Overview

overview

10

Static

static

10

backutil.exe

windows10-2004-x64

10

backutil.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    backutil.exe
  • Size 64KB
  • Sample260306-ryadmaav6z
  • SHA256 32857e2a8ef4cfc04b1e62b939cf979a428cfb09bb3bb3a998a37c3a1e96f697
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
ratasyncrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 1.0.7

C2

  • fly88.limited:4782

  • fly88.limited:8808

  • fly88.limited:6666

  • fly88.limited:443

  • fly88.limited:8888

  • fly88.limited:8848

  • c168.casino:4782

  • c168.casino:8808

  • c168.casino:6666

  • c168.casino:443

  • c168.casino:8888

  • c168.casino:8848

  • c168.fund:4782

  • c168.fund:8808

  • c168.fund:6666

  • c168.fund:443

  • c168.fund:8888

  • c168.fund:8848

  • OK8386.CHEAP:4782

  • OK8386.CHEAP:8808

Mutex

  • BackUtil

Attributes
  • delay

    1

  • install

    true

  • install_file

    backutil.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • Async RAT payload 1 IoCs
    rat
  • Asyncrat family
    asyncrat
  • Unsigned PE 1 IoCs

    Checks for missing Authenticode signature.

File Explorer

  • backutil.exe
    .exe 64KB

backutil.exe

  • IMPHASH f34d5f2d4577ed6d9ceec516c1f5a744
  • SHA256 32857e2a8ef4cfc04b1e62b939cf979a428cfb09bb3bb3a998a37c3a1e96f697
  • MD5 SHA1 SHA512 SSDEEP TLSH
windows:4windowsx86arch:x86

  • Async RAT payload

    rat

  • Unsigned PE

    Checks for missing Authenticode signature.

Minor OS version
0
Major OS version
4
Entry point
68078
Magic Number
267
Subsystem
IMAGE_SUBSYSTEM_WINDOWS_GUI
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_NO_SEH IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
PDB paths