Analysis

  • max time kernel
    10s
  • max time network
    84s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-01-2024 07:21

General

  • Target

    AA_v3.exe

  • Size

    755KB

  • MD5

    11bc606269a161555431bacf37f7c1e4

  • SHA1

    63c52b0ac68ab7464e2cd777442a5807db9b5383

  • SHA256

    1831806fc27d496f0f9dcfd8402724189deaeb5f8bcf0118f3d6484d0bdee9ed

  • SHA512

    0be867fce920d493d2a37f996627bceea87621ba4071ae4383dd4a24748eedf7dc5ca6db089217b82ec38870248c6840f785683bf359d1014c7109e7d46dd90f

  • SSDEEP

    12288:XVFUEuNmwvGrw9i0aTGRGicBckyyFRtWY1i3FTsvOVV0gz:3UEUUw9RaTNicBrPFRtJ1iVTsC5z

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\AA_v3.exe
    "C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"
    1⤵
      PID:4812
    • C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
      "C:\Users\Admin\AppData\Local\Temp\AA_v3.exe" -service -lunch
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:3660
      • C:\Users\Admin\AppData\Local\Temp\AA_v3.exe
        "C:\Users\Admin\AppData\Local\Temp\AA_v3.exe"
        2⤵
        • Drops file in System32 directory
        • Modifies data under HKEY_USERS
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4696

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • C:\ProgramData\AMMYY\hr

      Filesize

      22B

      MD5

      8c138817d56f2158a930b4d1317a5e2b

      SHA1

      d24f12079ae2e41a56b707024d9d5de70093fdd8

      SHA256

      710b3369c0737cc720da2815b5197b8d1b2d810281c98a45db1c8cd044488442

      SHA512

      e79573195010d030f96f5cb1bfbd027351bb4c2bbc77643ff82d5cdf836ff5901065262a829ae15276513b2f4789ed4b0fc7f5fa55097841a612382e46303f6b

    • C:\ProgramData\AMMYY\hr3

      Filesize

      68B

      MD5

      bd3e7f25b0cf0884014638a6dc456eb6

      SHA1

      a0b5278d742d548c6944ecd361eacacc73c9e0c9

      SHA256

      408543ef43c8634df8940b3df23e8c12a6542d6b4482c80be5e4174d94842d00

      SHA512

      0a73c49461b0a447686c8759ba1b5493e3ccbc5f794820fd6a05e68db26855d936ae70d3b5438299cc5c87f36f6ad27dde200f4a387d5ad1aff57b6e53d8a567

    • C:\ProgramData\AMMYY\settings3.bin

      Filesize

      271B

      MD5

      714f2508d4227f74b6adacfef73815d8

      SHA1

      a35c8a796e4453c0c09d011284b806d25bdad04c

      SHA256

      a5579945f23747541c0e80b79e79375d4ca44feafcd425ee9bd9302e35312480

      SHA512

      1171a6eac6d237053815a40c2bcc2df9f4209902d6157777377228f3b618cad50c88a9519444ed5c447cf744e4655272fb42dabb567df85b4b19b1a2f1d086d8