Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-01-2024 07:46

General

  • Target

    2024-01-24_c42e9dd8dff21b121be1154a752a87d5_cryptolocker.exe

  • Size

    60KB

  • MD5

    c42e9dd8dff21b121be1154a752a87d5

  • SHA1

    a79d54c989fa0cadcb370ecb188b0e1383352e92

  • SHA256

    058fab59765393335f646f701c1ed8eee1b37085b69f0bdda99b44cc62f9e44b

  • SHA512

    c163f99ba3cf96c0a12cff752c982effd6fde2ed2da777ec8fe19e5cf285d25cdbc94ec6fa2978515a792e6fa219c03b81ef09eb4db65e2348fcf5da0b812689

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMP6:TCjsIOtEvwDpj5HE/OUHnSMJ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-24_c42e9dd8dff21b121be1154a752a87d5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_c42e9dd8dff21b121be1154a752a87d5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2132
    • 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:528

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    f6fa754258ccd12cd202987458648d34

    SHA1

    bd7660fcd2e5c0de20f1726c847850d2e6feb82b

    SHA256

    e812193675ed91bd72fa84e50d3956ac55dffe8e7b0803874daa40bdfc79d776

    SHA512

    a9839b87eec70cab0029c24ad3a331216de702cc556a7d361b09a6d81e047d1c8824e46d99b2f41f0d342341f5642eb7dfb4c7638ee27404dc32f42099ac0d6d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/528-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/528-20-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/528-22-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/528-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2132-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2132-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2132-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2132-3-0x0000000000810000-0x0000000000816000-memory.dmp

    Filesize

    24KB

  • memory/2132-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB