Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20231130-en
  • resource tags

    arch:x64arch:x86image:win7-20231130-enlocale:en-usos:windows7-x64system
  • submitted
    12/12/2023, 16:57

General

  • Target

    tuc7.exe

  • Size

    7.0MB

  • MD5

    c308301f0845e5aec072754638ee03ab

  • SHA1

    74d6325dd02c5a1248096f6be0fba8c81b4abaff

  • SHA256

    9b932365aaaa9b981fa5946f5fca035d5d346ad979476e388cf8d4dd0f59c37e

  • SHA512

    a1d688ceaf2cba10c8107a3a4df5f979cf8509b2c48e9d17cd28f3a0a1fd0dc16c9af91edb19b7cbb66eebcca400c8e7d2cf18a46d4c121aafdded5f8bc03624

  • SSDEEP

    196608:Vxm5Z7xPjWtYOkdHWd1V3GaO4TwWHvzASW8P7Bzj:a7RjWtfj95dLASWyzj

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 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 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:3032
    • C:\Users\Admin\AppData\Local\Temp\is-Q9H15.tmp\tuc7.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-Q9H15.tmp\tuc7.tmp" /SL5="$40026,7089240,121856,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:2228
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:1308
        • C:\Program Files (x86)\numGIF\numgif.exe
          "C:\Program Files (x86)\numGIF\numgif.exe" -i
          3⤵
          • Executes dropped EXE
          PID:1640
        • C:\Program Files (x86)\numGIF\numgif.exe
          "C:\Program Files (x86)\numGIF\numgif.exe" -s
          3⤵
          • Executes dropped EXE
          PID:2720
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 12
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2704
    • C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 12
      1⤵
        PID:1084

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Program Files (x86)\numGIF\numgif.exe

              Filesize

              1.5MB

              MD5

              8e53982e2620bd2464da47ed9f764559

              SHA1

              b1ebe73cc28c357d8cc910b7ce562c36a5dbd1df

              SHA256

              4540ba2ef1a109245bf345c00e8a1ffd9514a21944259afeed65a37ed086aa27

              SHA512

              a90bc06b0a19e7b25c1443455e3c89812f01f6177ce9c6b83d4ca707dc3f90468340d5c1d77e7813e2859bfa5053ee9ad7b2ea0e9d375264bb2bd4a757d76e91

            • C:\Program Files (x86)\numGIF\numgif.exe

              Filesize

              254KB

              MD5

              4a5e8a04191cabeb7d611255a3d3ca72

              SHA1

              af076b3a7de1abc45e0aec077aace1ea2e61d62e

              SHA256

              bca4e3528d4fc9c67a4143fde3ba05a52a3bd0f506b889ac19ad87765caa708f

              SHA512

              33ab9cac40548e38ba05ff39a58907c959b0932acba81767808497af2a0b067df4ce38282f12d5291633b0fb88ab439a20dd71ae33dc1ddbb84293d7e25369e4

            • C:\Program Files (x86)\numGIF\numgif.exe

              Filesize

              164KB

              MD5

              f803f467aa4ed808b23ced3275001d50

              SHA1

              4aa388830e33ba6558aaf6fd7e3e9a2bf62dae15

              SHA256

              43bb30c93e476c5ba2bbe2674538a708cb0fd1a37c0a20e1263963dd7c8e4fbf

              SHA512

              2bd836a3937a73b497d95a1818a515be8b649a87d9228a9961a19749bf8c6a9ba6b74aad62f0d2266ed306461ee865f41dd925d71106add90c87e6e377947198

            • \Program Files (x86)\numGIF\numgif.exe

              Filesize

              2.0MB

              MD5

              e4a8032541379455f84bccfe4920d9da

              SHA1

              ab9ed80023a2c08705234d5057a4cab860d87a2b

              SHA256

              45b27c8d70b72412f6d1f3b5e08262318d1e87490bb31c4f29975e0f87e192af

              SHA512

              72468e314b80bb9b4ab658676e7f8a19062cf2c3af0fb29b06c56924d2718319669d7f8cc37959072d376aa0e4119fea6674697021816b6ce5ce1c1f7c05e03f

            • \Users\Admin\AppData\Local\Temp\is-NLT0H.tmp\_isetup\_iscrypt.dll

              Filesize

              2KB

              MD5

              a69559718ab506675e907fe49deb71e9

              SHA1

              bc8f404ffdb1960b50c12ff9413c893b56f2e36f

              SHA256

              2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

              SHA512

              e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

            • \Users\Admin\AppData\Local\Temp\is-NLT0H.tmp\_isetup\_isdecmp.dll

              Filesize

              19KB

              MD5

              3adaa386b671c2df3bae5b39dc093008

              SHA1

              067cf95fbdb922d81db58432c46930f86d23dded

              SHA256

              71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

              SHA512

              bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

            • \Users\Admin\AppData\Local\Temp\is-NLT0H.tmp\_isetup\_shfoldr.dll

              Filesize

              22KB

              MD5

              92dc6ef532fbb4a5c3201469a5b5eb63

              SHA1

              3e89ff837147c16b4e41c30d6c796374e0b8e62c

              SHA256

              9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

              SHA512

              9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

            • \Users\Admin\AppData\Local\Temp\is-Q9H15.tmp\tuc7.tmp

              Filesize

              687KB

              MD5

              f448d7f4b76e5c9c3a4eaff16a8b9b73

              SHA1

              31808f1ffa84c954376975b7cdb0007e6b762488

              SHA256

              7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

              SHA512

              f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

            • memory/1640-158-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/1640-153-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/1640-154-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/1640-157-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2228-164-0x0000000000400000-0x00000000004BC000-memory.dmp

              Filesize

              752KB

            • memory/2228-166-0x00000000002C0000-0x00000000002C1000-memory.dmp

              Filesize

              4KB

            • memory/2228-8-0x00000000002C0000-0x00000000002C1000-memory.dmp

              Filesize

              4KB

            • memory/2228-151-0x00000000037B0000-0x00000000039A7000-memory.dmp

              Filesize

              2.0MB

            • memory/2228-167-0x00000000037B0000-0x00000000039A7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-177-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-184-0x00000000025E0000-0x000000000267E000-memory.dmp

              Filesize

              632KB

            • memory/2720-165-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-211-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-162-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-170-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-171-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-174-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-160-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-180-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-183-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-208-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-189-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-192-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-193-0x00000000025E0000-0x000000000267E000-memory.dmp

              Filesize

              632KB

            • memory/2720-196-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-199-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-202-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/2720-205-0x0000000000400000-0x00000000005F7000-memory.dmp

              Filesize

              2.0MB

            • memory/3032-1-0x0000000000400000-0x0000000000425000-memory.dmp

              Filesize

              148KB

            • memory/3032-163-0x0000000000400000-0x0000000000425000-memory.dmp

              Filesize

              148KB