Analysis

  • max time kernel
    153s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/10/2022, 20:37

General

  • Target

    build2.exe

  • Size

    321KB

  • MD5

    5fd8c38657bb9393bb4736c880675223

  • SHA1

    f3a03b2e75cef22262f6677e3832b6ad9327905c

  • SHA256

    2a5101345def285c8f52ad39f00261ba9e0375d3de73206d0b8c72ce3b6259c6

  • SHA512

    43c82f6db716792a770a3573a9d20cb69a2421ccc2bb875e57f4270d92c9289ee684deda19e3232c50f4675aaf86de173f73376a00f927a8d9847f60b8b732fe

  • SSDEEP

    6144:NC2lhHLjmWe5JU6B8l1I2pXNOOQ6ALktxN5BMFBl:NLlVWWxZXI2pdZ2ex9GP

Malware Config

Extracted

Family

vidar

Version

55

Botnet

517

C2

https://t.me/truewallets

https://mas.to/@zara99

http://116.203.10.3:80

Attributes
  • profile_id

    517

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • 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
  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\build2.exe
    "C:\Users\Admin\AppData\Local\Temp\build2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4508
    • C:\Users\Admin\AppData\Local\Temp\build2.exe
      "C:\Users\Admin\AppData\Local\Temp\build2.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:4588
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4588 -s 756
        3⤵
        • Program crash
        PID:4660
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4588 -ip 4588
    1⤵
      PID:4720

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • 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/4508-136-0x00000000005B0000-0x00000000006B0000-memory.dmp

            Filesize

            1024KB

          • memory/4508-137-0x00000000022E0000-0x000000000232F000-memory.dmp

            Filesize

            316KB

          • memory/4588-134-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/4588-138-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/4588-139-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/4588-140-0x0000000061E00000-0x0000000061EF3000-memory.dmp

            Filesize

            972KB

          • memory/4588-160-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB

          • memory/4588-161-0x0000000000400000-0x0000000000463000-memory.dmp

            Filesize

            396KB