Analysis

  • max time kernel
    143s
  • max time network
    131s
  • platform
    windows10-1703_x64
  • resource
    win10-20231025-en
  • resource tags

    arch:x64arch:x86image:win10-20231025-enlocale:en-usos:windows10-1703-x64system
  • submitted
    11/12/2023, 15:11

General

  • Target

    51cf830e585f63c53fb8b2799e5b48caf3a34ee00ec3cc8d842fcb23ebd5d45f.exe

  • Size

    6.9MB

  • MD5

    142a1a347c4a8026ea6c16cdc75954fa

  • SHA1

    2d59be22e3cba3b0ec3122de19bb1d3988e0f28f

  • SHA256

    51cf830e585f63c53fb8b2799e5b48caf3a34ee00ec3cc8d842fcb23ebd5d45f

  • SHA512

    2010f9770d0378347f5c49b9ec48ab8fb195b3319c4f33ed74f185f2a638c78d826153f7d2b620c22adec3480af2b6708ef021eaff6fe7c28a5ceb838b4aee8a

  • SSDEEP

    196608:lbw61woT7mRIc+DaTblZEZTXuNkrAk8TQNY0pzj:lbw61woTCR9+OTbl0Zo/Gzj

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 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 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\51cf830e585f63c53fb8b2799e5b48caf3a34ee00ec3cc8d842fcb23ebd5d45f.exe
    "C:\Users\Admin\AppData\Local\Temp\51cf830e585f63c53fb8b2799e5b48caf3a34ee00ec3cc8d842fcb23ebd5d45f.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1264
    • C:\Users\Admin\AppData\Local\Temp\is-563S3.tmp\51cf830e585f63c53fb8b2799e5b48caf3a34ee00ec3cc8d842fcb23ebd5d45f.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-563S3.tmp\51cf830e585f63c53fb8b2799e5b48caf3a34ee00ec3cc8d842fcb23ebd5d45f.tmp" /SL5="$F01EA,6958728,68096,C:\Users\Admin\AppData\Local\Temp\51cf830e585f63c53fb8b2799e5b48caf3a34ee00ec3cc8d842fcb23ebd5d45f.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1184
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:1332
        • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
          "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -i
          3⤵
          • Executes dropped EXE
          PID:3632
        • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
          "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -s
          3⤵
          • Executes dropped EXE
          PID:2676
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 11
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4888
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 11
            4⤵
              PID:208

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              1.8MB

              MD5

              3a37f2b617ec8d6d2806d3fd94292c8d

              SHA1

              1a828850d72c3486a4aa30d9556941ec90f42536

              SHA256

              e26ce90a7a3266084baf1a9d617bbddfe6acec4d086d9be047daa0afb8d2726d

              SHA512

              2edd47804a5e393352aea25c91862823a99f756c7b1b2b5233e320279946ede8c2f74e05c08ca994cbc346115a1a5e980e2c968a9a52877fe0c281bf286530ca

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

              Filesize

              1.5MB

              MD5

              9f58d34bff9d7c898ea1ba903b05ae5b

              SHA1

              80794747a8e208026fac785013a0933a0e314029

              SHA256

              be0aa02d0634a7405528066877f5efd01312c3520d09625bd7d85636552fdab7

              SHA512

              2915d63590f2a709f63abb3bb2e49b84a639c23869c7e903d56abd6a1ee15ca68f9b98b59e3b841679a6b7810209be620cced1f1f44fe8844abad1d2cb0f3665

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

              Filesize

              550KB

              MD5

              de27fb1910597881a77edbcc9244ad15

              SHA1

              ab44c6c6fc554d8a59b388861ee3d9baa8915bb0

              SHA256

              f5b9582956f480dcf9ba58e9ee4b82c31d627c54cf4d9bbf48fc43d0af637eac

              SHA512

              8e04e07f1a091973eab6ef6dd7203ea37886ae9dc6b99df011d2ae38108eed8506d5e0e264344a62408fbf19bf34bcbc73d6a8d9e1adf32b6b3415f349f15a75

            • C:\Users\Admin\AppData\Local\Temp\is-563S3.tmp\51cf830e585f63c53fb8b2799e5b48caf3a34ee00ec3cc8d842fcb23ebd5d45f.tmp

              Filesize

              687KB

              MD5

              f448d7f4b76e5c9c3a4eaff16a8b9b73

              SHA1

              31808f1ffa84c954376975b7cdb0007e6b762488

              SHA256

              7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

              SHA512

              f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

            • \Users\Admin\AppData\Local\Temp\is-H1473.tmp\_isetup\_iscrypt.dll

              Filesize

              2KB

              MD5

              a69559718ab506675e907fe49deb71e9

              SHA1

              bc8f404ffdb1960b50c12ff9413c893b56f2e36f

              SHA256

              2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

              SHA512

              e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

            • \Users\Admin\AppData\Local\Temp\is-H1473.tmp\_isetup\_isdecmp.dll

              Filesize

              19KB

              MD5

              3adaa386b671c2df3bae5b39dc093008

              SHA1

              067cf95fbdb922d81db58432c46930f86d23dded

              SHA256

              71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

              SHA512

              bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

            • memory/1184-7-0x0000000000590000-0x0000000000591000-memory.dmp

              Filesize

              4KB

            • memory/1184-162-0x0000000000590000-0x0000000000591000-memory.dmp

              Filesize

              4KB

            • memory/1184-160-0x0000000000400000-0x00000000004BC000-memory.dmp

              Filesize

              752KB

            • memory/1264-159-0x0000000000400000-0x0000000000418000-memory.dmp

              Filesize

              96KB

            • memory/1264-2-0x0000000000400000-0x0000000000418000-memory.dmp

              Filesize

              96KB

            • memory/1264-0-0x0000000000400000-0x0000000000418000-memory.dmp

              Filesize

              96KB

            • memory/2676-188-0x0000000000900000-0x000000000099E000-memory.dmp

              Filesize

              632KB

            • memory/2676-178-0x0000000000900000-0x000000000099E000-memory.dmp

              Filesize

              632KB

            • memory/2676-157-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-209-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-161-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-206-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-165-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-166-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-169-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-172-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-175-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-158-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-179-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-184-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-187-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-202-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-191-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-194-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-197-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/2676-200-0x0000000000900000-0x000000000099E000-memory.dmp

              Filesize

              632KB

            • memory/2676-201-0x0000000000900000-0x000000000099E000-memory.dmp

              Filesize

              632KB

            • memory/3632-151-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3632-152-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3632-154-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB