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Analysis

  • max time kernel
    156s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/10/2022, 15:17

General

  • Target

    5b3030a61534330ecefb6b38f246d829af7223faac6e59b19421951a3b38f0b8.exe

  • Size

    184KB

  • MD5

    a05c276308be85cf83c9203e1f913700

  • SHA1

    d877f37b3b626679c652cef69c5e89efbef303c6

  • SHA256

    5b3030a61534330ecefb6b38f246d829af7223faac6e59b19421951a3b38f0b8

  • SHA512

    5daab2daf74393ded5a9a4bd6d356c45b97f63eeca7b85f8c08c23b275a36cfed66a1ab3b78f6af0307f7f3fb7b1042f1d8c58b74d2010d3d70c34d04dc17cb9

  • SSDEEP

    3072:6DGXZ4xu7o897rl2Y4HpRSQ8nsl8Koay6VUSB:PGulF8HpRpAKoahVUs

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 29 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5b3030a61534330ecefb6b38f246d829af7223faac6e59b19421951a3b38f0b8.exe
    "C:\Users\Admin\AppData\Local\Temp\5b3030a61534330ecefb6b38f246d829af7223faac6e59b19421951a3b38f0b8.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4436
    • C:\Users\Admin\grdaib.exe
      "C:\Users\Admin\grdaib.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:3864

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\grdaib.exe

    Filesize

    184KB

    MD5

    7b5ad06a8c3f3d7a19a929cfa046c359

    SHA1

    6f7f87b8f5dc8ac295e015e83df947f08ad1f62f

    SHA256

    d9813d54caf81603fec45739820ef4adfa024e9ee1ac41e0f3bfa077a28cbf16

    SHA512

    2442eff305444c8b5d68ffa8c620933d96412291adb023b0d083e9184fb4c0e61ca751f81bdfac3442b9758b084607dc8caca3f2ac5e373603aa32d09ec63f80

  • C:\Users\Admin\grdaib.exe

    Filesize

    184KB

    MD5

    7b5ad06a8c3f3d7a19a929cfa046c359

    SHA1

    6f7f87b8f5dc8ac295e015e83df947f08ad1f62f

    SHA256

    d9813d54caf81603fec45739820ef4adfa024e9ee1ac41e0f3bfa077a28cbf16

    SHA512

    2442eff305444c8b5d68ffa8c620933d96412291adb023b0d083e9184fb4c0e61ca751f81bdfac3442b9758b084607dc8caca3f2ac5e373603aa32d09ec63f80