Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-1703_x64
  • resource
    win10-20231129-en
  • resource tags

    arch:x64arch:x86image:win10-20231129-enlocale:en-usos:windows10-1703-x64system
  • submitted
    11/12/2023, 14:35

General

  • Target

    19b059164d91956b5e0f34fe5b9261f6ea958f70b1e3698a5f8a2e395235bdf8.exe

  • Size

    6.9MB

  • MD5

    b8ef4e882069b96a8b07416c545b3ea2

  • SHA1

    b9d9e0c6bbe44fa2b95d7409c6cbd1c033ab4fbf

  • SHA256

    19b059164d91956b5e0f34fe5b9261f6ea958f70b1e3698a5f8a2e395235bdf8

  • SHA512

    8aff89352705012d15ebdcb4e019dfd54aeefec0e2a7eaa2e4e349d4d4f46697dc24ee3d40079f42ccea30bd149dbefea8ffb11d472d9c7d955e5b3ebdf5f2a6

  • SSDEEP

    196608:aeusL5Sg97UrK5EvfjuiKsrGugWn7juD9k3Ozj:hVsg95KnxLrGufn765k+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\19b059164d91956b5e0f34fe5b9261f6ea958f70b1e3698a5f8a2e395235bdf8.exe
    "C:\Users\Admin\AppData\Local\Temp\19b059164d91956b5e0f34fe5b9261f6ea958f70b1e3698a5f8a2e395235bdf8.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3428
    • C:\Users\Admin\AppData\Local\Temp\is-7L4MI.tmp\19b059164d91956b5e0f34fe5b9261f6ea958f70b1e3698a5f8a2e395235bdf8.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-7L4MI.tmp\19b059164d91956b5e0f34fe5b9261f6ea958f70b1e3698a5f8a2e395235bdf8.tmp" /SL5="$1701CC,6944675,68096,C:\Users\Admin\AppData\Local\Temp\19b059164d91956b5e0f34fe5b9261f6ea958f70b1e3698a5f8a2e395235bdf8.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3452
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:2864
        • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
          "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -i
          3⤵
          • Executes dropped EXE
          PID:4132
        • C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
          "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -s
          3⤵
          • Executes dropped EXE
          PID:3168
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 11
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2868
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 11
            4⤵
              PID:4492

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              1.5MB

              MD5

              f2788f080801a666705182bffe179a45

              SHA1

              92da9151824a2998429b9a475733397f59ed6d0c

              SHA256

              6e1155d662063cab26f561ea81cc9fda5d15c1fa57d53493eaf589eb7bc13b71

              SHA512

              952b134bd0e202e04308c36c9e449b3a68df7eeb438ead73832cb3b79e005f86cc8479b4ac883f2b0880a5a932258317195b0bf0bc9e2c9e5a375c3268d720e5

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

              Filesize

              1.3MB

              MD5

              e14d9ad54bffc39d0514dd971e7820c5

              SHA1

              5c85020eb6cb2f5a1ba4ac99b85fd21f621ffbbf

              SHA256

              fcd30e67c105077f5187a5d77bcfe1a601dcc8cc9e61577cd7afdef7167966f7

              SHA512

              a207daa52404543fb5db27e7dc066595f7bb0c73bdf2d2128dc1a78ccd3580c702dd29f01ac27c91a7bf6d7f9a56943761903320a0a439e6cf92b24483ce4e21

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

              Filesize

              377KB

              MD5

              5a348189dade89d9718a8b36b37d2e6f

              SHA1

              490a8206124941246aee1b409e088835ab503853

              SHA256

              b1b24dbf4f7f411259a58c68c13db69e8c018989936b75cb0cee2ae7de8490c2

              SHA512

              69ba328ae427953fbf45dedf0840ce2286bea54f00ea887003227f684cec1365adf3f8d97c58db56f3a8e79ed6be6b328ac0fedd8b30089ebf82feeefa2bf410

            • C:\Users\Admin\AppData\Local\Temp\is-7L4MI.tmp\19b059164d91956b5e0f34fe5b9261f6ea958f70b1e3698a5f8a2e395235bdf8.tmp

              Filesize

              687KB

              MD5

              f448d7f4b76e5c9c3a4eaff16a8b9b73

              SHA1

              31808f1ffa84c954376975b7cdb0007e6b762488

              SHA256

              7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

              SHA512

              f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

            • \Users\Admin\AppData\Local\Temp\is-61KU5.tmp\_isetup\_iscrypt.dll

              Filesize

              2KB

              MD5

              a69559718ab506675e907fe49deb71e9

              SHA1

              bc8f404ffdb1960b50c12ff9413c893b56f2e36f

              SHA256

              2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

              SHA512

              e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

            • \Users\Admin\AppData\Local\Temp\is-61KU5.tmp\_isetup\_isdecmp.dll

              Filesize

              19KB

              MD5

              3adaa386b671c2df3bae5b39dc093008

              SHA1

              067cf95fbdb922d81db58432c46930f86d23dded

              SHA256

              71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

              SHA512

              bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

            • memory/3168-180-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-190-0x00000000008D0000-0x000000000096E000-memory.dmp

              Filesize

              632KB

            • memory/3168-208-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-205-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-202-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-157-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-199-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-159-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-196-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-193-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-162-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-189-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-166-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-167-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-170-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-173-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-176-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-179-0x00000000008D0000-0x000000000096E000-memory.dmp

              Filesize

              632KB

            • memory/3168-186-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/3168-183-0x00000000008D0000-0x000000000096E000-memory.dmp

              Filesize

              632KB

            • memory/3428-0-0x0000000000400000-0x0000000000418000-memory.dmp

              Filesize

              96KB

            • memory/3428-160-0x0000000000400000-0x0000000000418000-memory.dmp

              Filesize

              96KB

            • memory/3428-2-0x0000000000400000-0x0000000000418000-memory.dmp

              Filesize

              96KB

            • memory/3452-163-0x0000000000540000-0x0000000000541000-memory.dmp

              Filesize

              4KB

            • memory/3452-7-0x0000000000540000-0x0000000000541000-memory.dmp

              Filesize

              4KB

            • memory/3452-161-0x0000000000400000-0x00000000004BC000-memory.dmp

              Filesize

              752KB

            • memory/4132-155-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/4132-152-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB

            • memory/4132-151-0x0000000000400000-0x00000000005CF000-memory.dmp

              Filesize

              1.8MB