Analysis

  • max time kernel
    123s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/08/2023, 15:55

General

  • Target

    4a3d8405399afe7c1b5983c35333ae7a_cryptolocker_JC.exe

  • Size

    36KB

  • MD5

    4a3d8405399afe7c1b5983c35333ae7a

  • SHA1

    be96c87b982753ea54b68712fa21dc557eec9868

  • SHA256

    022aec37da8dd4e42f3f9c02b3638517bb717daa6bf0fc2fa8d993380fccd21b

  • SHA512

    a45861bfe560df6d85943f3e9c86f9cb1d85797d67768d056d4940db1552ab48cc2a372143d409c3b2112b780e6d322f613a799569cbdffb4449383701b4de3c

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHgS6BLP1V7UELrpv:XS5nQJ24LR1bytOOtEvwDpj66BLtldv

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4a3d8405399afe7c1b5983c35333ae7a_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\4a3d8405399afe7c1b5983c35333ae7a_cryptolocker_JC.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3020
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:3428

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    36KB

    MD5

    c60f362828d89bd2c5aae7a92644cece

    SHA1

    5b8f18656e8757e732504cbb92d33918605f0ebf

    SHA256

    dd8e0b48478199851afcdafbecce21984e35e67e1d2a4c09fb48fc98834b0b3f

    SHA512

    16e66d9cb55115b970a3ebff8d286923b09c080910ced5d5ad93a50503d9e5bad82386a9575f32a50d0252622849faa2c89b844e05f8a9667f6cdf181a67c670

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

    Filesize

    36KB

    MD5

    c60f362828d89bd2c5aae7a92644cece

    SHA1

    5b8f18656e8757e732504cbb92d33918605f0ebf

    SHA256

    dd8e0b48478199851afcdafbecce21984e35e67e1d2a4c09fb48fc98834b0b3f

    SHA512

    16e66d9cb55115b970a3ebff8d286923b09c080910ced5d5ad93a50503d9e5bad82386a9575f32a50d0252622849faa2c89b844e05f8a9667f6cdf181a67c670

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

    Filesize

    36KB

    MD5

    c60f362828d89bd2c5aae7a92644cece

    SHA1

    5b8f18656e8757e732504cbb92d33918605f0ebf

    SHA256

    dd8e0b48478199851afcdafbecce21984e35e67e1d2a4c09fb48fc98834b0b3f

    SHA512

    16e66d9cb55115b970a3ebff8d286923b09c080910ced5d5ad93a50503d9e5bad82386a9575f32a50d0252622849faa2c89b844e05f8a9667f6cdf181a67c670

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3020-133-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3020-134-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/3020-135-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/3020-136-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/3020-158-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3428-151-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3428-152-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3428-181-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB