b2d732f13a297452c2162b3dd66563b8680db7a578cdb2f9dc764cdec416a676

General

Target

1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exe
Size

21KB
MD5

1d34480daa71363b6ede46541d60b840
SHA1

5c9eb30c26d7aaf8706c555dfafff5158ff0ff68
SHA256

b2d732f13a297452c2162b3dd66563b8680db7a578cdb2f9dc764cdec416a676
SHA512

f1eb8d14148ebdc775091838c12d8ae137a54a9c0480abacb9395a40b5441850089b842a47384abe5e2bd5a516902d2c65ab8d6c9803e39ab7e70bb7cfe44747
SSDEEP

384:UBWoC5GDr6wc/w3HgM6vDUTAXBGCVf4WVlFvX8Mb7a6M/F7:rRkiLw3HsDSARGG/MMb7rCd

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\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

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55}\StubPath = "C:\\Windows\\system32\\ahuy.exe"	rmass.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55}	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	rmass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{534E4656-4751-4c55-534E-465647514c55}\IsInstalled = "1"	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
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

Processes:

rmass.exermass.exe

pid process

208 rmass.exe
4660 rmass.exe

pid	process
208	rmass.exe
4660	rmass.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3572-0-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral2/memory/3572-8-0x0000000000400000-0x0000000000411000-memory.dmp	upx
C:\Windows\SysWOW64\rmass.exe	upx
behavioral2/memory/208-9-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral2/memory/4660-15-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral2/memory/208-53-0x0000000000400000-0x0000000000411000-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}\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

Processes:

rmass.exe1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exe

description	ioc	process
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 created	C:\Windows\SysWOW64\rmass.exe	1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exe
File created	C:\Windows\SysWOW64\ahuy.exe	rmass.exe
File created	C:\Windows\SysWOW64\ntdbg.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
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	1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exe
File opened for modification	C:\Windows\SysWOW64\ntdbg.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

208 rmass.exe
208 rmass.exe
208 rmass.exe
4660 rmass.exe
4660 rmass.exe
208 rmass.exe
208 rmass.exe
208 rmass.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exermass.exe

description pid process

Token: SeDebugPrivilege 3572 1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exe
Token: SeDebugPrivilege 208 rmass.exe

pid	process
208	rmass.exe
208	rmass.exe
208	rmass.exe
4660	rmass.exe
4660	rmass.exe
208	rmass.exe
208	rmass.exe
208	rmass.exe

description	pid	process
Token: SeDebugPrivilege	3572	1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exe
Token: SeDebugPrivilege	208	rmass.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exermass.exe

description	pid	process	target process
PID 3572 wrote to memory of 208	3572	1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exe	rmass.exe
PID 3572 wrote to memory of 208	3572	1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exe	rmass.exe
PID 3572 wrote to memory of 208	3572	1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exe	rmass.exe
PID 208 wrote to memory of 584	208	rmass.exe	winlogon.exe
PID 208 wrote to memory of 4660	208	rmass.exe	rmass.exe
PID 208 wrote to memory of 4660	208	rmass.exe	rmass.exe
PID 208 wrote to memory of 4660	208	rmass.exe	rmass.exe
PID 208 wrote to memory of 3400	208	rmass.exe	Explorer.EXE

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:584

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3400

C:\Users\Admin\AppData\Local\Temp\1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exe
"C:\Users\Admin\AppData\Local\Temp\1d34480daa71363b6ede46541d60b840_NeikiAnalytics.exe"
2⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3572

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
- 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:208

C:\Windows\SysWOW64\rmass.exe
--k33p
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:4660

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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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
5e363fe7418c208568ef75f8c7604909

SHA1
e37e427e0e0eaeac3e9e36fca50d2628f8e29969

SHA256
2db397504c1064070238880438ff601f4d9bd7ca3574dff880c790ccf41b5250

SHA512
6cd431f56c62bac1f1d5c217cad501f1dee6c0ffd771b5ac73651110a3cbc754224e91310b29e11391c804dcc5dafbf63ffcf3fc89988aa3d7549fc346306ee9

Download Submit
C:\Windows\SysWOW64\ntdbg.exe
Filesize
25KB

MD5
b2b7d8f481a9558a7ae4d3f42f1bdc85

SHA1
0f4b7e6fa2ac8bbc23c9572c871a2e00f8b468af

SHA256
8b673462131a32e5eb1ae98e668c8d35f2fb08cff7e25903ebba466aac026a09

SHA512
024599edec1d3ae12158f22b10c51330d2ef9e8cc8398d349c07901dff54aff98dff5c991078d69b6a8f1989e5d0dfc6238d20394db664a00f449e8742e7702c

Download Submit
C:\Windows\SysWOW64\rmass.exe
Filesize
21KB

MD5
1d34480daa71363b6ede46541d60b840

SHA1
5c9eb30c26d7aaf8706c555dfafff5158ff0ff68

SHA256
b2d732f13a297452c2162b3dd66563b8680db7a578cdb2f9dc764cdec416a676

SHA512
f1eb8d14148ebdc775091838c12d8ae137a54a9c0480abacb9395a40b5441850089b842a47384abe5e2bd5a516902d2c65ab8d6c9803e39ab7e70bb7cfe44747

Download Submit
C:\Windows\System32\drivers\etc\hosts
Filesize
1KB

MD5
6f47b62de25d1745e296a06b3f98ed19

SHA1
a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f

SHA256
15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4

SHA512
dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7

Download Submit
memory/208-9-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/208-53-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/3572-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/3572-8-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4660-15-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads