Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-10-2023 14:04

General

  • Target

    b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe

  • Size

    726KB

  • MD5

    d22d719495f23e38805bbea5df434abb

  • SHA1

    3cfeeb974e65c0ba671d81459d2c6b694d5d4eaf

  • SHA256

    b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20

  • SHA512

    d87670775d222b25b329377c8d26c2a4c88ce6b1aa1d6fc004b95ad93f377fd56fb03e709b4b61b26c4fcf06fe477e42afe9f9715884ea91699548b1e4d4a4c7

  • SSDEEP

    12288:ozJUxbtiiTHRJuEkQO7EwC2ZwFRtAdRXRryd+sq1zsgp:o9oNTHRz/O7rT6FRteRXR2IsqXp

Score
10/10

Malware Config

Signatures

  • FlawedAmmyy RAT

    Remote-access trojan based on leaked code for the Ammyy remote admin software.

  • Drops file in System32 directory 4 IoCs
  • Modifies data under HKEY_USERS 9 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
    "C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe"
    1⤵
      PID:4220
    • C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
      "C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe" -service -lunch
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:748
      • C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe
        "C:\Users\Admin\AppData\Local\Temp\b5f65158f6713aa2fb7dd0b09d5f6dd39ae3cd1212ad330da207244d522aee20.exe"
        2⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1696

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • C:\ProgramData\AMMYY\hr

      Filesize

      22B

      MD5

      7d8a3b4643febcb8281981dad0c2eb80

      SHA1

      474059b366d2e71859cef61ad3255b72169a6b5d

      SHA256

      39f07b0fd9c3cd6ce982a3358718c161d2cddf7cda9166d796e34d62ef6fe2f0

      SHA512

      ceafa73221d724029319d4aea3c7196397c82d20f7b98129120e179a94d5f8c0d6ca27b2d299cc9b8688cdfa4d343f6f48c60bb9f8029758b1f7654b7346599e

    • C:\ProgramData\AMMYY\hr3

      Filesize

      68B

      MD5

      997e6633a8151d797843790b946906cb

      SHA1

      5100e9f873ee45d45271e58f322e5e1e2122d2a5

      SHA256

      bf47804fa789f7e65b511296a39e7a78079f1766030fe3df27cfebc11484c375

      SHA512

      fa7e9ea5fc0170ac83579f9711954f7f19263f6225e266fed76f6ca9d25d3a4b7182a672088120c35180f20d297654159711741ff6eaaa61e088c4f7e20d45b0

    • C:\ProgramData\AMMYY\settings3.bin

      Filesize

      271B

      MD5

      e4f7224ed356915816bebb715326d18a

      SHA1

      8b441bb4276212b9e774cba75fdbb723cb68af93

      SHA256

      74378574282fceda54a869e384dffdf9d7d202d5a1937d781fcc501d6115e93c

      SHA512

      5a7fc84ea39311ef5277aaf3fa0e207b6e095ec236ea877756da7849d38678b8e73a7bd5ea49ae51ae730adc2a56cd79dd0fc3be63bcbb58ae50f9f030140ba2