Malware Analysis Report

2024-11-16 13:42

Sample ID 240531-vahxmsed5z
Target 095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21
SHA256 095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21
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

095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21

Threat Level: Known bad

The file 095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21 was found to be: Known bad.

Malicious Activity Summary

xworm persistence rat trojan

Xworm family

Xworm

Detect Xworm Payload

Checks computer location settings

Drops startup file

Executes dropped EXE

Adds Run key to start application

Looks up external IP address via web service

Unsigned PE

Enumerates physical storage devices

Uses Task Scheduler COM API

Creates scheduled task(s)

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-31 16:47

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 16:47

Reported

2024-05-31 16:49

Platform

win7-20240221-en

Max time kernel

136s

Max time network

136s

Command Line

"C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.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

Xworm

trojan rat xworm

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77client.lnk C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77client.lnk C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\$77client.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\$77client.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\$77client = "C:\\Users\\Admin\\AppData\\Roaming\\$77client.exe" C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.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\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\$77client.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\$77client.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe

"C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "$77client" /tr "C:\Users\Admin\AppData\Roaming\$77client.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {45A43B15-4B3A-4286-BD9C-43452F7D0E74} S-1-5-21-2297530677-1229052932-2803917579-1000:HKULBIBU\Admin:Interactive:[1]

C:\Users\Admin\AppData\Roaming\$77client.exe

C:\Users\Admin\AppData\Roaming\$77client.exe

C:\Users\Admin\AppData\Roaming\$77client.exe

C:\Users\Admin\AppData\Roaming\$77client.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 panel-slave.gl.at.ply.gg udp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp

Files

memory/2120-0-0x0000000077640000-0x00000000777E9000-memory.dmp

memory/2120-1-0x0000000000030000-0x0000000000040000-memory.dmp

memory/2120-2-0x0000000077640000-0x00000000777E9000-memory.dmp

memory/2120-7-0x0000000077640000-0x00000000777E9000-memory.dmp

C:\Users\Admin\AppData\Roaming\$77client.exe

MD5 f5247334d09885397d3350e17f026d25
SHA1 6da120a58893a2f57ebec91ce0e613e0039146cf
SHA256 095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21
SHA512 6ba58b64f1a9b4d69a6462eea7a632a92b3e9d435952bd3ce53749c1b416e9df8e0e0dd4e92a56dc00b059c721dfeab77279f8440d9a1e14ae796530a0bf78a5

memory/2340-11-0x00000000001F0000-0x0000000000200000-memory.dmp

memory/2120-13-0x000000001A5C0000-0x000000001A5CC000-memory.dmp

memory/1496-15-0x00000000008F0000-0x0000000000900000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-31 16:47

Reported

2024-05-31 16:49

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77client.lnk C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77client.lnk C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\$77client.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\$77client.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\$77client = "C:\\Users\\Admin\\AppData\\Roaming\\$77client.exe" C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.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\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\$77client.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\$77client.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe

"C:\Users\Admin\AppData\Local\Temp\095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21.exe"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "$77client" /tr "C:\Users\Admin\AppData\Roaming\$77client.exe"

C:\Users\Admin\AppData\Roaming\$77client.exe

C:\Users\Admin\AppData\Roaming\$77client.exe

C:\Users\Admin\AppData\Roaming\$77client.exe

C:\Users\Admin\AppData\Roaming\$77client.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 panel-slave.gl.at.ply.gg udp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp
US 8.8.8.8:53 19.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.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 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp
US 8.8.8.8:53 92.16.208.104.in-addr.arpa udp

Files

memory/2532-0-0x00007FFDB32A3000-0x00007FFDB32A5000-memory.dmp

memory/2532-1-0x00000000008E0000-0x00000000008F0000-memory.dmp

memory/2532-2-0x00007FFDB32A0000-0x00007FFDB3D61000-memory.dmp

memory/2532-7-0x00007FFDB32A3000-0x00007FFDB32A5000-memory.dmp

memory/2532-8-0x00007FFDB32A0000-0x00007FFDB3D61000-memory.dmp

C:\Users\Admin\AppData\Roaming\$77client.exe

MD5 f5247334d09885397d3350e17f026d25
SHA1 6da120a58893a2f57ebec91ce0e613e0039146cf
SHA256 095dee93672ae769a9dfa9dd190a0a93cca63db43546856138bac16828a15f21
SHA512 6ba58b64f1a9b4d69a6462eea7a632a92b3e9d435952bd3ce53749c1b416e9df8e0e0dd4e92a56dc00b059c721dfeab77279f8440d9a1e14ae796530a0bf78a5

memory/2468-11-0x00007FFDB32A0000-0x00007FFDB3D61000-memory.dmp

memory/2468-13-0x00007FFDB32A0000-0x00007FFDB3D61000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\$77client.exe.log

MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1