Analysis

  • max time kernel
    135s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-06-2023 13:51

General

  • Target

    D7C08A686196D6C28D4F79588AEC7A0CA0123E35C57A9.exe

  • Size

    558KB

  • MD5

    e91cc2e537362de1efdbcfd78cc6c662

  • SHA1

    0537b130c780406acbb7ecfc85ce103f944f41c7

  • SHA256

    d7c08a686196d6c28d4f79588aec7a0ca0123e35c57a9b1362e9ac0e381c176b

  • SHA512

    25658cabfefb93ec031a7cb6837ce81028df3873f0c8191361a44c275573c77cdf038bf01b00e121e10565cf49768e45ba9442cb19f9772daaa50244b08ebd8f

  • SSDEEP

    12288:w8V18UCk9UOjfCTBNZtZYRD8pd0yyC74awwi5fK2:rf9/+3lKDcyVG4Jwi5fn

Malware Config

Extracted

Family

vidar

Version

9

Botnet

237

C2

http://hotticketsale.com/

Attributes
  • profile_id

    237

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\D7C08A686196D6C28D4F79588AEC7A0CA0123E35C57A9.exe
    "C:\Users\Admin\AppData\Local\Temp\D7C08A686196D6C28D4F79588AEC7A0CA0123E35C57A9.exe"
    1⤵
    • Checks computer location settings
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2036
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im D7C08A686196D6C28D4F79588AEC7A0CA0123E35C57A9.exe /f & erase C:\Users\Admin\AppData\Local\Temp\D7C08A686196D6C28D4F79588AEC7A0CA0123E35C57A9.exe & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4788
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im D7C08A686196D6C28D4F79588AEC7A0CA0123E35C57A9.exe /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3056
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2036 -s 1460
      2⤵
      • Program crash
      PID:2056
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2036 -ip 2036
    1⤵
      PID:4644

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    4
    T1081

    Discovery

    Query Registry

    3
    T1012

    System Information Discovery

    3
    T1082

    Collection

    Data from Local System

    4
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\nss3.dll
      Filesize

      486B

      MD5

      f3f165d1efefec1759382cc2bcbe3fa2

      SHA1

      1cca4c008818c25e8302e8dd304ae11135307b24

      SHA256

      00d385981aff16c45fba6de0429afd581e25830d679c73b9e50346f4e4517156

      SHA512

      9b73ce46b1fda969bcbcb9539cecae78e4d956e56bd4a6fa6c1c0e77eac3adda156ec40072a86505983edf3d247720eb335242a18f494a8c575645ed2158d59f

    • memory/2036-134-0x0000000000400000-0x0000000000520000-memory.dmp
      Filesize

      1.1MB

    • memory/2036-139-0x0000000000400000-0x0000000000520000-memory.dmp
      Filesize

      1.1MB

    • memory/2036-183-0x0000000000400000-0x0000000000520000-memory.dmp
      Filesize

      1.1MB