Analysis

  • max time kernel
    144s
  • max time network
    134s
  • platform
    windows10-1703_x64
  • resource
    win10-20231020-en
  • resource tags

    arch:x64arch:x86image:win10-20231020-enlocale:en-usos:windows10-1703-x64system
  • submitted
    11-12-2023 08:09

General

  • Target

    66cfd6d99f2354095a4641f6cb2f25210a9b2117d86247a470be41b031583427.exe

  • Size

    6.9MB

  • MD5

    defc29d827aa1c44410da1ee31309bf1

  • SHA1

    b26ce25232b630c9f1ad7c7038386e65d4eefcee

  • SHA256

    66cfd6d99f2354095a4641f6cb2f25210a9b2117d86247a470be41b031583427

  • SHA512

    3dc515823ed12f8430bc091417d67b7f079cb10e043a5944d465705372660fec1a2aa280c278ee8c93201c8c3d7e2c4bb1642ef57392de3cefc1caf274b4cc94

  • SSDEEP

    98304:zCtQAsI29jHcxWjRTp6azZzB8hi4ZoEiAmP+xhctqd60dVADjhSF1O8lw3kBL7l7:YstjRJ/4ZoSQQhtd6sWDlSrM0BLRrzj

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\66cfd6d99f2354095a4641f6cb2f25210a9b2117d86247a470be41b031583427.exe
    "C:\Users\Admin\AppData\Local\Temp\66cfd6d99f2354095a4641f6cb2f25210a9b2117d86247a470be41b031583427.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2812
    • C:\Users\Admin\AppData\Local\Temp\is-37EP1.tmp\66cfd6d99f2354095a4641f6cb2f25210a9b2117d86247a470be41b031583427.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-37EP1.tmp\66cfd6d99f2354095a4641f6cb2f25210a9b2117d86247a470be41b031583427.tmp" /SL5="$901D8,6990075,68096,C:\Users\Admin\AppData\Local\Temp\66cfd6d99f2354095a4641f6cb2f25210a9b2117d86247a470be41b031583427.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3652
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:200
        • C:\Program Files (x86)\WMAFormat\wmaformat.exe
          "C:\Program Files (x86)\WMAFormat\wmaformat.exe" -i
          3⤵
          • Executes dropped EXE
          PID:1628
        • C:\Program Files (x86)\WMAFormat\wmaformat.exe
          "C:\Program Files (x86)\WMAFormat\wmaformat.exe" -s
          3⤵
          • Executes dropped EXE
          PID:4408
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 11
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4504
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 11
            4⤵
              PID:5084

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        1.8MB

        MD5

        524bfe0d470e2ab13742f92cdbfed508

        SHA1

        48101afa30091d7c96a380b5691ffacb5bc384df

        SHA256

        c4c9b495dc588973e4e7309756105795a1d3e0328fa19337a97f5b8a3ed45ea1

        SHA512

        50beaf5e63bdcfa1cff6fc3c4d88ba77e3ec55f6ae9d81163dea30b83f91fb672964460167a66730735d2fccfc8f92a209d272f69349b31b162abe939c7c504e

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

        Filesize

        1.2MB

        MD5

        e87d2e18cf522958d3c940812edf76e5

        SHA1

        6c9e0975be2c1782e53d2960454a6d3973629d49

        SHA256

        f0bf73051f0294bc52638b0115069e1a56500cb219fe8995dd12fa646b8ff8f4

        SHA512

        4d1171e3a92e52e35d0e8e5b5be53884c4fc6e5c8fc9a8bb172fd9b72a02bfaadf754957ece54a70b62266c20d09ae141d1555d89dc8783394160df1a1be5351

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

        Filesize

        983KB

        MD5

        d00c79804fc414d6129a2db77aebde8e

        SHA1

        4d7a3687ddc4d3f463e53dd450023a665679c98d

        SHA256

        c3230337647511cd13ab1ba989d7b11e989d8d62561dcba5c7b14de4505da419

        SHA512

        7bd09725a10399b3f17c43d46f6d4f49a193bd9a3ad458aad8b2a64a3ba590c3286405b160ae8ee1466aa2fb740e2fd12df503063ea9e9f6f8bdf9268eea6c6f

      • C:\Users\Admin\AppData\Local\Temp\is-37EP1.tmp\66cfd6d99f2354095a4641f6cb2f25210a9b2117d86247a470be41b031583427.tmp

        Filesize

        687KB

        MD5

        f448d7f4b76e5c9c3a4eaff16a8b9b73

        SHA1

        31808f1ffa84c954376975b7cdb0007e6b762488

        SHA256

        7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

        SHA512

        f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

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

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

      • memory/1628-150-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1628-151-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1628-154-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2812-159-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/2812-0-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/3652-162-0x00000000001F0000-0x00000000001F1000-memory.dmp

        Filesize

        4KB

      • memory/3652-160-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB

      • memory/3652-9-0x00000000001F0000-0x00000000001F1000-memory.dmp

        Filesize

        4KB

      • memory/4408-178-0x0000000000800000-0x000000000089E000-memory.dmp

        Filesize

        632KB

      • memory/4408-179-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-157-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-165-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-166-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-169-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-172-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-175-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-158-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-161-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-182-0x0000000000800000-0x000000000089E000-memory.dmp

        Filesize

        632KB

      • memory/4408-185-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-188-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-189-0x0000000000800000-0x000000000089E000-memory.dmp

        Filesize

        632KB

      • memory/4408-192-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-195-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-198-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-201-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-205-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4408-208-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB