Malware Analysis Report

2024-11-16 13:32

Sample ID 240620-wx8x1s1dmb
Target randomrat.exe
SHA256 1cdf902ed7bb8c13c450a3ce96c58b2b4a7ce3b2fe9393e213a4963a7a51f899
Tags
xworm 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

1cdf902ed7bb8c13c450a3ce96c58b2b4a7ce3b2fe9393e213a4963a7a51f899

Threat Level: Known bad

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

Malicious Activity Summary

xworm rat trojan

Detect Xworm Payload

Xworm family

Xworm

Executes dropped EXE

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-20 18:19

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

2024-06-20 18:19

Reported

2024-06-20 18:21

Platform

win7-20240611-en

Max time kernel

123s

Max time network

138s

Command Line

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

Executes dropped EXE

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

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

persistence execution
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\randomrat.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\randomrat.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\randomrat.exe N/A

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\System32\schtasks.exe

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

C:\Windows\system32\taskeng.exe

taskeng.exe {90A537B8-9885-434E-B4B8-7A0883A744A1} S-1-5-21-39690363-730359138-1046745555-1000:EILATWEW\Admin:Interactive:[1]

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

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

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 meet-showtimes.gl.at.ply.gg udp
US 147.185.221.20:33561 meet-showtimes.gl.at.ply.gg tcp
US 147.185.221.20:33561 meet-showtimes.gl.at.ply.gg tcp
US 147.185.221.20:33561 meet-showtimes.gl.at.ply.gg tcp
US 147.185.221.20:33561 meet-showtimes.gl.at.ply.gg tcp
US 147.185.221.20:33561 meet-showtimes.gl.at.ply.gg tcp

Files

memory/2200-0-0x000007FEF5453000-0x000007FEF5454000-memory.dmp

memory/2200-1-0x0000000000ED0000-0x0000000000EDE000-memory.dmp

memory/2200-3-0x000007FEF5450000-0x000007FEF5E3C000-memory.dmp

memory/2200-4-0x000007FEF5453000-0x000007FEF5454000-memory.dmp

memory/2200-5-0x000007FEF5450000-0x000007FEF5E3C000-memory.dmp

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

MD5 c217e7c614481badf0806b94948ff2f6
SHA1 608814152081125f115170c6caaa7edd71ea7169
SHA256 1cdf902ed7bb8c13c450a3ce96c58b2b4a7ce3b2fe9393e213a4963a7a51f899
SHA512 456fc73f8b25b21b44f4994d312d633272aa8a373160f8e8e8917c330a0378a7172f57c973511903b7efc625eb44671f04aa9ed109d266cd147c17703ed8076c

memory/2748-9-0x0000000001370000-0x000000000137E000-memory.dmp

memory/2480-11-0x0000000000300000-0x000000000030E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 18:19

Reported

2024-06-20 18:21

Platform

win10v2004-20240508-en

Max time kernel

145s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\randomrat.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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\randomrat.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

persistence execution
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\randomrat.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\randomrat.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\randomrat.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2904 wrote to memory of 412 N/A C:\Users\Admin\AppData\Local\Temp\randomrat.exe C:\Windows\System32\schtasks.exe
PID 2904 wrote to memory of 412 N/A C:\Users\Admin\AppData\Local\Temp\randomrat.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\System32\schtasks.exe

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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4200,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=4264 /prefetch:8

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

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

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 105.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 meet-showtimes.gl.at.ply.gg udp
US 147.185.221.20:33561 meet-showtimes.gl.at.ply.gg tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 35.15.31.184.in-addr.arpa udp
US 147.185.221.20:33561 meet-showtimes.gl.at.ply.gg tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 147.185.221.20:33561 meet-showtimes.gl.at.ply.gg tcp
US 147.185.221.20:33561 meet-showtimes.gl.at.ply.gg tcp
US 8.8.8.8:53 90.65.42.20.in-addr.arpa udp
US 147.185.221.20:33561 meet-showtimes.gl.at.ply.gg tcp
US 147.185.221.20:33561 meet-showtimes.gl.at.ply.gg tcp

Files

memory/2904-0-0x0000000000360000-0x000000000036E000-memory.dmp

memory/2904-1-0x00007FF939B93000-0x00007FF939B95000-memory.dmp

memory/2904-3-0x00007FF939B90000-0x00007FF93A651000-memory.dmp

memory/2904-4-0x00007FF939B90000-0x00007FF93A651000-memory.dmp

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

MD5 c217e7c614481badf0806b94948ff2f6
SHA1 608814152081125f115170c6caaa7edd71ea7169
SHA256 1cdf902ed7bb8c13c450a3ce96c58b2b4a7ce3b2fe9393e213a4963a7a51f899
SHA512 456fc73f8b25b21b44f4994d312d633272aa8a373160f8e8e8917c330a0378a7172f57c973511903b7efc625eb44671f04aa9ed109d266cd147c17703ed8076c

memory/2552-7-0x00007FF939B90000-0x00007FF93A651000-memory.dmp

memory/2552-9-0x00007FF939B90000-0x00007FF93A651000-memory.dmp

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

MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1