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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    24/04/2024, 05:47

General

  • Target

    2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe

  • Size

    62KB

  • MD5

    a29b4e73afa09890850d2cb52346e29a

  • SHA1

    f35216fd12e496b5f62fecb5c6e90530acaf43c7

  • SHA256

    69e55199015bbab8bfc5b3e496526fff6dc05767d8dbad88dafc784ee437444a

  • SHA512

    8d1709bca370629755b654eea0a0f83b39d2975a88c43729fd62508364e163f655b9bb495a0ef679650e46803a2d4a7915c8c30f69b1fedd5a5434c8bf809e78

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsiZ:BbdDmjr+OtEvwDpjM8Y

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 5 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 WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2968
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2120

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    f2cb432c5c1b7230d82d1de7e8194381

    SHA1

    9fd554f35512ce6fe2bb965675c16ec3e5f5f57a

    SHA256

    7e5f53d139e855717b967f482f09b88e465f6ed1dddeceeb1090c87fd16bb39e

    SHA512

    0fb21fb984d9f917a656b138464ed39866d3c5f3ddff366bcb84735d1215c78a081737b1287a71579d0cca97e52603fadc35ae8b41921520a456876740a35a7e

  • memory/2120-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2120-19-0x0000000000310000-0x0000000000316000-memory.dmp

    Filesize

    24KB

  • memory/2120-21-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2120-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2968-1-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2968-0-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2968-2-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2968-3-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2968-14-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2968-16-0x0000000000670000-0x0000000000680000-memory.dmp

    Filesize

    64KB