Analysis

  • max time kernel
    149s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 21:25

General

  • Target

    2024-05-27_222652fcaefb01b206ee441deda1d067_cryptolocker.exe

  • Size

    40KB

  • MD5

    222652fcaefb01b206ee441deda1d067

  • SHA1

    e7bc47738704de219d0e6622b9d1efeb2c2eba08

  • SHA256

    d343832e46d112249d76aa440370531e1e6750f199edc361769e3df69527180e

  • SHA512

    7d2e9625563635e63a0c264732b5738d176bb69b697392460d1531c97f29883205603cb1a4d2bb5a4b6c080fcc86bced800c8238799a29bfb92ff9326f01b252

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDky:ZzFbxmLPWQMOtEvwDpjLeJAsKcF

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-05-27_222652fcaefb01b206ee441deda1d067_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_222652fcaefb01b206ee441deda1d067_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3860
    • 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:624

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    64c5a285dcb32b902173c2c18138b4b8

    SHA1

    4d7251e3b126998e2d2af1dd45e98c6f74ccfc8b

    SHA256

    33b70ff18669798e2c4359d9b9434b5987a910a2067586bb9af74cbb3bf6e36c

    SHA512

    dce97b475ece946ffb26fcbb23eefc971b681482e933f5d36b10928dc611d0ff208798fd084a48ce14d9664fc0ef0a196ac03a84ec36cca57e8feef967af3455

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/624-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/624-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3860-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/3860-1-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/3860-8-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/3860-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3860-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB