Malware Analysis Report

2024-09-11 13:53

Sample ID 240615-gcl57azeqa
Target WizClient.rar
SHA256 7bdd0af1bd40c6f7267a83218a882962067867e1a65a84e3ff1198f21b5a8baf
Tags
xworm execution persistence rat 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 Overview

score
10/10

SHA256

7bdd0af1bd40c6f7267a83218a882962067867e1a65a84e3ff1198f21b5a8baf

Threat Level: Known bad

The file WizClient.rar was found to be: Known bad.

Malicious Activity Summary

xworm execution persistence rat trojan

Xworm family

Detect Xworm Payload

Xworm

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Uses Task Scheduler COM API

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Creates scheduled task(s)

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Command and Scripting Interpreter
T1059
PowerShell
T1059.001
Scheduled Task/Job
T1053
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Scheduled Task/Job
T1053
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Scheduled Task/Job
T1053
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-15 05:39

Signatures

Detect Xworm Payload

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

Xworm family

xworm

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 05:39

Reported

2024-06-15 05:39

Platform

win10v2004-20240508-en

Max time kernel

6s

Max time network

6s

Command Line

"C:\Users\Admin\AppData\Local\Temp\WizClient.exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Command and Scripting Interpreter: PowerShell

execution
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
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\WizClient.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WizClient = "C:\\ProgramData\\WizClient.exe" C:\Users\Admin\AppData\Local\Temp\WizClient.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.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
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
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:\Users\Admin\AppData\Local\Temp\WizClient.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5024 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\WizClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 5024 wrote to memory of 2324 N/A C:\Users\Admin\AppData\Local\Temp\WizClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 5024 wrote to memory of 4964 N/A C:\Users\Admin\AppData\Local\Temp\WizClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 5024 wrote to memory of 4964 N/A C:\Users\Admin\AppData\Local\Temp\WizClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 5024 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\WizClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 5024 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\WizClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 5024 wrote to memory of 704 N/A C:\Users\Admin\AppData\Local\Temp\WizClient.exe C:\Windows\System32\schtasks.exe
PID 5024 wrote to memory of 704 N/A C:\Users\Admin\AppData\Local\Temp\WizClient.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

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

"C:\Users\Admin\AppData\Local\Temp\WizClient.exe"

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\WizClient.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WizClient.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\WizClient.exe'

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WizClient" /tr "C:\ProgramData\WizClient.exe"

Network

Files

memory/5024-0-0x0000000000E80000-0x0000000000E94000-memory.dmp

memory/5024-1-0x00007FF9F8C03000-0x00007FF9F8C05000-memory.dmp

memory/2324-7-0x000001B1C1980000-0x000001B1C19A2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_alh5rlnc.vwm.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2324-12-0x00007FF9F8C00000-0x00007FF9F96C1000-memory.dmp

memory/2324-13-0x00007FF9F8C00000-0x00007FF9F96C1000-memory.dmp

memory/2324-14-0x00007FF9F8C00000-0x00007FF9F96C1000-memory.dmp

memory/2324-17-0x00007FF9F8C00000-0x00007FF9F96C1000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 cadef9abd087803c630df65264a6c81c
SHA1 babbf3636c347c8727c35f3eef2ee643dbcc4bd2
SHA256 cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438
SHA512 7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 15dde0683cd1ca19785d7262f554ba93
SHA1 d039c577e438546d10ac64837b05da480d06bf69
SHA256 d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961
SHA512 57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672