Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-11-2022 14:14

General

  • Target

    91b7d74c915549719b90515f7dc82586b304f305b662b2336766611775303092.exe

  • Size

    1.4MB

  • MD5

    226d09965a7206e7e91212da80e08ffb

  • SHA1

    6decc224a3bb4614e4695c95ad2574eb2a13832c

  • SHA256

    91b7d74c915549719b90515f7dc82586b304f305b662b2336766611775303092

  • SHA512

    379005c6a479a8f14b3c3e4c5293350f6b870f75ee86f05d4b8cca04744685f9bba57af023897c4ab317d21e3451433064893b33f7c6a4f3a721b97c0d178d78

  • SSDEEP

    12288:DUrx89Suu+roPvsz+DSWutLMXa+jkm3HMpknqPx8ZrbXCnuH57pUoyuDOeu9eWKg:

Malware Config

Extracted

Family

warzonerat

C2

xls.medicelcoolers.cn:5200

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • WarzoneRat, AveMaria

    WarzoneRat is a native RAT developed in C++ with multiple plugins sold as a MaaS.

  • Warzone RAT payload 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91b7d74c915549719b90515f7dc82586b304f305b662b2336766611775303092.exe
    "C:\Users\Admin\AppData\Local\Temp\91b7d74c915549719b90515f7dc82586b304f305b662b2336766611775303092.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3540
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3932
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:1332
    • C:\Users\Admin\AppData\Local\Temp\91b7d74c915549719b90515f7dc82586b304f305b662b2336766611775303092.exe
      "C:\Users\Admin\AppData\Local\Temp\91b7d74c915549719b90515f7dc82586b304f305b662b2336766611775303092.exe"
      2⤵
        PID:4360
      • C:\Users\Admin\AppData\Local\Temp\91b7d74c915549719b90515f7dc82586b304f305b662b2336766611775303092.exe
        "C:\Users\Admin\AppData\Local\Temp\91b7d74c915549719b90515f7dc82586b304f305b662b2336766611775303092.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4516
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe"
          3⤵
            PID:2400
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3540 -s 1244
          2⤵
          • Program crash
          PID:2716
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3540 -ip 3540
        1⤵
          PID:224

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1332-136-0x0000000000000000-mapping.dmp

        • memory/2400-143-0x0000000000000000-mapping.dmp

        • memory/2400-144-0x0000000000800000-0x0000000000801000-memory.dmp

          Filesize

          4KB

        • memory/3540-133-0x0000000005970000-0x0000000005F14000-memory.dmp

          Filesize

          5.6MB

        • memory/3540-134-0x00000000054C0000-0x000000000555C000-memory.dmp

          Filesize

          624KB

        • memory/3540-132-0x00000000009C0000-0x0000000000B2A000-memory.dmp

          Filesize

          1.4MB

        • memory/3932-135-0x0000000000000000-mapping.dmp

        • memory/4360-137-0x0000000000000000-mapping.dmp

        • memory/4516-139-0x0000000000400000-0x0000000000554000-memory.dmp

          Filesize

          1.3MB

        • memory/4516-142-0x0000000000400000-0x0000000000554000-memory.dmp

          Filesize

          1.3MB

        • memory/4516-138-0x0000000000000000-mapping.dmp

        • memory/4516-141-0x0000000000400000-0x0000000000554000-memory.dmp

          Filesize

          1.3MB

        • memory/4516-145-0x0000000000400000-0x0000000000554000-memory.dmp

          Filesize

          1.3MB