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Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/12/2023, 16:28

General

  • Target

    tuc5.exe

  • Size

    7.5MB

  • MD5

    ab36eeea8b8c643ee4a34f9cccb7331f

  • SHA1

    bf22b296375665dec5f926660aaef9e4c52da9cb

  • SHA256

    792fcca86eed9eb7f163070e74e06d7aea0ff8db5a7854fd8a054322b72b14db

  • SHA512

    d3b55c6aa150a4ca13be425f0482cfeda7c674bfe27d895648584465baf70cb1a8d9fb15da2ed4f7df9fb364e5eda07afc48e270e82d2caabeb54ac1a99ae5db

  • SSDEEP

    196608:SO78pimeIjZMmsj7bXzjl3iT1A9SG7ul2xdVNWiYmJE6RI6zj:r78pimNjMDzjl3dQAdVN1YyRPzj

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Unexpected DNS network traffic destination 3 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\tuc5.exe
    "C:\Users\Admin\AppData\Local\Temp\tuc5.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4556
    • C:\Users\Admin\AppData\Local\Temp\is-C4A2I.tmp\tuc5.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-C4A2I.tmp\tuc5.tmp" /SL5="$70062,7611198,68096,C:\Users\Admin\AppData\Local\Temp\tuc5.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3628
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:3664
        • C:\Program Files (x86)\PlayGIF\gifplayer.exe
          "C:\Program Files (x86)\PlayGIF\gifplayer.exe" -i
          3⤵
          • Executes dropped EXE
          PID:5056
        • C:\Program Files (x86)\PlayGIF\gifplayer.exe
          "C:\Program Files (x86)\PlayGIF\gifplayer.exe" -s
          3⤵
          • Executes dropped EXE
          PID:3880
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 11
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3980
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 11
            4⤵
              PID:1276

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Program Files (x86)\PlayGIF\gifplayer.exe

        Filesize

        1.7MB

        MD5

        381f21889f2d2a2ce2af0f0898eeb12a

        SHA1

        922594b0d6f19e9991b90c8ac8b6fad07dfc0e49

        SHA256

        cf363d5f150cc727899d7b025567b11651eef13dcddb4d9bb711c93d62c5d60f

        SHA512

        b57245c6067a1e60b827ab2e3dec98ba2acd6b9abb6344895940f07ff6cb26d6198f0f177585b0f29f11121b3cbfcb123ed0250f7250b6ef91e1d073e47790c6

      • C:\Program Files (x86)\PlayGIF\gifplayer.exe

        Filesize

        812KB

        MD5

        fbb7a396f72ab46b4d6363aefa162161

        SHA1

        df082b35beb82a8f4f664b582cfa871cb34dc41b

        SHA256

        02dced54be8fb5c8b2d749d565ba0f5a668a56b3bf9194c56f277376cb72ae4a

        SHA512

        db416735c1d3c2ea7257e00d7eec8d42dd519458ac4e167aa1dcf57b137e887586547c7648054ef2790e25bac85bdbac69c6dc4164caca4a6f8ad21e08b18f61

      • C:\Program Files (x86)\PlayGIF\gifplayer.exe

        Filesize

        238KB

        MD5

        b0a305d8f94c48691dc47ac20471f3a2

        SHA1

        42c6d1088fc88fa40b8810e6c06ec065a3cf20ae

        SHA256

        f89f7ab633b30285f7f5d3ff95e4d23fdb9cdcb34a7eda5c56dcba6f709d9688

        SHA512

        c6878c8525e25e9b256526c4adeda30104dceba438dd58a39ac4fbb685f2675c3d6e9fd3f3ee5690add8ad52d0ebf389ce3c1d5881cb0a9052e1542b4ae9d3b3

      • C:\Users\Admin\AppData\Local\Temp\is-8P29O.tmp\_isetup\_iscrypt.dll

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

      • C:\Users\Admin\AppData\Local\Temp\is-8P29O.tmp\_isetup\_isdecmp.dll

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

      • C:\Users\Admin\AppData\Local\Temp\is-C4A2I.tmp\tuc5.tmp

        Filesize

        687KB

        MD5

        f448d7f4b76e5c9c3a4eaff16a8b9b73

        SHA1

        31808f1ffa84c954376975b7cdb0007e6b762488

        SHA256

        7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

        SHA512

        f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

      • memory/3628-10-0x0000000000690000-0x0000000000691000-memory.dmp

        Filesize

        4KB

      • memory/3628-163-0x0000000000690000-0x0000000000691000-memory.dmp

        Filesize

        4KB

      • memory/3628-161-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB

      • memory/3880-180-0x0000000000910000-0x00000000009AE000-memory.dmp

        Filesize

        632KB

      • memory/3880-176-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-208-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-157-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-159-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-205-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-202-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-162-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-199-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-166-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-167-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-170-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-173-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-196-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-179-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-193-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-183-0x0000000000910000-0x00000000009AE000-memory.dmp

        Filesize

        632KB

      • memory/3880-186-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-189-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/3880-190-0x0000000000910000-0x00000000009AE000-memory.dmp

        Filesize

        632KB

      • memory/4556-1-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/4556-160-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/5056-152-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/5056-151-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/5056-154-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB

      • memory/5056-155-0x0000000000400000-0x0000000000666000-memory.dmp

        Filesize

        2.4MB