0c694c8bb23d771b96425f4781acd52304ee54fa07319813938cd0fa42534db7

General

Target

eab583f42479ad7d11c9331e42bc0ae0_NEIKI.exe
Size

20KB
MD5

eab583f42479ad7d11c9331e42bc0ae0
SHA1

6238de3214c9f2877bd057a88a12bbc3419ad6ef
SHA256

0c694c8bb23d771b96425f4781acd52304ee54fa07319813938cd0fa42534db7
SHA512

fac4fbab7f683a11d948c241d4188fb4d76463b0d6da673e11277c38beb3fee57db242b70b040127b73705075cb25d47e97010d6c2f9932459892973cee8c673
SSDEEP

384:jIz4Apz1qbyU6IBsdZzpfucfoGXxDCsfwa2qPXknPmddwVpTHRR0:jIUmz0bJ6AszzpmqxdfR2YU+ddwVD2

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\{53434647-4252-4254-5343-464742524254}	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{53434647-4252-4254-5343-464742524254}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	rmass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{53434647-4252-4254-5343-464742524254}\IsInstalled = "1"	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{53434647-4252-4254-5343-464742524254}\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
1992	rmass.exe
3024	rmass.exe

Loads dropped DLL 3 IoCs

pid	Process
1712	eab583f42479ad7d11c9331e42bc0ae0_NEIKI.exe
1712	eab583f42479ad7d11c9331e42bc0ae0_NEIKI.exe
1992	rmass.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000a000000015f7a-1.dat	upx
behavioral1/memory/1712-2-0x0000000000020000-0x0000000000031000-memory.dmp	upx
behavioral1/memory/1992-10-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral1/memory/3024-22-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral1/memory/1992-56-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral1/memory/3024-57-0x0000000000400000-0x0000000000411000-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}\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\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\aset32.exe	rmass.exe
File opened for modification	C:\Windows\SysWOW64\idbg32.exe	rmass.exe
File opened for modification	C:\Windows\SysWOW64\rmass.exe	eab583f42479ad7d11c9331e42bc0ae0_NEIKI.exe
File created	C:\Windows\SysWOW64\rmass.exe	eab583f42479ad7d11c9331e42bc0ae0_NEIKI.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\rmass.exe	rmass.exe
File opened for modification	C:\Windows\SysWOW64\ahuy.exe	rmass.exe
File opened for modification	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\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
1992	rmass.exe
1992	rmass.exe
1992	rmass.exe
3024	rmass.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	rmass.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 1992	1712	eab583f42479ad7d11c9331e42bc0ae0_NEIKI.exe	28
PID 1712 wrote to memory of 1992	1712	eab583f42479ad7d11c9331e42bc0ae0_NEIKI.exe	28
PID 1712 wrote to memory of 1992	1712	eab583f42479ad7d11c9331e42bc0ae0_NEIKI.exe	28
PID 1712 wrote to memory of 1992	1712	eab583f42479ad7d11c9331e42bc0ae0_NEIKI.exe	28
PID 1992 wrote to memory of 432	1992	rmass.exe	5
PID 1992 wrote to memory of 1380	1992	rmass.exe	21
PID 1992 wrote to memory of 3024	1992	rmass.exe	29
PID 1992 wrote to memory of 3024	1992	rmass.exe	29
PID 1992 wrote to memory of 3024	1992	rmass.exe	29
PID 1992 wrote to memory of 3024	1992	rmass.exe	29

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:432

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1380
- C:\Users\Admin\AppData\Local\Temp\eab583f42479ad7d11c9331e42bc0ae0_NEIKI.exe
  "C:\Users\Admin\AppData\Local\Temp\eab583f42479ad7d11c9331e42bc0ae0_NEIKI.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1712
- - 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
    - 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:1992
  - - C:\Windows\SysWOW64\rmass.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:3024

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
20KB

MD5
793c91a0183584580805540a871d2c8b

SHA1
1b956bda1bbf8ac80fa5663abefa95b9dcb82501

SHA256
b857e3ac55d8c00c2082d34801e3eeb2e188ed32882a8aa5e2443f0ff085102d

SHA512
1e20f5af4da3367735225f359385feb3195856c657cc95fd13305ff350680d746e69e486e5e8a02d3b3a459785765d4d8afd1593f3d2ecb7afbfdba8ce59b0be

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

Filesize
21KB

MD5
1c9d636b0f93c4c83b94a6a512beb5a4

SHA1
78f61e45829232764afac73e1c1fdb24e448c587

SHA256
a5345c099789518b55d5f50142b1399da4d6bcadf31f549c393e80b1b7de8f81

SHA512
31d90a36e5fff796f8293a6868b57f3518a468ae3f0a4d117395d3a226b76630b33ae612b4c5c3c66fa63ac54a5a2a1061fd62f8fd42265e5d264f83d932e623

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
18KB

MD5
77faceef7d1f53499c18f661df09f71a

SHA1
3d7cfbb8043ed15b736011723e0609762f78158f

SHA256
8fef2df8c9fae557b615bfb80d8d2a72437bc18435933ded6775e9eb71b62c4b

SHA512
7130898f8df55d6ab2f64c63f64004cbc47ac0fb9048bf05732ce0e90e669eefa944fcfa59992d952c62c6092d550a5dec797488216ae44540ff93216fd38db3

Download Submit
memory/1712-2-0x0000000000020000-0x0000000000031000-memory.dmp

Filesize
68KB

Download
memory/1712-9-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/1992-10-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/1992-56-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/3024-22-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/3024-57-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads