e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc

General

Target

e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe
Size

24KB
MD5

534afd258d739b9972ae586c0ac44dd3
SHA1

f4e40f614f2b4ab7cddde49aad33697efe85f965
SHA256

e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc
SHA512

65ff671faa8d6613d7531382c0a8fc9ebff8dfc4d2f78fb3fb48caaa7e0c39290c1e73a08f2076b2cce989a2fccab42e73b22851d0855ae022f7522da0effd56
SSDEEP

384:jIz4QFC6l7f3qw+GyMjkNFeIcs1zPR+vJGRzUtV+/O0O+8oUfg:jIUmC6NfIWwNAp4dJRzUtV+/VJsg

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
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	rmass.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\IsInstalled = "1"	rmass.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\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

2912 rmass.exe
2504 rmass.exe

pid	process
2912	rmass.exe
2504	rmass.exe

Loads dropped DLL 3 IoCs

Processes:

e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exermass.exe

pid	process
2148	e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe
2148	e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe
2912	rmass.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
\Windows\SysWOW64\rmass.exe	upx
behavioral1/memory/2148-2-0x0000000000020000-0x0000000000031000-memory.dmp	upx
behavioral1/memory/2912-12-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral1/memory/2504-18-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral1/memory/2912-56-0x0000000000400000-0x0000000000411000-memory.dmp	upx
behavioral1/memory/2504-57-0x0000000000400000-0x0000000000411000-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
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

Processes:

rmass.exee114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe

description	ioc	process
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\rmass.exe	rmass.exe
File opened for modification	C:\Windows\SysWOW64\rmass.exe	e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe
File created	C:\Windows\SysWOW64\rmass.exe	e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe
File opened for modification	C:\Windows\SysWOW64\ahuy.exe	rmass.exe
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\ntdbg.exe	rmass.exe
File created	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 4 IoCs

Processes:

rmass.exermass.exe

pid process

2912 rmass.exe
2912 rmass.exe
2912 rmass.exe
2504 rmass.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rmass.exe

description pid process

Token: SeDebugPrivilege 2912 rmass.exe

pid	process
2912	rmass.exe
2912	rmass.exe
2912	rmass.exe
2504	rmass.exe

description	pid	process
Token: SeDebugPrivilege	2912	rmass.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exermass.exe

description	pid	process	target process
PID 2148 wrote to memory of 2912	2148	e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe	rmass.exe
PID 2148 wrote to memory of 2912	2148	e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe	rmass.exe
PID 2148 wrote to memory of 2912	2148	e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe	rmass.exe
PID 2148 wrote to memory of 2912	2148	e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe	rmass.exe
PID 2912 wrote to memory of 2504	2912	rmass.exe	rmass.exe
PID 2912 wrote to memory of 2504	2912	rmass.exe	rmass.exe
PID 2912 wrote to memory of 2504	2912	rmass.exe	rmass.exe
PID 2912 wrote to memory of 2504	2912	rmass.exe	rmass.exe
PID 2912 wrote to memory of 424	2912	rmass.exe	winlogon.exe
PID 2912 wrote to memory of 1208	2912	rmass.exe	Explorer.EXE

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:424

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1208

C:\Users\Admin\AppData\Local\Temp\e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe
"C:\Users\Admin\AppData\Local\Temp\e114cb2d14f88755e603602c42fa5b46a1ba7697fc37b7a84b4ee7deb511cacc.exe"
2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2148

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:2912

C:\Windows\SysWOW64\rmass.exe
--k33p
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2504

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

Loading Replay Monitor...

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
26e49c4ce54cba513312f4043d89ed86

SHA1
c173f3233a3f800b29cfcf3ef7031f527dfd7520

SHA256
1afdb4a078c8ea6b24b85d318ddb3683f406b22ed76ca3bc7a73393c221a123b

SHA512
795ee3227253d68a7cbacf126af76e3d1942c489d0fb049f1c3ecb8f7ccb708048e79f99f39356d2f5fec610fd33f38189c4c28201afad6a65a7e28039e57e83

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

Filesize
25KB

MD5
deaef7edb15bad4da2d1def6f89b067b

SHA1
a97b547e78728fe42b6a4eac7ceca07d2eff506f

SHA256
a8008ae084e2f3e6672364fc03000db874d75350c58bae982ed158c0305d00fc

SHA512
7b60ced858bd32435a7e20ee849328c556e1890fd0a0b6f89c4630bb46925a8cbdfefe1878c383e8e134d7c5eb86e92f835480bbe87f3099ac32d7edd9654dcf

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
22KB

MD5
91c1c6c464fa49f4a9a210c9a6a94411

SHA1
7b24ea1235fae9c4c6fc8e94adce15f78883431c

SHA256
b3429696947f721597ed989495c1a251c157bf07c61338a3a552611b31479a29

SHA512
0beee56485c35de7a49c24fd6ebf7eb696f996e2e9a08e25561ce743924be36a648afb677feaa2f884436d9be1c9b8b2532f8ed11b44751024ca4153e12ddf4f

Download Submit
memory/2148-2-0x0000000000020000-0x0000000000031000-memory.dmp

Filesize
68KB

Download
memory/2148-8-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/2504-18-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2504-57-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2912-12-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2912-56-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads