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Analysis

  • max time kernel
    146s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/12/2023, 10:00

General

  • Target

    e73891ce3a15c094d64b8a0bf2d846b2193af9619c489c0ea1cd7a9e37885f45.exe

  • Size

    6.9MB

  • MD5

    5aff62c035c273e6c3696a8b81ed46e2

  • SHA1

    43a29119592ab5e150623064bda25252b5eac8a5

  • SHA256

    e73891ce3a15c094d64b8a0bf2d846b2193af9619c489c0ea1cd7a9e37885f45

  • SHA512

    320920e8a3bbff94d61aa1e742f544c429bf7eb252c2e5d8197c35676221f2233799b743965a7934a8f723a3d4b970fa5afc00d672e898ed85e762779e973691

  • SSDEEP

    98304:7CtQAsI29jHcxWjRTp6azZzB8hi4ZoEiAmP+xhctqd60dVADjhSF1O8lw3kBL7l7:QstjRJ/4ZoSQQhtd6sWDlSrM0BLRrzj

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\e73891ce3a15c094d64b8a0bf2d846b2193af9619c489c0ea1cd7a9e37885f45.exe
    "C:\Users\Admin\AppData\Local\Temp\e73891ce3a15c094d64b8a0bf2d846b2193af9619c489c0ea1cd7a9e37885f45.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4136
    • C:\Users\Admin\AppData\Local\Temp\is-FBRRK.tmp\e73891ce3a15c094d64b8a0bf2d846b2193af9619c489c0ea1cd7a9e37885f45.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-FBRRK.tmp\e73891ce3a15c094d64b8a0bf2d846b2193af9619c489c0ea1cd7a9e37885f45.tmp" /SL5="$50160,6990075,68096,C:\Users\Admin\AppData\Local\Temp\e73891ce3a15c094d64b8a0bf2d846b2193af9619c489c0ea1cd7a9e37885f45.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2564
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:3776
        • C:\Program Files (x86)\WMAFormat\wmaformat.exe
          "C:\Program Files (x86)\WMAFormat\wmaformat.exe" -i
          3⤵
          • Executes dropped EXE
          PID:4348
        • C:\Program Files (x86)\WMAFormat\wmaformat.exe
          "C:\Program Files (x86)\WMAFormat\wmaformat.exe" -s
          3⤵
          • Executes dropped EXE
          PID:1868
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 11
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2408
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 11
            4⤵
              PID:3292

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Program Files (x86)\WMAFormat\wmaformat.exe

        Filesize

        1.4MB

        MD5

        5cad7fea412ba1f07610881fa0d782ec

        SHA1

        1a9b67aad35437851fd8137510a86854d0a68366

        SHA256

        192e0f856d8500d346a0a917719b8eaed5d673967554848d1a52066b6f1a97e2

        SHA512

        bfe5bbd8b0aae9e51db7f8edc6e90de6244e15cd3bec38344ab55d1b9ec77a8a47c98d8afc52b509e658fd205df8b2ff6a61620e579ff2f320cebda5faf45728

      • C:\Program Files (x86)\WMAFormat\wmaformat.exe

        Filesize

        1.3MB

        MD5

        e70cd927a4731c57d70819e77b416553

        SHA1

        c2580932a4047de1a27e37d73d2d3f11f99f88b1

        SHA256

        5e154231c232c277046083f3ca60bae79b11e76d9b60f585d324e30930dc4be0

        SHA512

        8fe23d2d81e3e0f52a5da860312ca23f78c9b9840798b2e46ec26afcc4374fbcfe2922992ffae9df291c4ab448dbd25d84884c1bbddaba810a1088edc5352055

      • C:\Program Files (x86)\WMAFormat\wmaformat.exe

        Filesize

        585KB

        MD5

        1b03dce0ee069466487b487c418fe4cd

        SHA1

        5b0eae33f9a20dbb580438d7cac88e64a06ae0c8

        SHA256

        23391444daf60254d55a60de9f175ee94ad9514f77b192b53f39869d01f3f2d1

        SHA512

        bf7752aa52e05523852110cfb49324fe9f4f25046edf534c4ac5df878b44b01c5139f28afeaa4d070d35110a846e4e893b96394a168bed152a96e58d1457f202

      • C:\Users\Admin\AppData\Local\Temp\is-0FL82.tmp\_isetup\_iscrypt.dll

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

      • C:\Users\Admin\AppData\Local\Temp\is-0FL82.tmp\_isetup\_isdecmp.dll

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

      • C:\Users\Admin\AppData\Local\Temp\is-FBRRK.tmp\e73891ce3a15c094d64b8a0bf2d846b2193af9619c489c0ea1cd7a9e37885f45.tmp

        Filesize

        687KB

        MD5

        f448d7f4b76e5c9c3a4eaff16a8b9b73

        SHA1

        31808f1ffa84c954376975b7cdb0007e6b762488

        SHA256

        7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

        SHA512

        f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

      • memory/1868-158-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-161-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-201-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-198-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-195-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-208-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-185-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-192-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-189-0x00000000007E0000-0x000000000087E000-memory.dmp

        Filesize

        632KB

      • memory/1868-205-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-188-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-165-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-166-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-169-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-172-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-175-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-178-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/1868-180-0x00000000007E0000-0x000000000087E000-memory.dmp

        Filesize

        632KB

      • memory/2564-162-0x0000000000760000-0x0000000000761000-memory.dmp

        Filesize

        4KB

      • memory/2564-160-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB

      • memory/2564-7-0x0000000000760000-0x0000000000761000-memory.dmp

        Filesize

        4KB

      • memory/4136-0-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/4136-159-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/4136-2-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/4348-152-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4348-155-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4348-151-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB