Analysis

  • max time kernel
    92s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-05-2024 14:13

General

  • Target

    file.exe

  • Size

    3.0MB

  • MD5

    097a014e9066d6a4dd30e057e18eb511

  • SHA1

    2baa37cdc9b69e4083fdf468240cbacb1f2851ae

  • SHA256

    e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2

  • SHA512

    3409f75f0d073146410ebf31f487626e0c5fc01abb962f56b673256e72981f3e4f5c063e6690feeff1b2937bd14b453c38823242c9dee9e607fe63888d9ad627

  • SSDEEP

    49152:HzcK4Uk57r6mnw8fqFEIawGt2jlobG+FVSA7tffhpZ4F/3:HzvMWmnZSVawGtjHFVS8ffDZ4J

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

  • Detect Vidar Stealer 12 IoCs
  • Detect ZGRat V1 1 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Downloads MZ/PE file
  • .NET Reactor proctector 1 IoCs

    Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

  • Loads dropped DLL 1 IoCs
  • 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 1 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4204
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe
      2⤵
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3036
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MsBuild.exe" & rd /s /q "C:\ProgramData\CBAFIDAECBGC" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4364
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:5016
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4204 -s 764
      2⤵
      • Program crash
      PID:2044
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4204 -ip 4204
    1⤵
      PID:4248

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Protect544cd51a.dll
      Filesize

      742KB

      MD5

      544cd51a596619b78e9b54b70088307d

      SHA1

      4769ddd2dbc1dc44b758964ed0bd231b85880b65

      SHA256

      dfce2d4d06de6452998b3c5b2dc33eaa6db2bd37810d04e3d02dc931887cfddd

      SHA512

      f56d8b81022bb132d40aa78596da39b5c212d13b84b5c7d2c576bbf403924f1d22e750de3b09d1be30aea359f1b72c5043b19685fc9bf06d8040bfee16b17719

    • memory/3036-62-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/3036-75-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/3036-74-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/3036-63-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/3036-76-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/3036-17-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/3036-46-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/3036-45-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/3036-30-0x000000001B880000-0x000000001BADF000-memory.dmp
      Filesize

      2.4MB

    • memory/3036-28-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/3036-27-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/3036-24-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/3036-19-0x0000000000400000-0x0000000000646000-memory.dmp
      Filesize

      2.3MB

    • memory/4204-11-0x0000000074710000-0x0000000074EC0000-memory.dmp
      Filesize

      7.7MB

    • memory/4204-14-0x0000000074710000-0x0000000074EC0000-memory.dmp
      Filesize

      7.7MB

    • memory/4204-20-0x0000000074710000-0x0000000074EC0000-memory.dmp
      Filesize

      7.7MB

    • memory/4204-23-0x0000000074710000-0x0000000074EC0000-memory.dmp
      Filesize

      7.7MB

    • memory/4204-16-0x0000000074710000-0x0000000074EC0000-memory.dmp
      Filesize

      7.7MB

    • memory/4204-26-0x0000000074710000-0x0000000074EC0000-memory.dmp
      Filesize

      7.7MB

    • memory/4204-15-0x0000000074710000-0x0000000074EC0000-memory.dmp
      Filesize

      7.7MB

    • memory/4204-22-0x0000000074710000-0x0000000074EC0000-memory.dmp
      Filesize

      7.7MB

    • memory/4204-13-0x0000000074710000-0x0000000074EC0000-memory.dmp
      Filesize

      7.7MB

    • memory/4204-12-0x0000000074710000-0x0000000074EC0000-memory.dmp
      Filesize

      7.7MB

    • memory/4204-0-0x000000007471E000-0x000000007471F000-memory.dmp
      Filesize

      4KB

    • memory/4204-10-0x00000000050F0000-0x0000000005100000-memory.dmp
      Filesize

      64KB

    • memory/4204-4-0x0000000005110000-0x00000000052A2000-memory.dmp
      Filesize

      1.6MB

    • memory/4204-3-0x0000000074710000-0x0000000074EC0000-memory.dmp
      Filesize

      7.7MB

    • memory/4204-2-0x0000000005020000-0x00000000050BC000-memory.dmp
      Filesize

      624KB

    • memory/4204-1-0x0000000000380000-0x0000000000682000-memory.dmp
      Filesize

      3.0MB