Analysis

  • max time kernel
    20s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26-09-2024 02:11

General

  • Target

    a383f198e76031c2defef77e3b68119cce7eca4b64d3afcc477610c3399373aa.exe

  • Size

    403KB

  • MD5

    fdd34557ce266b92abb5f2c188bc0b31

  • SHA1

    6e3ed4a740842653f6029e2147652d779baa40aa

  • SHA256

    a383f198e76031c2defef77e3b68119cce7eca4b64d3afcc477610c3399373aa

  • SHA512

    313abe34a6d22e4e5aa66d45f7454207d671e214037932442641671beea0b1787f0cfb40988a5ba8e6f524af0ede974ed97b80ecb2888ed99a723403bc9eaa9d

  • SSDEEP

    12288:mPy6bZeOTlVMMIEY3kVQWk5ogbr/ojdiEO:aDJTHlIEYpWg3/o8t

Malware Config

Extracted

Family

vidar

Version

11

Botnet

58cd250b15e666e5f72fcf5caa6cb131

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 3 IoCs
  • Loads dropped DLL 9 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 5 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 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a383f198e76031c2defef77e3b68119cce7eca4b64d3afcc477610c3399373aa.exe
    "C:\Users\Admin\AppData\Local\Temp\a383f198e76031c2defef77e3b68119cce7eca4b64d3afcc477610c3399373aa.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2996
    • 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:2076
      • C:\ProgramData\BKJKEBGDHD.exe
        "C:\ProgramData\BKJKEBGDHD.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:1508
        • 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:1480
          • 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:2400
      • C:\ProgramData\BGIIDAEBGC.exe
        "C:\ProgramData\BGIIDAEBGC.exe"
        3⤵
          PID:2468
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            4⤵
              PID:264
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\GHJKEHJEGCFC" & exit
            3⤵
              PID:2444
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 10
                4⤵
                • Delays execution with timeout.exe
                PID:3040

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\CabC583.tmp

          Filesize

          70KB

          MD5

          49aebf8cbd62d92ac215b2923fb1b9f5

          SHA1

          1723be06719828dda65ad804298d0431f6aff976

          SHA256

          b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

          SHA512

          bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

        • C:\Users\Admin\AppData\Local\Temp\TarC5A5.tmp

          Filesize

          181KB

          MD5

          4ea6026cf93ec6338144661bf1202cd1

          SHA1

          a1dec9044f750ad887935a01430bf49322fbdcb7

          SHA256

          8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

          SHA512

          6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MFDBG_2d8366361e26406e9fc274ffbde71a7d.lnk

          Filesize

          1022B

          MD5

          c03d1c399ed6a60cbf2bed6ca65bb699

          SHA1

          aaeefe17b5ae5ad4ad4447731cc7d967da2ab59a

          SHA256

          76178c6f1d24d3159ccfc7ea193c820923a5de10b3f6599178749c622a152fdc

          SHA512

          6199c01d1ca0daca044e2ae5d8ad083933c20754329049052e0b4b730df2e61a271d4a6f420e4c1d281a1a782516d5645b65d544bd11769fa7ad080956603d13

        • \ProgramData\BGIIDAEBGC.exe

          Filesize

          368KB

          MD5

          0cee1d66332dec523210f62e479284b9

          SHA1

          33f950916e13a6ec654c52160ee47e88c64a5724

          SHA256

          0a6a258bfdb9b1947f2945b44e274ff3f06a7c5c733ff83c2a71c5f911fa9cc0

          SHA512

          603aa4834c6d3a9f3b6b1629eeb2108cecfd7192110f0cf948f2971957a9231ad9d405d8424e3a41b32a8ff415d8f84e55afdec38bf996703093084162d11972

        • \ProgramData\BKJKEBGDHD.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/264-599-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/264-597-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/264-596-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/264-593-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/264-591-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/264-589-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/264-587-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/264-585-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1480-528-0x00000000012C0000-0x00000000012CC000-memory.dmp

          Filesize

          48KB

        • memory/1508-497-0x0000000000870000-0x000000000087C000-memory.dmp

          Filesize

          48KB

        • memory/1508-496-0x0000000072E9E000-0x0000000072E9F000-memory.dmp

          Filesize

          4KB

        • memory/2076-6-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-16-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-230-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-196-0x0000000020520000-0x000000002077F000-memory.dmp

          Filesize

          2.4MB

        • memory/2076-177-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-361-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-380-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-423-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-442-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-158-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-4-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-5-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-3-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-7-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-12-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-211-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-8-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2076-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2076-15-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2400-537-0x0000000001330000-0x000000000133C000-memory.dmp

          Filesize

          48KB

        • memory/2468-563-0x00000000000C0000-0x0000000000120000-memory.dmp

          Filesize

          384KB

        • memory/2468-584-0x0000000002130000-0x0000000004130000-memory.dmp

          Filesize

          32.0MB

        • memory/2996-9-0x0000000074540000-0x0000000074C2E000-memory.dmp

          Filesize

          6.9MB

        • memory/2996-19-0x0000000074540000-0x0000000074C2E000-memory.dmp

          Filesize

          6.9MB

        • memory/2996-0-0x000000007454E000-0x000000007454F000-memory.dmp

          Filesize

          4KB

        • memory/2996-1-0x0000000000840000-0x00000000008A8000-memory.dmp

          Filesize

          416KB