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Analysis

  • max time kernel
    144s
  • max time network
    149s
  • 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, 09:14

General

  • Target

    a428e93a3889454b32800b80b1b83bafb0ae26cfaf01430a6c79faa8b279e3ba.exe

  • Size

    6.9MB

  • MD5

    c1a1a831f2866ae30b4be11578ab59c2

  • SHA1

    c5850bbd412c1aa30450acb86cd108ca19d9db9d

  • SHA256

    a428e93a3889454b32800b80b1b83bafb0ae26cfaf01430a6c79faa8b279e3ba

  • SHA512

    7cd1d7828519ce057e44c4bf19841353e3b3b70b31e3384caecb4dc34db4a62a5e2560151246b546f4bd4a40d882770550207563706dde19dc221fab72c8381d

  • SSDEEP

    98304:PzyQ4kc+v4jvDhsQepuwmrkz216aPE8d9X+X1M2CX27eGqc6hxTGZtsAzFjTidLb:mQ4PTP94zHQ9OX1M2CGjn6hDc6LKEzj

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\a428e93a3889454b32800b80b1b83bafb0ae26cfaf01430a6c79faa8b279e3ba.exe
    "C:\Users\Admin\AppData\Local\Temp\a428e93a3889454b32800b80b1b83bafb0ae26cfaf01430a6c79faa8b279e3ba.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4048
    • C:\Users\Admin\AppData\Local\Temp\is-713B8.tmp\a428e93a3889454b32800b80b1b83bafb0ae26cfaf01430a6c79faa8b279e3ba.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-713B8.tmp\a428e93a3889454b32800b80b1b83bafb0ae26cfaf01430a6c79faa8b279e3ba.tmp" /SL5="$901C8,6985458,68096,C:\Users\Admin\AppData\Local\Temp\a428e93a3889454b32800b80b1b83bafb0ae26cfaf01430a6c79faa8b279e3ba.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1512
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:1192
        • C:\Program Files (x86)\WMAFormat\wmaformat.exe
          "C:\Program Files (x86)\WMAFormat\wmaformat.exe" -i
          3⤵
          • Executes dropped EXE
          PID:4108
        • C:\Program Files (x86)\WMAFormat\wmaformat.exe
          "C:\Program Files (x86)\WMAFormat\wmaformat.exe" -s
          3⤵
          • Executes dropped EXE
          PID:4708
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 11
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2032
    • C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 11
      1⤵
        PID:4832

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        812KB

        MD5

        dbb3879f119fb6284c36496c1825d58d

        SHA1

        e243430c265676d43e6bdb35316a8673eeeda26a

        SHA256

        999a16321cd890bc3d1f360ba773fe98b3ec83d127173cefff70ead2fa6d9333

        SHA512

        5dcba3f634004a4dea692a963bf26900c05efc4335e026affe92635f48ec7c1b154829b7fc0f53c5fed22a5ae60ffcaa5c37dc5fef62c7a124086211daea570a

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

        Filesize

        810KB

        MD5

        828c3c70989518eba5722e9fc6ef847d

        SHA1

        521d80b01b1850dd5af5a0b57ee867ef74074be8

        SHA256

        1a8b3f0fe330a30817014e2752064960a470328ce43c1e3ca9de2d74645c4508

        SHA512

        ffaf387e2b225e209e0d3203f62d22bc0510217d320f3c463b5fd6f31304070f9099d84834e317ccbe83df591a41e96d710ad2e592f1b4ebc0f45940b7b31a3d

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

        Filesize

        718KB

        MD5

        0e2e964a151901ada356f04da129a719

        SHA1

        2abecdbcf3195ef9f465b6b5881582667ad905cb

        SHA256

        a963a1a02176591372df075ec81aeb5a3fbce0c82b251fc446ef9ef0eb0b9da6

        SHA512

        3a3806b2891582fafe92a75c59c1a5e70b84d709dedc118b4471bffbe95ec6fee2fa1125982a5c03a54f24a1024132574c33e886cb5ba937b09fdaac6f39eb48

      • C:\Users\Admin\AppData\Local\Temp\is-713B8.tmp\a428e93a3889454b32800b80b1b83bafb0ae26cfaf01430a6c79faa8b279e3ba.tmp

        Filesize

        687KB

        MD5

        f448d7f4b76e5c9c3a4eaff16a8b9b73

        SHA1

        31808f1ffa84c954376975b7cdb0007e6b762488

        SHA256

        7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

        SHA512

        f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

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

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

      • memory/1512-162-0x00000000001F0000-0x00000000001F1000-memory.dmp

        Filesize

        4KB

      • memory/1512-12-0x00000000001F0000-0x00000000001F1000-memory.dmp

        Filesize

        4KB

      • memory/1512-160-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB

      • memory/4048-2-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/4048-0-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/4048-159-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/4108-151-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4108-152-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4108-154-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4108-155-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-161-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-182-0x0000000000810000-0x00000000008AE000-memory.dmp

        Filesize

        632KB

      • memory/4708-165-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-166-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-169-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-172-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-175-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-177-0x0000000000810000-0x00000000008AE000-memory.dmp

        Filesize

        632KB

      • memory/4708-181-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-158-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-185-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-188-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-189-0x0000000000810000-0x00000000008AE000-memory.dmp

        Filesize

        632KB

      • memory/4708-192-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-195-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-198-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-201-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-205-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4708-208-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB