Malware Analysis Report

2024-09-11 12:57

Sample ID 240610-24jvcsvdnn
Target 6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f
SHA256 6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f
Tags
sality backdoor evasion trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f

Threat Level: Known bad

The file 6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f was found to be: Known bad.

Malicious Activity Summary

sality backdoor evasion trojan upx

Sality

UAC bypass

Modifies firewall policy service

Windows security bypass

Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality

UPX dump on OEP (original entry point)

Windows security modification

UPX packed file

Checks whether UAC is enabled

Drops file in System32 directory

Drops file in Windows directory

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

System policy modification

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-10 23:08

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 23:08

Reported

2024-06-10 23:10

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

56s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe"

Signatures

Modifies firewall policy service

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Sality

backdoor sality

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Windows security bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality

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

UPX dump on OEP (original entry point)

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

UPX packed file

upx
Description Indicator Process Target
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\UacDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\Svc C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe

"C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe"

Network

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

Files

memory/388-0-0x0000000000400000-0x0000000000423000-memory.dmp

memory/388-1-0x0000000002B10000-0x0000000003B9E000-memory.dmp

memory/388-2-0x0000000000400000-0x0000000000423000-memory.dmp

memory/388-3-0x0000000002B10000-0x0000000003B9E000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-10 23:08

Reported

2024-06-10 23:10

Platform

win7-20231129-en

Max time kernel

118s

Max time network

120s

Command Line

"taskhost.exe"

Signatures

Modifies firewall policy service

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Sality

backdoor sality

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Windows security bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality

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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

UPX dump on OEP (original entry point)

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
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

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
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
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\Svc C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\EXPLORER.EXE C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
File opened for modification C:\Windows\SysWOW64\wsctf.exe C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\SYSTEM.INI C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe N/A

Processes

C:\Windows\system32\taskhost.exe

"taskhost.exe"

C:\Windows\system32\Dwm.exe

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

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\DllHost.exe

C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}

C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe

"C:\Users\Admin\AppData\Local\Temp\6afe66b76352aa0be096113bb40cac83bf8335902a23bf90ba5a67f618f3c03f.exe"

C:\Windows\SysWOW64\EXPLORER.EXE

C:\Windows\system32\EXPLORER.EXE

Network

N/A

Files

memory/2340-0-0x0000000000400000-0x0000000000423000-memory.dmp

memory/2340-7-0x0000000002730000-0x00000000037BE000-memory.dmp

memory/2340-6-0x0000000002730000-0x00000000037BE000-memory.dmp

memory/2340-3-0x0000000002730000-0x00000000037BE000-memory.dmp

memory/1276-12-0x0000000001F10000-0x0000000001F12000-memory.dmp

memory/2340-23-0x0000000000370000-0x0000000000371000-memory.dmp

memory/2340-10-0x0000000002730000-0x00000000037BE000-memory.dmp

memory/2340-26-0x0000000000260000-0x0000000000262000-memory.dmp

memory/2340-24-0x0000000000260000-0x0000000000262000-memory.dmp

memory/2340-9-0x0000000002730000-0x00000000037BE000-memory.dmp

memory/2340-4-0x0000000002730000-0x00000000037BE000-memory.dmp

memory/2340-21-0x0000000000370000-0x0000000000371000-memory.dmp

memory/2340-20-0x0000000000260000-0x0000000000262000-memory.dmp

memory/2340-11-0x0000000002730000-0x00000000037BE000-memory.dmp

memory/2340-8-0x0000000002730000-0x00000000037BE000-memory.dmp

memory/2340-5-0x0000000002730000-0x00000000037BE000-memory.dmp

memory/2340-33-0x0000000000260000-0x0000000000262000-memory.dmp

memory/2340-39-0x0000000000400000-0x0000000000423000-memory.dmp

memory/2340-29-0x0000000002730000-0x00000000037BE000-memory.dmp