavioral1/files/0x000c000000014c67-4.dat	upx
behavioral1/memory/3024-14-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral1/memory/1984-59-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral1/memory/2636-60-0x0000000000400000-0x0000000000411000-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\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
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 opened for modification	C:\Windows\SysWOW64\ntdbg.exe	rmass.exe
File created	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\idbg32.exe	rmass.exe
File opened for modification	C:\Windows\SysWOW64\rmass.exe	rmass.exe
File created	C:\Windows\SysWOW64\rmass.exe	a09d4a606443ecbee935532ae68954f0_NEIKI.exe
File opened for modification	C:\Windows\SysWOW64\ahuy.exe	rmass.exe
File created	C:\Windows\SysWOW64\ahuy.exe	rmass.exe
File opened for modification	C:\Windows\SysWOW64\aset32.exe	rmass.exe
File opened for modification	C:\Windows\SysWOW64\rmass.exe	a09d4a606443ecbee935532ae68954f0_NEIKI.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 4 IoCs

pid	Process
1984	rmass.exe
1984	rmass.exe
1984	rmass.exe
2636	rmass.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3024	a09d4a606443ecbee935532ae68954f0_NEIKI.exe
Token: SeDebugPrivilege	1984	rmass.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 1984	3024	a09d4a606443ecbee935532ae68954f0_NEIKI.exe	28
PID 3024 wrote to memory of 1984	3024	a09d4a606443ecbee935532ae68954f0_NEIKI.exe	28
PID 3024 wrote to memory of 1984	3024	a09d4a606443ecbee935532ae68954f0_NEIKI.exe	28
PID 3024 wrote to memory of 1984	3024	a09d4a606443ecbee935532ae68954f0_NEIKI.exe	28
PID 1984 wrote to memory of 420	1984	rmass.exe	5
PID 1984 wrote to memory of 1392	1984	rmass.exe	21
PID 1984 wrote to memory of 2636	1984	rmass.exe	29
PID 1984 wrote to memory of 2636	1984	rmass.exe	29
PID 1984 wrote to memory of 2636	1984	rmass.exe	29
PID 1984 wrote to memory of 2636	1984	rmass.exe	29

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:420

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1392
- C:\Users\Admin\AppData\Local\Temp\a09d4a606443ecbee935532ae68954f0_NEIKI.exe
  "C:\Users\Admin\AppData\Local\Temp\a09d4a606443ecbee935532ae68954f0_NEIKI.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3024
- - 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:1984
  - - C:\Windows\SysWOW64\rmass.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:2636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\RECOVER32.DLL

Filesize
5KB

MD5
2b2c28a7a01f9584fe220ef84003427f

SHA1
5fc023df0b5064045eb8de7f2dbe26f07f6fec70

SHA256
9e00af53b1d0c0f5270d94a666d95aa7b4dcb9fea49487c210c055c9dcfcc9eb

SHA512
39192a8a91dec1abff25af8dac0cf39da4dfd51b3fb4f1ef0b4e776185d4280fbe8387c2ea778da7bbf2ce288b0bce4d23cbe8d9e87bbd250159044f5adbac78

Download Submit
C:\Windows\SysWOW64\ahuy.exe

Filesize
23KB

MD5
77b4576ad2e81029d905247619a0f0ea

SHA1
dd0b4e013658f039b95ef5b8a515881390086537

SHA256
74da9bb929b2fd5bb04f2a8e61323e5d84553b13947fe28d7b740ec0bfbfe899

SHA512
6c38dea834cafaa7b0ed771b20a4c8e1bad05ea3d4d68928f8fb85bce4d4ce3b5e5a82b1effa67499c85d901cac3b3fe07888447f7157154228b74b2755dbd12

Download Submit
C:\Windows\SysWOW64\ntdbg.exe

Filesize
24KB

MD5
e7e9405849741159e2f9d1b96e74a9c0

SHA1
24d18a7cea23132b5c10b604bf72e0b2d118cb1e

SHA256
527074facc2798ebfaf07a39743989732fe6acfcf42a20a306df04f4f98af65f

SHA512
f8536e35c2f4ee4e716aed42a8d14081171fd1f5220fdbf4a2338dd688723c5e4d1d0c75812c7a29767f9b55cf7df7cf7982d5ea7ff8a1a694a00bc970dbf238

Download Submit
C:\Windows\System32\drivers\etc\hosts

Filesize
1KB

MD5
b10b13206b0f2cf3968050072f6979bf

SHA1
699db21ba9cecf3f13ac3d76e22cfa41aa94da80

SHA256
0eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4

SHA512
d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d

Download Submit
\Windows\SysWOW64\rmass.exe

Filesize
21KB

MD5
a09d4a606443ecbee935532ae68954f0

SHA1
8a551e63708d2e0855d07b1b7c3e1c543ba0141a

SHA256
6a96053a428452d0e03f2462b16265816c5b37042a81205812d6ea412f916ed6

SHA512
3990709f2ff65d10ffdf60ad4a1f09fda9154d49f849988a6adc608af81762d22d32498c7dcca3811478c8e12b75200a2d27c67c2ddf0f532427c8f2b3e6455c

Download Submit
memory/1984-59-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2636-60-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/3024-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/3024-5-0x0000000000330000-0x0000000000341000-memory.dmp

Filesize
68KB

Download
memory/3024-14-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/3024-13-0x0000000000330000-0x0000000000341000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads