Analysis

  • max time kernel
    236s
  • max time network
    377s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/12/2022, 03:53

General

  • Target

    Setup.exe

  • Size

    761.7MB

  • MD5

    a89ee6c86aa1c1807af5e1d670254040

  • SHA1

    0d36fd5040565c50998bc940ce74ff1cb07975c1

  • SHA256

    c3181e842c62fd6c54881b3f176314dd9b652f79b418adc931077f1c5feefbb6

  • SHA512

    9284c2693c6e9740f86261d2526a03f4c3910aebec535b58027d8397da854f7dc3638e426d71341e364b34638bade473a45a3c5cbf3338d35099f31f988ee729

  • SSDEEP

    6144:B95cVr2/jceb1vJoM/GcM+sF+TY/xQ0VvM9+RQ5Pth6HVfjFNx1Jdns:BLGkIexqMOcVsFAcbR2+m1thkFNNZs

Malware Config

Extracted

Family

vidar

Version

56.1

Botnet

1375

C2

https://t.me/dishasta

https://steamcommunity.com/profiles/76561199441933804

Attributes
  • profile_id

    1375

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Loads dropped DLL 2 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3288
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3820
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 6
          4⤵
          • Delays execution with timeout.exe
          PID:4064
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1204 -s 644
      2⤵
      • Program crash
      PID:3912
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1204 -ip 1204
    1⤵
      PID:4660

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\mozglue.dll

      Filesize

      133KB

      MD5

      8f73c08a9660691143661bf7332c3c27

      SHA1

      37fa65dd737c50fda710fdbde89e51374d0c204a

      SHA256

      3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

      SHA512

      0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

    • C:\ProgramData\nss3.dll

      Filesize

      1.2MB

      MD5

      bfac4e3c5908856ba17d41edcd455a51

      SHA1

      8eec7e888767aa9e4cca8ff246eb2aacb9170428

      SHA256

      e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

      SHA512

      2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

    • memory/3288-133-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/3288-139-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/3288-140-0x0000000060900000-0x0000000060992000-memory.dmp

      Filesize

      584KB