Analysis

  • max time kernel
    62s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-09-2024 19:06

General

  • Target

    6b6b6dcf20260d92fbf0fd6cea9d4bdabf29e047af19ad026b58c4aaf448a67e.exe

  • Size

    282KB

  • MD5

    f33b34d0de9bb27980bc99ea468c1181

  • SHA1

    b6ddd17ceed5372febacae3d2c3b95165053fc62

  • SHA256

    6b6b6dcf20260d92fbf0fd6cea9d4bdabf29e047af19ad026b58c4aaf448a67e

  • SHA512

    e6a7083752cafcc5264ee312cc4804b646c5f9788c24905a7df689c1520552b73ebc04ff1af5ef0c0c93c026cc3249738fa194caef75ba2f9af7ea1a3f72545e

  • SSDEEP

    6144:Ms6bXo+ImXuZeO59j7MLE/Ut67PmromTk8uHc+1BagPivpNEO:MnbLBXkZ7Bc67PmkR2g6/EO

Malware Config

Extracted

Family

vidar

C2

https://t.me/edm0d

https://steamcommunity.com/profiles/76561199768374681

http://147.45.126.10:80

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 22 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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • 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 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 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 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6b6b6dcf20260d92fbf0fd6cea9d4bdabf29e047af19ad026b58c4aaf448a67e.exe
    "C:\Users\Admin\AppData\Local\Temp\6b6b6dcf20260d92fbf0fd6cea9d4bdabf29e047af19ad026b58c4aaf448a67e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4584
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Checks computer location settings
      • 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:4492
      • C:\ProgramData\CFBAKKJDBK.exe
        "C:\ProgramData\CFBAKKJDBK.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4844
        • 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
          PID:3412
      • C:\ProgramData\KECGHIJDGC.exe
        "C:\ProgramData\KECGHIJDGC.exe"
        3⤵
          PID:1264
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            4⤵
              PID:3324
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\EHDGCGIDAKEB" & exit
            3⤵
              PID:840
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 10
                4⤵
                • Delays execution with timeout.exe
                PID:1072

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\CFBAKKJDBK.exe

          Filesize

          283KB

          MD5

          e1001c8649ac77faeb446d8ff91f50d2

          SHA1

          c2532c7b108ac61ca439cfd0a7992b26c89dc34b

          SHA256

          05d5d2f7e1270d38d47870c349d22a7e02c9682ba123b1b5e8ae1aa4e3554087

          SHA512

          a55bfa7eafca3306e51bd0e1100e46ea407f4451332fcce2772788a25e77d9b968a2ffc934cc05fc9117a1ab8ddade1f15e61cdd35341ee8d977721bb4fb178f

        • C:\ProgramData\DBKKFCBAKKFB\HJJJEC

          Filesize

          160KB

          MD5

          f310cf1ff562ae14449e0167a3e1fe46

          SHA1

          85c58afa9049467031c6c2b17f5c12ca73bb2788

          SHA256

          e187946249cd390a3c1cf5d4e3b0d8f554f9acdc416bf4e7111fff217bb08855

          SHA512

          1196371de08c964268c44103ccaed530bda6a145df98e0f480d8ee5ad58cb6fb33ca4c9195a52181fe864726dcf52e6a7a466d693af0cda43400a3a7ef125fad

        • C:\ProgramData\DBKKFCBAKKFB\HJJJEC

          Filesize

          114KB

          MD5

          e110cbe124e96c721e3839076f73aa99

          SHA1

          02c668c17c7fae5613073e9641bc9bcff96c65a0

          SHA256

          a793f3d212f395bfc8973231a22a6013c0e334443aa4172a8b5d611bb0f378a7

          SHA512

          8d91ff245f703e5dbee68085e9ca0de4b2fc044befcf79977f46bb8bfd908fa0e22ec0dd6a2b400e9ff447f888b550635ed82ebda18575d17b1f3d478a45f5dc

        • C:\ProgramData\DBKKFCBAKKFB\HJJJEC

          Filesize

          124KB

          MD5

          9618e15b04a4ddb39ed6c496575f6f95

          SHA1

          1c28f8750e5555776b3c80b187c5d15a443a7412

          SHA256

          a4cd72e529e60b5f74c50e4e5b159efaf80625f23534dd15a28203760b8b28ab

          SHA512

          f802582aa7510f6b950e3343b0560ffa9037c6d22373a6a33513637ab0f8e60ed23294a13ad8890935b02c64830b5232ba9f60d0c0fe90df02b5da30ecd7fa26

        • C:\ProgramData\KECGHIJDGC.exe

          Filesize

          321KB

          MD5

          94c5abd0eccd77846b4e0f641906bb19

          SHA1

          3fb0119c89952f61aee14abbe693a293ee916439

          SHA256

          863c177542f93d6e42ba2dc7633cec75da9515c39ed13915f63e9361f5cf7a6b

          SHA512

          4bbfce9f805c755380ff18cecc5a6cfeb9aeadf7140d5c612fca44cff923b57507ab01bd2b2f1389a97c0b3b41737e16732330980a9e3b02898b2c1271c7eae9

        • C:\ProgramData\mozglue.dll

          Filesize

          593KB

          MD5

          c8fd9be83bc728cc04beffafc2907fe9

          SHA1

          95ab9f701e0024cedfbd312bcfe4e726744c4f2e

          SHA256

          ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

          SHA512

          fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

        • C:\ProgramData\nss3.dll

          Filesize

          2.0MB

          MD5

          1cc453cdf74f31e4d913ff9c10acdde2

          SHA1

          6e85eae544d6e965f15fa5c39700fa7202f3aafe

          SHA256

          ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

          SHA512

          dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

        • memory/1264-141-0x0000000000950000-0x00000000009A4000-memory.dmp

          Filesize

          336KB

        • memory/3324-147-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/3324-143-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/3324-145-0x0000000000400000-0x0000000000458000-memory.dmp

          Filesize

          352KB

        • memory/3412-149-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/3412-119-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/3412-127-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/3412-182-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/3412-122-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/3412-166-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/3412-152-0x00000000224E0000-0x000000002273F000-memory.dmp

          Filesize

          2.4MB

        • memory/3412-151-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/3412-150-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/3412-183-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-31-0x0000000024BD0000-0x0000000024E2F000-memory.dmp

          Filesize

          2.4MB

        • memory/4492-11-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-63-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-29-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-28-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-4-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-94-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-95-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-46-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-87-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-45-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-9-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-62-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4492-96-0x0000000000400000-0x0000000000657000-memory.dmp

          Filesize

          2.3MB

        • memory/4584-7-0x0000000074AD0000-0x0000000075280000-memory.dmp

          Filesize

          7.7MB

        • memory/4584-0-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

          Filesize

          4KB

        • memory/4584-1-0x0000000000DD0000-0x0000000000E1A000-memory.dmp

          Filesize

          296KB

        • memory/4584-14-0x0000000074AD0000-0x0000000075280000-memory.dmp

          Filesize

          7.7MB

        • memory/4844-148-0x00000000737D0000-0x0000000073F80000-memory.dmp

          Filesize

          7.7MB

        • memory/4844-116-0x00000000737DE000-0x00000000737DF000-memory.dmp

          Filesize

          4KB

        • memory/4844-126-0x00000000737D0000-0x0000000073F80000-memory.dmp

          Filesize

          7.7MB

        • memory/4844-117-0x00000000008F0000-0x000000000093A000-memory.dmp

          Filesize

          296KB