Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-12-2023 12:37

General

  • Target

    5f7f1fc2e1504e54da9f34c8f255fef44b1af8da9b9cecb1a838521a1b16c754.exe

  • Size

    6.9MB

  • MD5

    e95be523f695f5ef92397cc813273786

  • SHA1

    b2c5441503ade3f5f0cff9f981da072cdf432335

  • SHA256

    5f7f1fc2e1504e54da9f34c8f255fef44b1af8da9b9cecb1a838521a1b16c754

  • SHA512

    eef4a189b1976346feb3898ba2af31bc775db48db8dd46a3c5d343e17ac35190af630ccc33f7aa8c7a8be17d28171bfa9960b1ea3ea7e1a4ab9cfab5eab0c7d8

  • SSDEEP

    196608:YxOlhkHxfDumIwWJfU1IzKkGjAqiuGIqOg9zj:7jkHxfKTnJjzKkRtF9zj

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\5f7f1fc2e1504e54da9f34c8f255fef44b1af8da9b9cecb1a838521a1b16c754.exe
    "C:\Users\Admin\AppData\Local\Temp\5f7f1fc2e1504e54da9f34c8f255fef44b1af8da9b9cecb1a838521a1b16c754.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3236
    • C:\Users\Admin\AppData\Local\Temp\is-90JBV.tmp\5f7f1fc2e1504e54da9f34c8f255fef44b1af8da9b9cecb1a838521a1b16c754.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-90JBV.tmp\5f7f1fc2e1504e54da9f34c8f255fef44b1af8da9b9cecb1a838521a1b16c754.tmp" /SL5="$801BA,6950053,68096,C:\Users\Admin\AppData\Local\Temp\5f7f1fc2e1504e54da9f34c8f255fef44b1af8da9b9cecb1a838521a1b16c754.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4440
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:1364
        • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
          "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -i
          3⤵
          • Executes dropped EXE
          PID:2408
        • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
          "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -s
          3⤵
          • Executes dropped EXE
          PID:3864
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 11
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3944
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 11
            4⤵
              PID:3136

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe

        Filesize

        1.4MB

        MD5

        c4d2bbd63adf4415b366be88adc9aec1

        SHA1

        edfdfd3f1a35efe50cec6a5ee10a427b95ce1cc2

        SHA256

        8549b6d2859a61f56cbb407c01e31a73f84d1afba0b4b818ff94830f44d687a3

        SHA512

        c0e867b6ec039db6791dd26b9e943a1d95cb50cafd83f2e36a39d56e69575a6eb489f6e0a587d9754408163c5edf3f57bd9fdd00e761ff0740aa3cd41b107ca8

      • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe

        Filesize

        759KB

        MD5

        dbdcd1e6c4982915423958dde1c2aeb9

        SHA1

        0a684944a5a9d2e7b95b09082cf8f7093951acae

        SHA256

        8bfa8b6d70e49ff918bf85147f0c1363448575ec9225f5832174323d7fe7e3e0

        SHA512

        5ec3f9e1c58af33c4bbecfa8c7eea3fe8542706f250a10c61a9724eec199b044f0f95f8c0a888181f911fabb8eb46cd3b31a585c82477d93d8b8e7e3854aafb7

      • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe

        Filesize

        8KB

        MD5

        3b81c27c787242b6d7470f6831bca42b

        SHA1

        e1de982858d5054a3bfc15d4ad98f780d7e49f38

        SHA256

        f18605a599c3e67e27c9798ddc6f94092bcb03db5979b95defc50d712fe486ec

        SHA512

        a9236654e692cc824294f4e3a91b9c719aa72458661ca0de7b4a7c1cf1f7782a4d36280bec68ba7dfda6c0cc866b3b050293913048c273e0b1d6a4adc2d7a066

      • C:\Users\Admin\AppData\Local\Temp\is-90JBV.tmp\5f7f1fc2e1504e54da9f34c8f255fef44b1af8da9b9cecb1a838521a1b16c754.tmp

        Filesize

        687KB

        MD5

        f448d7f4b76e5c9c3a4eaff16a8b9b73

        SHA1

        31808f1ffa84c954376975b7cdb0007e6b762488

        SHA256

        7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

        SHA512

        f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

      • C:\Users\Admin\AppData\Local\Temp\is-9AKS7.tmp\_isetup\_iscrypt.dll

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

      • C:\Users\Admin\AppData\Local\Temp\is-9AKS7.tmp\_isetup\_isdecmp.dll

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

      • memory/2408-150-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2408-152-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/2408-155-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3236-160-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/3236-2-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/3236-0-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/3864-162-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-179-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-158-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-209-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-206-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-203-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-166-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-167-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-170-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-173-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-176-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-159-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-180-0x0000000000840000-0x00000000008DE000-memory.dmp

        Filesize

        632KB

      • memory/3864-181-0x0000000000840000-0x00000000008DE000-memory.dmp

        Filesize

        632KB

      • memory/3864-186-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-189-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-190-0x0000000000840000-0x00000000008DE000-memory.dmp

        Filesize

        632KB

      • memory/3864-193-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-196-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3864-199-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4440-163-0x0000000000590000-0x0000000000591000-memory.dmp

        Filesize

        4KB

      • memory/4440-7-0x0000000000590000-0x0000000000591000-memory.dmp

        Filesize

        4KB

      • memory/4440-161-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB