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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/02/2024, 19:30

General

  • Target

    2024-02-24_42f5c7a35d6765a3fa93e0d215249c21_cryptolocker.exe

  • Size

    45KB

  • MD5

    42f5c7a35d6765a3fa93e0d215249c21

  • SHA1

    440fd2abc7c4e3bbd2072f66af6c03a141526799

  • SHA256

    5981156cb99a0d0209a84bb51721a0389ece2a59fb264dc9ca6c604782cadfce

  • SHA512

    2c432e071d128cc819fd71d1ea9d0f744a694266e659faa670948aa6b1e92895e16e48c9d5c30030ec8cab6dbb5ab9f5e0b67d8231c56d0aaf1fde5c4c3f1ab5

  • SSDEEP

    768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+My1j5B:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+9

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 3 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-02-24_42f5c7a35d6765a3fa93e0d215249c21_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-24_42f5c7a35d6765a3fa93e0d215249c21_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1644
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3536

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    46KB

    MD5

    a1905a3f386322bf5573c3621ddd7e37

    SHA1

    d6fa9205e2b081ad251ea53bfad535fb4aa3f93a

    SHA256

    3e28c1e5083b091b7d2b7cec0463ac5fa6deba753296fd774c40a5dcef1150a7

    SHA512

    5a4844dfb6e8439dc212693cae8f492022bfeeb9dcfaefe53be6b5645b97067967ed94f9f1ff0716ce2112d4aba8052635b26386f1a638c875d8ae83a5678609

  • memory/1644-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/1644-1-0x0000000000690000-0x0000000000696000-memory.dmp

    Filesize

    24KB

  • memory/1644-2-0x0000000000690000-0x0000000000696000-memory.dmp

    Filesize

    24KB

  • memory/1644-3-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1644-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/3536-20-0x0000000002040000-0x0000000002046000-memory.dmp

    Filesize

    24KB

  • memory/3536-19-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB