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Analysis

  • max time kernel
    152s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/10/2022, 18:20

General

  • Target

    5b6ec79c6a468f6701d8d8207f42d3dfe6bd24e93b073a465948e5211471387e.exe

  • Size

    296KB

  • MD5

    031c87230dea9dfe59b202a111cb3ba0

  • SHA1

    4ad912c3c63878bde05c67c05e25bcd253b8b2ce

  • SHA256

    5b6ec79c6a468f6701d8d8207f42d3dfe6bd24e93b073a465948e5211471387e

  • SHA512

    e1ecf74e7020f030547cfa045035e97c5785c403dd9a73fd5bf90509e425751035030927859e21e8a163604fae6780158f3aa67443343e5b91722e1c44fb7fe4

  • SSDEEP

    6144:0FaKPrONaJ2BH8DtU7b5dU14Uf797SNIbVRGAw2+8e9KZPY88NM:0FzrO2C8qX5dS7cuDGH2+8xm88O

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 55 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\5b6ec79c6a468f6701d8d8207f42d3dfe6bd24e93b073a465948e5211471387e.exe
    "C:\Users\Admin\AppData\Local\Temp\5b6ec79c6a468f6701d8d8207f42d3dfe6bd24e93b073a465948e5211471387e.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:1380
    • C:\Users\Admin\jaacui.exe
      "C:\Users\Admin\jaacui.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:2304

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\jaacui.exe

    Filesize

    296KB

    MD5

    f4fd8642bc1dc33d28d385b0eef42da2

    SHA1

    c7ca047cd25de51eeced392ccdd37c3248314e95

    SHA256

    80e18ba973a59355632eebc05d41cd1695b4ba99208b049f3af0089812b4db87

    SHA512

    5cfc68834af2c8528b64d36acc754d0f995a183ed156788e699e2233e43f6e03f2f746f6ea00d9538406496d1e8bb54667114f9775932c4734da0b8035def772

  • C:\Users\Admin\jaacui.exe

    Filesize

    296KB

    MD5

    f4fd8642bc1dc33d28d385b0eef42da2

    SHA1

    c7ca047cd25de51eeced392ccdd37c3248314e95

    SHA256

    80e18ba973a59355632eebc05d41cd1695b4ba99208b049f3af0089812b4db87

    SHA512

    5cfc68834af2c8528b64d36acc754d0f995a183ed156788e699e2233e43f6e03f2f746f6ea00d9538406496d1e8bb54667114f9775932c4734da0b8035def772