Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 13:00

General

  • Target

    2024-03-05_e0d8032af54853365d313e663da2f535_cryptolocker.exe

  • Size

    62KB

  • MD5

    e0d8032af54853365d313e663da2f535

  • SHA1

    212ffc41819f74733e926b64ffa1a9f408079039

  • SHA256

    e386ed3f3fae274f21390ecfc379932a7d9df072bc39d0cd6ea63995e3181ac6

  • SHA512

    c14108214f4661ba579128ed3a774d563f3c20b14ca16de733b03147c35b57fa6a29985c36644d541c7701f88457ec18fac967314a7fb3146716a978492d0485

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPvdm:TCjsIOtEvwDpj5HE/OUHnSMYz

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-05_e0d8032af54853365d313e663da2f535_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-05_e0d8032af54853365d313e663da2f535_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1904
    • 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:4580

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    62KB

    MD5

    6c2d32ea637989cc3bb5a4e439f1b7fd

    SHA1

    733c8599ee93ac3d8385b871adc6bf3ee7f35519

    SHA256

    a90b7dabadb5b01d8533ff1ff29111a640600b6cf9ab650df97ef7b92fecb445

    SHA512

    e304806cf5b0deefd5799d588c50bfb28d266cfe25723bcad98e46ba093bc4897128e0164a44a215c1268946a9aa00ca85ec1db4274f6e98a8facfca935d80ef

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1904-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1904-1-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/1904-2-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/1904-3-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

    Filesize

    24KB

  • memory/1904-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4580-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4580-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/4580-22-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4580-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB