Analysis

  • max time kernel
    119s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    14-11-2024 02:24

General

  • Target

    40d218c3f19e478ed585f89ee2e3e67fa09945f90c4df0150cca37a261201bb8N.exe

  • Size

    24KB

  • MD5

    80551361d59d5eed8bdb86f25721d0a0

  • SHA1

    815c441cb53112961673dd9c1fbd54bda3fec2d4

  • SHA256

    40d218c3f19e478ed585f89ee2e3e67fa09945f90c4df0150cca37a261201bb8

  • SHA512

    c4d65fe0a63a418ccb1eadb325151f6d7d138080bb95301b4982c283ebcb4ba1088e7447579eee7e8939a5cd4888747713a98de1b5481e88d58dc7e124deb582

  • SSDEEP

    384:jIz4pE5UCpXa9/ElK4asLjnMM3dnKiXBkucF7Cr+RcQc41GM7yFaCDnJ6IUaNXHR:jIUpNppCPzXBkVF7Cr+RcQAEyouJ6Ij

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 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 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 1 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:1192
        • C:\Users\Admin\AppData\Local\Temp\40d218c3f19e478ed585f89ee2e3e67fa09945f90c4df0150cca37a261201bb8N.exe
          "C:\Users\Admin\AppData\Local\Temp\40d218c3f19e478ed585f89ee2e3e67fa09945f90c4df0150cca37a261201bb8N.exe"
          2⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:388
          • C:\Windows\SysWOW64\rmass.exe
            "C:\Windows\SysWOW64\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:2944
            • C:\Windows\SysWOW64\rmass.exe
              --k33p
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:2628

      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

        24KB

        MD5

        6c62a33c27a1571fe1ea04e263f32757

        SHA1

        d4359fd04943443944939995a596454886a9dede

        SHA256

        e9503d5a0b1af0edb56eaf38f3b4646c7b7e26aafd658598527b5dfa1eb9c954

        SHA512

        7527b0e973d7992494d1037ee8b49ab53762c4cc7bb279602a59ccbbf4d6a2aad155398c1295cfc7ad2d063589d5f466f56e8db275b4e5e3fadaa20075cbf137

      • C:\Windows\SysWOW64\ntdbg.exe

        Filesize

        25KB

        MD5

        93a56dda12efeded55b893dfe89dab47

        SHA1

        f328c3b1d6884f50b7e8625409ffcf7df1a4648d

        SHA256

        7111fbb073a89d1607488b211011d6d9e011017871b901377d9a545537bb2c44

        SHA512

        b1c77901bd5761fc2183ee9add60cee2a6237ded1246445b0309b3ab501322145e1968fe8f49eab7137ef142bccac6869d2d1795a73dca0128d8514674818eec

      • \Windows\SysWOW64\rmass.exe

        Filesize

        22KB

        MD5

        bcc593790f24b746c7c5d31125939353

        SHA1

        fe83202147da98d84ab0691412eb0fac75846b87

        SHA256

        b76d0b2eb575eaa9d330f4405ed7f22704f3057b20aa60a2a09e4e5ef65a6bd4

        SHA512

        191a3e7fb76022940208e174445aec508fa1e4bd03b6a01eebc7ab6b37401458d6dd140663bdc5bcee256a7eca45997c945949c7d4e4357615e2c9382ecc8bcb

      • memory/388-9-0x0000000000400000-0x0000000000403000-memory.dmp

        Filesize

        12KB

      • memory/388-5-0x0000000000020000-0x0000000000031000-memory.dmp

        Filesize

        68KB

      • memory/2628-54-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2944-10-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB

      • memory/2944-46-0x0000000000400000-0x0000000000411000-memory.dmp

        Filesize

        68KB