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Analysis

  • max time kernel
    135s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/10/2022, 14:12

General

  • Target

    11ba7786f3413f27d78ee7a61e765e17a74c1255a426ffe4d05fd66d4a4ed4c8.exe

  • Size

    60KB

  • MD5

    921532d96f4b89101035374a84f9ffe0

  • SHA1

    dd72f16d97f810da90af0c12fc26999a7a2e455f

  • SHA256

    11ba7786f3413f27d78ee7a61e765e17a74c1255a426ffe4d05fd66d4a4ed4c8

  • SHA512

    23ed51f061d5b15110324fa948a97670a0e42bb7494146da4dae03d1e11f2d6cbb85035b54bace396e7f15b70f135bd34d490baf8634ff76daf1086b58369a78

  • SSDEEP

    1536:8KqxQGmzLOJXEm5pnnvKfM0cu5tz9r4KbBi6GePt:Ej4kEm76cOzJbi6Ge

Score
10/10

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 15 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 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\11ba7786f3413f27d78ee7a61e765e17a74c1255a426ffe4d05fd66d4a4ed4c8.exe
    "C:\Users\Admin\AppData\Local\Temp\11ba7786f3413f27d78ee7a61e765e17a74c1255a426ffe4d05fd66d4a4ed4c8.exe"
    1⤵
    • Modifies firewall policy service
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1540
    • C:\Users\Admin\AppData\Roaming\nightupdate\svchost.exe
      "C:\Users\Admin\AppData\Roaming\nightupdate\svchost.exe"
      2⤵
      • Modifies firewall policy service
      • Executes dropped EXE
      • Adds Run key to start application
      PID:2388

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\nightupdate\svchost.exe

    Filesize

    60KB

    MD5

    921532d96f4b89101035374a84f9ffe0

    SHA1

    dd72f16d97f810da90af0c12fc26999a7a2e455f

    SHA256

    11ba7786f3413f27d78ee7a61e765e17a74c1255a426ffe4d05fd66d4a4ed4c8

    SHA512

    23ed51f061d5b15110324fa948a97670a0e42bb7494146da4dae03d1e11f2d6cbb85035b54bace396e7f15b70f135bd34d490baf8634ff76daf1086b58369a78

  • C:\Users\Admin\AppData\Roaming\nightupdate\svchost.exe

    Filesize

    60KB

    MD5

    921532d96f4b89101035374a84f9ffe0

    SHA1

    dd72f16d97f810da90af0c12fc26999a7a2e455f

    SHA256

    11ba7786f3413f27d78ee7a61e765e17a74c1255a426ffe4d05fd66d4a4ed4c8

    SHA512

    23ed51f061d5b15110324fa948a97670a0e42bb7494146da4dae03d1e11f2d6cbb85035b54bace396e7f15b70f135bd34d490baf8634ff76daf1086b58369a78