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Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/10/2024, 22:23

General

  • Target

    uninstall.exe

  • Size

    295KB

  • MD5

    8ef2ee0bd9eb868dee5a7c7f2de749bc

  • SHA1

    c5657bffd61edf7b1d36a225ffc3dbf44d8f2f32

  • SHA256

    ce885aa22707ec497138942e7f006c9bfd00fa330189fefc7cd1e4a2ae0f4cc4

  • SHA512

    856060d36cda5fcbfc0e4df9f7676986ef1e72256b863fad2f5fff7e996bd166cfd7c7f87e3a3a85d4d3e04ae9b856088341ec46885b4d4e3440123e5879cb75

  • SSDEEP

    6144:Ee34VyjKTK0HVkUEYA2q5NbrWN83gQwwDuzMn6yDkvE39kojTxDtEY:QyjeKuVnvon+N83LwwiAn6KkM33nxDR

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:836
    • 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:4776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\nswBE01.tmp\aminsis.dll

    Filesize

    567KB

    MD5

    f346047b13f37f79c462e59a6319faa1

    SHA1

    ce9e7cb9719000a69b463fe024c81229e322279f

    SHA256

    e78e0e61707cabec8383f1e74da9db8e0fa123a3a7b36f0080d70fbaed6f7453

    SHA512

    429209cc489ba9ac2d62055b128efb3cded3e31f966c7cdb1aee592ec7a54ab090526705fa2519498d92eb4bc2efa141cd83adc6c251b793388ad1208b172167

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

    Filesize

    295KB

    MD5

    8ef2ee0bd9eb868dee5a7c7f2de749bc

    SHA1

    c5657bffd61edf7b1d36a225ffc3dbf44d8f2f32

    SHA256

    ce885aa22707ec497138942e7f006c9bfd00fa330189fefc7cd1e4a2ae0f4cc4

    SHA512

    856060d36cda5fcbfc0e4df9f7676986ef1e72256b863fad2f5fff7e996bd166cfd7c7f87e3a3a85d4d3e04ae9b856088341ec46885b4d4e3440123e5879cb75