Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 08:38

General

  • Target

    2024-02-13_8212a5c98b15f6136ba59ddd08364a6d_cryptolocker.exe

  • Size

    41KB

  • MD5

    8212a5c98b15f6136ba59ddd08364a6d

  • SHA1

    57195e62329afd5fe95ff64fe977abd8d3a78883

  • SHA256

    82244a14852940f9a1e23ee8b4313f2d9e2bcc03736a014a2e28caac4885f408

  • SHA512

    6785446a0c6dcbfa2ffcc98381a09debc8461e978f6ed9e90f27f8dfe7dbbbdad1e73657aa851df852384bb36cac106050b8c3f352073482807b83a99100b63c

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4tKM3Az5mRRrc:vj+jsMQMOtEvwDpj5Ht13A4Rtc

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\2024-02-13_8212a5c98b15f6136ba59ddd08364a6d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-13_8212a5c98b15f6136ba59ddd08364a6d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3948
    • 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:5020

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    41KB

    MD5

    bacd5470d3a60b3714ba6ee29be768cb

    SHA1

    58fe464a9fbc87cd8e56924c6fc063e8edcd58e0

    SHA256

    d666341e7454650c102f010886ae20c7e7be429f192bbb74d06fcf3b1a13dcb5

    SHA512

    211bf051988bb8304544a1684a805491bebf799c1e7f64af0110fa0070aa7b10b923803b05f3ab9a4893afbcbc3bba2f8ebfea06fbc4f1f2c1269bff4cb24f2e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3948-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3948-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3948-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/5020-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/5020-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB