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Analysis

  • max time kernel
    144s
  • max time network
    147s
  • 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, 11:23

General

  • Target

    4a1e767eb4aec3c56738040db9e5e1f9a2f3e0536cf25d93abf7bc4145b8f55e.exe

  • Size

    6.9MB

  • MD5

    8272b6835e900c6b0bea3870ebb66e6c

  • SHA1

    0eea949c0b36a1a53fd89be8670fbcff9ae8ca30

  • SHA256

    4a1e767eb4aec3c56738040db9e5e1f9a2f3e0536cf25d93abf7bc4145b8f55e

  • SHA512

    f0fa9ec772b7c76beb898e75325a1fe1bd13a505ab3979b3ad2821cda2d119ea04202ff824331b8dba54b5f7a70cf6309dfd3a9975f1e483e2ab73ae4b8931e3

  • SSDEEP

    196608:9RW8Bq+q3WGhRQY914E1DF+V3bm/LCGNq3eUeKP3gdVfzj:9QeqbhPK4DFY4CtOUYVfzj

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\4a1e767eb4aec3c56738040db9e5e1f9a2f3e0536cf25d93abf7bc4145b8f55e.exe
    "C:\Users\Admin\AppData\Local\Temp\4a1e767eb4aec3c56738040db9e5e1f9a2f3e0536cf25d93abf7bc4145b8f55e.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2012
    • C:\Users\Admin\AppData\Local\Temp\is-RNPUR.tmp\4a1e767eb4aec3c56738040db9e5e1f9a2f3e0536cf25d93abf7bc4145b8f55e.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-RNPUR.tmp\4a1e767eb4aec3c56738040db9e5e1f9a2f3e0536cf25d93abf7bc4145b8f55e.tmp" /SL5="$6011E,6953145,68096,C:\Users\Admin\AppData\Local\Temp\4a1e767eb4aec3c56738040db9e5e1f9a2f3e0536cf25d93abf7bc4145b8f55e.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:640
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\system32\schtasks.exe" /Query
        3⤵
          PID:3948
        • C:\Program Files (x86)\WMAFormat\wmaformat.exe
          "C:\Program Files (x86)\WMAFormat\wmaformat.exe" -i
          3⤵
          • Executes dropped EXE
          PID:3944
        • C:\Program Files (x86)\WMAFormat\wmaformat.exe
          "C:\Program Files (x86)\WMAFormat\wmaformat.exe" -s
          3⤵
          • Executes dropped EXE
          PID:4904
        • C:\Windows\SysWOW64\net.exe
          "C:\Windows\system32\net.exe" helpmsg 11
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2904
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 helpmsg 11
            4⤵
              PID:3340

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        1.1MB

        MD5

        f6220b9c275c36809b26fd469480a69e

        SHA1

        24029cdb82b731b41bbb8143460d6d0d9bf13d80

        SHA256

        4d2a8385530ee005421c4528e58ca745049b118df47b08f8cbddfc7eebf3a25d

        SHA512

        363237feb12b65ab46792fc2c8de3deab6a1c8324c15f0e33558cb7090c4e9c5d0b8d9df90c42076c801d375fbc2fa341250fa23702d43428f567fc1b370000e

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

        Filesize

        1.1MB

        MD5

        0961845ce70a36e6331161e413c07473

        SHA1

        dc08a75d93fc44aec86014e2cfdab48b4e9414c6

        SHA256

        b5abc10c2cb53b5ee6fc17f2dce9628cfcdb67d450ec3f267530e80cb1c29423

        SHA512

        a8f694d753ee50b9df234caaf907e3dbe8384b257069820f8b7ffbe008fa7845906e079abff98af5839056eae717427f58d72bb3e246287db880fbf90215fa61

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

        Filesize

        251KB

        MD5

        484f0dba884c6cae73e68c07195c94b5

        SHA1

        e867dc83fa9b70cc9d0ca6624d98af2accabeac0

        SHA256

        eba28e5136cd5412eef52615e9a19355c29d7974f9567abee2ef1e07a4111a7f

        SHA512

        ee360a5893ac75002e1d8a1c58375d11ee1d2cec22d89fba1b9667951d4b8083b10d540f617aa071cce6916dc1bb7240d7c0e047978c7415a8cdc944d32587d6

      • C:\Users\Admin\AppData\Local\Temp\is-47IH1.tmp\_isetup\_iscrypt.dll

        Filesize

        2KB

        MD5

        a69559718ab506675e907fe49deb71e9

        SHA1

        bc8f404ffdb1960b50c12ff9413c893b56f2e36f

        SHA256

        2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

        SHA512

        e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

      • C:\Users\Admin\AppData\Local\Temp\is-47IH1.tmp\_isetup\_isdecmp.dll

        Filesize

        19KB

        MD5

        3adaa386b671c2df3bae5b39dc093008

        SHA1

        067cf95fbdb922d81db58432c46930f86d23dded

        SHA256

        71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

        SHA512

        bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

      • C:\Users\Admin\AppData\Local\Temp\is-RNPUR.tmp\4a1e767eb4aec3c56738040db9e5e1f9a2f3e0536cf25d93abf7bc4145b8f55e.tmp

        Filesize

        687KB

        MD5

        f448d7f4b76e5c9c3a4eaff16a8b9b73

        SHA1

        31808f1ffa84c954376975b7cdb0007e6b762488

        SHA256

        7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

        SHA512

        f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

      • memory/640-7-0x00000000006A0000-0x00000000006A1000-memory.dmp

        Filesize

        4KB

      • memory/640-160-0x0000000000400000-0x00000000004BC000-memory.dmp

        Filesize

        752KB

      • memory/640-162-0x00000000006A0000-0x00000000006A1000-memory.dmp

        Filesize

        4KB

      • memory/2012-2-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/2012-0-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/2012-159-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/3944-151-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3944-152-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/3944-154-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-161-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-178-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-156-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-165-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-166-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-169-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-172-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-175-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-179-0x0000000000910000-0x00000000009AE000-memory.dmp

        Filesize

        632KB

      • memory/4904-158-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-180-0x0000000000910000-0x00000000009AE000-memory.dmp

        Filesize

        632KB

      • memory/4904-185-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-188-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-189-0x0000000000910000-0x00000000009AE000-memory.dmp

        Filesize

        632KB

      • memory/4904-192-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-195-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-198-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-202-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-205-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB

      • memory/4904-208-0x0000000000400000-0x00000000005CF000-memory.dmp

        Filesize

        1.8MB