Analysis

  • max time kernel
    118s
  • max time network
    125s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    29/12/2021, 01:25

General

  • Target
    macosx.dll
  • Size 264KB
  • Sample211229-bszhkaedd3
  • SHA256 a06010d09b93b8cf46c397a30a15e7f4a163fddd7eaa18dc0eeb202b9f2560a5
  • 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:1672
    • C:\Windows\system32\cmd.exe
      cmd /c timeout 9 /nobreak & "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\macosx.dll", #1 YE4wU1wE UJzrG1wF & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4408
      • C:\Windows\system32\timeout.exe
        timeout 9 /nobreak
        3⤵
        • Delays execution with timeout.exe
        PID:4296
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\macosx.dll", #1 YE4wU1wE UJzrG1wF
        3⤵
          PID:3276

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

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          Downloads

          memory/1672-116-0x0000000180000000-0x0000000180020000-memory.dmp