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Analysis

  • max time kernel
    122s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 10:08

General

  • Target

    161a2a8a9f2c151f9c39536337481d19.exe

  • Size

    174KB

  • MD5

    161a2a8a9f2c151f9c39536337481d19

  • SHA1

    095468be7e5143a0bf3485d42a2de92ee0ef18f0

  • SHA256

    56e914fa4a931af91b4ae635a2929834eeb7dbd6d9ad4a5188b7f8c7bc2a2176

  • SHA512

    7f32bfc0605b9386d453ecc68585862052c2beec48842bf04d907c8a0cc7415a6fe51b2072b77d656f8b159973f22c3368e90f2cbad5b371c9aae5e77227eeef

  • SSDEEP

    3072:unOn7t7XpdpCCTg/sxFgJDKfuVCUCkIRzyXmcGpZuif5nifLGj9434GBFj0dzJ:uKpdcCrTquLhRO/CZfxEZNjj0H

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\161a2a8a9f2c151f9c39536337481d19.exe
    "C:\Users\Admin\AppData\Local\Temp\161a2a8a9f2c151f9c39536337481d19.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2108
    • C:\Users\Admin\AppData\Local\Temp\nso846E.tmp\northstar.exe
      C:\Users\Admin\AppData\Local\Temp\nso846E.tmp\northstar.exe /u4e820da5-3514-4c8f-ba03-600d5bc06f2f /e2717787 /dT201212271617
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of SetWindowsHookEx
      PID:2176

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab8B70.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar8BC1.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • \Users\Admin\AppData\Local\Temp\nso846E.tmp\System.dll

    Filesize

    21KB

    MD5

    5ebc73650256e9c8ddbcda231db829a1

    SHA1

    988d4535e18754ab2a6248abae96c5697d7dbcd5

    SHA256

    1eaa543842df7795404184e8892a1654b0773dbc9bd8b54c7fdb9e68f4355493

    SHA512

    b21266e76fc7263af982a1336a766e47ccf348ed56b305dbb09f03574c9b2a7309f12200e80d86f9a251381be6e87a41206447f11c51899cb31fba10da1d5270

  • \Users\Admin\AppData\Local\Temp\nso846E.tmp\northstar.exe

    Filesize

    275KB

    MD5

    a1e2472db630c7043c2fb486a17300bc

    SHA1

    f289644ce703d4050b49ec0606c543a8f3928624

    SHA256

    0e990e290a6c3b4b3a3ac7495bfc197b698799ae840a06586eb5d5cbe74a1bd7

    SHA512

    3571478424b464b17ef58f43ffca57e09e539e4b83ed1a158694ab4f473001ceb37cb72c850d701767625d515f129a14a1f60446ace745517658923467b01823

  • memory/2108-82-0x0000000000400000-0x000000000043E000-memory.dmp

    Filesize

    248KB

  • memory/2176-15-0x0000000074470000-0x0000000074A1B000-memory.dmp

    Filesize

    5.7MB

  • memory/2176-16-0x0000000074470000-0x0000000074A1B000-memory.dmp

    Filesize

    5.7MB

  • memory/2176-17-0x0000000000170000-0x00000000001B0000-memory.dmp

    Filesize

    256KB

  • memory/2176-78-0x0000000074470000-0x0000000074A1B000-memory.dmp

    Filesize

    5.7MB