Analysis

  • max time kernel
    78s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-06-2024 00:48

General

  • Target

    2024-06-03_bb92e667d1b0229521edd32616c644bd_cryptolocker.exe

  • Size

    87KB

  • MD5

    bb92e667d1b0229521edd32616c644bd

  • SHA1

    2cae2e0e524c9256aa2b0cf5aeacaea34c32afe3

  • SHA256

    20a873031246d55e4446d301610d46dd807c14a7b861ff54ee5490a2d7834035

  • SHA512

    0539a2b0f817af85afe936f289e5478166795666aef28374cf33da089b80f659899689efc9d5aa364167f1e5b3cb56905b4256fb48590560dc9ebd1a48ec41c6

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNBND:vCjsIOtEvwDpj5H9YvQd2R

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\2024-06-03_bb92e667d1b0229521edd32616c644bd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-03_bb92e667d1b0229521edd32616c644bd_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4048
    • 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:1820

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    87KB

    MD5

    6616b4d559b2f00154512e7f2a064d83

    SHA1

    e94e3b9ff41bfa412822016ef0c64fc5fb82ca90

    SHA256

    73950244ff8b64b3f46416d3f795442f828703eeb984c6684bc337e4bb81417f

    SHA512

    70e136d28d9ffb99c3986ee4c9211583c0e5ffe9a4fed262bc6f27f3f77f7f303cb8ff1d525f7f434d36692474396cae7b928ddb6bf4d55b1a39e1131635a8b1

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1820-17-0x00000000007E0000-0x00000000007E6000-memory.dmp

    Filesize

    24KB

  • memory/1820-23-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/4048-0-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/4048-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/4048-2-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB