Overview

overview

10

Static

static

10

0b91c8aec7...b5.exe

windows10-2004-x64

10

0b91c8aec7...b5.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    75s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    09/09/2026, 06:33

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General

  • Target
    0b91c8aec760cbb6e868f2f6bef49991af89fa520f65e4b9b95eedec5f5c28b5.exe
  • Size 1.1MB
  • Sample260909-ha8f3ssfnd
  • SHA256 0b91c8aec760cbb6e868f2f6bef49991af89fa520f65e4b9b95eedec5f5c28b5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
backdoordiscoveryexecutionflyagent

Malware Config

Signatures

  • Family: FlyAgent

    FlyAgent is a backdoor written in C++.

    backdoorflyagent
  • Detects FlyAgent Backdoor 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
    execution
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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.

    discovery
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0b91c8aec760cbb6e868f2f6bef49991af89fa520f65e4b9b95eedec5f5c28b5.exe
    "C:\Users\Admin\AppData\Local\Temp\0b91c8aec760cbb6e868f2f6bef49991af89fa520f65e4b9b95eedec5f5c28b5.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1292
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"
      2⤵
      • Executes a VBScript file via the Windows Script Host.
      • System Location Discovery: System Language Discovery
      PID:2460
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs"
      2⤵
      • Executes a VBScript file via the Windows Script Host.
      • System Location Discovery: System Language Discovery
      PID:2792

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        VBS3.vbs
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\VBS3.vbs
        • Size 753B
        • SHA256 4f0301568710f7e5ef186a34ba85a911eff5c495645c1d853f6b44413a27065a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/1292-0-0x0000000000400000-0x000000000055F000-memory.dmp
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        memory/1292-12-0x0000000000400000-0x000000000055F000-memory.dmp
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        memory/1292-11-0x0000000000400000-0x000000000055F000-memory.dmp
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