8d1d303ff2b477b6918fec46e0088a06e2fee1e0a7c7c0ce6ff6c8105de49a2f

General

Target

NEAS.296de4a4a72d3404623bfefb6db243b0_JC.exe
Size

44KB
MD5

296de4a4a72d3404623bfefb6db243b0
SHA1

60151f8b9111b5e0114cb5690af1d9db78533674
SHA256

8d1d303ff2b477b6918fec46e0088a06e2fee1e0a7c7c0ce6ff6c8105de49a2f
SHA512

32d7410e98a6083cdcecc239bf558382acccec10b8536731dba2098878e0f2dc531067faa2bf482a876fcc86e6e5218ecf31ae6349179d221d29c7fd51a6baf3
SSDEEP

768:jIUp2iP0n1gMLsq2DwXfisMeNgBMi3Hm/9FLxLQdKhrsDmYyzc:j/MLZXfXfG5m/9RxL+isZ

Score

10^/10

evasion persistence trojan

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\{46455554-5a43-4949-4645-55545A434949}	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{46455554-5a43-4949-4645-55545A434949}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	rmass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{46455554-5a43-4949-4645-55545A434949}\IsInstalled = "1"	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{46455554-5a43-4949-4645-55545A434949}\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
2932	rmass.exe
3128	rmass.exe

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	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
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}	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\aset32.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 opened for modification	C:\Windows\SysWOW64\rmass.exe	NEAS.296de4a4a72d3404623bfefb6db243b0_JC.exe
File created	C:\Windows\SysWOW64\rmass.exe	NEAS.296de4a4a72d3404623bfefb6db243b0_JC.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\ntdbg.exe	rmass.exe
File created	C:\Windows\SysWOW64\ntdbg.exe	rmass.exe
File created	C:\Windows\SysWOW64\RECOVER32.DLL	rmass.exe
File opened for modification	C:\Windows\SysWOW64\winrnt.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
3128	rmass.exe
3128	rmass.exe
2932	rmass.exe
2932	rmass.exe
2932	rmass.exe
2932	rmass.exe
2932	rmass.exe
2932	rmass.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2932	rmass.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3256 wrote to memory of 2932	3256	NEAS.296de4a4a72d3404623bfefb6db243b0_JC.exe	89
PID 3256 wrote to memory of 2932	3256	NEAS.296de4a4a72d3404623bfefb6db243b0_JC.exe	89
PID 3256 wrote to memory of 2932	3256	NEAS.296de4a4a72d3404623bfefb6db243b0_JC.exe	89
PID 2932 wrote to memory of 3128	2932	rmass.exe	92
PID 2932 wrote to memory of 3128	2932	rmass.exe	92
PID 2932 wrote to memory of 3128	2932	rmass.exe	92
PID 2932 wrote to memory of 624	2932	rmass.exe	3
PID 2932 wrote to memory of 3320	2932	rmass.exe	42

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:624

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3320
- C:\Users\Admin\AppData\Local\Temp\NEAS.296de4a4a72d3404623bfefb6db243b0_JC.exe
  "C:\Users\Admin\AppData\Local\Temp\NEAS.296de4a4a72d3404623bfefb6db243b0_JC.exe"
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3256
- - 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:2932
  - - C:\Windows\SysWOW64\rmass.exe
      --k33p
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      PID:3128

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

Replay Monitor

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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
44KB

MD5
b323a52acfb3c30f9bd2b1e48580262f

SHA1
dca1f34b931b72b73c12adfc916f1b5565d89f11

SHA256
f92aa0f755e01a124cddb77033145a9ef3b53459dd220e3c36668ac0faaeb0f0

SHA512
dff05fb710a6ea43a1c7ed34d08574110c7bc1596f9df04db651e5686d6c19ea712422cfbdb454eedc3f08ed3503cb429de9ffeab2bac4f90bd131701c90ce8d

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

Filesize
45KB

MD5
9a4c60b3cb4e9e247c0242e025b3e141

SHA1
03fa7ac0070aa338f175eba1369822acb3df7933

SHA256
cea9bcdb24337b75d54179d621aa4c50f0b79c31f6b707bfc8505ade29f421d8

SHA512
a578e680235811c3aa882352dd1502c057337292d495adea9f11c223f11b449937cf9edfd8c76bab29bf904f4022d2ca6e3f62e93a8b66fd08005aaca4f1dcba

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

Filesize
42KB

MD5
2005c9a997b69995cc42c88e528d3d37

SHA1
d0d393d0619fe787a41a3051e4fed103260180d9

SHA256
3f9d737a7cc9f4080bde796cdfd620aeaf7da041d7fed4f66dea170d73642c07

SHA512
a3cc94c07c50dc6199657317f3fea1067c3fce2cdd95c666ad64c87a9a58ebbd215bc1cbea6cbbc9542423571e056710f514b41492460762d25900bd1c9cfb93

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

Filesize
42KB

MD5
2005c9a997b69995cc42c88e528d3d37

SHA1
d0d393d0619fe787a41a3051e4fed103260180d9

SHA256
3f9d737a7cc9f4080bde796cdfd620aeaf7da041d7fed4f66dea170d73642c07

SHA512
a3cc94c07c50dc6199657317f3fea1067c3fce2cdd95c666ad64c87a9a58ebbd215bc1cbea6cbbc9542423571e056710f514b41492460762d25900bd1c9cfb93

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

Filesize
42KB

MD5
2005c9a997b69995cc42c88e528d3d37

SHA1
d0d393d0619fe787a41a3051e4fed103260180d9

SHA256
3f9d737a7cc9f4080bde796cdfd620aeaf7da041d7fed4f66dea170d73642c07

SHA512
a3cc94c07c50dc6199657317f3fea1067c3fce2cdd95c666ad64c87a9a58ebbd215bc1cbea6cbbc9542423571e056710f514b41492460762d25900bd1c9cfb93

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

Filesize
1KB

MD5
6f47b62de25d1745e296a06b3f98ed19

SHA1
a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f

SHA256
15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4

SHA512
dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7

Download Submit
memory/3256-3-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads