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Analysis

  • max time kernel
    134s
  • max time network
    181s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 20:31

General

  • Target

    3b63d7222681fa59ebceb25e055a671a.exe

  • Size

    174KB

  • MD5

    3b63d7222681fa59ebceb25e055a671a

  • SHA1

    a8d534a18971145d337832ba1ef56c3f16117e9d

  • SHA256

    47c90d55074d2e5990824879cfebb7a09745f0c0779c7f85424146d06ad1cbbb

  • SHA512

    b16b80c50372d4c95e400fb77a674810fda394d1a9d8aca5d47ea5ffd6ea2752bf17752ce41300974bf98fab69c13668c7d56e95f535fee83adee5837e351645

  • SSDEEP

    3072:WnOn7t7XpdpCCTg/sxFgJDZ2CG6m56OX8QPhommcAjDhF1V:WKpdcCrTqtGzIOzP/mcAjDhF1

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3b63d7222681fa59ebceb25e055a671a.exe
    "C:\Users\Admin\AppData\Local\Temp\3b63d7222681fa59ebceb25e055a671a.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2568
    • C:\Users\Admin\AppData\Local\Temp\nsjAEB.tmp\northstar.exe
      C:\Users\Admin\AppData\Local\Temp\nsjAEB.tmp\northstar.exe /u4e9422ac-75a8-4a0f-9b5b-46785bc06f2f /e4806050 /dT201212300322
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of SetWindowsHookEx
      PID:2604

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab73EA.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar741C.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • \Users\Admin\AppData\Local\Temp\nsjAEB.tmp\System.dll

    Filesize

    21KB

    MD5

    5ebc73650256e9c8ddbcda231db829a1

    SHA1

    988d4535e18754ab2a6248abae96c5697d7dbcd5

    SHA256

    1eaa543842df7795404184e8892a1654b0773dbc9bd8b54c7fdb9e68f4355493

    SHA512

    b21266e76fc7263af982a1336a766e47ccf348ed56b305dbb09f03574c9b2a7309f12200e80d86f9a251381be6e87a41206447f11c51899cb31fba10da1d5270

  • \Users\Admin\AppData\Local\Temp\nsjAEB.tmp\northstar.exe

    Filesize

    275KB

    MD5

    a1e2472db630c7043c2fb486a17300bc

    SHA1

    f289644ce703d4050b49ec0606c543a8f3928624

    SHA256

    0e990e290a6c3b4b3a3ac7495bfc197b698799ae840a06586eb5d5cbe74a1bd7

    SHA512

    3571478424b464b17ef58f43ffca57e09e539e4b83ed1a158694ab4f473001ceb37cb72c850d701767625d515f129a14a1f60446ace745517658923467b01823

  • memory/2568-12-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB

  • memory/2568-13-0x000000006E3C0000-0x000000006E3CD000-memory.dmp

    Filesize

    52KB

  • memory/2568-91-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB

  • memory/2568-0-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB

  • memory/2604-22-0x0000000000570000-0x00000000005B0000-memory.dmp

    Filesize

    256KB

  • memory/2604-85-0x0000000000570000-0x00000000005B0000-memory.dmp

    Filesize

    256KB

  • memory/2604-86-0x0000000000570000-0x00000000005B0000-memory.dmp

    Filesize

    256KB

  • memory/2604-87-0x0000000073F60000-0x000000007450B000-memory.dmp

    Filesize

    5.7MB

  • memory/2604-21-0x0000000073F60000-0x000000007450B000-memory.dmp

    Filesize

    5.7MB