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Resubmissions

26/02/2025, 21:51

250226-1qzg8at1ay 10

21/02/2025, 10:43

250221-msm1bazmfw 10

Analysis

  • max time kernel
    38s
  • max time network
    76s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/02/2025, 21:51

General

  • Target

    97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb.exe

  • Size

    192KB

  • MD5

    eb5d46bf72a013bfc7c018169eb1739b

  • SHA1

    f55680a34521ef07c2b8dedd1b74a9927990485a

  • SHA256

    97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb

  • SHA512

    b3e2d512c95913fe0ea1732f1e0bea2e849eb2ef98046380b01c76e6ec38a2ad5c00dcb66f90ad1f9d9c3ab97b81cd92318bdbfc84e2d408ed577902511b0c54

  • SSDEEP

    3072:NqRIVOgLw+7Evuahn9oVpORBqS3h1jHRWbDRaGZKMih4lMVHwz:NUIVOgLw+7Evu2nWsBqS3LjxWHR+Gh

Malware Config

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

  • Phobos family
  • Renames multiple (137) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Modifies Windows Firewall 2 TTPs 2 IoCs
  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops desktop.ini file(s) 3 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb.exe
    "C:\Users\Admin\AppData\Local\Temp\97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4488
    • C:\Users\Admin\AppData\Local\Temp\97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb.exe
      "C:\Users\Admin\AppData\Local\Temp\97cb4bf23ebc72c97f8216182eb44f9bd45f3f7fff0d1ef9c573e7df79956ddb.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5072
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1960
      • C:\Windows\system32\netsh.exe
        netsh advfirewall set currentprofile state off
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:4808
      • C:\Windows\system32\netsh.exe
        netsh firewall set opmode mode=disable
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:2128
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2304

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files\Common Files\microsoft shared\ClickToRun\C2R32.dll.id[C8946482-2408].[[email protected]].Caleb

      Filesize

      2.7MB

      MD5

      37279384d146587729dfc9cf20a3f20a

      SHA1

      4879d8575414307d3cde5d0733e3c3b74a5f9fb8

      SHA256

      ac34619f67191edb2bfbde7a3e9458d3a6ecb6380bb8ea5ffed09294dd19ca0d

      SHA512

      26cb10e9e66acadeaa1a90fe6593531b79ff9fa8c1f69ac1f662abc63a997095515b6bbffb3a0908aeb9af5f8f271b468ffe527f8b3bc27aadae8d8e570eda2b

    • memory/4488-0-0x00000000005E0000-0x0000000000610000-memory.dmp

      Filesize

      192KB

    • memory/4488-1-0x00000000005E0000-0x0000000000610000-memory.dmp

      Filesize

      192KB

    • memory/4488-2-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/4488-618-0x0000000000400000-0x0000000000432000-memory.dmp

      Filesize

      200KB

    • memory/4488-1759-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/4488-4540-0x0000000000400000-0x0000000000432000-memory.dmp

      Filesize

      200KB

    • memory/4488-6701-0x0000000000400000-0x0000000000432000-memory.dmp

      Filesize

      200KB

    • memory/4488-10552-0x0000000000400000-0x0000000000432000-memory.dmp

      Filesize

      200KB

    • memory/5072-12857-0x0000000000400000-0x0000000000432000-memory.dmp

      Filesize

      200KB