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Analysis

  • max time kernel
    91s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2022, 07:42

General

  • Target

    1777653d60edd3e15c0670e99b2fa0d7efed3400614e59b3036b1196d67198d1.exe

  • Size

    151KB

  • MD5

    ae94b23012157c6c7205b8428466fd47

  • SHA1

    b630a8f7ee8806263b2abe5b0a0884ecf2193ba5

  • SHA256

    1777653d60edd3e15c0670e99b2fa0d7efed3400614e59b3036b1196d67198d1

  • SHA512

    c828f741706e9a3f5c2772e1f8e217718e7ed4d54bf1bd55b61bb29b96ae1a668362e031252184b9898e9f6ed8a9d78aaaf2dd0bda05fc4a2f615f32fae27fb6

  • SSDEEP

    3072:sLANnN/I9YHmMxd55YjB+4GSvquAJvJDsuMqd:sLANnq983vS5AN5t

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 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 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1777653d60edd3e15c0670e99b2fa0d7efed3400614e59b3036b1196d67198d1.exe
    "C:\Users\Admin\AppData\Local\Temp\1777653d60edd3e15c0670e99b2fa0d7efed3400614e59b3036b1196d67198d1.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1168
    • C:\Users\Admin\AppData\Roaming\test\svhst.exe
      "C:\Users\Admin\AppData\Roaming\test\svhst.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4828
      • C:\Users\Admin\AppData\Roaming\test\svhst.exe
        "C:\Users\Admin\AppData\Roaming\test\svhst.exe"
        3⤵
        • Executes dropped EXE
        PID:4764
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4764 -s 180
          4⤵
          • Program crash
          PID:1692
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4764 -s 184
          4⤵
          • Program crash
          PID:2272
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4828 -s 780
        3⤵
        • Program crash
        PID:4040
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4828 -ip 4828
    1⤵
      PID:640
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4764 -ip 4764
      1⤵
        PID:788
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4764 -ip 4764
        1⤵
          PID:1772

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Roaming\test\svhst.exe

          Filesize

          151KB

          MD5

          e8c3557fad4cb5036c931301b0dcb171

          SHA1

          f145b92cbeb588b18c1a7784f566eba89e7dc97a

          SHA256

          38af47e3d3304ff9448b51a214883f8347d3802d7f677ff43374c3ef046a8706

          SHA512

          bf7c2cb74e7c469d51f7c025701223cdaaa1813243843e07186ff1675c9df8b5bf1ef1626fa15e9cbc96ab456e7797162517d42de198112c910b3a2279c7ddc3

        • C:\Users\Admin\AppData\Roaming\test\svhst.exe

          Filesize

          151KB

          MD5

          e8c3557fad4cb5036c931301b0dcb171

          SHA1

          f145b92cbeb588b18c1a7784f566eba89e7dc97a

          SHA256

          38af47e3d3304ff9448b51a214883f8347d3802d7f677ff43374c3ef046a8706

          SHA512

          bf7c2cb74e7c469d51f7c025701223cdaaa1813243843e07186ff1675c9df8b5bf1ef1626fa15e9cbc96ab456e7797162517d42de198112c910b3a2279c7ddc3

        • C:\Users\Admin\AppData\Roaming\test\svhst.exe

          Filesize

          151KB

          MD5

          e8c3557fad4cb5036c931301b0dcb171

          SHA1

          f145b92cbeb588b18c1a7784f566eba89e7dc97a

          SHA256

          38af47e3d3304ff9448b51a214883f8347d3802d7f677ff43374c3ef046a8706

          SHA512

          bf7c2cb74e7c469d51f7c025701223cdaaa1813243843e07186ff1675c9df8b5bf1ef1626fa15e9cbc96ab456e7797162517d42de198112c910b3a2279c7ddc3

        • memory/1168-134-0x0000000002250000-0x0000000002256000-memory.dmp

          Filesize

          24KB

        • memory/4764-141-0x0000000000400000-0x000000000041C000-memory.dmp

          Filesize

          112KB