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Analysis

  • max time kernel
    92s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2024, 07:07

General

  • Target

    uninstall.exe

  • Size

    289KB

  • MD5

    cceb3a3b9dbfed85bb656f2be7d8f16d

  • SHA1

    8aadc169015c9a38f06d9d2aad51005a0c3c5d9c

  • SHA256

    dcb24a0e6e823dde6add4d3e8019ee33c9d38c457291aff860cd350e585251a5

  • SHA512

    ffb9ab7a133254af9eeb56a0e98fdab52a6f6ce831d8669b2613ffe9b8a12ed20064d630ff3ada771ea909fb4d4c824539882728149b55c69145751f38c13b7e

  • SSDEEP

    6144:Ue34RzRg4l8ai5PQtTZ763J8eWW43YLYjn5uO7D32fuCa7BmC:Uzq4OaQQTYJ8eP4/L5uO7D3f5BT

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • NSIS installer 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\uninstall.exe
    "C:\Users\Admin\AppData\Local\Temp\uninstall.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4524
    • 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
      • System Location Discovery: System Language Discovery
      PID:4892

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsnB334.tmp\aminsis.dll

    Filesize

    567KB

    MD5

    450753ad96785a240a39deccab3af0d0

    SHA1

    21c544064d2ffa6444508268ce258a330d459fc5

    SHA256

    1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

    SHA512

    c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab

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

    Filesize

    289KB

    MD5

    cceb3a3b9dbfed85bb656f2be7d8f16d

    SHA1

    8aadc169015c9a38f06d9d2aad51005a0c3c5d9c

    SHA256

    dcb24a0e6e823dde6add4d3e8019ee33c9d38c457291aff860cd350e585251a5

    SHA512

    ffb9ab7a133254af9eeb56a0e98fdab52a6f6ce831d8669b2613ffe9b8a12ed20064d630ff3ada771ea909fb4d4c824539882728149b55c69145751f38c13b7e