Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 21:45

General

  • Target

    2024-05-22_96b46d78909e27c340fa78bafe622949_cryptolocker.exe

  • Size

    48KB

  • MD5

    96b46d78909e27c340fa78bafe622949

  • SHA1

    9ee12c13b1d11850ec5a35af98a22d5e337e2de4

  • SHA256

    fe151a4f1418a0b79eaa175502148543c636e318fb16f6ec17cded2547db3bea

  • SHA512

    4ae74333432fc17da81c7d9c6590d6436989d8e54a91bc089312eadb794611977cf784bd38ed8d9c713e7e039b17ef0dd76dc80be925efa8e87d1d6f96bc0fca

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0nkM:vj+jsMQMOtEvwDpj5HczerLO04BE

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • 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\2024-05-22_96b46d78909e27c340fa78bafe622949_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_96b46d78909e27c340fa78bafe622949_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4780
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:3992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    2aec9e4f26e158cdf5e3774529d6450c

    SHA1

    846cfb22e582e73b1d0270a3e9acbd7a9d1248fa

    SHA256

    fd2ab39f8ddf1233ee9bddeb181dbc18fd5f76e0f17ca0788f5db2cb99bc647e

    SHA512

    da27eb78a171f4d9b7cbe69a44ef15d887aa44c016e72c7f71bfda4033c5312e3bd19f23cbf74bec3fe305734bee06e97beddcea37011436b4314ff70487c1f2

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3992-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/3992-23-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4780-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4780-1-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/4780-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB