Malware Analysis Report

2024-11-16 13:40

Sample ID 240531-qd62eshg6y
Target Injector2.exe
SHA256 1bee8362e0fffaa161de96775b92a2b6be47e65798251d0bfd4b82d134cfbd89
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

1bee8362e0fffaa161de96775b92a2b6be47e65798251d0bfd4b82d134cfbd89

Threat Level: Known bad

The file Injector2.exe was found to be: Known bad.

Malicious Activity Summary

xworm persistence rat trojan

Detect Xworm Payload

Xworm

Xworm family

Executes dropped EXE

Drops startup file

Checks computer location settings

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Creates scheduled task(s)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-31 13:09

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

2024-05-31 13:09

Reported

2024-05-31 13:12

Platform

win7-20240215-en

Max time kernel

149s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Injector2.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\Runtime Broker.lnk C:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.lnk C:\Users\Admin\AppData\Local\Temp\Injector2.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\Runtime Broker = "C:\\Users\\Admin\\AppData\\Roaming\\Runtime Broker.exe" C:\Users\Admin\AppData\Local\Temp\Injector2.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:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2824 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\Injector2.exe C:\Windows\System32\schtasks.exe
PID 2824 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\Injector2.exe C:\Windows\System32\schtasks.exe
PID 2824 wrote to memory of 2216 N/A C:\Users\Admin\AppData\Local\Temp\Injector2.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Injector2.exe

"C:\Users\Admin\AppData\Local\Temp\Injector2.exe"

C:\Windows\System32\schtasks.exe

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

C:\Windows\system32\taskeng.exe

taskeng.exe {A02FF248-53E1-4E8A-8356-C10C735F3CE8} S-1-5-21-2248906074-2862704502-246302768-1000:GHPZRGFC\Admin:Interactive:[1]

Network

Country Destination Domain Proto
US 8.8.8.8:53 rat234678235481254.ddns.net udp
DE 62.227.254.67:4782 rat234678235481254.ddns.net tcp

Files

memory/2824-0-0x000007FEF55E3000-0x000007FEF55E4000-memory.dmp

memory/2824-1-0x00000000012C0000-0x0000000001316000-memory.dmp

memory/2824-6-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

memory/2824-7-0x000007FEF55E3000-0x000007FEF55E4000-memory.dmp

memory/2824-8-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-31 13:09

Reported

2024-05-31 13:12

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Injector2.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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.lnk C:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.lnk C:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Runtime Broker = "C:\\Users\\Admin\\AppData\\Roaming\\Runtime Broker.exe" C:\Users\Admin\AppData\Local\Temp\Injector2.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:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Runtime Broker.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Runtime Broker.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Runtime Broker.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Injector2.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1340 wrote to memory of 4344 N/A C:\Users\Admin\AppData\Local\Temp\Injector2.exe C:\Windows\System32\schtasks.exe
PID 1340 wrote to memory of 4344 N/A C:\Users\Admin\AppData\Local\Temp\Injector2.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Injector2.exe

"C:\Users\Admin\AppData\Local\Temp\Injector2.exe"

C:\Windows\System32\schtasks.exe

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

C:\Users\Admin\AppData\Roaming\Runtime Broker.exe

"C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"

C:\Users\Admin\AppData\Roaming\Runtime Broker.exe

"C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"

C:\Users\Admin\AppData\Roaming\Runtime Broker.exe

"C:\Users\Admin\AppData\Roaming\Runtime Broker.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 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 rat234678235481254.ddns.net udp
DE 62.227.254.67:4782 rat234678235481254.ddns.net tcp
US 8.8.8.8:53 67.254.227.62.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 11.173.189.20.in-addr.arpa udp

Files

memory/1340-0-0x00007FFD7D5F3000-0x00007FFD7D5F5000-memory.dmp

memory/1340-1-0x0000000000660000-0x00000000006B6000-memory.dmp

memory/1340-6-0x00007FFD7D5F0000-0x00007FFD7E0B1000-memory.dmp

C:\Users\Admin\AppData\Roaming\Runtime Broker.exe

MD5 3e1b6c00c152ecd0945df66e71caa4c1
SHA1 6b4e5c1646cac905034b740205f6003a73e872dc
SHA256 1bee8362e0fffaa161de96775b92a2b6be47e65798251d0bfd4b82d134cfbd89
SHA512 82a8682d63cb88e74667b9a4824e8d832aa9116fd8854e9debc0912ce1a5437544db213e363a6cfbf42bd5a1b0ed6ba4f622803759ca66e6ab50c4ad34b4627b

memory/436-9-0x00007FFD7D5F0000-0x00007FFD7E0B1000-memory.dmp

memory/436-11-0x00007FFD7D5F0000-0x00007FFD7E0B1000-memory.dmp

memory/1340-12-0x00007FFD7D5F3000-0x00007FFD7D5F5000-memory.dmp

memory/1340-13-0x00007FFD7D5F0000-0x00007FFD7E0B1000-memory.dmp

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

MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1