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Analysis

  • max time kernel
    95s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/08/2024, 22:17

General

  • Target

    ransom.exe

  • Size

    3.1MB

  • MD5

    7b165424e046c129ed68d167aabaee01

  • SHA1

    0cde2e763fb1e21ea738b3255007ea6dff32f19f

  • SHA256

    6dec307953243ac4218ac5bb70fdec783cc40be380254a1402d31e21c14704fd

  • SHA512

    f0020dbfce6e441f0854b89007c646495ef288b84e3658efa330571cd9aa2a484cb6fb22e776156176a6e8e4fc1b41f1f7271deed33f992723ca38aacca474d7

  • SSDEEP

    49152:suwlfTeFiqtUaqTsuYYq1ibpA4f5uw41doGWo4:QeZndio

Malware Config

Signatures

  • Drops desktop.ini file(s) 7 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 4 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ransom.exe
    "C:\Users\Admin\AppData\Local\Temp\ransom.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4932
    • C:\Windows\system32\cmd.exe
      "cmd" /C "powershell -Command \" Stop-Process -Name explorer -Force Remove-Item -Path '$env:localappdata\IconCache.db' -ErrorAction SilentlyContinue Start-Process explorer \""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:512
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command \"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1220
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command "reagentc.exe /disable"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1440
      • C:\Windows\system32\ReAgentc.exe
        "C:\Windows\system32\ReAgentc.exe" /disable
        3⤵
        • Drops file in System32 directory
        • Drops file in Windows directory
        PID:2672

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    77d622bb1a5b250869a3238b9bc1402b

    SHA1

    d47f4003c2554b9dfc4c16f22460b331886b191b

    SHA256

    f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

    SHA512

    d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_twljcqu3.ejo.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1220-266-0x00007FFFAC1D3000-0x00007FFFAC1D5000-memory.dmp

    Filesize

    8KB

  • memory/1220-272-0x00000268FDBD0000-0x00000268FDBF2000-memory.dmp

    Filesize

    136KB

  • memory/1220-277-0x00007FFFAC1D0000-0x00007FFFACC91000-memory.dmp

    Filesize

    10.8MB

  • memory/1220-278-0x00007FFFAC1D0000-0x00007FFFACC91000-memory.dmp

    Filesize

    10.8MB

  • memory/1220-279-0x00007FFFAC1D0000-0x00007FFFACC91000-memory.dmp

    Filesize

    10.8MB

  • memory/1220-282-0x00007FFFAC1D0000-0x00007FFFACC91000-memory.dmp

    Filesize

    10.8MB

  • memory/1440-286-0x00007FFFAC020000-0x00007FFFACAE1000-memory.dmp

    Filesize

    10.8MB

  • memory/1440-303-0x00007FFFAC020000-0x00007FFFACAE1000-memory.dmp

    Filesize

    10.8MB