Analysis

  • max time kernel
    144s
  • max time network
    130s
  • platform
    windows10-1703_x64
  • resource
    win10-20231023-en
  • resource tags

    arch:x64arch:x86image:win10-20231023-enlocale:en-usos:windows10-1703-x64system
  • submitted
    11-12-2023 07:15

General

  • Target

    ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe

  • Size

    6.9MB

  • MD5

    7f954a9c2e42d807919bb868ad864a3b

  • SHA1

    86812994091f590abfe67452e5d4f12c50714a3e

  • SHA256

    ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b

  • SHA512

    f11a0353530eacb9ed9a03916789095b07825551b5f6ca0c877c54789c4f2f6758922c3084461ba8df62522db518910239d9a831434c5d318316cd5c284e68e5

  • SSDEEP

    196608:6RW8Bq+q3WGhRQY914E1DF+V3bm/LCGNq3eUeKP3gdVfzj:6QeqbhPK4DFY4CtOUYVfzj

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 63 IoCs
  • Runs net.exe
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe
    "C:\Users\Admin\AppData\Local\Temp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1032
    • C:\Users\Admin\AppData\Local\Temp\is-05O55.tmp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-05O55.tmp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp" /SL5="$5023A,6953145,68096,C:\Users\Admin\AppData\Local\Temp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4688
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:1900
        • C:\Program Files (x86)\WMAFormat\wmaformat.exe
          "C:\Program Files (x86)\WMAFormat\wmaformat.exe" -i
          3⤵
          • Executes dropped EXE
          PID:2112
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 11
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4292
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 11
            4⤵
              PID:2932
          • C:\Program Files (x86)\WMAFormat\wmaformat.exe
            "C:\Program Files (x86)\WMAFormat\wmaformat.exe" -s
            3⤵
            • Executes dropped EXE
            PID:3764

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Program Files (x86)\WMAFormat\wmaformat.exe

        Filesize

        1.4MB

        MD5

        34f5bd971a285b845239ae8963c5141e

        SHA1

        66b2543aaf285388ebce42d7b3bc743661008302

        SHA256

        0d60278965ecfc9ee430221b021c1d12dfe6bb5494614234a86d0d585c964ad0

        SHA512

        befe6b3f53a304e5e20da8046c546ca684758d07432aab09406d1b889a24d7f5a525b4920e229a221dc99464e62c6debac4f35ef0f89cf49a39da99914f218c3

      • C:\Program Files (x86)\WMAFormat\wmaformat.exe

        Filesize

        1.5MB

        MD5

        75a84fd86810b49363f4df762add7ecc

        SHA1

        d20b20d627635e7a8bd3918b90a89d6827155eaf

        SHA256

        c52e05c1a1963b288514073690340c40d86e8179303297b1da57ec842db63ca4

        SHA512

        87b85b90285aec0403931959d0f9c3afba2d163f1befc212681c6cf992f9bf1391d8f87f1df1eb9ea3c35e7cd95c477b66367f44c898de557fc0b94d9b76b365

      • C:\Program Files (x86)\WMAFormat\wmaformat.exe

        Filesize

        1.8MB

        MD5

        0280b00d7cf6a1d0e836f72f5e94c0fb

        SHA1

        8f21d39aa6137c758f73c378042dde4001006946

        SHA256

        5494dda0175037320250f0dca19188091efff397b7e3a7f181e449c4c216703c

        SHA512

        072cf3bc6c580035a8f0ae719b03662d762a994138f879d2c6380cd8aff71b1c55731fb99658dec6a23756ad8fbafa7122480a6cd8434788eee6047181b7920e

      • C:\Users\Admin\AppData\Local\Temp\is-05O55.tmp\ef521e7384d9aaaf9de76a92031905168be7406840d7fcd59e0f7ec09921834b.tmp

        Filesize

        687KB

        MD5

        f448d7f4b76e5c9c3a4eaff16a8b9b73

        SHA1

        31808f1ffa84c954376975b7cdb0007e6b762488

        SHA256

        7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

        SHA512

        f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

      • \Users\Admin\AppData\Local\Temp\is-QFCRP.tmp\_isetup\_iscrypt.dll

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

      • \Users\Admin\AppData\Local\Temp\is-QFCRP.tmp\_isetup\_isdecmp.dll

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

      • memory/1032-159-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/1032-0-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/2112-150-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2112-151-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2112-153-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-184-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-179-0x0000000000750000-0x00000000007EE000-memory.dmp

        Filesize

        632KB

      • memory/3764-156-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-207-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-161-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-204-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-165-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-166-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-169-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-172-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-175-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-158-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-178-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-200-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-187-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-188-0x0000000000750000-0x00000000007EE000-memory.dmp

        Filesize

        632KB

      • memory/3764-191-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-194-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3764-197-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4688-9-0x00000000001F0000-0x00000000001F1000-memory.dmp

        Filesize

        4KB

      • memory/4688-162-0x00000000001F0000-0x00000000001F1000-memory.dmp

        Filesize

        4KB

      • memory/4688-160-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB