Analysis

  • max time kernel
    235s
  • max time network
    297s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    27/06/2022, 14:01

General

  • Target
    b03a3100651c153d710c4f4778cb428c3723d936c428e757b7d17354243eacb9.exe
  • Size 991KB
  • Sample220627-rbthzsbgeq
  • SHA256 b03a3100651c153d710c4f4778cb428c3723d936c428e757b7d17354243eacb9
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Family
  • recordbreaker

C2
  • http://146.70.124.71

Signatures

  • RecordBreaker

    RecordBreaker is an information stealer capable of downloading and executing secondary payloads written in C++.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b03a3100651c153d710c4f4778cb428c3723d936c428e757b7d17354243eacb9.exe
    "C:\Users\Admin\AppData\Local\Temp\b03a3100651c153d710c4f4778cb428c3723d936c428e757b7d17354243eacb9.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3804
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Start-Sleep -Seconds 10;Start-Sleep -Seconds 10;
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2272
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 15
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2640
      • C:\Windows\SysWOW64\timeout.exe
        timeout 15
        3⤵
        • Delays execution with timeout.exe
        PID:1500
    • C:\Users\Admin\AppData\Local\Temp\b03a3100651c153d710c4f4778cb428c3723d936c428e757b7d17354243eacb9.exe
      C:\Users\Admin\AppData\Local\Temp\b03a3100651c153d710c4f4778cb428c3723d936c428e757b7d17354243eacb9.exe
      2⤵
        PID:3352

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/2272-138-0x0000000007F20000-0x000000000859A000-memory.dmp

          memory/2272-133-0x0000000005AC0000-0x00000000060E8000-memory.dmp

          memory/2272-134-0x00000000058F0000-0x0000000005912000-memory.dmp

          memory/2272-135-0x00000000060F0000-0x0000000006156000-memory.dmp

          memory/2272-136-0x0000000006160000-0x00000000061C6000-memory.dmp

          memory/2272-132-0x0000000002FA0000-0x0000000002FD6000-memory.dmp

          memory/2272-137-0x00000000068C0000-0x00000000068DE000-memory.dmp

          memory/2272-139-0x0000000006DC0000-0x0000000006DDA000-memory.dmp

          memory/3352-144-0x0000000000400000-0x0000000000412000-memory.dmp

          memory/3352-146-0x0000000000400000-0x0000000000412000-memory.dmp

          memory/3352-147-0x0000000000400000-0x0000000000412000-memory.dmp

          memory/3804-130-0x0000000000570000-0x000000000066E000-memory.dmp

          memory/3804-142-0x00000000052B0000-0x0000000005342000-memory.dmp