Analysis

  • max time kernel
    19s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26-09-2024 01:27

General

  • Target

    3b914f143432c17ca607ba232ba0122f78096dc04dd7ce3d297ed0036f3b1545.exe

  • Size

    403KB

  • MD5

    77011ba24d1088a963898abc72c6e129

  • SHA1

    08a84da40cb625471026568b2399538399b44f98

  • SHA256

    3b914f143432c17ca607ba232ba0122f78096dc04dd7ce3d297ed0036f3b1545

  • SHA512

    91e07652791eb55cc4684a97daa119cea2608e03b213675b43751aac9682955e6f36dc7b0ebf471778063182312abbc1dfb9925f95c29399daaeac614c933ba6

  • SSDEEP

    12288:uJ8GsZTOusN+VVrto1ma41z1esugf9xmolEO:uJ8vTOFN+VVZo1ma4B1eQ/met

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\3b914f143432c17ca607ba232ba0122f78096dc04dd7ce3d297ed0036f3b1545.exe
    "C:\Users\Admin\AppData\Local\Temp\3b914f143432c17ca607ba232ba0122f78096dc04dd7ce3d297ed0036f3b1545.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2532
    • 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:3056
      • C:\ProgramData\BKJJEBKKEH.exe
        "C:\ProgramData\BKJJEBKKEH.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:2160
        • 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:2144
          • 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:2948
      • C:\ProgramData\AEGHCFIDAK.exe
        "C:\ProgramData\AEGHCFIDAK.exe"
        3⤵
          PID:912
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            4⤵
              PID:1988
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\GHDAAKJEGCFC" & exit
            3⤵
              PID:2736
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 10
                4⤵
                • Delays execution with timeout.exe
                PID:2504

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\CabA630.tmp

          Filesize

          70KB

          MD5

          49aebf8cbd62d92ac215b2923fb1b9f5

          SHA1

          1723be06719828dda65ad804298d0431f6aff976

          SHA256

          b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

          SHA512

          bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

        • C:\Users\Admin\AppData\Local\Temp\TarA672.tmp

          Filesize

          181KB

          MD5

          4ea6026cf93ec6338144661bf1202cd1

          SHA1

          a1dec9044f750ad887935a01430bf49322fbdcb7

          SHA256

          8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

          SHA512

          6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MFDBG_85a077b5c4674d71a17fb8894a2ea562.lnk

          Filesize

          1022B

          MD5

          23488c9bf35dd4e55b4d3b46ace68b18

          SHA1

          d672a1837f8d4e26ee5c13daec44fe60bbe54d99

          SHA256

          0083fd1c5838be0e14daac056d4400553f2b7f0c6e56dde8036077d5d4199b9d

          SHA512

          e361d69f56f47438eb0f632fdfb4a6dea9c2f60af79ddbaafadea411254f3d99c5b33c06aafa784f2aaffa51f4254a9a88d7f347c19b5942c81f62a66ed408e9

        • \ProgramData\AEGHCFIDAK.exe

          Filesize

          368KB

          MD5

          0cee1d66332dec523210f62e479284b9

          SHA1

          33f950916e13a6ec654c52160ee47e88c64a5724

          SHA256

          0a6a258bfdb9b1947f2945b44e274ff3f06a7c5c733ff83c2a71c5f911fa9cc0

          SHA512

          603aa4834c6d3a9f3b6b1629eeb2108cecfd7192110f0cf948f2971957a9231ad9d405d8424e3a41b32a8ff415d8f84e55afdec38bf996703093084162d11972

        • \ProgramData\BKJJEBKKEH.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/912-553-0x0000000000E80000-0x0000000000EE0000-memory.dmp

          Filesize

          384KB

        • memory/912-564-0x00000000022E0000-0x00000000042E0000-memory.dmp

          Filesize

          32.0MB

        • memory/1988-577-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1988-576-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1988-567-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1988-569-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1988-579-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1988-573-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1988-565-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/1988-571-0x0000000000400000-0x0000000000462000-memory.dmp

          Filesize

          392KB

        • memory/2144-526-0x0000000001290000-0x000000000129C000-memory.dmp

          Filesize

          48KB

        • memory/2160-494-0x00000000734AE000-0x00000000734AF000-memory.dmp

          Filesize

          4KB

        • memory/2160-495-0x0000000001130000-0x000000000113C000-memory.dmp

          Filesize

          48KB

        • memory/2532-9-0x0000000074C60000-0x000000007534E000-memory.dmp

          Filesize

          6.9MB

        • memory/2532-1-0x0000000000DF0000-0x0000000000E58000-memory.dmp

          Filesize

          416KB

        • memory/2532-298-0x0000000074C60000-0x000000007534E000-memory.dmp

          Filesize

          6.9MB

        • memory/2532-0-0x0000000074C6E000-0x0000000074C6F000-memory.dmp

          Filesize

          4KB

        • memory/2948-535-0x0000000000ED0000-0x0000000000EDC000-memory.dmp

          Filesize

          48KB

        • memory/3056-197-0x0000000020270000-0x00000000204CF000-memory.dmp

          Filesize

          2.4MB

        • memory/3056-227-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-5-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-421-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-378-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-359-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-4-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-3-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-16-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-440-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-208-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-18-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-178-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-159-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-11-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-14-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-7-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-10-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3056-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB