Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25-01-2024 17:37

General

  • Target

    2024-01-25_c63278ccf6007fe8d6613a54e79a6763_cryptolocker.exe

  • Size

    127KB

  • MD5

    c63278ccf6007fe8d6613a54e79a6763

  • SHA1

    33767068f2d591f7ef68a481027d35a7014c20a0

  • SHA256

    c91f106a83fc6875e31848d47571d93c8a9a16bb6199070a3da7fb46b5fcac35

  • SHA512

    a94bb7b6236bcdf22a972c018896a9bbf38995d097af49754633ba3c79405e747fcacdc3fbb028fb6bd1bf785aad416d392736fa0d5eec324f7dfdea80e23bcc

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1e8:AnBdOOtEvwDpj6zy

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-25_c63278ccf6007fe8d6613a54e79a6763_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_c63278ccf6007fe8d6613a54e79a6763_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2500
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2304

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    127KB

    MD5

    86b4e7101c7bebbb49fa94a21bbeb153

    SHA1

    487ac84022331facf81b4146c7c9d712a4378edc

    SHA256

    136bed78ce6d6c58354738b4d6a9d526d45c189b7ce78db464fa4fd43f53e324

    SHA512

    5587158d9c3829c4e394a65734e01ee1121151c61a7dee4e136457a3740e9294b7d19c8ddba34d67f59f1a020e840e885f3f9fe9a6f049142d236993385b392a

  • memory/2304-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2304-18-0x00000000002D0000-0x00000000002D6000-memory.dmp

    Filesize

    24KB

  • memory/2304-19-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/2304-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2500-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2500-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2500-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/2500-4-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2500-14-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB