Malware Analysis Report

2024-12-07 16:52

Sample ID 241113-cmkynaxqhj
Target bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4
SHA256 bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4
Tags
defense_evasion discovery evasion persistence trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4

Threat Level: Known bad

The file bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4 was found to be: Known bad.

Malicious Activity Summary

defense_evasion discovery evasion persistence trojan upx

Windows security bypass

Boot or Logon Autostart Execution: Active Setup

Event Triggered Execution: Image File Execution Options Injection

Drops file in Drivers directory

Loads dropped DLL

Executes dropped EXE

Windows security modification

Indicator Removal: Clear Persistence

Modifies WinLogon

Drops file in System32 directory

UPX packed file

Drops file in Program Files directory

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 02:11

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 02:11

Reported

2024-11-13 02:14

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

156s

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

Boot or Logon Autostart Execution: Active Setup

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{48474E42-5742-4757-4847-4E4257424757} C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{48474E42-5742-4757-4847-4E4257424757}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{48474E42-5742-4757-4847-4E4257424757}\IsInstalled = "1" C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{48474E42-5742-4757-4847-4E4257424757}\StubPath = "C:\\Windows\\system32\\ahuy.exe" 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

Event Triggered Execution: Image File Execution Options Injection

persistence
Description Indicator Process Target
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
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.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

Windows security modification

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

Indicator Removal: Clear Persistence

defense_evasion
Description Indicator Process Target
Delete value \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger 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\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 created C:\Windows\SysWOW64\rmass.exe C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.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 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\rmass.exe C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.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 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

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

Drops file in Program Files directory

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rmass.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rmass.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.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\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rmass.exe N/A

Processes

C:\Windows\system32\winlogon.exe

winlogon.exe

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.exe

"C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.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 yfiavze.st udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 yfiavze.st udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

memory/3892-0-0x0000000000400000-0x0000000000412000-memory.dmp

C:\Windows\SysWOW64\rmass.exe

MD5 9166bbe6b2dbe4282017f49265dd44ca
SHA1 ca7f9b36a1e068278bfdf6d89d4703cb1a34d847
SHA256 bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4
SHA512 d026686bb9a1af448f334c6065fafe8be9f19b485ca6c639872cc8a8153e7c7c619770ba5b716232293a75521a104463b64dc0d8d34653c3034055053eba11f1

memory/3892-11-0x0000000000400000-0x0000000000412000-memory.dmp

memory/4672-17-0x0000000000400000-0x0000000000412000-memory.dmp

C:\Windows\SysWOW64\ahuy.exe

MD5 45341ff50ac8546cda773e2601d176e0
SHA1 5908991090540ccce6ebfced1ef7b93e326a03d3
SHA256 4dfc0cb4392d89bb9078a3e033921ee94986b3e5fd10129063829862c1a2210b
SHA512 fd985a50d68607b4eb3eaef37f637069fff506b8ef982df9920e537f732064215afdcd1a860330d72e177db6d20e06dd8ca120da8d0fe4307e273fd80531040b

C:\Windows\SysWOW64\RECOVER32.DLL

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

C:\Windows\SysWOW64\ntdbg.exe

MD5 97e3ca47af3fadc36029d34669acb46e
SHA1 3de5035be3d34143cfffe9f59e05ae041db1e2cb
SHA256 45da11d29fe6cadc7a82c63e119646e0129b7d508bb9162a727c23ea31aa23a0
SHA512 d02787ae0eaa4cbc48b78ccfc045f492b79ccd838e496bdeef16c7fec358951b71bf67191cf44db3116d64a5f7ed073a974931bdb48fb132e2411c7bf5a2c266

memory/3580-42-0x0000000000400000-0x0000000000412000-memory.dmp

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

MD5 6f47b62de25d1745e296a06b3f98ed19
SHA1 a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f
SHA256 15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4
SHA512 dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 02:11

Reported

2024-11-13 02:14

Platform

win7-20240903-en

Max time kernel

149s

Max time network

125s

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

Boot or Logon Autostart Execution: Active Setup

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5A514142-4f50-5745-5A51-41424F505745} C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5A514142-4f50-5745-5A51-41424F505745}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a" C:\Windows\SysWOW64\rmass.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5A514142-4f50-5745-5A51-41424F505745}\IsInstalled = "1" C:\Windows\SysWOW64\rmass.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5A514142-4f50-5745-5A51-41424F505745}\StubPath = "C:\\Windows\\system32\\ahuy.exe" 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

Event Triggered Execution: Image File Execution Options Injection

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

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

Indicator Removal: Clear Persistence

defense_evasion
Description Indicator Process Target
Delete value \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger 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}\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
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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification 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:\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\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.exe N/A
File created C:\Windows\SysWOW64\rmass.exe C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.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 opened for modification C:\Windows\SysWOW64\ahuy.exe C:\Windows\SysWOW64\rmass.exe N/A
File created 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\idbg32.exe 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

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rmass.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.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\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rmass.exe N/A

Processes

C:\Windows\system32\winlogon.exe

winlogon.exe

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.exe

"C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.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 caiefwooyymum.st udp
US 8.8.8.8:53 caiefwooyymum.st udp

Files

memory/1928-0-0x0000000000400000-0x0000000000412000-memory.dmp

\Windows\SysWOW64\rmass.exe

MD5 9166bbe6b2dbe4282017f49265dd44ca
SHA1 ca7f9b36a1e068278bfdf6d89d4703cb1a34d847
SHA256 bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4
SHA512 d026686bb9a1af448f334c6065fafe8be9f19b485ca6c639872cc8a8153e7c7c619770ba5b716232293a75521a104463b64dc0d8d34653c3034055053eba11f1

memory/2244-15-0x0000000000400000-0x0000000000412000-memory.dmp

memory/1928-10-0x0000000000400000-0x0000000000412000-memory.dmp

C:\Windows\SysWOW64\ahuy.exe

MD5 571cdf7cb706a32af53de1d899fdd55c
SHA1 c57d16ec196d17c4f8b48ecd7a8e225df94ddf1c
SHA256 4329446e3bc57cabcd0ebeb2a36e987d15dee0a0726fd4d2670a75a9745bebf3
SHA512 5dbe9437703ddc0cb116b0e3bbb7222166b6e5ef24efdb7313ac0170ebf203b577498d9aaa9db37b496cde9914d28f62440a9fd54adc3c0dcce1ed13c7135f99

C:\Windows\SysWOW64\ntdbg.exe

MD5 1185944d1a2fa89b27d31fff2795429d
SHA1 d27bdcd1d0b328f53ed275dcfc3649f4b83f7a0c
SHA256 e7b86e394ea92fb06f41f5fd0045b203b0c5d7744096dead379c4b814bb91f05
SHA512 48df53779d1d9c271e2da476bbdb530531b691c356345a4b176d5484b2b1b4ec9eeef680c60a417d53bfcd09b9a53e35bca1beb217cecb43b2803fa82a30ba56

C:\Windows\SysWOW64\RECOVER32.DLL

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

memory/2244-45-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2212-55-0x0000000000400000-0x0000000000412000-memory.dmp

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

MD5 b10b13206b0f2cf3968050072f6979bf
SHA1 699db21ba9cecf3f13ac3d76e22cfa41aa94da80
SHA256 0eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4
SHA512 d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d