Malware Analysis Report

2024-11-16 13:39

Sample ID 240531-mfes6sfc29
Target XClient.exe
SHA256 e712b1e3a9313d86fce1ca310401f88e8fcda3c2b65ff9633613018bac09012f
Tags
xworm execution persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

e712b1e3a9313d86fce1ca310401f88e8fcda3c2b65ff9633613018bac09012f

Threat Level: Known bad

The file XClient.exe was found to be: Known bad.

Malicious Activity Summary

xworm execution persistence rat trojan

Xworm

Xworm family

Detect Xworm Payload

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Drops startup file

Adds Run key to start application

Looks up external IP address via web service

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-31 10:24

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

2024-05-31 10:24

Reported

2024-05-31 10:29

Platform

win10v2004-20240426-en

Max time kernel

293s

Max time network

230s

Command Line

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

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Enumerates physical storage devices

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
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:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Processes

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

"C:\Users\Admin\AppData\Local\Temp\XClient.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\XClient.exe'

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

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

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 isbn-employee.gl.at.ply.gg udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 205.131.50.23.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 27.178.89.13.in-addr.arpa udp

Files

memory/4612-0-0x00007FF886063000-0x00007FF886065000-memory.dmp

memory/4612-1-0x0000000000FA0000-0x0000000000FB8000-memory.dmp

memory/4612-2-0x00007FF886060000-0x00007FF886B21000-memory.dmp

memory/1980-3-0x00007FF886060000-0x00007FF886B21000-memory.dmp

memory/1980-4-0x00000220ADF00000-0x00000220ADF22000-memory.dmp

memory/1980-14-0x00007FF886060000-0x00007FF886B21000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_g0xpnuy1.5gk.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/1980-15-0x00007FF886060000-0x00007FF886B21000-memory.dmp

memory/1980-18-0x00007FF886060000-0x00007FF886B21000-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 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

MD5 f3bc9dee8a80a73a256a69e26fe61c07
SHA1 bc546c10ce1b4cb47b89ea60498384f88f96fa5a
SHA256 3c7f3194722f46cb07885da576daf720a5133913b3fbce4a3ef8c8040028364d
SHA512 be2d861832db826ee67f03e6a9151dc6802481c3b5984ce457e43cebecd162f60460ccf7ac5893169d01eff77e2a863c5e323d68e07f2b1b3d6dab5884f7ac6a

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

MD5 a2c8179aaa149c0b9791b73ce44c04d1
SHA1 703361b0d43ec7f669304e7c0ffbbfdeb1e484ff
SHA256 c1d30342a40a2b6e7553da30ceb85754d33820f6fbb3bbbed1ceb30d6390de4a
SHA512 2e201dd457d055baad86f68c15bcc7beb48d6dc2ffc10db7f304eb93f697e7b45991cbde857d25da2c9c60c23f3e13df8b5ed5809c1753737a23096e296cc9e3

memory/4612-57-0x00007FF886063000-0x00007FF886065000-memory.dmp

memory/4612-58-0x00007FF886060000-0x00007FF886B21000-memory.dmp