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Analysis

  • max time kernel
    146s
  • max time network
    150s
  • 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, 14:12

General

  • Target

    tuc7.exe

  • Size

    6.9MB

  • MD5

    cfa8e151ffde662bf810677309b55ae9

  • SHA1

    79eee243b42540b79e6d1550b3443b168c3bd951

  • SHA256

    c2e16de97139bc0967e0f258df08311e25697ddd1a4aa4c8e50e1e95a8d04299

  • SHA512

    832eefa37ee34ba0edbfec275e942939d908a238349a2d61d3f5165ebc6af7eb0810cbaccfe33e4a30b351f7c44c7de705a88a55b01e2a2c689c0d68ad1dc93c

  • SSDEEP

    196608:weusL5Sg97UrK5EvfjuiKsrGugWn7juD9k3Ozj:DVsg95KnxLrGufn765k+zj

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:4044
    • C:\Users\Admin\AppData\Local\Temp\is-AETIA.tmp\tuc7.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-AETIA.tmp\tuc7.tmp" /SL5="$60060,6944675,68096,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:5092
      • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
        "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1288
      • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
        "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1460
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 11
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1920
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:3068
    • C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 11
      1⤵
        PID:3764

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        99KB

        MD5

        008751a4de8d807e4bacf47af14720e4

        SHA1

        0d1f01238689d688dbb136dba5da608deae7cbe5

        SHA256

        057bc00fc627537d52cbcccc12b5d4273f31ba132b52a7e3f5f4b9c08787a750

        SHA512

        27c7af994e3c4b312467c45bc731d1bf168990b1ff75fb859b6e5cd623b7e796a4cab3f66048f84cba742a12a697ce488f50a68662e18683e4d8c1e4692efc78

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

        Filesize

        150KB

        MD5

        b0370ca612c46eed6d91eaff0355ee74

        SHA1

        83fde309142a21a0eb222c1ee529b0cc8c29da0d

        SHA256

        8a8427fcb47a175ea4ba8acb120529505d3f464c818b66c989fd025e12e3b659

        SHA512

        793be260d2253ff894bf7611e7a120ab542398481eccdc458d20fc702847e701009ea129bddcc85c26762e2288501f154a85b54829443b4f50c9241034dfef7f

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

        Filesize

        42KB

        MD5

        badd53440d1be05f1331e058f5f115e8

        SHA1

        59c5ed1448ce3b91bf93ee50dbbb1943ae8145c9

        SHA256

        e293b6bf1b0d9c09a7b9dbf2d5f8275e288e9707285a88014fc432aa4e9c25a6

        SHA512

        283d7313bfb72b9fec7e7cd15a2b3ad71e9583b148dfcf41004fd1d40e99346e695390f1352482d6a42b0ead6edf0bf3b718ee2a13d75e20824e606bc26ab2c9

      • C:\Users\Admin\AppData\Local\Temp\is-73LPG.tmp\_isetup\_iscrypt.dll

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

      • C:\Users\Admin\AppData\Local\Temp\is-73LPG.tmp\_isetup\_isdecmp.dll

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

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

        Filesize

        447KB

        MD5

        5098285ba89ff4d6e3dbf94a9930c644

        SHA1

        04e57552b09744b5405fdfbe7b92f5e9f8876a8d

        SHA256

        7b66c766dad2797e4a31cdf333a0cf09a8b376a44806c3628ca540bc6dfae10f

        SHA512

        7c9907664a303b38a761dcb407259607eac9d700db3cb36c964611a81fab86df4334b4f7af6aaba95c51ffa3dbc683d6c9a24d9930272ca7418b90e90f161c3a

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

        Filesize

        487KB

        MD5

        82c2f40a9b8d222867024ef2b9a28507

        SHA1

        34ca79dff2556e6b30e5ffd12f5f34f00844a367

        SHA256

        15652a0c97b6fd37e9e879c42d1ba8eb0f21f90abc214162b061137a6e18c8a4

        SHA512

        8448adb195cddd7737847cd693bc40c6fec92b7c228c312fa91927a1e95b7eddedab18be34b62e015f5d9f4c4a066c178c2fb4ff3584ff3ef03e94c66d216394

      • memory/1288-151-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1288-154-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1288-152-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1288-155-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-162-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-190-0x00000000008B0000-0x000000000094E000-memory.dmp

        Filesize

        632KB

      • memory/1460-157-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-208-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-205-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-202-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-199-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-196-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-193-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-166-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-167-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-170-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-173-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-176-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-178-0x00000000008B0000-0x000000000094E000-memory.dmp

        Filesize

        632KB

      • memory/1460-182-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-183-0x00000000008B0000-0x000000000094E000-memory.dmp

        Filesize

        632KB

      • memory/1460-186-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-189-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1460-159-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4044-0-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/4044-160-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/4044-2-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/5092-163-0x0000000000580000-0x0000000000581000-memory.dmp

        Filesize

        4KB

      • memory/5092-161-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB

      • memory/5092-13-0x0000000000580000-0x0000000000581000-memory.dmp

        Filesize

        4KB