Analysis

  • max time kernel
    86s
  • max time network
    158s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    29/12/2021, 01:26

General

  • Target
    macosx.dll
  • Size 263KB
  • Sample211229-btke2adabl
  • SHA256 b75c337a0fb7eb49ec34d6d313a612e93dc4180a8bf25f99fd7b10ea1077e8e1
  • MD5 SHA1 SHA512
Score
1/10

Malware Config

Signatures

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\macosx.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3116
    • C:\Windows\system32\cmd.exe
      cmd /c timeout 7 /nobreak & "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\macosx.dll", #1 YE4wU1wE UJzrG1wF & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1216
      • C:\Windows\system32\timeout.exe
        timeout 7 /nobreak
        3⤵
        • Delays execution with timeout.exe
        PID:1940
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\macosx.dll", #1 YE4wU1wE UJzrG1wF
        3⤵
          PID:2536

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

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          Downloads

          memory/3116-115-0x0000000180000000-0x0000000180020000-memory.dmp