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Analysis

  • max time kernel
    90s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/02/2024, 01:28

General

  • Target

    88312d4109d49430e7ade9064ca2d252.exe

  • Size

    82KB

  • MD5

    88312d4109d49430e7ade9064ca2d252

  • SHA1

    8fb506a8792b26437d42cea2999f09dead604260

  • SHA256

    e597c1588a75c77a9e41413069c649691a4fb8673281df15d98c4f13a6dcd684

  • SHA512

    33027e3dcc6cfb0813db96c06f858be01172adf9ba68d9d5d1a8bee27319fede4410b9b0f5bb83795970e06340ad499fbc48b050032ad46f0f290fb9c1f46430

  • SSDEEP

    1536:2EkjY1zy214Qay0DGkJ7qAELVigJvmcpUoJzv5oZaScIB2/D9k:dkjAJ4dDGkJ+AI0Qauzv5oZqT/R

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\88312d4109d49430e7ade9064ca2d252.exe
    "C:\Users\Admin\AppData\Local\Temp\88312d4109d49430e7ade9064ca2d252.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2668
    • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
      "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:4168

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsx4D94.tmp\InstallOptions.dll

    Filesize

    13KB

    MD5

    d765c492c21689e3d9d61634371fd861

    SHA1

    ac200933671ae52c9d5544d0e2e8e9144d286c83

    SHA256

    551e6042dd494ea01549555ffc194ab9729da09058ec714eb368dd06642c9bbc

    SHA512

    9919a9e848c8f1e26c75d0d29207571e4b86a4140bd554743d2c1f8bd7f386fe4919345b163d89a5d907fb165e435ba0ac5f6b1101713636141f156a420e2e0f

  • C:\Users\Admin\AppData\Local\Temp\nsx4D94.tmp\System.dll

    Filesize

    10KB

    MD5

    fe24766ba314f620d57d0cf7339103c0

    SHA1

    8641545f03f03ff07485d6ec4d7b41cbb898c269

    SHA256

    802ef71440f662f456bed6283a5ff78066af016897fe6bfd29cac6edc2967bbd

    SHA512

    60d36959895cebf29c4e7713e6d414980139c7aa4ed1c8c96fefb672c1263af0ce909fb409534355895649c0e8056635112efb0da2ba05694446aec2ca77e2e3

  • C:\Users\Admin\AppData\Local\Temp\nsx4D94.tmp\ioSpecial.ini

    Filesize

    641B

    MD5

    04996d0c003bf8ee052745cc9745efc6

    SHA1

    5bf97c2e9eb559221ba207fc23758dc4f5a6b9ee

    SHA256

    95ea492a159441521b8f738de37cb50c31dacbf153aa6d1aceedd8fed20585e5

    SHA512

    7b376812750960342c7e8eaa77270fec609cfe82e5c6f3787373d7db5cef1c228edb0135a6cd3325bd41f099b46791586ea9a6821d91042b307c6d03512c1300

  • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

    Filesize

    82KB

    MD5

    88312d4109d49430e7ade9064ca2d252

    SHA1

    8fb506a8792b26437d42cea2999f09dead604260

    SHA256

    e597c1588a75c77a9e41413069c649691a4fb8673281df15d98c4f13a6dcd684

    SHA512

    33027e3dcc6cfb0813db96c06f858be01172adf9ba68d9d5d1a8bee27319fede4410b9b0f5bb83795970e06340ad499fbc48b050032ad46f0f290fb9c1f46430