Analysis

  • max time kernel
    111s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 11:25

General

  • Target

    69c5cda07427383dfd835e0e35061f5178093201a6709cc14fc36834fcd3b7ee.exe

  • Size

    4.0MB

  • MD5

    87dd9a924d5c984a2fb097202757c3eb

  • SHA1

    66cd472f720f4f9b47fb8bebefdcbd62221c3be4

  • SHA256

    69c5cda07427383dfd835e0e35061f5178093201a6709cc14fc36834fcd3b7ee

  • SHA512

    20e1638338f838e146ccf9e44d1ac6df9b829fafb9cb2f73dde6177b82412ee09cacb402e21fa1769ac8517655c3aa5ca9f8d52668c6651736f48f762ba5782a

  • SSDEEP

    98304:73S/a/VqVI0hME0Q4uDBB/U6Lx4BO8mCiSdKe5:zS/QwVIu4uDHh4BO1CBdh5

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 35 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\69c5cda07427383dfd835e0e35061f5178093201a6709cc14fc36834fcd3b7ee.exe
    "C:\Users\Admin\AppData\Local\Temp\69c5cda07427383dfd835e0e35061f5178093201a6709cc14fc36834fcd3b7ee.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5072
    • C:\Users\Admin\AppData\Local\Temp\optprosetup.exe
      C:\Users\Admin\AppData\Local\Temp\\optprosetup.exe /VERYSILENT
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2708
      • C:\Users\Admin\AppData\Local\Temp\is-VG60Q.tmp\optprosetup.tmp
        "C:\Users\Admin\AppData\Local\Temp\is-VG60Q.tmp\optprosetup.tmp" /SL5="$80056,3513242,85504,C:\Users\Admin\AppData\Local\Temp\optprosetup.exe" /VERYSILENT
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Loads dropped DLL
        • Adds Run key to start application
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:3588
        • C:\Program Files (x86)\Optimizer Pro\OptProStart.exe
          "C:\Program Files (x86)\Optimizer Pro\OptProStart.exe"
          4⤵
          • Executes dropped EXE
          PID:2540

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\Optimizer Pro\OptProStart.exe

    Filesize

    645KB

    MD5

    4907726aac79f4de2c586ff7a00ed4a2

    SHA1

    3139d373051e57742ca7880d1997881ce45269d3

    SHA256

    1f5fd63f7bff857d4c5925ec6b3f111ac0efd2cb72665439436177dd6a2e4d9d

    SHA512

    2d25f45224cb46dd30ac7b97186486caeed2ae14fc92e6adf78fb003715f43d6e2cf969c2272791b84347bcaf4ff68e65ab519705c729220fe1b3181c640b9f6

  • C:\Program Files (x86)\Optimizer Pro\OptProStart.exe

    Filesize

    645KB

    MD5

    4907726aac79f4de2c586ff7a00ed4a2

    SHA1

    3139d373051e57742ca7880d1997881ce45269d3

    SHA256

    1f5fd63f7bff857d4c5925ec6b3f111ac0efd2cb72665439436177dd6a2e4d9d

    SHA512

    2d25f45224cb46dd30ac7b97186486caeed2ae14fc92e6adf78fb003715f43d6e2cf969c2272791b84347bcaf4ff68e65ab519705c729220fe1b3181c640b9f6

  • C:\Users\Admin\AppData\Local\Temp\is-G7F3C.tmp\itdownload.dll

    Filesize

    200KB

    MD5

    d82a429efd885ca0f324dd92afb6b7b8

    SHA1

    86bbdaa15e6fc5c7779ac69c84e53c43c9eb20ea

    SHA256

    b258c4d7d2113dee2168ed7e35568c8e03341e24e3eafc7a22a0d62e32122ef3

    SHA512

    5bf0c3b8fa5db63205a263c4fa5337188173248bef609ba4d03508c50db1fd1e336f3041ce96d78cc97659357a83e6e422f5b079d893a20a683270e05f5438df

  • C:\Users\Admin\AppData\Local\Temp\is-G7F3C.tmp\itdownload.dll

    Filesize

    200KB

    MD5

    d82a429efd885ca0f324dd92afb6b7b8

    SHA1

    86bbdaa15e6fc5c7779ac69c84e53c43c9eb20ea

    SHA256

    b258c4d7d2113dee2168ed7e35568c8e03341e24e3eafc7a22a0d62e32122ef3

    SHA512

    5bf0c3b8fa5db63205a263c4fa5337188173248bef609ba4d03508c50db1fd1e336f3041ce96d78cc97659357a83e6e422f5b079d893a20a683270e05f5438df

  • C:\Users\Admin\AppData\Local\Temp\is-VG60Q.tmp\optprosetup.tmp

    Filesize

    1.1MB

    MD5

    ef7f8bae72830ceaf53ad9b8425534ca

    SHA1

    c863cf8a9bbbbc46b6b64ce184c999d06ce5ced8

    SHA256

    f4c0503beaa358e281b685c80ef4fe23b51c3dd5cbae4aa26da8c33d9f412766

    SHA512

    a657ccf1197710a427e7e434634ca613156856fe27e5cd39f336a3e3c1e00c40cef164a332d8d2269a43bbd24a3c6d57c1ebff9c00386c24e0db9f072fe95a2a

  • C:\Users\Admin\AppData\Local\Temp\is-VG60Q.tmp\optprosetup.tmp

    Filesize

    1.1MB

    MD5

    ef7f8bae72830ceaf53ad9b8425534ca

    SHA1

    c863cf8a9bbbbc46b6b64ce184c999d06ce5ced8

    SHA256

    f4c0503beaa358e281b685c80ef4fe23b51c3dd5cbae4aa26da8c33d9f412766

    SHA512

    a657ccf1197710a427e7e434634ca613156856fe27e5cd39f336a3e3c1e00c40cef164a332d8d2269a43bbd24a3c6d57c1ebff9c00386c24e0db9f072fe95a2a

  • C:\Users\Admin\AppData\Local\Temp\optprosetup.exe

    Filesize

    3.8MB

    MD5

    37bfa3862c28a623f8eb0e9fa5999c11

    SHA1

    d89cf1b775c1f31b1981822187066d1360170a55

    SHA256

    8c9baf760abcb505713dfe97d6ae13f1aee565deeb55ae30bbb773167c5a799a

    SHA512

    c6fe6ace03713b6be3dd13898282fd5c0a8c9df11c8c6b57af1816524670ce3f34331f84e1a593558814f70bef72a0b0bce31a047a0ee3cf2758b2b4fc2aab6c

  • C:\Users\Admin\AppData\Local\Temp\optprosetup.exe

    Filesize

    3.8MB

    MD5

    37bfa3862c28a623f8eb0e9fa5999c11

    SHA1

    d89cf1b775c1f31b1981822187066d1360170a55

    SHA256

    8c9baf760abcb505713dfe97d6ae13f1aee565deeb55ae30bbb773167c5a799a

    SHA512

    c6fe6ace03713b6be3dd13898282fd5c0a8c9df11c8c6b57af1816524670ce3f34331f84e1a593558814f70bef72a0b0bce31a047a0ee3cf2758b2b4fc2aab6c

  • memory/2540-143-0x0000000000000000-mapping.dmp

  • memory/2708-135-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2708-139-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/2708-132-0x0000000000000000-mapping.dmp

  • memory/2708-146-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/3588-142-0x0000000003320000-0x000000000335C000-memory.dmp

    Filesize

    240KB

  • memory/3588-136-0x0000000000000000-mapping.dmp