Analysis

  • max time kernel
    133s
  • max time network
    158s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    22/02/2024, 17:46

General

  • Target

    Rail.Route.v1.19.3/Rail.Route.v1.19.3/Redist/vcredist_x642.exe

  • Size

    6.9MB

  • MD5

    e74f5ac8f39ff69dddce07c8e1f7f943

  • SHA1

    f283c6f14fea54441697f8d4d1d33cb5a180c20c

  • SHA256

    4542bf0e828d4428260b2bc975da5bc25d69c060e54176dac1d14b5567ea67d1

  • SHA512

    893ba3836e03dc14e0cb7e3da6af1cdb436dbed4beb948ec7118816e3483bc7c68ef87e5a4b200588a0f8ddedd3a79843c77a7b1ad0cd1d31df64b43066f6ca9

  • SSDEEP

    196608:E9OaQ54oYY7jLwXjZ41OON2uk3bQWgtyccMEL:rz5x7jLXkmkU4cFe

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies registry class 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Rail.Route.v1.19.3\Rail.Route.v1.19.3\Redist\vcredist_x642.exe
    "C:\Users\Admin\AppData\Local\Temp\Rail.Route.v1.19.3\Rail.Route.v1.19.3\Redist\vcredist_x642.exe"
    1⤵
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4248
    • C:\Users\Admin\AppData\Local\Temp\Rail.Route.v1.19.3\Rail.Route.v1.19.3\Redist\vcredist_x642.exe
      "C:\Users\Admin\AppData\Local\Temp\Rail.Route.v1.19.3\Rail.Route.v1.19.3\Redist\vcredist_x642.exe" -burn.unelevated BurnPipe.{E3D12D67-373E-488C-A8B6-18791F2C915D} {3A7A27AB-9B76-4255-8C7F-10EE225ADDBC} 4248
      2⤵
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      PID:5028
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:4164
  • C:\Windows\system32\srtasks.exe
    C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1824

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\{1a63c099-febd-4eaf-83ad-a82ea4fdac49}\.ba1\logo.png

          Filesize

          1KB

          MD5

          d6bd210f227442b3362493d046cea233

          SHA1

          ff286ac8370fc655aea0ef35e9cf0bfcb6d698de

          SHA256

          335a256d4779ec5dcf283d007fb56fd8211bbcaf47dcd70fe60ded6a112744ef

          SHA512

          464aaab9e08de610ad34b97d4076e92dc04c2cdc6669f60bfc50f0f9ce5d71c31b8943bd84cee1a04fb9ab5bbed3442bd41d9cb21a0dd170ea97c463e1ce2b5b

        • C:\Users\Admin\AppData\Local\Temp\{1a63c099-febd-4eaf-83ad-a82ea4fdac49}\.ba1\wixstdba.dll

          Filesize

          117KB

          MD5

          a52e5220efb60813b31a82d101a97dcb

          SHA1

          56e16e4df0944cb07e73a01301886644f062d79b

          SHA256

          e7c8e7edd9112137895820e789baaaeca41626b01fb99fede82968ddb66d02cf

          SHA512

          d6565ba18b5b9795d6bde3ef94d8f7cd77bf8bb69ba3fe7adefb80fc7c5d888cdfdc79238d86a0839846aea4a1e51fc0caed3d62f7054885e8b15fad9f6c654e

        • C:\Users\Admin\AppData\Local\Temp\{1a63c099-febd-4eaf-83ad-a82ea4fdac49}\.be\vcredist_x64.exe

          Filesize

          452KB

          MD5

          b2e7e429bc02bf09eda25f8e159189d3

          SHA1

          38eaa08098ba11076349f91bb74ff99d09c9cebd

          SHA256

          c7be60dfc46d3ebfccae152141fdacf20ecc6d1754c5f8bc83abd4a13761f3d5

          SHA512

          517878967663eb5442158903cd3255516a702b1ab662b99769170e8d3d5e3e0d2f106f734fec72ede05f5251f4e3ea4da5a46a34a240a9f15e12fafbe39f0057