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Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    02/08/2023, 16:39

General

  • Target

    39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe

  • Size

    64KB

  • MD5

    39748e0438afc6561c3a3ab81c13f637

  • SHA1

    eda7568921f78e289b2f34df8a18b930fe6f1e1d

  • SHA256

    d65ffb5f3e5465b0cfb98d93a1d91e76299f1cceeacfb1e6234bddd4c28dc448

  • SHA512

    797d2a2208358f3220ba2ecb21d664ae1c692e8c89bf02ed10be30e4a2ccacbaccd590d7aa8d5ff6dd0772de7847a79d80f670c7bcef8f2cc9dfb15b613c5505

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTOOZs3O:T6a+rdOOtEvwDpjNr

Score
7/10
upx

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2468
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1816

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    64KB

    MD5

    e347073d1b089de2ce6351dcb83e7d69

    SHA1

    dd6e736fd92fd2c47466371e7bb43cda89b9b713

    SHA256

    802c50b067f59dd9faa6701724c629896ac9657c10657282fd6d40751df1fca6

    SHA512

    767e8174b8d5b087112a6c81fada549fae5196866fcecdb6f4dd88e65128db1c9dce3b419da653afddfd026ef1e1d150a440a210873fbb01f840bf18186e69b2

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

    Filesize

    64KB

    MD5

    e347073d1b089de2ce6351dcb83e7d69

    SHA1

    dd6e736fd92fd2c47466371e7bb43cda89b9b713

    SHA256

    802c50b067f59dd9faa6701724c629896ac9657c10657282fd6d40751df1fca6

    SHA512

    767e8174b8d5b087112a6c81fada549fae5196866fcecdb6f4dd88e65128db1c9dce3b419da653afddfd026ef1e1d150a440a210873fbb01f840bf18186e69b2

  • \Users\Admin\AppData\Local\Temp\asih.exe

    Filesize

    64KB

    MD5

    e347073d1b089de2ce6351dcb83e7d69

    SHA1

    dd6e736fd92fd2c47466371e7bb43cda89b9b713

    SHA256

    802c50b067f59dd9faa6701724c629896ac9657c10657282fd6d40751df1fca6

    SHA512

    767e8174b8d5b087112a6c81fada549fae5196866fcecdb6f4dd88e65128db1c9dce3b419da653afddfd026ef1e1d150a440a210873fbb01f840bf18186e69b2

  • memory/1816-82-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1816-74-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/1816-73-0x0000000000210000-0x0000000000216000-memory.dmp

    Filesize

    24KB

  • memory/1816-71-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2468-56-0x00000000002E0000-0x00000000002E6000-memory.dmp

    Filesize

    24KB

  • memory/2468-70-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2468-67-0x0000000000640000-0x0000000000650000-memory.dmp

    Filesize

    64KB

  • memory/2468-54-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2468-57-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/2468-81-0x0000000000640000-0x0000000000650000-memory.dmp

    Filesize

    64KB

  • memory/2468-55-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB