Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-05-2024 04:49

General

  • Target

    2024-05-12_ef612b0b815b1ca4ec7e5bb913ad5628_cryptolocker.exe

  • Size

    41KB

  • MD5

    ef612b0b815b1ca4ec7e5bb913ad5628

  • SHA1

    9b2a13f3302a32dad7a2591f60eb36381740c742

  • SHA256

    ae432461c5f0ec0dd6c0b6ea377db17e8b76cde2f3562821141581254a2e1095

  • SHA512

    0cb9a37e544060080c6790c9d603c65a749bfc3aa786e3ad29c9180afe0d32065f656732220a7954df46bab7ae0dc2f29f84e4187791bf2e54ccfb582dfaac8d

  • SSDEEP

    768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL7vFG:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLE

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Checks computer location settings 2 TTPs 1 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\2024-05-12_ef612b0b815b1ca4ec7e5bb913ad5628_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_ef612b0b815b1ca4ec7e5bb913ad5628_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1404
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1580

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    d400b815dfa01733e6662963f89b49a5

    SHA1

    b0de8ca4ac8d1199cd8c37ef249192890181019e

    SHA256

    195ae7a8ff96bf5b802639a3855db68adb8b08738f1336fd75093b1f23858719

    SHA512

    51313bae21e66d48bb1e8f6f2cdaa463150b9e3e56b9d5a686d2b368ba2c3db2721abdba969e94a68ba4c31cab413b25ad00335bb85c941d339e6ddb5006b55f

  • memory/1404-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/1404-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1404-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1404-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/1404-18-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/1580-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/1580-20-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/1580-21-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB