Analysis

  • max time kernel
    70s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-02-2023 04:02

General

  • Target

    Setup.exe

  • Size

    463KB

  • MD5

    dcd26511183f2d7eb30678661a88b765

  • SHA1

    37157d94c22ddb5be80fb164fab68faede2711e6

  • SHA256

    8f0d2909498e32a88ea7a3873958edd5456e0d9d3e766ce7c8bcc303f67d8984

  • SHA512

    2bcdd37f94e3bddecaa27bb7abae837e3618debd9c91262d843b53d97e3f2f485ba586b3f7838da85a53ffa7d0887cfd496b87e366202073a7fcc233c355ba3d

  • SSDEEP

    12288:LscjpZYrzMP41INt4WxGaZG3oBHgOmZndxwUnM:LscVZYD1iGWxZiQcrxHM

Malware Config

Extracted

Family

vidar

Version

2.5

Botnet

408

Attributes
  • profile_id

    408

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Loads dropped DLL 2 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 5 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:2044
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:3412
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 1812
        3⤵
        • Program crash
        PID:4296
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3412 -ip 3412
    1⤵
      PID:1576

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    2
    T1081

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    2
    T1005

    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/3412-134-0x0000000000400000-0x0000000000472000-memory.dmp
      Filesize

      456KB

    • memory/3412-140-0x0000000000400000-0x0000000000472000-memory.dmp
      Filesize

      456KB

    • memory/3412-152-0x0000000050D90000-0x0000000050E83000-memory.dmp
      Filesize

      972KB

    • memory/3412-220-0x0000000000400000-0x0000000000472000-memory.dmp
      Filesize

      456KB

    • memory/3412-221-0x0000000000400000-0x0000000000472000-memory.dmp
      Filesize

      456KB