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Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/10/2023, 19:44

General

  • Target

    NEAS.2023-09-06_e9c5b1014bb7cba414f89aa675be7bd3_cryptolocker_JC.exe

  • Size

    36KB

  • MD5

    e9c5b1014bb7cba414f89aa675be7bd3

  • SHA1

    8024ff408520bd7ae5c235b369b59d5a8a0abf16

  • SHA256

    a526e7f011f1c8662af15383f43b5f5c48a26bb3981fcd964e03eab838949e9f

  • SHA512

    7bcef00ed86f1140f0d4ef8e47b916adaf096686c714b0fb5364f47a42b5a634c7bcd246128dea2056d463a03ead5f8b59f519895408bec5cce018f79e3c1004

  • SSDEEP

    768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpNEmNOmnQBDna:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X7

Score
7/10

Malware Config

Signatures

  • 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-06_e9c5b1014bb7cba414f89aa675be7bd3_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-06_e9c5b1014bb7cba414f89aa675be7bd3_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:964
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:4856

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    36KB

    MD5

    99a26c94dfd44f36ff3ec72f2b9645f5

    SHA1

    da0e60095b9df13c1479803cf54d3f170966703c

    SHA256

    27ccb82ae585a5eb828698189240846fe5f89d5063b646d562bd7a96fd2949a3

    SHA512

    c3767762dcccfaccbd8bd2ac5ef3e518b6ffdca6f3bb3ba4dd6e23328c2572a31732e7c95c2506bf580496c0cf506a872f1128bfee485ae074ac9904b700337c

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

    Filesize

    36KB

    MD5

    99a26c94dfd44f36ff3ec72f2b9645f5

    SHA1

    da0e60095b9df13c1479803cf54d3f170966703c

    SHA256

    27ccb82ae585a5eb828698189240846fe5f89d5063b646d562bd7a96fd2949a3

    SHA512

    c3767762dcccfaccbd8bd2ac5ef3e518b6ffdca6f3bb3ba4dd6e23328c2572a31732e7c95c2506bf580496c0cf506a872f1128bfee485ae074ac9904b700337c

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

    Filesize

    36KB

    MD5

    99a26c94dfd44f36ff3ec72f2b9645f5

    SHA1

    da0e60095b9df13c1479803cf54d3f170966703c

    SHA256

    27ccb82ae585a5eb828698189240846fe5f89d5063b646d562bd7a96fd2949a3

    SHA512

    c3767762dcccfaccbd8bd2ac5ef3e518b6ffdca6f3bb3ba4dd6e23328c2572a31732e7c95c2506bf580496c0cf506a872f1128bfee485ae074ac9904b700337c

  • memory/964-0-0x0000000002200000-0x0000000002206000-memory.dmp

    Filesize

    24KB

  • memory/964-1-0x0000000002200000-0x0000000002206000-memory.dmp

    Filesize

    24KB

  • memory/964-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/4856-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB