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Analysis

  • max time kernel
    147s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    10/12/2023, 18:16

General

  • Target

    tuc7.exe

  • Size

    6.9MB

  • MD5

    8cdc35abbc8f012285fa8ada42cd1854

  • SHA1

    27184eee999841e6c589d90fd4f2db92abb21255

  • SHA256

    fcd543fca24df3c849ddd7c28c225335d97c2c8d678409eb5865a7e04548e19d

  • SHA512

    5ec7a6672a3f633d9561d21b48e2af99a8cab035f7f42aa0afb3054967ed38fac7e9677a539e73f66eef2dcbea3a86922ae40768a120cbe59dd79a53d00f12e7

  • SSDEEP

    196608:aA89BmaeXRdyXFnlUrU7o7Bz3HzNNn1jnNnTfMImG0zj:CBmakyVnlUQ7Wz3Tv1jNTh0zj

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 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 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tuc7.exe
    "C:\Users\Admin\AppData\Local\Temp\tuc7.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Users\Admin\AppData\Local\Temp\is-MKRBP.tmp\tuc7.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-MKRBP.tmp\tuc7.tmp" /SL5="$400F4,6977575,54272,C:\Users\Admin\AppData\Local\Temp\tuc7.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1808
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:1628
        • C:\Program Files (x86)\CRTGame\crtgame.exe
          "C:\Program Files (x86)\CRTGame\crtgame.exe" -i
          3⤵
          • Executes dropped EXE
          PID:2240
        • C:\Program Files (x86)\CRTGame\crtgame.exe
          "C:\Program Files (x86)\CRTGame\crtgame.exe" -s
          3⤵
          • Executes dropped EXE
          PID:524
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 10
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2820
    • C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 10
      1⤵
        PID:1432

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Program Files (x86)\CRTGame\crtgame.exe

        Filesize

        396KB

        MD5

        ec0e489764544ee6460d3eb693861263

        SHA1

        0ecf1799abab67ab4bfaff08dcb826517a5b186c

        SHA256

        32796ddcb9bc6b938c8fba6bce06579084078364dfc1279875dda2fe4b820513

        SHA512

        40517e8fc43a18329725b4ec5532bda5f2f49bdc0860e0c0b753df0bf9f8e608aa54b1045dcfb83542a6582e4b0ee70b64b9e390be71511f8a8094751fe5d54b

      • C:\Program Files (x86)\CRTGame\crtgame.exe

        Filesize

        298KB

        MD5

        4006ff6a228abf92de38f2d2c7d6ce13

        SHA1

        d4392014efa0a22ab07fe5b9008a03637f4eddf8

        SHA256

        f943be674b63c65fd04161b8e86f0017f941b7d8e24a6dceba9aca1adb999c35

        SHA512

        4abe1fc245411972237340153064f1c081adc79d884d5920cf2642730474a308a21966d7a13498897dd3f44196fe397203bbfa2fe949b073fb0eb1044d9dfc11

      • C:\Program Files (x86)\CRTGame\crtgame.exe

        Filesize

        207KB

        MD5

        92047b5d001a889d16c49d56ce29b305

        SHA1

        f0d98e0b29efc8f6998daaf3b5d7d305db90a483

        SHA256

        72e9517abba3406e78762935d84f4bd6353b909a7ff34b8adef1bce5aec80a2b

        SHA512

        4b0c1eae2582153876a7214088678826dd81034e6eee504c7e4a464e91d879a6a3185759f3a8359e2dbd3ab27df92a5b4e5e7e7e96bee8f7b8615e04d9ddb6f0

      • C:\Users\Admin\AppData\Local\Temp\is-MKRBP.tmp\tuc7.tmp

        Filesize

        451KB

        MD5

        877c161a40ba655aee875c9a7bfe6afc

        SHA1

        98797a837f199ef84b6cbd1724c667e9d70f7348

        SHA256

        efcca0fa4531e6cd33e2f96ef8279e6f44c510ea165d25d7048a58c5cc9e7d97

        SHA512

        860e96a27b5a497cefb12c46e0c17a8438c10a4d08df138d43376035d09f11b4ce6232043b8f59d29d056f8b0227821cf87e231f9f81d922be13e2e503ce1ece

      • C:\Users\Admin\AppData\Local\Temp\is-MKRBP.tmp\tuc7.tmp

        Filesize

        563KB

        MD5

        50949864d19b420ee6666965900ef237

        SHA1

        69173166f919c07dad5154bba4968e51fbac8341

        SHA256

        30970709e7cd96cffcca7e3e2f2d8b6e04517903f40ca5f0766ff64334f50678

        SHA512

        141f67209c326b6e4727a6fb26507feb8913e7020fb931706c45db1e858310a739ee756c14c3f59cc5ad0b9e9c52234cc2bcd97dd8e5d0f85bd4ece76c88f68c

      • \Program Files (x86)\CRTGame\crtgame.exe

        Filesize

        491KB

        MD5

        0d3fb0df060d6ccc7fb4c1b3ebf8026b

        SHA1

        d53b6519e3dc6fc9ededf41c8e1cddadbc432d04

        SHA256

        83f8d7946543468adb3f7e9c035e843313d16b1bd4d3287cf7124c232bef693a

        SHA512

        567c1c987bfd0b361211362383493eab46c5f64a4d884b296efaf8f346ac73a4f49b0cc5262da4ca55698b89ef4048b32c6419db2272b094a1c71f953d131546

      • \Users\Admin\AppData\Local\Temp\is-MKRBP.tmp\tuc7.tmp

        Filesize

        472KB

        MD5

        af5e07b50a1b3732bc7375ee806cc1ec

        SHA1

        fd4e9f3f18e4ff9e59eb7ed66bfb53287febe27c

        SHA256

        661fef2e47b5b15bdd6d7e788ac2e3293f53c96ceaf20d645ba5b7509b2c3fd2

        SHA512

        30adecb8e649c536d101a620af336a8919fdeb3c2073866f9f174fa8d353e8b01cd03a896bd72bb5e096607cb3e3c8f2a389146419660c9f8e76758dd7269316

      • \Users\Admin\AppData\Local\Temp\is-Q694M.tmp\_isetup\_iscrypt.dll

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

      • \Users\Admin\AppData\Local\Temp\is-Q694M.tmp\_isetup\_isdecmp.dll

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

      • \Users\Admin\AppData\Local\Temp\is-Q694M.tmp\_isetup\_shfoldr.dll

        Filesize

        22KB

        MD5

        92dc6ef532fbb4a5c3201469a5b5eb63

        SHA1

        3e89ff837147c16b4e41c30d6c796374e0b8e62c

        SHA256

        9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

        SHA512

        9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

      • memory/524-200-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-162-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-203-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-210-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-181-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-197-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-213-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-160-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-196-0x00000000026C0000-0x0000000002762000-memory.dmp

        Filesize

        648KB

      • memory/524-206-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-193-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-190-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-185-0x00000000026C0000-0x0000000002762000-memory.dmp

        Filesize

        648KB

      • memory/524-184-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-165-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-170-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-171-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-174-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-175-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/524-178-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/1808-152-0x00000000034C0000-0x00000000036DE000-memory.dmp

        Filesize

        2.1MB

      • memory/1808-166-0x0000000000240000-0x0000000000241000-memory.dmp

        Filesize

        4KB

      • memory/1808-167-0x00000000034C0000-0x00000000036DE000-memory.dmp

        Filesize

        2.1MB

      • memory/1808-164-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB

      • memory/1808-8-0x0000000000240000-0x0000000000241000-memory.dmp

        Filesize

        4KB

      • memory/2220-163-0x0000000000400000-0x0000000000414000-memory.dmp

        Filesize

        80KB

      • memory/2220-0-0x0000000000400000-0x0000000000414000-memory.dmp

        Filesize

        80KB

      • memory/2220-2-0x0000000000400000-0x0000000000414000-memory.dmp

        Filesize

        80KB

      • memory/2240-154-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2240-158-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2240-157-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB

      • memory/2240-153-0x0000000000400000-0x000000000061E000-memory.dmp

        Filesize

        2.1MB