Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-01-2024 04:42

General

  • Target

    2024-01-29_b4d14620986d630461c64baec6f3406d_cryptolocker.exe

  • Size

    45KB

  • MD5

    b4d14620986d630461c64baec6f3406d

  • SHA1

    46d0b7bb9b33db4bde8552751c4c5fcea7127725

  • SHA256

    df210f8284a2f7d460c1c5f396b38eb4b8200b1271d3b74a7b072cea8f546974

  • SHA512

    af3e6958c66de788b69399a0e74cceeb952f91de1abbc79a911d5e0f91debfe085675a75bf29193e1be82aba4c64c87751a044a676af0a472861307c6c030bef

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556yPR/W:X6QFElP6n+gJQMOtEvwDpjB0GIWvPRe

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-01-29_b4d14620986d630461c64baec6f3406d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-29_b4d14620986d630461c64baec6f3406d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2556
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3280

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    45KB

    MD5

    52bd3270638356d548855919fc470a51

    SHA1

    fdc3b6369c0d227d984c9752d46a01f0ce3c5c01

    SHA256

    e5a7ea415b075bd28e36da4fc21a99c3f795b962d941b8124d52a347b55aa5d2

    SHA512

    a8b121dfc4ed74ca3a1dabac9b5a8a4008efbfc3b588b837b222052be99a64bcd95d89a056e61e95fa54e3a38d420b127ccd7b30450611facf405680edaf00c8

  • memory/2556-0-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/2556-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/2556-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/3280-18-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3280-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB