Analysis

  • max time kernel
    118s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    23-09-2024 05:11

General

  • Target

    cc73160c4af628fe13b6c3e83e06c5565ff67818b4148c13025786779bd4e127.exe

  • Size

    413KB

  • MD5

    92c66c140509b75bae23f055d427afb4

  • SHA1

    1ecc289391ad3fcb89b3e84cbb15944a10444ae0

  • SHA256

    cc73160c4af628fe13b6c3e83e06c5565ff67818b4148c13025786779bd4e127

  • SHA512

    0b8c7e30af4f74ba7a49f106388172c025a008d0f7de13b88c0340ab0ac9b3611d66429257d65dee5459e5aebe78f472e1aa3e687009365de3e36ff166d4366d

  • SSDEEP

    6144:rBrkDIY0uBcDXK+KgEqBG7nkmfVRSG5rO4lNhCV6JRIc+9dIbCtWeJATEO:oNgYLkm9RSYbNhu6DS9dIbufWEO

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.

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

    Malicious Access or copy of Web Browser Credential store.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 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 2 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 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cc73160c4af628fe13b6c3e83e06c5565ff67818b4148c13025786779bd4e127.exe
    "C:\Users\Admin\AppData\Local\Temp\cc73160c4af628fe13b6c3e83e06c5565ff67818b4148c13025786779bd4e127.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1968
    • 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:1676
      • C:\ProgramData\ECFCBFBGDB.exe
        "C:\ProgramData\ECFCBFBGDB.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1876
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
            PID:1980
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            4⤵
            • System Location Discovery: System Language Discovery
            • Modifies system certificate store
            PID:804
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\FIECBFIDGDAK" & exit
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2532
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 10
            4⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:1256

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\ECFCBFBGDB.exe

      Filesize

      381KB

      MD5

      f5a1956973dce107d4c0b6267ce88870

      SHA1

      79a19513d7c9cff939f2881c4172a05dbaef735b

      SHA256

      7b794c5bdb820791f0359da90a9a4f258412b8feef9c6e6a0411f6aead9d3a04

      SHA512

      f42180c75c0ae8dc083c6fff98a66c0d875fadb400d7945816ea330a54777632a3a7752d3e78b90e45f58ed3d04d6708b1dcea51d82711356e6d14e405a7c579

    • C:\Users\Admin\AppData\Local\Temp\CabE16C.tmp

      Filesize

      70KB

      MD5

      49aebf8cbd62d92ac215b2923fb1b9f5

      SHA1

      1723be06719828dda65ad804298d0431f6aff976

      SHA256

      b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

      SHA512

      bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

    • C:\Users\Admin\AppData\Local\Temp\TarE18E.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/804-527-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/804-525-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/804-530-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/804-533-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/804-520-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/804-524-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/804-523-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/804-522-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/804-521-0x0000000000400000-0x0000000000464000-memory.dmp

      Filesize

      400KB

    • memory/1676-212-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-7-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-8-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-159-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-178-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-197-0x0000000020360000-0x00000000205BF000-memory.dmp

      Filesize

      2.4MB

    • memory/1676-9-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-231-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-10-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-18-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-362-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-381-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-424-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-443-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1676-5-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-6-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-15-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1676-13-0x0000000000400000-0x0000000000676000-memory.dmp

      Filesize

      2.5MB

    • memory/1876-499-0x0000000073640000-0x0000000073D2E000-memory.dmp

      Filesize

      6.9MB

    • memory/1876-532-0x0000000073640000-0x0000000073D2E000-memory.dmp

      Filesize

      6.9MB

    • memory/1876-497-0x000000007364E000-0x000000007364F000-memory.dmp

      Filesize

      4KB

    • memory/1876-498-0x0000000000B50000-0x0000000000BB0000-memory.dmp

      Filesize

      384KB

    • memory/1876-534-0x0000000073640000-0x0000000073D2E000-memory.dmp

      Filesize

      6.9MB

    • memory/1968-16-0x0000000074B80000-0x000000007526E000-memory.dmp

      Filesize

      6.9MB

    • memory/1968-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

      Filesize

      4KB

    • memory/1968-4-0x0000000074B80000-0x000000007526E000-memory.dmp

      Filesize

      6.9MB

    • memory/1968-2-0x0000000074B80000-0x000000007526E000-memory.dmp

      Filesize

      6.9MB

    • memory/1968-1-0x0000000001050000-0x00000000010B8000-memory.dmp

      Filesize

      416KB