Malware Analysis Report

2024-11-16 13:38

Sample ID 240530-bvt1vshe61
Target FROZENLOADER.lol.exe
SHA256 17fbbdbef331b237cd11a2744937e9c75e3b65f0180869a64b37bd3624a27394
Tags
xworm rat trojan execution persistence
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

17fbbdbef331b237cd11a2744937e9c75e3b65f0180869a64b37bd3624a27394

Threat Level: Known bad

The file FROZENLOADER.lol.exe was found to be: Known bad.

Malicious Activity Summary

xworm rat trojan execution persistence

Detect Xworm Payload

Xworm family

Xworm

Command and Scripting Interpreter: PowerShell

Checks computer location settings

Executes dropped EXE

Drops startup file

Looks up external IP address via web service

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 01:28

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

2024-05-30 01:28

Reported

2024-05-30 01:33

Platform

win7-20240221-en

Max time kernel

6s

Max time network

9s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
N/A N/A N/A N/A

Xworm

trojan rat xworm

Looks up external IP address via web service

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

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe

"C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp

Files

memory/2368-0-0x000007FEF5793000-0x000007FEF5794000-memory.dmp

memory/2368-1-0x0000000000E90000-0x0000000000EA0000-memory.dmp

memory/2368-2-0x000007FEF5790000-0x000007FEF617C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 01:28

Reported

2024-05-30 01:34

Platform

win10v2004-20240426-en

Max time kernel

20s

Max time network

25s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe N/A

Drops startup file

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Public\svchost.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Public\\svchost.exe" C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.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 use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.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\FROZENLOADER.lol.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Public\svchost.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4904 wrote to memory of 4872 N/A C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4904 wrote to memory of 4872 N/A C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4904 wrote to memory of 4896 N/A C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4904 wrote to memory of 4896 N/A C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4904 wrote to memory of 4840 N/A C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4904 wrote to memory of 4840 N/A C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4904 wrote to memory of 3732 N/A C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4904 wrote to memory of 3732 N/A C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4904 wrote to memory of 1800 N/A C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe C:\Windows\System32\schtasks.exe
PID 4904 wrote to memory of 1800 N/A C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\FROZENLOADER.lol.exe

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

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'FROZENLOADER.lol.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\svchost.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Public\svchost.exe"

C:\Users\Public\svchost.exe

C:\Users\Public\svchost.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa 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 73.31.126.40.in-addr.arpa udp

Files

memory/4904-1-0x00007FFD5DB13000-0x00007FFD5DB15000-memory.dmp

memory/4904-0-0x0000000000F40000-0x0000000000F50000-memory.dmp

memory/4904-2-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp

memory/4872-8-0x000001EF54100000-0x000001EF54122000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5aunbiis.elj.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4872-13-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp

memory/4872-14-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp

memory/4872-15-0x00007FFD5DB10000-0x00007FFD5E5D1000-memory.dmp

memory/4872-18-0x00007FFD5DB10000-0x00007FFD5E5D1000-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 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

MD5 9e0922edadce0b23c422114fa0e5fc1e
SHA1 7e7eec62d262b6ecda465673f1af59d239dbd160
SHA256 520ade0268c7c6f70f4a51fc9355bafb653c7b89cacd4b1b3c571a7c839bde25
SHA512 a35c8d720336181dcb44ee935070cce866b18c423adae1de19632bd6757f9d373a594ab875f4d520a446a5694537273e7026a9053aa276bc453ac9ca2c711c24

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

MD5 22310ad6749d8cc38284aa616efcd100
SHA1 440ef4a0a53bfa7c83fe84326a1dff4326dcb515
SHA256 55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf
SHA512 2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

C:\Users\Public\svchost.exe

MD5 8e256af90e17c9c3e2cd0b0b87cec7bd
SHA1 50471f49c19f18dfd5b426146bdc6e723aef7c00
SHA256 17fbbdbef331b237cd11a2744937e9c75e3b65f0180869a64b37bd3624a27394
SHA512 ef211d13d369a360ffb75fb6651494c16a3111d492f519c80eec7a884b94e655154ef3480b9b6214b2389400a47f23eabfbc962066b513f72cedc60887381ac6