81f52c5c91929b21526a2d4cea1b22affe052e3f3fab15850c833011fecf50e6

General

Target

439dd41976b82dad882561246050d170_NeikiAnalytics.exe
Size

24KB
MD5

439dd41976b82dad882561246050d170
SHA1

c4f5cfc943af75f23b3349b386c040ecad7e9378
SHA256

81f52c5c91929b21526a2d4cea1b22affe052e3f3fab15850c833011fecf50e6
SHA512

de60f4c435b991c9b81925ea2e0d8bddca7cac4cecd9602a4387542436d571f2d95513a35289252b84ce3b604f4862cfebfe44b29e2fd61325fc50c8a6459a8f
SSDEEP

768:jIUAjUnzqUgF1ITpnE1RevhteQsQqKtzIb:jajKzqUOKnYV7Qqe8b

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

Processes:

rmass.exe

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

Drops file in Drivers directory 1 IoCs

Processes:

rmass.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts rmass.exe

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

Processes:

rmass.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5350444F-4846-4d41-5350-444F48464d41}	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5350444F-4846-4d41-5350-444F48464d41}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	rmass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5350444F-4846-4d41-5350-444F48464d41}\IsInstalled = "1"	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5350444F-4846-4d41-5350-444F48464d41}\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

Processes:

rmass.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ntdbg.exe"	rmass.exe
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

Executes dropped EXE 2 IoCs

Processes:

rmass.exermass.exe

pid process

2308 rmass.exe
1104 rmass.exe

pid	process
2308	rmass.exe
1104	rmass.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2308-4-0x0000000000400000-0x0000000000411000-memory.dmp	upx
C:\Windows\SysWOW64\rmass.exe	upx
behavioral2/memory/1104-15-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral2/memory/2308-49-0x0000000000400000-0x0000000000411000-memory.dmp	upx

Windows security modification 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

rmass.exe

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

Processes:

rmass.exe

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

Processes:

rmass.exe439dd41976b82dad882561246050d170_NeikiAnalytics.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\winrnt.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	rmass.exe
File opened for modification	C:\Windows\SysWOW64\rmass.exe	439dd41976b82dad882561246050d170_NeikiAnalytics.exe
File created	C:\Windows\SysWOW64\rmass.exe	439dd41976b82dad882561246050d170_NeikiAnalytics.exe
File opened for modification	C:\Windows\SysWOW64\RECOVER32.DLL	rmass.exe
File created	C:\Windows\SysWOW64\ahuy.exe	rmass.exe
File created	C:\Windows\SysWOW64\RECOVER32.DLL	rmass.exe
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\ahuy.exe	rmass.exe

Drops file in Program Files directory 3 IoCs

Processes:

rmass.exe

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

Processes:

rmass.exermass.exe

pid process

2308 rmass.exe
2308 rmass.exe
2308 rmass.exe
2308 rmass.exe
2308 rmass.exe
2308 rmass.exe
1104 rmass.exe
1104 rmass.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rmass.exe

description pid process

Token: SeDebugPrivilege 2308 rmass.exe

pid	process
2308	rmass.exe
2308	rmass.exe
2308	rmass.exe
2308	rmass.exe
2308	rmass.exe
2308	rmass.exe
1104	rmass.exe
1104	rmass.exe

description	pid	process
Token: SeDebugPrivilege	2308	rmass.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

439dd41976b82dad882561246050d170_NeikiAnalytics.exermass.exe

description	pid	process	target process
PID 4600 wrote to memory of 2308	4600	439dd41976b82dad882561246050d170_NeikiAnalytics.exe	rmass.exe
PID 4600 wrote to memory of 2308	4600	439dd41976b82dad882561246050d170_NeikiAnalytics.exe	rmass.exe
PID 4600 wrote to memory of 2308	4600	439dd41976b82dad882561246050d170_NeikiAnalytics.exe	rmass.exe
PID 2308 wrote to memory of 1104	2308	rmass.exe	rmass.exe
PID 2308 wrote to memory of 1104	2308	rmass.exe	rmass.exe
PID 2308 wrote to memory of 1104	2308	rmass.exe	rmass.exe
PID 2308 wrote to memory of 612	2308	rmass.exe	winlogon.exe
PID 2308 wrote to memory of 3492	2308	rmass.exe	Explorer.EXE

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:612

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3492

C:\Users\Admin\AppData\Local\Temp\439dd41976b82dad882561246050d170_NeikiAnalytics.exe
"C:\Users\Admin\AppData\Local\Temp\439dd41976b82dad882561246050d170_NeikiAnalytics.exe"
2⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4600

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:2308

C:\Windows\SysWOW64\rmass.exe
--k33p
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:1104

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
24KB

MD5
8144ac0079432bf6420f1f5047d484f2

SHA1
06e7141eff29d72dafddc3a7399d2182767d8367

SHA256
93196f29e42e378a5bf047bfb0ce57fba03c767356e324b1c6718cf8c9bbd7f9

SHA512
141c5e8a2d5f566a440f7e9328200f8429c48d17df0b4f7ca175981d7e1f534fafbc5142c0906027c8184804af24d00ac141556b0d00cc59994f0d104e4d7a7d

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

Filesize
25KB

MD5
8cf9b116496201a2d9f2f318cceb11bf

SHA1
0e31b0c9c43832696d916e7457d21f2db51317c6

SHA256
c75e3dbeb51976e55429e4b5398de2b7d62a6f0618ce7b82ba17343980ee9440

SHA512
af24b7f46d1f116c56128a6b5ffe887e24d496a088a48949e419928ffe03d2409e795ba22be793f67c865f95639827afdf4aa5bdab079f5f04b2a36efdb26898

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

Filesize
22KB

MD5
9b9697cbe47016cb80e232aa30cd81aa

SHA1
cf119ae175370751609e87839bf9a11d17481027

SHA256
b8a3fa46a932d872807ef73e2add7ae9d4a82683d46a7f17fdf8206a3e16a53e

SHA512
5155ea4875299c5891374a39c3ec4af26cbc5411319031bb508af0ef6d66875a8db229d83bb5dffa4cabe98dea4bea747624ea99b0e0fe8e75c02c43917d9120

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

Filesize
1KB

MD5
6f47b62de25d1745e296a06b3f98ed19

SHA1
a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f

SHA256
15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4

SHA512
dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7

Download Submit
memory/1104-15-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2308-4-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2308-49-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4600-3-0x0000000000400000-0x0000000000403000-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