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Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/03/2024, 22:38

General

  • Target

    2024-03-28_9a16bb6e8468c7b7b1cd5c02ac7b1872_cryptolocker.exe

  • Size

    59KB

  • MD5

    9a16bb6e8468c7b7b1cd5c02ac7b1872

  • SHA1

    f0cbd50440b5fa03c58ef547b1df31cd06e424b3

  • SHA256

    16dce3d765cf4b65cbe9fc6ba05b96b109983b56f7efdab137424989f940fc10

  • SHA512

    37b5c45a2d78d5e6d3dfcae90fe2e1247cb136a18860daca9e2569e1479a68b33675d5aee59b4dec234ef836013f613b5fe0c65f563925aad0a98d1166310f34

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8lB4dCOBy/cMFqeoYPO+lxUzh:ZzFbxmLPWQMOtEvwDpj38lD/cMAT+lch

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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).

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-28_9a16bb6e8468c7b7b1cd5c02ac7b1872_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-28_9a16bb6e8468c7b7b1cd5c02ac7b1872_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2512
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:1680

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\Local\Temp\Tar23AE.tmp

    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

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

    Filesize

    59KB

    MD5

    9485f6bf6f29362c5f98f672bddb6d76

    SHA1

    4399b3a7c57810240579e315f8fbb4d33fa342a9

    SHA256

    fbe99affc8424df497cb64891734168d4e0235e92790739aad5016347455a2a5

    SHA512

    f5f93a2e2343684d22ba1c5323488a5ed003e7dcf3b424790012a1c6b508e9a43b8c53d3aff82bfce179923d25aceac79476c7d72055be444e5208facc3e42c5

  • memory/1680-15-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/1680-22-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2512-0-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2512-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2512-3-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB