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Analysis

  • max time kernel
    147s
  • 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
    12/12/2023, 17:05

General

  • Target

    tuc7.exe

  • Size

    7.0MB

  • MD5

    c4350a264f05a08d1ec4063a0dc66b43

  • SHA1

    ad13fbe981e409d45c7d53d7bcb4ac39227abed0

  • SHA256

    a4817740f440824145b8806cbeebe3d9f8c6926f6888c6cc71ba26ab203c7ee4

  • SHA512

    ae8fa78209f3bf39510a10262f8b5a42a0d1b9b137c942c060fee2908c985bbc832262128b3f60680bfd252a44692c22bf048f784556e1ab5bd4c7f0da7b3cb3

  • SSDEEP

    196608:mxm5Z7xPjWtYOkdHWd1V3GaO4TwWHvzASW8P7Bzj:N7RjWtfj95dLASWyzj

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\tuc7.exe
    "C:\Users\Admin\AppData\Local\Temp\tuc7.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1836
    • C:\Users\Admin\AppData\Local\Temp\is-BE6SD.tmp\tuc7.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-BE6SD.tmp\tuc7.tmp" /SL5="$50068,7089240,121856,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:760
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:3816
        • C:\Program Files (x86)\numGIF\numgif.exe
          "C:\Program Files (x86)\numGIF\numgif.exe" -i
          3⤵
          • Executes dropped EXE
          PID:1004
        • C:\Program Files (x86)\numGIF\numgif.exe
          "C:\Program Files (x86)\numGIF\numgif.exe" -s
          3⤵
          • Executes dropped EXE
          PID:2500
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 12
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:432
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 12
            4⤵
              PID:2092

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        1.4MB

        MD5

        2ae2dd23d4587ffbc1c22a8bb41ea33a

        SHA1

        4a82c60dc4454cea144b3e94aece35459b7fa597

        SHA256

        b08f0e3fca1de024f6d37c0fe4b8af9f7be35855a004d1aa949984e7f2be4b51

        SHA512

        9a5a8e5a5288afdcda7e6ff3475248515636cb390c23004b21e025187109e0a7b9cc51599bb7da2627a515748ea53143c3877b37e510b1395fa77a5fc06df625

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

        Filesize

        1.1MB

        MD5

        0b6793a4641e673e81e7bc66c29b0c3b

        SHA1

        2b3478b551b36429686b4e20c8d00a57d43f4044

        SHA256

        24cb7493245cd009d3334da44c0d736f6b0fe13082bf520663f94493a610a44d

        SHA512

        44c109bbe6d7fcdd154c6b820bd399897c70cfa4d1878feeae81ecf3c3c135d234c529e08746970eee549e2f7d423618893888e10d23a802137f206d210d9b83

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

        Filesize

        556KB

        MD5

        c69131f1301a8d77b30eef327093e8fa

        SHA1

        c9692a77122143075be6a45997af96bde40746bd

        SHA256

        1a940b1db2fe54bff944e42c1092ba50325f2b8eb6ddb3e7d330fd113321eb27

        SHA512

        85ba34f161f95dd4d37ce0124aa624e93b0328d9850e19e25a018d138849c929d9f3bb983be0a4c6b69f3fc69c178e58f69a12021c96f524022013b1ef6a35fd

      • C:\Users\Admin\AppData\Local\Temp\is-BE6SD.tmp\tuc7.tmp

        Filesize

        687KB

        MD5

        f448d7f4b76e5c9c3a4eaff16a8b9b73

        SHA1

        31808f1ffa84c954376975b7cdb0007e6b762488

        SHA256

        7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

        SHA512

        f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

      • C:\Users\Admin\AppData\Local\Temp\is-O537K.tmp\_isetup\_iscrypt.dll

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

      • C:\Users\Admin\AppData\Local\Temp\is-O537K.tmp\_isetup\_isdecmp.dll

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

      • memory/760-160-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB

      • memory/760-162-0x0000000000650000-0x0000000000651000-memory.dmp

        Filesize

        4KB

      • memory/760-9-0x0000000000650000-0x0000000000651000-memory.dmp

        Filesize

        4KB

      • memory/1004-150-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/1004-151-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/1004-152-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/1004-154-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/1836-0-0x0000000000400000-0x0000000000425000-memory.dmp

        Filesize

        148KB

      • memory/1836-159-0x0000000000400000-0x0000000000425000-memory.dmp

        Filesize

        148KB

      • memory/2500-161-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-179-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-156-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-165-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-166-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-169-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-172-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-175-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-178-0x0000000000700000-0x000000000079E000-memory.dmp

        Filesize

        632KB

      • memory/2500-158-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-182-0x0000000000700000-0x000000000079E000-memory.dmp

        Filesize

        632KB

      • memory/2500-185-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-188-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-189-0x0000000000700000-0x000000000079E000-memory.dmp

        Filesize

        632KB

      • memory/2500-192-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-195-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-198-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-201-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-204-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB

      • memory/2500-207-0x0000000000400000-0x00000000005F7000-memory.dmp

        Filesize

        2.0MB