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Analysis

  • max time kernel
    91s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/10/2023, 18:43

General

  • Target

    NEAS.2023-09-05_295fca4e1e43eb635a7a543b158c2e99_cryptolocker_JC.exe

  • Size

    53KB

  • MD5

    295fca4e1e43eb635a7a543b158c2e99

  • SHA1

    5c3992e9abc5dd70da5417f962c16cfabc27d62f

  • SHA256

    b3c071938b68fadb07b64b0b96eb9b8fff3347139f25fb770a12f15c299be08e

  • SHA512

    ca214314fbc39bfb44bfb520b2d681b777c6ed59787ba71bf61ee863604f9bff02f9bf06e8baa1fc51b2e68b45726106eb60ec2e92d2a88e899f636fafb726e3

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Gok:xj+VGMOtEvwDpjubEgh

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-05_295fca4e1e43eb635a7a543b158c2e99_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-05_295fca4e1e43eb635a7a543b158c2e99_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4276
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2360

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    53KB

    MD5

    924a1b5fa5832d92e818740b2a00ce76

    SHA1

    c46a8c440f98f224589d877e98a2a08a31cc9e9e

    SHA256

    ab6dc96b0836b0f8b313b2a13a3e78c77c781c4cdc8c3067eb1b422525fc5b49

    SHA512

    b0d1d5fe47a70d92b1cf71d4e9fbadefd76cb7b55c995ef6a1099b8321b2374c204db32de6dfcda56cc6d3ad8229a38c0861e8410d24f32d41b62c4b0a563565

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

    Filesize

    53KB

    MD5

    924a1b5fa5832d92e818740b2a00ce76

    SHA1

    c46a8c440f98f224589d877e98a2a08a31cc9e9e

    SHA256

    ab6dc96b0836b0f8b313b2a13a3e78c77c781c4cdc8c3067eb1b422525fc5b49

    SHA512

    b0d1d5fe47a70d92b1cf71d4e9fbadefd76cb7b55c995ef6a1099b8321b2374c204db32de6dfcda56cc6d3ad8229a38c0861e8410d24f32d41b62c4b0a563565

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

    Filesize

    53KB

    MD5

    924a1b5fa5832d92e818740b2a00ce76

    SHA1

    c46a8c440f98f224589d877e98a2a08a31cc9e9e

    SHA256

    ab6dc96b0836b0f8b313b2a13a3e78c77c781c4cdc8c3067eb1b422525fc5b49

    SHA512

    b0d1d5fe47a70d92b1cf71d4e9fbadefd76cb7b55c995ef6a1099b8321b2374c204db32de6dfcda56cc6d3ad8229a38c0861e8410d24f32d41b62c4b0a563565

  • C:\Users\Admin\AppData\Local\Temp\misids.exe

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2360-19-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/2360-20-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/2360-46-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4276-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4276-1-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/4276-2-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/4276-3-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/4276-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB