Malware Analysis Report

2024-11-16 13:35

Sample ID 240527-lqwn1agd58
Target XWorm.exe
SHA256 31800ebdfe2ec7b3847c064281aeaec2586cd8e76d88e662364dcee4c5ee45b3
Tags
xworm execution persistence rat trojan bootkit evasion upx
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

31800ebdfe2ec7b3847c064281aeaec2586cd8e76d88e662364dcee4c5ee45b3

Threat Level: Known bad

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

Malicious Activity Summary

xworm execution persistence rat trojan bootkit evasion upx

UAC bypass

Xworm

Detect Xworm Payload

Xworm family

Sets file execution options in registry

Command and Scripting Interpreter: PowerShell

Executes dropped EXE

Drops startup file

UPX packed file

Checks computer location settings

Looks up external IP address via web service

Writes to the Master Boot Record (MBR)

Checks whether UAC is enabled

Enumerates connected drives

Adds Run key to start application

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

Suspicious behavior: GetForegroundWindowSpam

System policy modification

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-27 09:44

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

2024-05-27 09:44

Reported

2024-05-27 09:47

Platform

win7-20231129-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\XWorm.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
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\svhost.lnk C:\Users\Admin\AppData\Local\Temp\XWorm.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk C:\Users\Admin\AppData\Local\Temp\XWorm.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Roaming\\svhost.exe" C:\Users\Admin\AppData\Local\Temp\XWorm.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\M: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\P: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\Q: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\T: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\K: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\L: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\X: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\Y: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\A: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\B: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\G: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\I: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\Z: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\E: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\J: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\S: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\U: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\V: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\W: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\H: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\N: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\O: C:\Windows\SysWOW64\WScript.exe N/A
File opened (read-only) \??\R: C:\Windows\SysWOW64\WScript.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A 0.tcp.eu.ngrok.io N/A 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\XWorm.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\XWorm.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A
Token: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: 33 N/A C:\Windows\SysWOW64\WScript.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\WScript.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1364 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 2228 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 2228 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 2228 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 2604 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 2888 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 2888 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 2888 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1364 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\schtasks.exe
PID 1364 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\schtasks.exe
PID 1364 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\schtasks.exe
PID 2016 wrote to memory of 1068 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2016 wrote to memory of 1068 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2016 wrote to memory of 1068 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2016 wrote to memory of 2864 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2016 wrote to memory of 2864 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2016 wrote to memory of 2864 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 1364 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Users\Admin\AppData\Local\Temp\lexpoa.exe
PID 1364 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Users\Admin\AppData\Local\Temp\lexpoa.exe
PID 1364 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Users\Admin\AppData\Local\Temp\lexpoa.exe
PID 1364 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Users\Admin\AppData\Local\Temp\lexpoa.exe
PID 2520 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\lexpoa.exe C:\Windows\SysWOW64\WScript.exe
PID 2520 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\lexpoa.exe C:\Windows\SysWOW64\WScript.exe
PID 2520 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\lexpoa.exe C:\Windows\SysWOW64\WScript.exe
PID 2520 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\lexpoa.exe C:\Windows\SysWOW64\WScript.exe
PID 2016 wrote to memory of 1496 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2016 wrote to memory of 1496 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe
PID 2016 wrote to memory of 1496 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Roaming\svhost.exe

Uses Task Scheduler COM API

persistence

Processes

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

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

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

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

C:\Windows\system32\taskeng.exe

taskeng.exe {2753353F-A2DB-458C-A3A3-62A13EBDBE33} S-1-5-21-3627615824-4061627003-3019543961-1000:SCFGBRBT\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\svhost.exe

C:\Users\Admin\AppData\Roaming\svhost.exe

C:\Users\Admin\AppData\Roaming\svhost.exe

C:\Users\Admin\AppData\Roaming\svhost.exe

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

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

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RarSFX0\play.vbs"

C:\Windows\system32\AUDIODG.EXE

C:\Windows\system32\AUDIODG.EXE 0x1e8

C:\Users\Admin\AppData\Roaming\svhost.exe

C:\Users\Admin\AppData\Roaming\svhost.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 0.tcp.eu.ngrok.io udp
DE 3.125.209.94:10438 0.tcp.eu.ngrok.io tcp
DE 3.125.209.94:10438 0.tcp.eu.ngrok.io tcp

Files

memory/1364-0-0x000007FEF5EE3000-0x000007FEF5EE4000-memory.dmp

memory/1364-1-0x00000000012B0000-0x00000000012F4000-memory.dmp

memory/1364-2-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

memory/2648-7-0x0000000002C70000-0x0000000002CF0000-memory.dmp

memory/2648-8-0x000000001B640000-0x000000001B922000-memory.dmp

memory/2648-9-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

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

MD5 bb4d4bd94d2b350c8ab178646df2d4b0
SHA1 4a3eb8d1cfdb7d5603e8150defdcdb6023e550a8
SHA256 b196c14f0eeb6fc48c6ad32733be44abe9e3d1b2f0052bb7b4788e5c80058f8e
SHA512 c9b3461eb857b59d49f64cf24ccd2e4e9d8143afce18224311ad9f58c713b6dfa0dca578f6ad7c7edf1f74cd9541a05edb7b38eed4b781df7b7da2876c30b8cf

memory/2228-15-0x000000001B690000-0x000000001B972000-memory.dmp

memory/2228-16-0x0000000002760000-0x0000000002768000-memory.dmp

C:\Users\Admin\AppData\Roaming\svhost.exe

MD5 b1534015cbe713e13efc7d016219ad61
SHA1 132526e2727cc3ada220c2ece52d5f6e59cc7ca6
SHA256 31800ebdfe2ec7b3847c064281aeaec2586cd8e76d88e662364dcee4c5ee45b3
SHA512 6422eba622c571fd12de0f3b0cb54b8ba3d3adf804302023b53b9363adb13518f9aa9b4828dd1435d994390a6b7a1f8123dc06d2a44f22a2e12b79e579da00d0

memory/1068-34-0x0000000000280000-0x00000000002C4000-memory.dmp

memory/1364-35-0x000007FEF5EE3000-0x000007FEF5EE4000-memory.dmp

memory/1364-36-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp

memory/2864-39-0x0000000000850000-0x0000000000894000-memory.dmp

memory/1364-40-0x000000001A730000-0x000000001A73C000-memory.dmp

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

MD5 1bad0e088a9f975004c2e8c28286e9a3
SHA1 890e7201e47a3f0c697bbe51cf2bfcab5de2f72a
SHA256 94b7776aaa8809f1799ef1cb5ddeb57bb6af67482f95203c0f385cc42100466c
SHA512 93110f321afc1d10b1129232b98b75663916b56fbd68411284da204e12a3c692cd50880abcdbf46077928107b6279ee718ce9724f30504bff152c9b7dc6337a2

C:\Users\Admin\AppData\Local\Temp\RarSFX0\play.vbs

MD5 943fbf2e322c3947a95e5b65f037830a
SHA1 6f542e4bce155627aacbd5ffa5d2676bd4ac582c
SHA256 80b5238faedc84f7a8fa7151b03c968fd6693c37e7f9e9a116614e5d18edb7bf
SHA512 72af92a519740c7238df7a0645f5891fd8a19b1af05d11acd855d096b493e79b0b1da69fbd1cbcf49d71cdc220d6ef44894c65dcbc56e877a71e44f2a2e66777

C:\Users\Admin\AppData\Local\Temp\RarSFX0\lucky1.wav

MD5 0a2821ba1b31a27a3fcb33c38f455c55
SHA1 03ba640291b1bd74f5468130407be97ee6b1aaa2
SHA256 31036d9a96e64187a451e75629669c54a22f4a62a434953b6295aa48e0f888e5
SHA512 e6ea6d01afbf3bef23701bdd620b6e2d09342b59a63e5c0473b5b5b81e7a8bf77f92dd7d1a334049466b047a7695a1441621e6fd83ac3ce83c90cf39d3c74fea

memory/1496-56-0x0000000000A30000-0x0000000000A74000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-27 09:44

Reported

2024-05-27 09:47

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\XWorm.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

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A

Xworm

trojan rat xworm

Sets file execution options in registry

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fumhjf.exe" C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe\Debugger = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fumhjf.exe" C:\Users\Admin\AppData\Local\Temp\fumhjf.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\XWorm.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:\Users\Admin\AppData\Local\Temp\XWorm.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk C:\Users\Admin\AppData\Local\Temp\XWorm.exe N/A

UPX packed file

upx
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
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
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
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

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:\\Users\\Admin\\AppData\\Roaming\\svhost.exe" C:\Users\Admin\AppData\Local\Temp\XWorm.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Java = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fumhjf.exe" C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A 0.tcp.eu.ngrok.io N/A N/A

Looks up external IP address via web service

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

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\fumhjf.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
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\XWorm.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
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N/A N/A C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\XWorm.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\XWorm.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\svhost.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1412 wrote to memory of 2028 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1412 wrote to memory of 2028 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1412 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1412 wrote to memory of 4252 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1412 wrote to memory of 2340 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1412 wrote to memory of 2340 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1412 wrote to memory of 4548 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1412 wrote to memory of 4548 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1412 wrote to memory of 4944 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\schtasks.exe
PID 1412 wrote to memory of 4944 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Windows\System32\schtasks.exe
PID 1412 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Users\Admin\AppData\Local\Temp\fumhjf.exe
PID 1412 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Users\Admin\AppData\Local\Temp\fumhjf.exe
PID 1412 wrote to memory of 4572 N/A C:\Users\Admin\AppData\Local\Temp\XWorm.exe C:\Users\Admin\AppData\Local\Temp\fumhjf.exe

System policy modification

evasion
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\HideFastUserSwitching = "1" C:\Users\Admin\AppData\Local\Temp\fumhjf.exe N/A

Uses Task Scheduler COM API

persistence

Processes

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

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

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

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

C:\Users\Admin\AppData\Roaming\svhost.exe

C:\Users\Admin\AppData\Roaming\svhost.exe

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

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

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

C:\Users\Admin\AppData\Local\Temp\fumhjf.exe explorer.exe

C:\Users\Admin\AppData\Roaming\svhost.exe

C:\Users\Admin\AppData\Roaming\svhost.exe

C:\Users\Admin\AppData\Roaming\svhost.exe

C:\Users\Admin\AppData\Roaming\svhost.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
BE 88.221.83.249:443 www.bing.com tcp
US 8.8.8.8:53 249.83.221.88.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 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
DE 18.192.31.165:10438 0.tcp.eu.ngrok.io tcp
US 8.8.8.8:53 165.31.192.18.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
DE 18.192.31.165:10438 0.tcp.eu.ngrok.io tcp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 16.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 226.162.46.104.in-addr.arpa udp

Files

memory/1412-0-0x00007FFDB7283000-0x00007FFDB7285000-memory.dmp

memory/1412-1-0x00000000003F0000-0x0000000000434000-memory.dmp

memory/1412-2-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

memory/2028-3-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

memory/2028-13-0x000001E5BE920000-0x000001E5BE942000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_42xndfa2.xxi.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2028-14-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

memory/2028-15-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

memory/2028-18-0x00007FFDB7280000-0x00007FFDB7D41000-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 6d3e9c29fe44e90aae6ed30ccf799ca8
SHA1 c7974ef72264bbdf13a2793ccf1aed11bc565dce
SHA256 2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d
SHA512 60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

MD5 9c740b7699e2363ac4ecdf496520ca35
SHA1 aa8691a8c56500d82c5fc8c35209bc6fe50ab1d9
SHA256 be96c91b62ba9ba7072ab89e66543328c9e4395150f9dbe8067332d94a3ecc61
SHA512 8885683f96353582eb871209e766e7eba1a72a2837ce27ea298b7b5b169621d1fa3fce25346b6bfd258b52642644234da9559d4e765a2023a5a5fc1f544cc7af

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

MD5 a2c8179aaa149c0b9791b73ce44c04d1
SHA1 703361b0d43ec7f669304e7c0ffbbfdeb1e484ff
SHA256 c1d30342a40a2b6e7553da30ceb85754d33820f6fbb3bbbed1ceb30d6390de4a
SHA512 2e201dd457d055baad86f68c15bcc7beb48d6dc2ffc10db7f304eb93f697e7b45991cbde857d25da2c9c60c23f3e13df8b5ed5809c1753737a23096e296cc9e3

C:\Users\Admin\AppData\Roaming\svhost.exe

MD5 b1534015cbe713e13efc7d016219ad61
SHA1 132526e2727cc3ada220c2ece52d5f6e59cc7ca6
SHA256 31800ebdfe2ec7b3847c064281aeaec2586cd8e76d88e662364dcee4c5ee45b3
SHA512 6422eba622c571fd12de0f3b0cb54b8ba3d3adf804302023b53b9363adb13518f9aa9b4828dd1435d994390a6b7a1f8123dc06d2a44f22a2e12b79e579da00d0

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

MD5 9adbea80ed3e5ac0877eb81ac6450d6b
SHA1 067de4b5df6fd064b1fa5d4506de582037b800d7
SHA256 9f088f09889692a06176433c3cdf8d46c65c2e3d3f44cc04ffc90b0a5c15960d
SHA512 197111ef2e5b342ee5e50261ee7b60c09047470e6b2122f0587ebd271e523cf0bf8490b18db4ea26750aadd51d8a913d702ecd109ba467eb61ecb7cd45f5a60d

memory/4572-69-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/1412-68-0x00007FFDB7283000-0x00007FFDB7285000-memory.dmp

memory/64-72-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/1412-77-0x00007FFDB7280000-0x00007FFDB7D41000-memory.dmp

memory/4572-92-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/4572-117-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/4572-118-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/4572-139-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/1412-152-0x0000000000BF0000-0x0000000000BFC000-memory.dmp

memory/4572-160-0x0000000000400000-0x00000000006D8000-memory.dmp

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

MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

memory/4572-181-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/4572-206-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/4572-227-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/4572-246-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/4572-265-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/4572-290-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/4572-310-0x0000000000400000-0x00000000006D8000-memory.dmp

memory/4572-331-0x0000000000400000-0x00000000006D8000-memory.dmp