a0968ce30f7a79faf012fc9cadf2eff6eb858eb626ed5555891933102f6e0e2b

General

Target

6f6d1a905b7106996ffad17bba7d7980_NEIKI.exe
Size

66KB
MD5

6f6d1a905b7106996ffad17bba7d7980
SHA1

2ea3e6fe060788d9bfe09ac0461ab947081ec0f3
SHA256

a0968ce30f7a79faf012fc9cadf2eff6eb858eb626ed5555891933102f6e0e2b
SHA512

c0afe1f0d27c4f23b53e0c792f5962a7a52b9d981d361527f382a71be1c48fdcee8b00c26e5e088baf869ffaff4a2129f1e00dc7e58994458d0bf76ffafb0004
SSDEEP

1536:jAoDBgDkD9aiWyECoMdVJc5w2BPEF4tsk:8yZaRyECoMdVJc55Ketsk

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\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

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
1880	rmass.exe
1976	rmass.exe

Loads dropped DLL 3 IoCs

pid	Process
1724	6f6d1a905b7106996ffad17bba7d7980_NEIKI.exe
1724	6f6d1a905b7106996ffad17bba7d7980_NEIKI.exe
1880	rmass.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000b000000015d0f-1.dat	upx
behavioral1/memory/1724-2-0x0000000000020000-0x0000000000032000-memory.dmp	upx
behavioral1/memory/1880-10-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral1/memory/1880-21-0x0000000000370000-0x0000000000382000-memory.dmp	upx
behavioral1/memory/1976-23-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral1/memory/1880-78-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral1/memory/1976-95-0x0000000000400000-0x0000000000412000-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\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

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\ntdbg.exe	rmass.exe
File created	C:\Windows\SysWOW64\ntdbg.exe	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	6f6d1a905b7106996ffad17bba7d7980_NEIKI.exe
File created	C:\Windows\SysWOW64\rmass.exe	6f6d1a905b7106996ffad17bba7d7980_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\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\rmass.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 4 IoCs

pid	Process
1880	rmass.exe
1880	rmass.exe
1880	rmass.exe
1976	rmass.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1880	rmass.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 1880	1724	6f6d1a905b7106996ffad17bba7d7980_NEIKI.exe	28
PID 1724 wrote to memory of 1880	1724	6f6d1a905b7106996ffad17bba7d7980_NEIKI.exe	28
PID 1724 wrote to memory of 1880	1724	6f6d1a905b7106996ffad17bba7d7980_NEIKI.exe	28
PID 1724 wrote to memory of 1880	1724	6f6d1a905b7106996ffad17bba7d7980_NEIKI.exe	28
PID 1880 wrote to memory of 436	1880	rmass.exe	5
PID 1880 wrote to memory of 1368	1880	rmass.exe	21
PID 1880 wrote to memory of 1976	1880	rmass.exe	29
PID 1880 wrote to memory of 1976	1880	rmass.exe	29
PID 1880 wrote to memory of 1976	1880	rmass.exe	29
PID 1880 wrote to memory of 1976	1880	rmass.exe	29

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:436

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1368
- C:\Users\Admin\AppData\Local\Temp\6f6d1a905b7106996ffad17bba7d7980_NEIKI.exe
  "C:\Users\Admin\AppData\Local\Temp\6f6d1a905b7106996ffad17bba7d7980_NEIKI.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1724
- - 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:1880
  - - C:\Windows\SysWOW64\rmass.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:1976

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
66KB

MD5
8f8ffc57e85d905d26a6d027b4054c44

SHA1
5ef987170f8bd1ae12458b7cc189bef0d3d37fcf

SHA256
912ccc3f4e75a98349a3aa8681d05df4d849c4894b5b8611ae294f9ace73278d

SHA512
cfeed5c99f7ec412aa9578c75f0e3a878bc1b8bd366286b69527b16d58dcd1b4b49dbbe2f7c3c41eb5424e63a12e9490bc2197c9fc7e06f175e3e22da8b62e3f

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

Filesize
67KB

MD5
e9b103ebd4d608e32bb336a468a3267a

SHA1
1a7f9b331bd100c05aa9d592de94e79b7cf7ae87

SHA256
b62fc005b84bd3ac4034814386b3e1fa366c3663cb97606a9af074e574415ca1

SHA512
30da8cf3253a5dfa777253af93fd96ef029c50be183c860e5b9acd563e408799b92c66e4490923dcd3c173d3a92e0385bbc2577e6d2ad1b15907bb27dd56253d

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
63KB

MD5
76632a6af9e351227900b0743a9f83e7

SHA1
ea9ebebd087bc3eed62ae56e1079172d63e7f530

SHA256
41d06f70a8d600dd9684b38efd09e56b74432e5823f88d00cdd7a170bd8b782d

SHA512
92e95a35569b6571c3d7a781560e61739fcce09092c38646ccc142d2e328f8ba528e33377f9882644d002ec257e3a0d9ae2c2dd22dbc06d365800e2b852de44a

Download Submit
memory/1724-2-0x0000000000020000-0x0000000000032000-memory.dmp

Filesize
72KB

Download
memory/1724-8-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/1880-10-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1880-78-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1880-85-0x0000000000370000-0x0000000000382000-memory.dmp

Filesize
72KB

Download
memory/1880-21-0x0000000000370000-0x0000000000382000-memory.dmp

Filesize
72KB

Download
memory/1976-23-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1976-95-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads