Malware Analysis Report

2024-09-11 14:08

Sample ID 240614-qkm7wswcpq
Target python-3.11.4-amd64.exe
SHA256 a5988b3ae8424c1f5fdc69bb76d38782f2bd152fad311246aef971bfb389b8a3
Tags
xworm discovery 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

a5988b3ae8424c1f5fdc69bb76d38782f2bd152fad311246aef971bfb389b8a3

Threat Level: Known bad

The file python-3.11.4-amd64.exe was found to be: Known bad.

Malicious Activity Summary

xworm discovery execution persistence rat trojan

Xworm

Detect Xworm Payload

Command and Scripting Interpreter: PowerShell

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Drops startup file

Looks up external IP address via web service

Adds Run key to start application

Checks installed software on the system

Enumerates physical storage devices

Unsigned PE

Creates scheduled task(s)

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

Suspicious use of WriteProcessMemory

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

2024-06-14 13:19

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 13:19

Reported

2024-06-14 13:20

Platform

win10v2004-20240508-en

Max time kernel

30s

Max time network

31s

Command Line

"C:\Users\Admin\AppData\Local\Temp\python-3.11.4-amd64.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

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
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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\python-3.11.4-amd64.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\ProgramData\svhost.exe N/A

Drops startup file

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\svhost.exe N/A
N/A N/A C:\ProgramData\python-3.11.4-amd64.exe N/A
N/A N/A C:\Windows\Temp\{AEA80D93-BA7B-4864-8844-5E0FD9B80B12}\.cr\python-3.11.4-amd64.exe N/A
N/A N/A C:\ProgramData\svhost.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\Temp\{AEA80D93-BA7B-4864-8844-5E0FD9B80B12}\.cr\python-3.11.4-amd64.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\ProgramData\\svhost.exe" C:\ProgramData\svhost.exe N/A

Checks installed software on the system

discovery

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 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:\ProgramData\svhost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\ProgramData\svhost.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:\ProgramData\svhost.exe N/A
Token: SeDebugPrivilege N/A C:\ProgramData\svhost.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1808 wrote to memory of 1204 N/A C:\Users\Admin\AppData\Local\Temp\python-3.11.4-amd64.exe C:\ProgramData\svhost.exe
PID 1808 wrote to memory of 1204 N/A C:\Users\Admin\AppData\Local\Temp\python-3.11.4-amd64.exe C:\ProgramData\svhost.exe
PID 1808 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\python-3.11.4-amd64.exe C:\ProgramData\python-3.11.4-amd64.exe
PID 1808 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\python-3.11.4-amd64.exe C:\ProgramData\python-3.11.4-amd64.exe
PID 1808 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\python-3.11.4-amd64.exe C:\ProgramData\python-3.11.4-amd64.exe
PID 4572 wrote to memory of 3176 N/A C:\ProgramData\python-3.11.4-amd64.exe C:\Windows\Temp\{AEA80D93-BA7B-4864-8844-5E0FD9B80B12}\.cr\python-3.11.4-amd64.exe
PID 4572 wrote to memory of 3176 N/A C:\ProgramData\python-3.11.4-amd64.exe C:\Windows\Temp\{AEA80D93-BA7B-4864-8844-5E0FD9B80B12}\.cr\python-3.11.4-amd64.exe
PID 4572 wrote to memory of 3176 N/A C:\ProgramData\python-3.11.4-amd64.exe C:\Windows\Temp\{AEA80D93-BA7B-4864-8844-5E0FD9B80B12}\.cr\python-3.11.4-amd64.exe
PID 1204 wrote to memory of 2580 N/A C:\ProgramData\svhost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1204 wrote to memory of 2580 N/A C:\ProgramData\svhost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1204 wrote to memory of 4932 N/A C:\ProgramData\svhost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1204 wrote to memory of 4932 N/A C:\ProgramData\svhost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1204 wrote to memory of 64 N/A C:\ProgramData\svhost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1204 wrote to memory of 64 N/A C:\ProgramData\svhost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1204 wrote to memory of 932 N/A C:\ProgramData\svhost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1204 wrote to memory of 932 N/A C:\ProgramData\svhost.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1204 wrote to memory of 3284 N/A C:\ProgramData\svhost.exe C:\Windows\System32\schtasks.exe
PID 1204 wrote to memory of 3284 N/A C:\ProgramData\svhost.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\python-3.11.4-amd64.exe

"C:\Users\Admin\AppData\Local\Temp\python-3.11.4-amd64.exe"

C:\ProgramData\svhost.exe

"C:\ProgramData\svhost.exe"

C:\ProgramData\python-3.11.4-amd64.exe

"C:\ProgramData\python-3.11.4-amd64.exe"

C:\Windows\Temp\{AEA80D93-BA7B-4864-8844-5E0FD9B80B12}\.cr\python-3.11.4-amd64.exe

"C:\Windows\Temp\{AEA80D93-BA7B-4864-8844-5E0FD9B80B12}\.cr\python-3.11.4-amd64.exe" -burn.clean.room="C:\ProgramData\python-3.11.4-amd64.exe" -burn.filehandle.attached=540 -burn.filehandle.self=548

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

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

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

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

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

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

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

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

C:\Windows\System32\schtasks.exe

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

C:\ProgramData\svhost.exe

C:\ProgramData\svhost.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 8.8.8.8:53 api.telegram.org udp
US 8.8.8.8:53 udp

Files

memory/1808-0-0x00007FF89DDC3000-0x00007FF89DDC5000-memory.dmp

memory/1808-1-0x0000000000E30000-0x000000000269A000-memory.dmp

C:\ProgramData\svhost.exe

MD5 b075eb4cf71b6774184891552dfc9ccf
SHA1 80f66dfb79180890efb46df800634dd8e5553987
SHA256 09b0ea505f95446356de28fc0eae805f7f3f548e7a7df522c4a6805c50065663
SHA512 27830f1d0c807e39c2872f274fbc3b486e8d24e83c74de6b75285e9ac32a15b4ebc81d5bc6e2d98ded6e3986d250339218ce2a7e8e3778b0bba30b479e0cbb08

memory/1204-13-0x0000000000F00000-0x0000000000F16000-memory.dmp

memory/1204-14-0x00007FF89DDC0000-0x00007FF89E881000-memory.dmp

C:\ProgramData\python-3.11.4-amd64.exe

MD5 e4413bb7448cd13b437dffffba294ca0
SHA1 59dcc42113cd01346f7498a07c1265a4428b8864
SHA256 47be821c0f1825d90fc40f83a3ee3d3a691a3e16c8e21ac0cd56371362aaad50
SHA512 a48ee8992eee60a0d620dced71b9f96596f5dd510e3024015aca55884cdb3f9e2405734bfc13f3f40b79106a77bc442cce02ac4c8f5d16207448052b368fd52a

C:\Windows\Temp\{AEA80D93-BA7B-4864-8844-5E0FD9B80B12}\.cr\python-3.11.4-amd64.exe

MD5 73084cdc98f16f144aeaa7ce8966a76a
SHA1 40e8d66a0d13454b25513c8444c763cab00f2ab7
SHA256 6846e876b507121739c7325d83c6cef655748113f0ef1cb61759552dd76c9db4
SHA512 d674aa9c8ec2736fc4282d6ae7a15c87ef714c6d8f0ceef5213c6925abce8e152eed4fa39525b5aa7c5bcf806fe7bffbbbbd74e71f25fd9ff544825d407abb71

C:\Windows\Temp\{1A070584-DB1E-45F7-BE75-DCEBFACAECD9}\.ba\PythonBA.dll

MD5 6382ca6e9024097c5b662b0147c67e7c
SHA1 e1134801e1d2834c0a2be3f7d30bc6610760689f
SHA256 cbac589b8142d3c1df2353471e928b2823f59b66e06e521619052dbe6385055c
SHA512 0a38306ae961a64eb0da531ae3f7b6f438be94320b0e11caf1b05a700d49632556405431b175606d3bff13f89f658f3af00037c1cd752b659169086ce247d6bb

C:\Windows\Temp\{1A070584-DB1E-45F7-BE75-DCEBFACAECD9}\.ba\SideBar.png

MD5 888eb713a0095756252058c9727e088a
SHA1 c14f69f2bef6bc3e2162b4dd78e9df702d94cdb4
SHA256 79434bd1368f47f08acf6db66638531d386bf15166d78d9bfea4da164c079067
SHA512 7c59f4ada242b19c2299b6789a65a1f34565fed78730c22c904db16a9872fe6a07035c6d46a64ee94501fbcd96de586a8a5303ca22f33da357d455c014820ca0

memory/1204-82-0x00007FF89DDC0000-0x00007FF89E881000-memory.dmp

memory/2580-83-0x00000185AD6B0000-0x00000185AD6D2000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yh5qavmj.umu.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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 6d42b6da621e8df5674e26b799c8e2aa
SHA1 ab3ce1327ea1eeedb987ec823d5e0cb146bafa48
SHA256 5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c
SHA512 53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

MD5 9bc110200117a3752313ca2acaf8a9e1
SHA1 fda6b7da2e7b0175b391475ca78d1b4cf2147cd3
SHA256 c88e4bbb64f7fa31429ebe82c1cf07785c44486f37576f783a26ac856e02a4eb
SHA512 1f1af32aa18a8cbfcc65b0d4fb7e6ca2705f125eaa85789e981ee68b90c64522e954825abf460d4b4f97567715dfae8d9b0a25a4d54d10bc4c257c472f2e80fb

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

MD5 3b444d3f0ddea49d84cc7b3972abe0e6
SHA1 0a896b3808e68d5d72c2655621f43b0b2c65ae02
SHA256 ab075b491d20c6f66c7bd40b57538c1cfdaab5aac4715bfe3bbc7f4745860a74
SHA512 eb0ab5d68472ec42de4c9b6d84306d7bca3874be1d0ac572030a070f21a698432418068e1a6006ff88480be8c8f54c769dee74b2def403f734109dba7261f36b

memory/1204-132-0x00007FF89DDC0000-0x00007FF89E881000-memory.dmp