Analysis

  • max time kernel
    18s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26-09-2024 02:22

General

  • Target

    bf0ec48573b3690d9f02c89a5d9db94e51e847b3a9243f7b9ff43214a725a019.exe

  • Size

    403KB

  • MD5

    38d89dee3e519cce0366a2ce70b7ec0d

  • SHA1

    98e75d05a6d4034a5f7e1e599490e5979be454d3

  • SHA256

    bf0ec48573b3690d9f02c89a5d9db94e51e847b3a9243f7b9ff43214a725a019

  • SHA512

    627343785b7f00337128ad35d4713fe42c555c9ca142755340e8ba188a55eb7bd0bca66ed549a6065a433c5fa14fcb63199f7b1f684275a1fca344088e6d6583

  • SSDEEP

    6144:S3EwTKSa5LjtkXODX+2Ivl2OQGCNGyBax3ntJfCkddx6yNfXypNHEApkEa4MX2zS:CEwhwLjtKOcbQGCgKq/fnkNkFpX22EO

Malware Config

Extracted

Family

vidar

Version

11

Botnet

d80be45a1eb6454ca916f92c36ebf67d

C2

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Signatures

  • Detect Vidar Stealer 14 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Drops startup file 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 13 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf0ec48573b3690d9f02c89a5d9db94e51e847b3a9243f7b9ff43214a725a019.exe
    "C:\Users\Admin\AppData\Local\Temp\bf0ec48573b3690d9f02c89a5d9db94e51e847b3a9243f7b9ff43214a725a019.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:792
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2132
      • C:\ProgramData\IJDHCBGHJE.exe
        "C:\ProgramData\IJDHCBGHJE.exe"
        3⤵
        • Drops startup file
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:768
        • C:\Users\Admin\AppData\Local\Temp\Malewmf\MFDBG.exe
          "C:\Users\Admin\AppData\Local\Temp\Malewmf\MFDBG.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1820
          • C:\Users\Admin\AppData\Local\Temp\Malewmf\FDWDZ.exe
            "C:\Users\Admin\AppData\Local\Temp\Malewmf\FDWDZ.exe" --checker
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2944
      • C:\ProgramData\GCGHIIDHCG.exe
        "C:\ProgramData\GCGHIIDHCG.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1868
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
            PID:2320
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\BFHJECAAAFHI" & exit
          3⤵
            PID:1864
            • C:\Windows\SysWOW64\timeout.exe
              timeout /t 10
              4⤵
              • Delays execution with timeout.exe
              PID:2748

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\GCGHIIDHCG.exe

        Filesize

        368KB

        MD5

        0cee1d66332dec523210f62e479284b9

        SHA1

        33f950916e13a6ec654c52160ee47e88c64a5724

        SHA256

        0a6a258bfdb9b1947f2945b44e274ff3f06a7c5c733ff83c2a71c5f911fa9cc0

        SHA512

        603aa4834c6d3a9f3b6b1629eeb2108cecfd7192110f0cf948f2971957a9231ad9d405d8424e3a41b32a8ff415d8f84e55afdec38bf996703093084162d11972

      • C:\Users\Admin\AppData\Local\Temp\CabEA32.tmp

        Filesize

        70KB

        MD5

        49aebf8cbd62d92ac215b2923fb1b9f5

        SHA1

        1723be06719828dda65ad804298d0431f6aff976

        SHA256

        b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

        SHA512

        bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

      • C:\Users\Admin\AppData\Local\Temp\TarEAE1.tmp

        Filesize

        181KB

        MD5

        4ea6026cf93ec6338144661bf1202cd1

        SHA1

        a1dec9044f750ad887935a01430bf49322fbdcb7

        SHA256

        8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

        SHA512

        6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MFDBG_b9342ffd28e44061b4ecaadaf1be272c.lnk

        Filesize

        1KB

        MD5

        86288b5c6084da66b68f5c477c9b5e25

        SHA1

        b6e0cfdc0b8aebfdac13f8759c35ff589a50abfc

        SHA256

        6ad79299e7a13a1a15c7fabaf0c719a5643db64aa84ad82c2eed608b39ad6cf2

        SHA512

        c281fe933c85501312d306c31f14622bf8d5cb9b08bf1baa019c170ee5b29d18051a52046bf8749f38aed473ee565c67abb75788500f3b82642f1376713733e8

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MFDBG_c35ec52818d248538631f1b3bea61c1f.lnk

        Filesize

        1KB

        MD5

        8d6733f96e7a050c98036c42cb81cf3b

        SHA1

        fa719e0f5c77c00907b7d10f13ae83536c6c46ed

        SHA256

        f31e37feb24c2d7a06cece0521c93c6acc8ad538373b0e0bbc61634564f8d895

        SHA512

        551b8adf5b8307e023d4746eb1feca529d031113cf3223d81de570a064ee11dbc9f28c7d845768d694f0ab10b69cba7d2c1caeb8ebefdf276f81bcd5728b9150

      • \ProgramData\IJDHCBGHJE.exe

        Filesize

        25KB

        MD5

        168087c84c5ff3664e5e2f4eec18d7dd

        SHA1

        639e9e87103f576617ed08c50910ca92fe5c8c5b

        SHA256

        2a7cdb79045658b9c02ebbb159e5b3680d7d6d832dbd757572f7d202c3fa935d

        SHA512

        89491261e1234f917964566def4b1a50505ba4c2eb90d14c19e2130d78fe65cd61c4bba685909109c7088b35e7fd48f6311ace7a0dd8c703a6d1b1d23d1a54bb

      • \ProgramData\mozglue.dll

        Filesize

        593KB

        MD5

        c8fd9be83bc728cc04beffafc2907fe9

        SHA1

        95ab9f701e0024cedfbd312bcfe4e726744c4f2e

        SHA256

        ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

        SHA512

        fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

      • \ProgramData\nss3.dll

        Filesize

        2.0MB

        MD5

        1cc453cdf74f31e4d913ff9c10acdde2

        SHA1

        6e85eae544d6e965f15fa5c39700fa7202f3aafe

        SHA256

        ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

        SHA512

        dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

      • memory/768-491-0x0000000072C4E000-0x0000000072C4F000-memory.dmp

        Filesize

        4KB

      • memory/768-492-0x00000000011B0000-0x00000000011BC000-memory.dmp

        Filesize

        48KB

      • memory/792-14-0x0000000074420000-0x0000000074B0E000-memory.dmp

        Filesize

        6.9MB

      • memory/792-0-0x000000007442E000-0x000000007442F000-memory.dmp

        Filesize

        4KB

      • memory/792-1-0x0000000000160000-0x00000000001C8000-memory.dmp

        Filesize

        416KB

      • memory/1820-523-0x0000000001310000-0x000000000131C000-memory.dmp

        Filesize

        48KB

      • memory/1868-558-0x0000000000F60000-0x0000000000FC0000-memory.dmp

        Filesize

        384KB

      • memory/2132-11-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-16-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-195-0x0000000020350000-0x00000000205AF000-memory.dmp

        Filesize

        2.4MB

      • memory/2132-206-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-225-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-157-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-5-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-356-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-375-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-418-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-437-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-6-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-13-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-176-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-7-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-3-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-8-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-4-0x0000000000400000-0x0000000000676000-memory.dmp

        Filesize

        2.5MB

      • memory/2132-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2320-562-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2320-564-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2320-568-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2320-573-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2320-576-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2320-574-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2320-570-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2320-566-0x0000000000400000-0x0000000000462000-memory.dmp

        Filesize

        392KB

      • memory/2944-532-0x0000000000BF0000-0x0000000000BFC000-memory.dmp

        Filesize

        48KB