Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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
  • 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 5 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 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:612
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:3520
        • C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.exe
          "C:\Users\Admin\AppData\Local\Temp\bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4.exe"
          2⤵
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3892
          • 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
            • 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:3580
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:4672

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Windows\SysWOW64\RECOVER32.DLL

        Filesize

        5KB

        MD5

        2b2c28a7a01f9584fe220ef84003427f

        SHA1

        5fc023df0b5064045eb8de7f2dbe26f07f6fec70

        SHA256

        9e00af53b1d0c0f5270d94a666d95aa7b4dcb9fea49487c210c055c9dcfcc9eb

        SHA512

        39192a8a91dec1abff25af8dac0cf39da4dfd51b3fb4f1ef0b4e776185d4280fbe8387c2ea778da7bbf2ce288b0bce4d23cbe8d9e87bbd250159044f5adbac78

      • C:\Windows\SysWOW64\ahuy.exe

        Filesize

        65KB

        MD5

        45341ff50ac8546cda773e2601d176e0

        SHA1

        5908991090540ccce6ebfced1ef7b93e326a03d3

        SHA256

        4dfc0cb4392d89bb9078a3e033921ee94986b3e5fd10129063829862c1a2210b

        SHA512

        fd985a50d68607b4eb3eaef37f637069fff506b8ef982df9920e537f732064215afdcd1a860330d72e177db6d20e06dd8ca120da8d0fe4307e273fd80531040b

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        66KB

        MD5

        97e3ca47af3fadc36029d34669acb46e

        SHA1

        3de5035be3d34143cfffe9f59e05ae041db1e2cb

        SHA256

        45da11d29fe6cadc7a82c63e119646e0129b7d508bb9162a727c23ea31aa23a0

        SHA512

        d02787ae0eaa4cbc48b78ccfc045f492b79ccd838e496bdeef16c7fec358951b71bf67191cf44db3116d64a5f7ed073a974931bdb48fb132e2411c7bf5a2c266

      • C:\Windows\SysWOW64\rmass.exe

        Filesize

        63KB

        MD5

        9166bbe6b2dbe4282017f49265dd44ca

        SHA1

        ca7f9b36a1e068278bfdf6d89d4703cb1a34d847

        SHA256

        bbac3dbdce8189c0f682845f9e89f4bc1d99fda035d004519f0ef3da0cf351f4

        SHA512

        d026686bb9a1af448f334c6065fafe8be9f19b485ca6c639872cc8a8153e7c7c619770ba5b716232293a75521a104463b64dc0d8d34653c3034055053eba11f1

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

        Filesize

        1KB

        MD5

        6f47b62de25d1745e296a06b3f98ed19

        SHA1

        a688bb35a4c8a5cc198985d624a1b5a6ac5b9f6f

        SHA256

        15c7218eb9cef5fa0573db657b15ce3a5f0e0609f1166df8098ca7152df505b4

        SHA512

        dea26fff8060f44bf20fe4fff2ecbacf428727f10c0f5886fb4813e28fce9cbc3d088337c84edd9857b18514c83f1bb1cf0f51518aaecef09f30e921f4d758d7

      • memory/3580-42-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/3892-0-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/3892-11-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/4672-17-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB