Analysis

  • max time kernel
    149s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    13-11-2024 02:11

General

  • Target

    bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.exe

  • Size

    63KB

  • MD5

    9166bbe6b2dbe4282017f49265dd44ca

  • SHA1

    ca7f9b36a1e068278bfdf6d89d4703cb1a34d847

  • SHA256

    bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4

  • SHA512

    d026686bb9a1af448f334c6065fafe8be9f19b485ca6c639872cc8a8153e7c7c619770ba5b716232293a75521a104463b64dc0d8d34653c3034055053eba11f1

  • SSDEEP

    768:rAUJmQCcmLCXQq6fsKiJYsIkjJVzqsVG5kuGKQLddOW/34WvLTkXWj:sUNHFKQbIkHvGMdOo40TL

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:432
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1208
        • C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.exe
          "C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.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:1928
          • 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:2244
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2212

      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

        65KB

        MD5

        571cdf7cb706a32af53de1d899fdd55c

        SHA1

        c57d16ec196d17c4f8b48ecd7a8e225df94ddf1c

        SHA256

        4329446e3bc57cabcd0ebeb2a36e987d15dee0a0726fd4d2670a75a9745bebf3

        SHA512

        5dbe9437703ddc0cb116b0e3bbb7222166b6e5ef24efdb7313ac0170ebf203b577498d9aaa9db37b496cde9914d28f62440a9fd54adc3c0dcce1ed13c7135f99

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        66KB

        MD5

        1185944d1a2fa89b27d31fff2795429d

        SHA1

        d27bdcd1d0b328f53ed275dcfc3649f4b83f7a0c

        SHA256

        e7b86e394ea92fb06f41f5fd0045b203b0c5d7744096dead379c4b814bb91f05

        SHA512

        48df53779d1d9c271e2da476bbdb530531b691c356345a4b176d5484b2b1b4ec9eeef680c60a417d53bfcd09b9a53e35bca1beb217cecb43b2803fa82a30ba56

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

        Filesize

        1KB

        MD5

        b10b13206b0f2cf3968050072f6979bf

        SHA1

        699db21ba9cecf3f13ac3d76e22cfa41aa94da80

        SHA256

        0eef3217095cb97b695c434e74d6314bf9e869a013d6e9c88e58c34576a276b4

        SHA512

        d33bfd931be6676539507a69101d99fa4c5ef36b12422bd11f063b9b6a47b7444f6c4ad5f35e044714fdb872e96cd9fddf049e8329af1219483887f6ac5f4a5d

      • \Windows\SysWOW64\rmass.exe

        Filesize

        63KB

        MD5

        9166bbe6b2dbe4282017f49265dd44ca

        SHA1

        ca7f9b36a1e068278bfdf6d89d4703cb1a34d847

        SHA256

        bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4

        SHA512

        d026686bb9a1af448f334c6065fafe8be9f19b485ca6c639872cc8a8153e7c7c619770ba5b716232293a75521a104463b64dc0d8d34653c3034055053eba11f1

      • memory/1928-0-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/1928-10-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/2212-55-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/2244-15-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/2244-45-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB