Analysis

  • max time kernel
    73s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/01/2023, 05:39

General

  • Target
    file.exe
  • Size 406KB
  • Sample230106-gcagdsed26
  • SHA256 922260358cff0b48e0098db3eb36065cfae990c0bddb75b21e2fa8ed9c1edb3e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

Version
  • 1.8

Botnet
  • 24

C2
  • https://t.me/year2023start

  • https://steamcommunity.com/profiles/76561199467421923

Attributes
  • profile_id

    24

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • 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.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • 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 AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:384
    • C:\ProgramData\95190406696957518195.exe
      "C:\ProgramData\95190406696957518195.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3176
      • C:\Users\Admin\AppData\Local\Temp\612397034-j0xYuta9G35m02YL.exe
        "C:\Users\Admin\AppData\Local\Temp\612397034-j0xYuta9G35m02YL.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:5100
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3628
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:5112
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 384 -s 2268
      2⤵
      • Program crash
      PID:4232
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 384 -ip 384
    1⤵
      PID:3232

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          95190406696957518195.exe

          • Path C:\ProgramData\95190406696957518195.exe
          • Size 927KB
          • SHA256 988e5097409fd40e34fc190ac8ffaa1c184102676fb1d413884ce793ff285b5a
          • MD5 SHA1 SHA512 SSDEEP

          95190406696957518195.exe

          • Path C:\ProgramData\95190406696957518195.exe
          • Size 927KB
          • SHA256 988e5097409fd40e34fc190ac8ffaa1c184102676fb1d413884ce793ff285b5a
          • MD5 SHA1 SHA512 SSDEEP

          mozglue.dll

          • Path C:\ProgramData\mozglue.dll
          • Size 133KB
          • SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
          • MD5 SHA1 SHA512 SSDEEP

          nss3.dll

          • Path C:\ProgramData\nss3.dll
          • Size 1.2MB
          • SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
          • MD5 SHA1 SHA512 SSDEEP

          612397034-j0xYuta9G35m02YL.exe

          • Path C:\Users\Admin\AppData\Local\Temp\612397034-j0xYuta9G35m02YL.exe
          • Size 471KB
          • SHA256 8bf31ca8003fdd13f7c29ce567ed9c1f9f87f8ce96b3fd9d0057a5cf2648a899
          • MD5 SHA1 SHA512 SSDEEP

          612397034-j0xYuta9G35m02YL.exe

          • Path C:\Users\Admin\AppData\Local\Temp\612397034-j0xYuta9G35m02YL.exe
          • Size 471KB
          • SHA256 8bf31ca8003fdd13f7c29ce567ed9c1f9f87f8ce96b3fd9d0057a5cf2648a899
          • MD5 SHA1 SHA512 SSDEEP

          memory/384-156-0x0000000002C97000-0x0000000002CC4000-memory.dmp

          memory/384-164-0x0000000002C97000-0x0000000002CC4000-memory.dmp

          memory/384-133-0x00000000030B0000-0x00000000030FC000-memory.dmp

          memory/384-132-0x0000000002C97000-0x0000000002CC4000-memory.dmp

          memory/384-135-0x0000000053330000-0x00000000533C2000-memory.dmp

          memory/384-157-0x0000000000400000-0x0000000002C57000-memory.dmp

          memory/384-134-0x0000000000400000-0x0000000002C57000-memory.dmp

          memory/384-165-0x0000000000400000-0x0000000002C57000-memory.dmp

          memory/3176-161-0x0000000000040000-0x000000000012E000-memory.dmp

          memory/5100-169-0x00000000001F0000-0x000000000026C000-memory.dmp

          memory/5100-170-0x0000000007500000-0x0000000007AA4000-memory.dmp

          memory/5100-171-0x0000000006FF0000-0x0000000007082000-memory.dmp

          memory/5100-172-0x0000000006FB0000-0x0000000006FBA000-memory.dmp

          memory/5100-173-0x0000000009F60000-0x0000000009FC6000-memory.dmp