Malware Analysis Report

2024-11-16 13:42

Sample ID 240601-hymjhsec55
Target discord updater.exe
SHA256 a8a87fd10b2ec331e92792626073a6d42a9844663b80c680bfb8fabd27ccbcf9
Tags
xworm 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a8a87fd10b2ec331e92792626073a6d42a9844663b80c680bfb8fabd27ccbcf9

Threat Level: Known bad

The file discord updater.exe was found to be: Known bad.

Malicious Activity Summary

xworm persistence rat trojan

Detect Xworm Payload

Xworm family

Xworm

Drops startup file

Executes dropped EXE

Checks computer location settings

Adds Run key to start application

Looks up external IP address via web service

Enumerates physical storage devices

Unsigned PE

Creates scheduled task(s)

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-01 07:08

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

2024-06-01 07:08

Reported

2024-06-01 07:14

Platform

win7-20240215-en

Max time kernel

276s

Max time network

286s

Command Line

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\discord updater = "C:\\Users\\Admin\\AppData\\Roaming\\discord updater" C:\Users\Admin\AppData\Local\Temp\discord updater.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 behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1728 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\discord updater.exe C:\Windows\System32\schtasks.exe
PID 1728 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\discord updater.exe C:\Windows\System32\schtasks.exe
PID 1728 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\discord updater.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\discord updater.exe

"C:\Users\Admin\AppData\Local\Temp\discord updater.exe"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "discord updater" /tr "C:\Users\Admin\AppData\Roaming\discord updater"

C:\Windows\system32\taskeng.exe

taskeng.exe {9096D9FF-B294-4693-8850-4DC4021ED937} S-1-5-21-2248906074-2862704502-246302768-1000:GHPZRGFC\Admin:Interactive:[1]

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 panel-slave.gl.at.ply.gg udp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 8.8.8.8:53 panel-slave.gl.at.ply.gg udp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp

Files

memory/1728-0-0x000007FEF5B33000-0x000007FEF5B34000-memory.dmp

memory/1728-1-0x0000000000A00000-0x0000000000A10000-memory.dmp

memory/1728-2-0x000007FEF5B30000-0x000007FEF651C000-memory.dmp

memory/1728-6-0x000007FEF5B33000-0x000007FEF5B34000-memory.dmp

memory/1728-7-0x000007FEF5B30000-0x000007FEF651C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-01 07:08

Reported

2024-06-01 07:14

Platform

win10v2004-20240508-en

Max time kernel

298s

Max time network

300s

Command Line

"C:\Users\Admin\AppData\Local\Temp\discord updater.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\discord updater.exe N/A

Drops startup file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\discord updater = "C:\\Users\\Admin\\AppData\\Roaming\\discord updater" C:\Users\Admin\AppData\Local\Temp\discord updater.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 behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3872 wrote to memory of 404 N/A C:\Users\Admin\AppData\Local\Temp\discord updater.exe C:\Windows\System32\schtasks.exe
PID 3872 wrote to memory of 404 N/A C:\Users\Admin\AppData\Local\Temp\discord updater.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\discord updater.exe

"C:\Users\Admin\AppData\Local\Temp\discord updater.exe"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "discord updater" /tr "C:\Users\Admin\AppData\Roaming\discord updater"

C:\Users\Admin\AppData\Roaming\discord updater

"C:\Users\Admin\AppData\Roaming\discord updater"

C:\Users\Admin\AppData\Roaming\discord updater

"C:\Users\Admin\AppData\Roaming\discord updater"

C:\Users\Admin\AppData\Roaming\discord updater

"C:\Users\Admin\AppData\Roaming\discord updater"

C:\Users\Admin\AppData\Roaming\discord updater

"C:\Users\Admin\AppData\Roaming\discord updater"

C:\Users\Admin\AppData\Roaming\discord updater

"C:\Users\Admin\AppData\Roaming\discord updater"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 16.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 panel-slave.gl.at.ply.gg udp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp

Files

memory/3872-0-0x00007FF800FD3000-0x00007FF800FD5000-memory.dmp

memory/3872-1-0x00000000001F0000-0x0000000000200000-memory.dmp

memory/3872-2-0x00007FF800FD0000-0x00007FF801A91000-memory.dmp

memory/3872-6-0x00007FF800FD3000-0x00007FF800FD5000-memory.dmp

memory/3872-7-0x00007FF800FD0000-0x00007FF801A91000-memory.dmp

C:\Users\Admin\AppData\Roaming\discord updater

MD5 52cb1586ef4a1d08648d2c3deb2dba93
SHA1 24ffbd5cbb9ab104c95d60c0c7bc3cc209552ac5
SHA256 a8a87fd10b2ec331e92792626073a6d42a9844663b80c680bfb8fabd27ccbcf9
SHA512 d740049efd0eb697577481c0b52aaf8e588a574f40c620c0bd26dc0bbbabf98642d85c22b042555f965004f1c6f88e35cd94d7be4409f05bffe1ca7cff31a390

memory/4552-10-0x00007FF800FD0000-0x00007FF801A91000-memory.dmp

memory/4552-13-0x00007FF800FD0000-0x00007FF801A91000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\discord updater.log

MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1