Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2024, 11:32

General

  • Target

    2024-01-25_af1e7bdf89dadc65caeebe5143502b94_cryptolocker.exe

  • Size

    46KB

  • MD5

    af1e7bdf89dadc65caeebe5143502b94

  • SHA1

    61afb8de3b61675ea9cb97106739a39a1b5f4269

  • SHA256

    e15d1764d657b46662117c84bcd4ca46e7041819e8d53f74223d11f1bbae52b2

  • SHA512

    ee61c24ec4757ad251b4ba1c6cf96a50767cbd90b27628b1720ea85541dcea3376142071c8a453ee63ef5e88e29646cbe42b8cf340c09d7536da555152d4c45d

  • SSDEEP

    768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YbDu5z/hS4:bgGYcA/53GAA6y37nbS4

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-01-25_af1e7bdf89dadc65caeebe5143502b94_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_af1e7bdf89dadc65caeebe5143502b94_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1956
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:4884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    46KB

    MD5

    e29ac235d525625c55687e2da531fc41

    SHA1

    c35cbe36da14a350ee99591dcfbf88f8e0d8b499

    SHA256

    097468e8acab29fa31e81b1ee642d7dbc3cc1f6003b8f619b01d5e6faf7a3ae7

    SHA512

    a9cd03b82ec5c5e15152b68bb92aa2062dcd83646afda93e9462d5fbd6fd5bfd319095ff2a52a5d24490bd9188fbb25bb16eb2d20722566f2c4354aacb53021c

  • memory/1956-0-0x0000000002260000-0x0000000002266000-memory.dmp

    Filesize

    24KB

  • memory/1956-1-0x0000000002260000-0x0000000002266000-memory.dmp

    Filesize

    24KB

  • memory/1956-2-0x0000000002290000-0x0000000002296000-memory.dmp

    Filesize

    24KB

  • memory/4884-17-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB

  • memory/4884-18-0x0000000002180000-0x0000000002186000-memory.dmp

    Filesize

    24KB