Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    11/05/2026, 12:13

General

  • Target
    AA_v3-3.exe
  • Size 798KB
  • Sample260511-pdtwescw4k
  • SHA256 ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: FlawedAmmyy RAT

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe
    "C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • System Location Discovery: System Language Discovery
    PID:4780
  • C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe
    "C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe" -service -lunch
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4600
    • C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe
      "C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe"
      2⤵
      • Checks computer location settings
      • Writes to the Master Boot Record (MBR)
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4956

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        settings3.bin

        • Path C:\ProgramData\AMMYY\settings3.bin
        • Size 334B
        • SHA256 508077d83dbf8652075ea8227bda178d3397ac64fda345d1e32c43d755d5f228
        • MD5 SHA1 SHA512 TLSH