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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    18/02/2024, 06:33

General

  • Target

    2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_cryptolocker.exe

  • Size

    47KB

  • MD5

    4514b240a2b56dc9f4be056d968bb3b5

  • SHA1

    66c70b813b214d26597b13078de6951f770aecae

  • SHA256

    830eb2cf0324cc27da428a82fb4a97dc1a919e1486995a66d61db7e359f23ca0

  • SHA512

    c4be838b122d13896d0a45af637ffef5c0534db8da809b654d965e478114975fe263c5a3903c28157b2c8ca7f8b4d7497b9f3b00642d44d7be26e2c2e1944a55

  • SSDEEP

    768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxV:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xk

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2876
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2928

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    27ac739263b8589d2b0b6452259de223

    SHA1

    9315379e9495aa39ddd3b03bdde3809c0ac5a24d

    SHA256

    ac7cbf2f010fc575a512c811f8b3ce77c6f7ea754da79d312fc4afccffcda74e

    SHA512

    5bd529347b965d0290e43e768c7e68a9ecb2a397c7495e627bed71b6e0c0660ec5c7d3aadd18411dff46df7ef681342753250bf41eae880e3731439d1625d882

  • memory/2876-0-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2876-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2876-8-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2928-16-0x0000000000230000-0x0000000000236000-memory.dmp

    Filesize

    24KB