Analysis

  • max time kernel
    122s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19-09-2024 22:33

General

  • Target

    3493ca80cb445940439578b4535ce772ced104d2de1c2ce35f203422d325508f.exe

  • Size

    293KB

  • MD5

    849e7d206dc382c53e6b1947f55e7ada

  • SHA1

    82e990d981279f85c29e6bb0bcaff8f340685964

  • SHA256

    3493ca80cb445940439578b4535ce772ced104d2de1c2ce35f203422d325508f

  • SHA512

    4c891fe3418ea839bf7b4610a5879432d83f5aad746aef3ceb5ff5c43e3ea01f0b0fcd820078f27a464c5e664dd62bc5bd73f1fbca519679cdf085143505d908

  • SSDEEP

    6144:+L3eSCmxdvcT6WUZJp1tQf+omj06nAP2mfAFyEO:sem/YU10KjAP2BFyEO

Malware Config

Extracted

Family

vidar

C2

https://t.me/edm0d

https://steamcommunity.com/profiles/76561199768374681

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0

Signatures

  • Detect Vidar Stealer 14 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Downloads MZ/PE file
  • Loads dropped DLL 2 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 2 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
  • Checks installed software on the system 1 TTPs

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

  • 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 4 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 4 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3493ca80cb445940439578b4535ce772ced104d2de1c2ce35f203422d325508f.exe
    "C:\Users\Admin\AppData\Local\Temp\3493ca80cb445940439578b4535ce772ced104d2de1c2ce35f203422d325508f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2104
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
        PID:2276
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        2⤵
          PID:2100
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          2⤵
            PID:2396
          • 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:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\GIEGHJEGHJKF" & exit
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:1652
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 10
                4⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:2128

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\CabAC39.tmp

          Filesize

          70KB

          MD5

          49aebf8cbd62d92ac215b2923fb1b9f5

          SHA1

          1723be06719828dda65ad804298d0431f6aff976

          SHA256

          b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

          SHA512

          bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

        • C:\Users\Admin\AppData\Local\Temp\TarAC5B.tmp

          Filesize

          181KB

          MD5

          4ea6026cf93ec6338144661bf1202cd1

          SHA1

          a1dec9044f750ad887935a01430bf49322fbdcb7

          SHA256

          8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

          SHA512

          6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

        • \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/2076-229-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-5-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-18-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-441-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-15-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2076-8-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-9-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-6-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-422-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-20-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-11-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-4-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-161-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-180-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-200-0x0000000020510000-0x000000002076F000-memory.dmp

          Filesize

          2.4MB

        • memory/2076-210-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-379-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2076-360-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/2104-1-0x00000000008B0000-0x00000000008FA000-memory.dmp

          Filesize

          296KB

        • memory/2104-2-0x0000000074150000-0x000000007483E000-memory.dmp

          Filesize

          6.9MB

        • memory/2104-0-0x000000007415E000-0x000000007415F000-memory.dmp

          Filesize

          4KB

        • memory/2104-7-0x0000000074150000-0x000000007483E000-memory.dmp

          Filesize

          6.9MB

        • memory/2104-16-0x0000000074150000-0x000000007483E000-memory.dmp

          Filesize

          6.9MB