Malware Analysis Report

2024-11-16 13:38

Sample ID 240530-l2tzjsef94
Target 1.rar
SHA256 c289b644e32dac8b9ae76b02e01cd301a680bb3847ed60c396477d60ec861ac7
Tags
xworm execution 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

c289b644e32dac8b9ae76b02e01cd301a680bb3847ed60c396477d60ec861ac7

Threat Level: Known bad

The file 1.rar was found to be: Known bad.

Malicious Activity Summary

xworm execution rat trojan

Detect Xworm Payload

Xworm

Xworm family

Command and Scripting Interpreter: PowerShell

Drops startup file

Looks up external IP address via web service

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 10:02

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

2024-05-30 10:02

Reported

2024-05-30 10:02

Platform

win11-20240508-en

Max time kernel

31s

Max time network

5s

Command Line

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

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

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\sigmaclient.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\sigmaclient.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 use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Processes

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

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

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'sigmaclient.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 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
N/A 127.0.0.1:18412 tcp
N/A 127.0.0.1:18412 tcp

Files

memory/1832-0-0x00007FFD2CCF3000-0x00007FFD2CCF5000-memory.dmp

memory/1832-1-0x0000000000A60000-0x0000000000A7A000-memory.dmp

memory/1832-2-0x00007FFD2CCF0000-0x00007FFD2D7B2000-memory.dmp

memory/4060-3-0x00007FFD2CCF0000-0x00007FFD2D7B2000-memory.dmp

memory/4060-12-0x00000217D0180000-0x00000217D01A2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_t5ybdz2s.2lm.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4060-13-0x00007FFD2CCF0000-0x00007FFD2D7B2000-memory.dmp

memory/4060-14-0x00007FFD2CCF0000-0x00007FFD2D7B2000-memory.dmp

memory/4060-15-0x00007FFD2CCF0000-0x00007FFD2D7B2000-memory.dmp

memory/4060-18-0x00007FFD2CCF0000-0x00007FFD2D7B2000-memory.dmp

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

MD5 627073ee3ca9676911bee35548eff2b8
SHA1 4c4b68c65e2cab9864b51167d710aa29ebdcff2e
SHA256 85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
SHA512 3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

MD5 1a9fa92a4f2e2ec9e244d43a6a4f8fb9
SHA1 9910190edfaccece1dfcc1d92e357772f5dae8f7
SHA256 0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888
SHA512 5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

MD5 f28832ecd9829ee81bb32f98f0747445
SHA1 ac0dc6c286da7b0b7b1b595aaf4f8877e1304125
SHA256 d44590cb55e999c1e0abdd9932e00ddde1bc637ac3eb7d02374ace88479f2f50
SHA512 3b72129f951df7d4b2437ed761ff00ea9dc046a284665a3036b9c86fd20626435f775ec2bb9665435b7d8ec6a211e6c54d1debae75b5ae8778797b3485a163fa

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

MD5 f0c827e2d4b9565a0a1f30d472487ee7
SHA1 19883ec6fb9fca78f9f57177c01d98459db7c374
SHA256 3cb75a6b59a2d09b1528f11875b0284e9ebb3216f3c4f5cf7824fe6b49e781c4
SHA512 b9251a5f68fe6062bc0e815abd7b5210050868eafec5bca7bd560ab6f89a3f4871088027dfa32c71782619eb558944800d35d508ae12e627579a6bb73c8d3754

memory/1832-55-0x00007FFD2CCF0000-0x00007FFD2D7B2000-memory.dmp