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Analysis

  • max time kernel
    119s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    26/01/2024, 02:22

General

  • Target

    2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe

  • Size

    56KB

  • MD5

    06c864b764d59b4b4f05d39fc7171b2e

  • SHA1

    74afbdf27f7108ed0ed136810a78dd708be237df

  • SHA256

    309151278f65310dfe4156c365285fc4b7dc34dcf712f76e761dccd8d59a1526

  • SHA512

    9ca00be67a3b6250968eda23aaf084aa27faecab261fa6c7c20e40ebb84f88d3c2e469b5b1b006011b33cdfb87d9ffc2df72f70b1f01d74d63193df6d37417fa

  • SSDEEP

    768:zQz7yVEhs9+syJP6ntOOtEvwDpjFeV0ZOfcpLzbO:zj+soPSMOtEvwDpj4yzbO

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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-26_06c864b764d59b4b4f05d39fc7171b2e_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2172
    • 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:2688

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab4C00.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar4C70.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

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

    Filesize

    56KB

    MD5

    78473c3606232bdb7ba29c1e75254d17

    SHA1

    b38153659d16b265bc60bd9b4cab200910abf04c

    SHA256

    dfba0deb925e32d254580af4f5bcfd106b5826ff49bf3b13f93e8e3afcc8a511

    SHA512

    9493cd0b0f97506f9eb69b3e9a9bf5e47542e83e1309fe97e28ba7adb593114102741464ceb5601c2b807fed80d3689fe87adb72ab990416c40eb620ad91773c

  • memory/2172-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2172-4-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2172-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2172-14-0x0000000001EF0000-0x0000000001F00000-memory.dmp

    Filesize

    64KB

  • memory/2172-2-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2172-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2172-93-0x0000000001EF0000-0x0000000001F00000-memory.dmp

    Filesize

    64KB

  • memory/2688-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2688-20-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB

  • memory/2688-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2688-92-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB