Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    13/06/2024, 04:32

General

  • Target

    2024-06-13_a3824cc5670519b520e1f3ae158f7220_cryptolocker.exe

  • Size

    68KB

  • MD5

    a3824cc5670519b520e1f3ae158f7220

  • SHA1

    5be0959f3baea93c2d44a11df27ab9e656e00872

  • SHA256

    969b2c0a8d028745803ff0877cd9c6875464f63ddd5e20dc32414fe9e2bf4e86

  • SHA512

    a39c008945de31a894db8cbec10f0cf56411a596bc7e48a6af6fcea8665460208962d3ce53d319faaae5abb28ce118c18bd3e3f24a503be426b84c9b3d0b2602

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoQRo:1nK6a+qdOOtEvwDpjN

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 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\2024-06-13_a3824cc5670519b520e1f3ae158f7220_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_a3824cc5670519b520e1f3ae158f7220_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2856
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2952

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    68KB

    MD5

    b4ef927520d9c8300a7b5f49eec67e98

    SHA1

    3b34bd0215da74b9f075d5d3e77a30d0ce59f384

    SHA256

    58891ff109c8b54187a0ecc728bb123fc48077c80fc92f7555fbad3ed8471d41

    SHA512

    8ab9bee2b18a416261117052eda8ccccd69a37107a8ccff1005da30a3eaab24aeef54cc5a5cf5383749a41c00b9eda05b397bc7542232cc37de78959a455d53d

  • memory/2856-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2856-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/2856-2-0x0000000000370000-0x0000000000376000-memory.dmp

    Filesize

    24KB

  • memory/2856-9-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/2856-15-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2952-17-0x0000000000480000-0x0000000000486000-memory.dmp

    Filesize

    24KB

  • memory/2952-24-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2952-25-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB