Malware Analysis Report

2024-09-11 14:53

Sample ID 240608-ydbjhsga45
Target XClient.exe
SHA256 378d29703f868965fb7f302df6ba41c86d082457cf1d1ac4a3a03439667ddb8b
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

378d29703f868965fb7f302df6ba41c86d082457cf1d1ac4a3a03439667ddb8b

Threat Level: Known bad

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

Malicious Activity Summary

xworm execution persistence rat trojan

Xworm family

Xworm

Detect Xworm Payload

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Executes dropped EXE

Drops startup file

Looks up external IP address via web service

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Creates scheduled task(s)

Uses Task Scheduler COM API

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-08 19:39

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

2024-06-08 19:39

Reported

2024-06-08 19:42

Platform

win7-20240221-en

Max time kernel

131s

Max time network

134s

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

Xworm

trojan rat xworm

Drops startup file

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\conhost.exe N/A
N/A N/A C:\ProgramData\conhost.exe N/A
N/A N/A C:\ProgramData\conhost.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\ProgramData\\conhost.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

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.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
Token: SeDebugPrivilege N/A C:\ProgramData\conhost.exe N/A
Token: SeDebugPrivilege N/A C:\ProgramData\conhost.exe N/A
Token: SeDebugPrivilege N/A C:\ProgramData\conhost.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2276 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 2832 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 2832 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 2832 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 1552 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2276 wrote to memory of 112 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\schtasks.exe
PID 2276 wrote to memory of 112 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\schtasks.exe
PID 2276 wrote to memory of 112 N/A C:\Users\Admin\AppData\Local\Temp\XClient.exe C:\Windows\System32\schtasks.exe
PID 1604 wrote to memory of 1560 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\conhost.exe
PID 1604 wrote to memory of 1560 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\conhost.exe
PID 1604 wrote to memory of 1560 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\conhost.exe
PID 1604 wrote to memory of 1660 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\conhost.exe
PID 1604 wrote to memory of 1660 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\conhost.exe
PID 1604 wrote to memory of 1660 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\conhost.exe
PID 1604 wrote to memory of 2716 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\conhost.exe
PID 1604 wrote to memory of 2716 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\conhost.exe
PID 1604 wrote to memory of 2716 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\conhost.exe

Uses Task Scheduler COM API

persistence

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:\ProgramData\conhost.exe'

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

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

C:\Windows\System32\schtasks.exe

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

C:\Windows\system32\taskeng.exe

taskeng.exe {A6DC4480-DCB7-44F8-9791-5B96176D6EF3} S-1-5-21-3452737119-3959686427-228443150-1000:QGTQZTRE\Admin:Interactive:[1]

C:\ProgramData\conhost.exe

C:\ProgramData\conhost.exe

C:\ProgramData\conhost.exe

C:\ProgramData\conhost.exe

C:\ProgramData\conhost.exe

C:\ProgramData\conhost.exe

Network

Country Destination Domain Proto
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 moving-agenda.gl.at.ply.gg udp
US 147.185.221.20:7000 moving-agenda.gl.at.ply.gg tcp
US 147.185.221.20:7000 moving-agenda.gl.at.ply.gg tcp
US 147.185.221.20:7000 moving-agenda.gl.at.ply.gg tcp
US 147.185.221.20:7000 moving-agenda.gl.at.ply.gg tcp
US 147.185.221.20:7000 moving-agenda.gl.at.ply.gg tcp

Files

memory/2276-0-0x000007FEF54F3000-0x000007FEF54F4000-memory.dmp

memory/2276-1-0x0000000000CE0000-0x0000000000CFA000-memory.dmp

memory/2276-2-0x000007FEF54F0000-0x000007FEF5EDC000-memory.dmp

memory/2652-7-0x0000000002D10000-0x0000000002D90000-memory.dmp

memory/2652-8-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

memory/2652-9-0x0000000002790000-0x0000000002798000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5 56700d63e2ab9aa40b358bcdbb1fcd42
SHA1 52f229da816d01fb953bad11871d8eb737da09e0
SHA256 14bd80d96afeb624dd6eba74d03a281ad0db7e45f979a9fce26993bd3845b2b7
SHA512 299c92d8387ad1af3f4cb564ae5348e77b3e69d652369c5511e60dca9c3fd5256dc050da656857d1ee3bce3bf6f4e57abdb384431eb6b022ba97e3e2f0c37bd9

memory/2544-15-0x000000001B6B0000-0x000000001B992000-memory.dmp

memory/2544-16-0x0000000001DD0000-0x0000000001DD8000-memory.dmp

C:\ProgramData\conhost.exe

MD5 ef4458792b0cb6ac36ec855d8fa22746
SHA1 0b1df777312b444dc0fecc83a2961d8184424f29
SHA256 378d29703f868965fb7f302df6ba41c86d082457cf1d1ac4a3a03439667ddb8b
SHA512 14eaaf133c1a9e863b644962ae48b9c1d46529d8919ef286ca07ee8cc142b28d0bb49683cf85110953f4ca6476415e0286421d2e931b5e259a6cc1b1e6a5ab65

memory/1560-34-0x00000000001C0000-0x00000000001DA000-memory.dmp

memory/2276-35-0x000007FEF54F3000-0x000007FEF54F4000-memory.dmp

memory/2276-36-0x000007FEF54F0000-0x000007FEF5EDC000-memory.dmp

memory/2716-40-0x0000000000CF0000-0x0000000000D0A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-08 19:39

Reported

2024-06-08 19:41

Platform

win10v2004-20240226-en

Max time kernel

121s

Max time network

129s

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
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-1-5-21-3808065738-1666277613-1125846146-1000\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\conhost.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\conhost.lnk C:\Users\Admin\AppData\Local\Temp\XClient.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\conhost.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\ProgramData\\conhost.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

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.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
Token: SeDebugPrivilege N/A C:\ProgramData\conhost.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

Uses Task Scheduler COM API

persistence

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:\ProgramData\conhost.exe'

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

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

C:\Windows\System32\schtasks.exe

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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4136 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8

C:\ProgramData\conhost.exe

C:\ProgramData\conhost.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 8.8.8.8:53 140.32.126.40.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 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
GB 172.217.169.74:443 tcp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 moving-agenda.gl.at.ply.gg udp
US 147.185.221.20:7000 moving-agenda.gl.at.ply.gg tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 147.185.221.20:7000 moving-agenda.gl.at.ply.gg tcp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 147.185.221.20:7000 moving-agenda.gl.at.ply.gg tcp
US 8.8.8.8:53 131.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 147.185.221.20:7000 moving-agenda.gl.at.ply.gg tcp

Files

memory/4296-0-0x00007FF82DDE3000-0x00007FF82DDE5000-memory.dmp

memory/4296-1-0x0000000000E60000-0x0000000000E7A000-memory.dmp

memory/4296-2-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

memory/2688-3-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_23j43s5l.22z.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2688-13-0x000001D245C00000-0x000001D245C22000-memory.dmp

memory/2688-14-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

memory/2688-15-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

memory/2688-16-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

memory/2688-17-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

memory/2688-20-0x00007FF82DDE0000-0x00007FF82E8A1000-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 3a6bad9528f8e23fb5c77fbd81fa28e8
SHA1 f127317c3bc6407f536c0f0600dcbcf1aabfba36
SHA256 986366767de5873f1b170a63f2a33ce05132d1afd90c8f5017afbca8ef1beb05
SHA512 846002154a0ece6f3e9feda6f115d3161dc21b3789525dd62ae1d9188495171293efdbe7be4710666dd8a15e66b557315b5a02918a741ed1d5f3ff0c515b98e2

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

MD5 e3b6cc0fbea08a0831f0026a696db8b8
SHA1 4e32202d4700061cfd80d55e42798131c9f530d4
SHA256 3284cae7b82be99d93064390ba071ba4321f3f24dd21515b37b2ca9f31b2e8d5
SHA512 6a06856f360b48c8bc8a15ffb8d7a6604ec357bcb1d0fad5d71a2cb876929a7b67eb40ba4493998ab1bbae8cb71212e124276f27d5c138a135041c27a41a0b7a

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

MD5 18470dd1aa7811c5a9825ea59429223b
SHA1 75859ea7baf1a8f5ba652ca783bb15f07615cc32
SHA256 98616a32e387ad9ae2f6faddc53cd60e0ba50fe4088abdc51b82b309cc8771bd
SHA512 cc8ff35595460d3ef16589cbab347ac07eff8b62766bfbceb386507ac631d433a2aa9187b0d6cef2b30b1fa08c92bc5a0061e984cc37c378119dcf51212f3def

memory/4296-59-0x00007FF82DDE3000-0x00007FF82DDE5000-memory.dmp

memory/4296-60-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

C:\ProgramData\conhost.exe

MD5 ef4458792b0cb6ac36ec855d8fa22746
SHA1 0b1df777312b444dc0fecc83a2961d8184424f29
SHA256 378d29703f868965fb7f302df6ba41c86d082457cf1d1ac4a3a03439667ddb8b
SHA512 14eaaf133c1a9e863b644962ae48b9c1d46529d8919ef286ca07ee8cc142b28d0bb49683cf85110953f4ca6476415e0286421d2e931b5e259a6cc1b1e6a5ab65