Analysis

  • max time kernel
    149s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-11-2024 05:50

General

  • Target

    f7351352b9f84dc9c7b84d777fbc272ca7cd375e1e0dfe155b7eab87d14d4e4a.exe

  • Size

    64KB

  • MD5

    8134176e18b5250d91d40bb57e527d3e

  • SHA1

    21809d9f620329283297b4f81348426595744fa3

  • SHA256

    f7351352b9f84dc9c7b84d777fbc272ca7cd375e1e0dfe155b7eab87d14d4e4a

  • SHA512

    d9c450a1d9088d7d2b7fe23c12f9c2c9303b4c46a4d040db8e163cda1961daa3e2f5471354b57dcf47b55cc2f24ae6d7cba6e4635d3f292e950af0790f60bf97

  • SSDEEP

    768:vAUJmQCcmLCXQq6fsKiJYsIkjJVzqsVG5kuGKQLddOW/U4Wv84EFe:YUNHFKQbIkHvGMdOb4mse

Malware Config

Signatures

  • Windows security bypass 2 TTPs 4 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Drops file in Drivers directory 1 IoCs
  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Windows security modification 2 TTPs 4 IoCs
  • Indicator Removal: Clear Persistence 1 TTPs 1 IoCs

    remove IFEO.

  • Modifies WinLogon 2 TTPs 5 IoCs
  • Drops file in System32 directory 12 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 3 IoCs
  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:428
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1176
        • C:\Users\Admin\AppData\Local\Temp\f7351352b9f84dc9c7b84d777fbc272ca7cd375e1e0dfe155b7eab87d14d4e4a.exe
          "C:\Users\Admin\AppData\Local\Temp\f7351352b9f84dc9c7b84d777fbc272ca7cd375e1e0dfe155b7eab87d14d4e4a.exe"
          2⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2500
          • C:\Windows\SysWOW64\rmass.exe
            "C:\Windows\system32\rmass.exe"
            3⤵
            • Windows security bypass
            • Boot or Logon Autostart Execution: Active Setup
            • Drops file in Drivers directory
            • Event Triggered Execution: Image File Execution Options Injection
            • Executes dropped EXE
            • Loads dropped DLL
            • Windows security modification
            • Indicator Removal: Clear Persistence
            • Modifies WinLogon
            • Drops file in System32 directory
            • Drops file in Program Files directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2544
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2068

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Windows\SysWOW64\RECOVER32.DLL

        Filesize

        5KB

        MD5

        2b2c28a7a01f9584fe220ef84003427f

        SHA1

        5fc023df0b5064045eb8de7f2dbe26f07f6fec70

        SHA256

        9e00af53b1d0c0f5270d94a666d95aa7b4dcb9fea49487c210c055c9dcfcc9eb

        SHA512

        39192a8a91dec1abff25af8dac0cf39da4dfd51b3fb4f1ef0b4e776185d4280fbe8387c2ea778da7bbf2ce288b0bce4d23cbe8d9e87bbd250159044f5adbac78

      • C:\Windows\SysWOW64\ahuy.exe

        Filesize

        66KB

        MD5

        63d1f433fe3068fd3fa89d3ae3270f34

        SHA1

        7276b923095d4da6371c984151f7a37d7c112a74

        SHA256

        fa9768a1ffb8be18e047201bffbfba5e2273a5f039cac2825d7ce7e1d25f3e66

        SHA512

        4a5acb8d889eb4587ecea0c33c5c94311530910537b8980a2e7ead1e7cc8bb78bd01656ec80e830edad9700ef8e8b364c6aa7d425eacf73267b4a8e38772d6b1

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        67KB

        MD5

        96acf3bf1b716c3e8770e8a309dc5f13

        SHA1

        4887670493f6e3582df73ada8e4b99df35197744

        SHA256

        933a545f9924cb2a72387f551f119ac667ce8e746be28855f7e4215fb9bcb388

        SHA512

        d346bf4f0ee0fd936630afa54905e832fa5354d4f32747cc45912901491a28e7be0e7a969cf9b6682f126f766c85347244a30d9477153c08beadfd3d1c67b410

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        64KB

        MD5

        8134176e18b5250d91d40bb57e527d3e

        SHA1

        21809d9f620329283297b4f81348426595744fa3

        SHA256

        f7351352b9f84dc9c7b84d777fbc272ca7cd375e1e0dfe155b7eab87d14d4e4a

        SHA512

        d9c450a1d9088d7d2b7fe23c12f9c2c9303b4c46a4d040db8e163cda1961daa3e2f5471354b57dcf47b55cc2f24ae6d7cba6e4635d3f292e950af0790f60bf97

      • C:\Windows\System32\drivers\etc\hosts

        Filesize

        1KB

        MD5

        b10b13206b0f2cf3968050072f6979bf

        SHA1

        699db21ba9cecf3f13ac3d76e22cfa41aa94da80

        SHA256

        0eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4

        SHA512

        d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d

      • memory/2068-53-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/2500-0-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/2500-10-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/2544-12-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/2544-20-0x0000000000320000-0x0000000000332000-memory.dmp

        Filesize

        72KB

      • memory/2544-45-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB