Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-10-2022 18:12

General

  • Target

    288f6789c66e919dc29b90edfaac00a3a055d5a8ab5a54876773cc2fff62c911.exe

  • Size

    1011KB

  • MD5

    6e634020ae3ab6fd8434b2b387b8c56b

  • SHA1

    2cd0a0ea86c236e0d742703a2868604d1cb156c4

  • SHA256

    288f6789c66e919dc29b90edfaac00a3a055d5a8ab5a54876773cc2fff62c911

  • SHA512

    1c7380d4172322ca802008180de894501d7a6beadd03727218d9656990cae08263fe38fde90b2bdd347f4066d40c025a071550bb0cf58dbacdc95b39f57b9372

  • SSDEEP

    12288:rjS3Yvyn/0TQIW5EykhXG5RzXsqolsqlew:ru3Y5EE05d1ol1lew

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\288f6789c66e919dc29b90edfaac00a3a055d5a8ab5a54876773cc2fff62c911.exe
    "C:\Users\Admin\AppData\Local\Temp\288f6789c66e919dc29b90edfaac00a3a055d5a8ab5a54876773cc2fff62c911.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2128
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c reg ADD HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run /v freizer /t REG_SZ /d C:\WINDOWS\system32\freizer.exe /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5040
      • C:\Windows\SysWOW64\reg.exe
        reg ADD HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run /v freizer /t REG_SZ /d C:\WINDOWS\system32\freizer.exe /f
        3⤵
        • Adds Run key to start application
        PID:2444
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c reg ADD HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run /v svchost /t REG_SZ /d C:\WINDOWS\system32\svchost.exe /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5052
      • C:\Windows\SysWOW64\reg.exe
        reg ADD HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run /v svchost /t REG_SZ /d C:\WINDOWS\system32\svchost.exe /f
        3⤵
        • Adds Run key to start application
        PID:1696
    • C:\windows\temp\34133.exe
      "C:\windows\temp\34133.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:740

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\Temp\34133.exe

    Filesize

    24KB

    MD5

    4d3d7de2365df210da13a5b2a524817d

    SHA1

    85ce60c4604e92e9a87891dc3cf1530a9056f505

    SHA256

    a4bd4c37b948c965242a2e053fc4fc05ffee26f54a56199f39d551eee118b19e

    SHA512

    d9b2f7bfeb85983e1092773e5d06bf035bdaf3296ec930e86f6d4c2365a9f3c6ef06462c0e99f113a9f3b2f3e6b8a66bf0f2573374c3965fc335ff29d7ea498a

  • C:\windows\temp\34133.exe

    Filesize

    24KB

    MD5

    4d3d7de2365df210da13a5b2a524817d

    SHA1

    85ce60c4604e92e9a87891dc3cf1530a9056f505

    SHA256

    a4bd4c37b948c965242a2e053fc4fc05ffee26f54a56199f39d551eee118b19e

    SHA512

    d9b2f7bfeb85983e1092773e5d06bf035bdaf3296ec930e86f6d4c2365a9f3c6ef06462c0e99f113a9f3b2f3e6b8a66bf0f2573374c3965fc335ff29d7ea498a

  • memory/740-136-0x0000000000000000-mapping.dmp

  • memory/1696-134-0x0000000000000000-mapping.dmp

  • memory/2444-135-0x0000000000000000-mapping.dmp

  • memory/5040-132-0x0000000000000000-mapping.dmp

  • memory/5052-133-0x0000000000000000-mapping.dmp