Analysis

  • max time kernel
    194s
  • max time network
    301s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    30/05/2024, 23:04

General

  • Target

    6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e.exe

  • Size

    1.9MB

  • MD5

    d99dd53856f53be0f4bba64928e68f7d

  • SHA1

    cc40af39068479199202606b8eb3c1b234192a69

  • SHA256

    6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e

  • SHA512

    10c10a0c28fe112ae7c000079de7981f8d3f9ecb9ac4668ca692d73dda4e8ebfde711ed5a3ea69f1a55aa1c49028faa1dec50c240c409c971da4a5d7270379e5

  • SSDEEP

    49152:CdKfTn6vmJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTndtIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Signatures

  • Detect Vidar Stealer 8 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • 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
  • Checks processor information in registry 2 TTPs 1 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\6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e.exe
    "C:\Users\Admin\AppData\Local\Temp\6bddc3c6bbde8dc2b40607bec7bfb990a2ee59367fd428b2715eab93f85a155e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1900
    • C:\Users\Admin\AppData\Local\Temp\kat6CD3.tmp
      C:\Users\Admin\AppData\Local\Temp\kat6CD3.tmp
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:4852

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\kat6CD3.tmp

          Filesize

          861KB

          MD5

          66064dbdb70a5eb15ebf3bf65aba254b

          SHA1

          0284fd320f99f62aca800fb1251eff4c31ec4ed7

          SHA256

          6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

          SHA512

          b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

        • memory/1900-0-0x0000000000860000-0x0000000000861000-memory.dmp

          Filesize

          4KB

        • memory/1900-1-0x0000000003E60000-0x0000000003FA9000-memory.dmp

          Filesize

          1.3MB

        • memory/1900-9-0x0000000000400000-0x00000000005EC000-memory.dmp

          Filesize

          1.9MB

        • memory/4852-8-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/4852-4-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/4852-10-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/4852-16-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/4852-17-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/4852-19-0x000000001B6C0000-0x000000001B91F000-memory.dmp

          Filesize

          2.4MB

        • memory/4852-34-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB

        • memory/4852-35-0x0000000000400000-0x0000000000646000-memory.dmp

          Filesize

          2.3MB