Malware Analysis Report

2024-11-16 13:35

Sample ID 240526-tcb2fabg5x
Target ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526
SHA256 ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526
Tags
xworm execution 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

ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526

Threat Level: Known bad

The file ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526 was found to be: Known bad.

Malicious Activity Summary

xworm execution persistence rat trojan

Xworm family

Xworm

Detect Xworm Payload

Command and Scripting Interpreter: PowerShell

Drops startup file

Checks computer location settings

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-26 15:54

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

2024-05-26 15:54

Reported

2024-05-26 15:56

Platform

win7-20240508-en

Max time kernel

125s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.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 opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Chrome.lnk C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Chrome.lnk C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\Chrome = "C:\\ProgramData\\Chrome.exe" C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1916 wrote to memory of 2972 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 2972 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 2972 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 2588 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 2900 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 2900 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1916 wrote to memory of 2900 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe

"C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.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\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Chrome.exe'

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 character-estimate.gl.at.ply.gg udp
US 147.185.221.19:61192 character-estimate.gl.at.ply.gg tcp
US 147.185.221.19:61192 character-estimate.gl.at.ply.gg tcp
US 147.185.221.19:61192 character-estimate.gl.at.ply.gg tcp
US 147.185.221.19:61192 character-estimate.gl.at.ply.gg tcp
US 147.185.221.19:61192 character-estimate.gl.at.ply.gg tcp

Files

memory/1916-0-0x000007FEF6193000-0x000007FEF6194000-memory.dmp

memory/1916-1-0x0000000000BE0000-0x0000000000BFC000-memory.dmp

memory/2972-6-0x00000000029C0000-0x0000000002A40000-memory.dmp

memory/2972-7-0x000000001B880000-0x000000001BB62000-memory.dmp

memory/2972-8-0x0000000001F40000-0x0000000001F48000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

MD5 e94176206cabaebce068e4d2ea867e7a
SHA1 c2830e16b2b0ad195348cb5662de89c4bc9fd7f8
SHA256 af65742422c0aaf57a183eb0876cdd74ebb23158916195443925301e86c50ebf
SHA512 8a6f2e32f4fedde1d8d2994adc6b00cbd9a7e6684080684e8b85463a40768ac64f2baf9805faff43569450a717e63e09d04692b81a077641da860279538371e0

memory/2588-14-0x000000001B7F0000-0x000000001BAD2000-memory.dmp

memory/2588-15-0x0000000002860000-0x0000000002868000-memory.dmp

memory/1916-30-0x000000001B130000-0x000000001B1B0000-memory.dmp

memory/1916-31-0x000007FEF6193000-0x000007FEF6194000-memory.dmp

memory/1916-32-0x000000001B130000-0x000000001B1B0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-26 15:54

Reported

2024-05-26 15:56

Platform

win10v2004-20240508-en

Max time kernel

133s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Chrome.lnk C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Chrome.lnk C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Chrome = "C:\\ProgramData\\Chrome.exe" C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe N/A

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1396 wrote to memory of 3924 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1396 wrote to memory of 3924 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1396 wrote to memory of 4776 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1396 wrote to memory of 4776 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1396 wrote to memory of 2384 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1396 wrote to memory of 2384 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1396 wrote to memory of 920 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1396 wrote to memory of 920 N/A C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe

"C:\Users\Admin\AppData\Local\Temp\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.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\ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ca83463a0b08d1a04d19a0a28e11e6a8123753061a91e21dbf09a1aba55e1526.exe'

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Chrome.exe'

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 character-estimate.gl.at.ply.gg udp
US 147.185.221.19:61192 character-estimate.gl.at.ply.gg tcp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 147.185.221.19:61192 character-estimate.gl.at.ply.gg tcp
US 147.185.221.19:61192 character-estimate.gl.at.ply.gg tcp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 147.185.221.19:61192 character-estimate.gl.at.ply.gg tcp
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 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 147.185.221.19:61192 character-estimate.gl.at.ply.gg tcp

Files

memory/1396-0-0x00007FFE899C3000-0x00007FFE899C5000-memory.dmp

memory/1396-1-0x0000000000AF0000-0x0000000000B0C000-memory.dmp

memory/3924-2-0x0000029FAD1E0000-0x0000029FAD202000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_o05w5432.mi5.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3924-12-0x00007FFE899C0000-0x00007FFE8A481000-memory.dmp

memory/3924-13-0x00007FFE899C0000-0x00007FFE8A481000-memory.dmp

memory/3924-14-0x00007FFE899C0000-0x00007FFE8A481000-memory.dmp

memory/3924-15-0x00007FFE899C0000-0x00007FFE8A481000-memory.dmp

memory/3924-18-0x00007FFE899C0000-0x00007FFE8A481000-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 e243a38635ff9a06c87c2a61a2200656
SHA1 ecd95ed5bf1a9fbe96a8448fc2814a0210fa2afc
SHA256 af5782703f3f2d5a29fb313dae6680a64134db26064d4a321a3f23b75f6ca00f
SHA512 4418957a1b10eee44cf270c81816ae707352411c4f5ac14b6b61ab537c91480e24e0a0a2c276a6291081b4984c123cf673a45dcedb0ceeef682054ba0fc19cb4

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

MD5 110b59ca4d00786d0bde151d21865049
SHA1 557e730d93fdf944a0cad874022df1895fb5b2e2
SHA256 77f69011c214ea5a01fd2035d781914c4893aee66d784deadc22179eadfdf77f
SHA512 cb55ac6eca50f4427718bace861679c88b2fdfea94d30209e8d61ca73a6ce9f8c4b5334922d2660a829b0636d20cbdf3bae1497c920e604efe6c636019feb10e

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

MD5 ef72c47dbfaae0b9b0d09f22ad4afe20
SHA1 5357f66ba69b89440b99d4273b74221670129338
SHA256 692ec20c7039170fb199510f0436181fd155e6b4516d4d1c9e1675adf99aaa7f
SHA512 7514b6bc8dc39fa618223300be27cd535dc35b18c66b4a089e2302e72b3e0cac06d88a989fa1296feb386b3cbe2084019df6430c7f895071b76e04ce559a30b4

memory/1396-57-0x00007FFE899C0000-0x00007FFE8A481000-memory.dmp

memory/1396-58-0x00007FFE899C3000-0x00007FFE899C5000-memory.dmp

memory/1396-59-0x00007FFE899C0000-0x00007FFE8A481000-memory.dmp