Malware Analysis Report

2024-09-11 13:01

Sample ID 240613-2gqz6axamm
Target 4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e
SHA256 4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e
Tags
upx evasion persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e

Threat Level: Known bad

The file 4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e was found to be: Known bad.

Malicious Activity Summary

upx evasion persistence trojan

Windows security bypass

Sets file execution options in registry

Modifies Installed Components in the registry

Drops file in Drivers directory

Executes dropped EXE

Windows security modification

UPX packed file

Loads dropped DLL

Modifies WinLogon

Drops file in System32 directory

Drops file in Program Files directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Winlogon Helper DLL
T1547.004
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Winlogon Helper DLL
T1547.004
Defense Evasion
TA0005
Impair Defenses
T1562
Disable or Modify Tools
T1562.001
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-13 22:33

Signatures

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 22:33

Reported

2024-06-13 22:36

Platform

win7-20240508-en

Max time kernel

149s

Max time network

121s

Command Line

winlogon.exe

Signatures

Windows security bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\system32\drivers\etc\hosts C:\Windows\SysWOW64\rmass.exe N/A

Modifies Installed Components in the registry

persistence
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{50554D41-5254-4e52-5055-4D4152544e52}\IsInstalled = "1" C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{50554D41-5254-4e52-5055-4D4152544e52}\StubPath = "C:\\Windows\\system32\\ahuy.exe" C:\Windows\SysWOW64\rmass.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{50554D41-5254-4e52-5055-4D4152544e52} C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{50554D41-5254-4e52-5055-4D4152544e52}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" C:\Windows\SysWOW64\rmass.exe N/A

Sets file execution options in registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a" C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ntdbg.exe" C:\Windows\SysWOW64\rmass.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Windows security modification

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A

Modifies WinLogon

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup" C:\Windows\SysWOW64\rmass.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B} C:\Windows\SysWOW64\rmass.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a" C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\RECOVER32.DLL" C:\Windows\SysWOW64\rmass.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\ahuy.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\aset32.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\idbg32.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\RECOVER32.DLL C:\Windows\SysWOW64\rmass.exe N/A
File created C:\Windows\SysWOW64\RECOVER32.DLL C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\winrnt.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\rmass.exe C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe N/A
File created C:\Windows\SysWOW64\rmass.exe C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe N/A
File opened for modification C:\Windows\SysWOW64\ntdbg.exe C:\Windows\SysWOW64\rmass.exe N/A
File created C:\Windows\SysWOW64\ntdbg.exe C:\Windows\SysWOW64\rmass.exe N/A
File created C:\Windows\SysWOW64\ahuy.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\rmass.exe C:\Windows\SysWOW64\rmass.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\Common Files\System\winrnt.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\System\aset32.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\System\idbg32.exe C:\Windows\SysWOW64\rmass.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rmass.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2244 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe C:\Windows\SysWOW64\rmass.exe
PID 2244 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe C:\Windows\SysWOW64\rmass.exe
PID 2244 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe C:\Windows\SysWOW64\rmass.exe
PID 2244 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe C:\Windows\SysWOW64\rmass.exe
PID 1948 wrote to memory of 432 N/A C:\Windows\SysWOW64\rmass.exe C:\Windows\system32\winlogon.exe
PID 1948 wrote to memory of 1200 N/A C:\Windows\SysWOW64\rmass.exe C:\Windows\Explorer.EXE
PID 1948 wrote to memory of 2216 N/A C:\Windows\SysWOW64\rmass.exe C:\Windows\SysWOW64\rmass.exe
PID 1948 wrote to memory of 2216 N/A C:\Windows\SysWOW64\rmass.exe C:\Windows\SysWOW64\rmass.exe
PID 1948 wrote to memory of 2216 N/A C:\Windows\SysWOW64\rmass.exe C:\Windows\SysWOW64\rmass.exe
PID 1948 wrote to memory of 2216 N/A C:\Windows\SysWOW64\rmass.exe C:\Windows\SysWOW64\rmass.exe

Processes

C:\Windows\system32\winlogon.exe

winlogon.exe

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe

"C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe"

C:\Windows\SysWOW64\rmass.exe

"C:\Windows\system32\rmass.exe"

C:\Windows\SysWOW64\rmass.exe

--k33p

Network

Country Destination Domain Proto
US 8.8.8.8:53 diwua.nu udp
US 8.8.8.8:53 diwua.nu udp

Files

memory/2244-0-0x0000000000400000-0x0000000000411000-memory.dmp

C:\Windows\SysWOW64\rmass.exe

MD5 02fc12942ca3aade3adb4b3c30524d4e
SHA1 486cc3e5f7f48cd55f8e19e554802cfc571e2c1c
SHA256 4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e
SHA512 f720ef88792e967a57e1db265d109033aea71968d394ffa0fab5fad0029d2bd9074282c7036f34401c27d4b40748364e825652745f3ea443035bc67b46ffc753

memory/2216-26-0x0000000000400000-0x0000000000411000-memory.dmp

memory/1948-20-0x0000000000400000-0x0000000000411000-memory.dmp

memory/2244-12-0x0000000000400000-0x0000000000411000-memory.dmp

memory/2244-5-0x0000000000320000-0x0000000000331000-memory.dmp

C:\Windows\SysWOW64\RECOVER32.DLL

MD5 2b2c28a7a01f9584fe220ef84003427f
SHA1 5fc023df0b5064045eb8de7f2dbe26f07f6fec70
SHA256 9e00af53b1d0c0f5270d94a666d95aa7b4dcb9fea49487c210c055c9dcfcc9eb
SHA512 39192a8a91dec1abff25af8dac0cf39da4dfd51b3fb4f1ef0b4e776185d4280fbe8387c2ea778da7bbf2ce288b0bce4d23cbe8d9e87bbd250159044f5adbac78

C:\Windows\SysWOW64\ntdbg.exe

MD5 0abee37e841ec38d9b0b67e39f34d4a8
SHA1 094aa1df2a364d51164008b42d1b4e0d11039027
SHA256 596da86c1024603ccada05af7f1a12f24a63af7fe68d82c1d9f633bb926f1ab8
SHA512 ebd0a0d9686c2c361eec1fa683da7eead3c5dcda8e450997b82cfe48b2f86db6e98f690351fe9938634ce11150817bff4b66046c523acc0b323adc7ee7b319f5

C:\Windows\SysWOW64\ahuy.exe

MD5 a4aa954ab97af883747bff14033ace74
SHA1 bb4e2676183314f949fba72181ebb36a0f8e08b1
SHA256 66bf1dd20a3d7f73a3edeb9d76a1c1d6be8d0fb1d645e6346f3d7a0d78d6ce4a
SHA512 5fa196b75c36c799348ad72bf33af5152f271d5547c69ec830c796239a1daaea60ebd62e855f6ad40388a12c2c7c3d8ea706398fc76f2c2e64ffdd5292d2144b

memory/1948-60-0x0000000000400000-0x0000000000411000-memory.dmp

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

MD5 b10b13206b0f2cf3968050072f6979bf
SHA1 699db21ba9cecf3f13ac3d76e22cfa41aa94da80
SHA256 0eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4
SHA512 d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 22:33

Reported

2024-06-13 22:36

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

60s

Command Line

winlogon.exe

Signatures

Windows security bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\system32\drivers\etc\hosts C:\Windows\SysWOW64\rmass.exe N/A

Modifies Installed Components in the registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F424A49-5955-4945-4F42-4A4959554945} C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F424A49-5955-4945-4F42-4A4959554945}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F424A49-5955-4945-4F42-4A4959554945}\IsInstalled = "1" C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4F424A49-5955-4945-4F42-4A4959554945}\StubPath = "C:\\Windows\\system32\\ahuy.exe" C:\Windows\SysWOW64\rmass.exe N/A

Sets file execution options in registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a" C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ntdbg.exe" C:\Windows\SysWOW64\rmass.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Windows security modification

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "5120" C:\Windows\SysWOW64\rmass.exe N/A

Modifies WinLogon

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B} C:\Windows\SysWOW64\rmass.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a" C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\RECOVER32.DLL" C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup" C:\Windows\SysWOW64\rmass.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\ntdbg.exe C:\Windows\SysWOW64\rmass.exe N/A
File created C:\Windows\SysWOW64\ahuy.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\RECOVER32.DLL C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\idbg32.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\rmass.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\aset32.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\rmass.exe C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe N/A
File created C:\Windows\SysWOW64\rmass.exe C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe N/A
File created C:\Windows\SysWOW64\ntdbg.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\ahuy.exe C:\Windows\SysWOW64\rmass.exe N/A
File created C:\Windows\SysWOW64\RECOVER32.DLL C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Windows\SysWOW64\winrnt.exe C:\Windows\SysWOW64\rmass.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\Common Files\System\winrnt.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\System\aset32.exe C:\Windows\SysWOW64\rmass.exe N/A
File opened for modification C:\Program Files (x86)\Common Files\System\idbg32.exe C:\Windows\SysWOW64\rmass.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A
N/A N/A C:\Windows\SysWOW64\rmass.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rmass.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1384 wrote to memory of 4336 N/A C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe C:\Windows\SysWOW64\rmass.exe
PID 1384 wrote to memory of 4336 N/A C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe C:\Windows\SysWOW64\rmass.exe
PID 1384 wrote to memory of 4336 N/A C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe C:\Windows\SysWOW64\rmass.exe
PID 4336 wrote to memory of 608 N/A C:\Windows\SysWOW64\rmass.exe C:\Windows\system32\winlogon.exe
PID 4336 wrote to memory of 1524 N/A C:\Windows\SysWOW64\rmass.exe C:\Windows\SysWOW64\rmass.exe
PID 4336 wrote to memory of 1524 N/A C:\Windows\SysWOW64\rmass.exe C:\Windows\SysWOW64\rmass.exe
PID 4336 wrote to memory of 1524 N/A C:\Windows\SysWOW64\rmass.exe C:\Windows\SysWOW64\rmass.exe
PID 4336 wrote to memory of 3412 N/A C:\Windows\SysWOW64\rmass.exe C:\Windows\Explorer.EXE

Processes

C:\Windows\system32\winlogon.exe

winlogon.exe

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe

"C:\Users\Admin\AppData\Local\Temp\4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e.exe"

C:\Windows\SysWOW64\rmass.exe

"C:\Windows\system32\rmass.exe"

C:\Windows\SysWOW64\rmass.exe

--k33p

Network

Country Destination Domain Proto
US 8.8.8.8:53 mazew.cd udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 mazew.cd udp

Files

memory/1384-0-0x0000000000400000-0x0000000000411000-memory.dmp

C:\Windows\SysWOW64\rmass.exe

MD5 02fc12942ca3aade3adb4b3c30524d4e
SHA1 486cc3e5f7f48cd55f8e19e554802cfc571e2c1c
SHA256 4cf0238cdd275a66de9ee1ea32e02ce3fc4bb6d33cf9bdc1ba39c6c58789830e
SHA512 f720ef88792e967a57e1db265d109033aea71968d394ffa0fab5fad0029d2bd9074282c7036f34401c27d4b40748364e825652745f3ea443035bc67b46ffc753

memory/1384-12-0x0000000000400000-0x0000000000411000-memory.dmp

memory/1524-18-0x0000000000400000-0x0000000000411000-memory.dmp

C:\Windows\SysWOW64\ahuy.exe

MD5 46441d673055bd5d7828e4ec299fc102
SHA1 868d7195696afcda758fabaf0351367224a4da21
SHA256 64531d4af0408f5aed97c888f0d35047677f93cc68a799d636023d96208c87c1
SHA512 5a26c9aa0d7b0e2db589ce644d78e52f75905cdf48aaac8743ff82c69c8e95a7626e8003da635e1d3e555598ddb9e21471d4e1516b8cbb8e1ae21fba8d87939b

C:\Windows\SysWOW64\ntdbg.exe

MD5 c1b52f8fa57a457daa1e3d27845c4439
SHA1 66eb157b0205a49d108c434491ce4c9d6f2d6e96
SHA256 fe8c785755326543442b9ac07efdac0455958016d0081f875dc5eacda819f877
SHA512 0ad15ba6c0efc81c87fc44317daf0f61b87e7cb9822a13c85e462bab03ef847ca5442823c27b70f75b97f71daf16b0d02d4b5e5da03b56864c4fd1714ca6e85f

C:\Windows\SysWOW64\RECOVER32.DLL

MD5 2b2c28a7a01f9584fe220ef84003427f
SHA1 5fc023df0b5064045eb8de7f2dbe26f07f6fec70
SHA256 9e00af53b1d0c0f5270d94a666d95aa7b4dcb9fea49487c210c055c9dcfcc9eb
SHA512 39192a8a91dec1abff25af8dac0cf39da4dfd51b3fb4f1ef0b4e776185d4280fbe8387c2ea778da7bbf2ce288b0bce4d23cbe8d9e87bbd250159044f5adbac78

memory/4336-52-0x0000000000400000-0x0000000000411000-memory.dmp

memory/1524-53-0x0000000000400000-0x0000000000411000-memory.dmp

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

MD5 6f47b62de25d1745e296a06b3f98ed19
SHA1 a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f
SHA256 15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4
SHA512 dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7