Analysis

  • max time kernel
    175s
  • max time network
    176s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-10-2023 10:58

General

  • Target

    2023-08-26_981b6b1905150c8ab499851e80016c4f_cryptolocker_JC.exe

  • Size

    52KB

  • MD5

    981b6b1905150c8ab499851e80016c4f

  • SHA1

    bad673324050563e2bb0f871a4dec4a0d2128e18

  • SHA256

    beece8d337b7ff3759e7d0cce126ea949cb9bcd8f997021c35ac9383629c58d8

  • SHA512

    ed1201463193fc6538ad79ceff759917219613a10595424b67c284302d6c845cfff8d34c053c80fa67a91b7f11b7267e24462e4e01b5ca3ab9255c813cf60dde

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7Go1:xj+VGMOtEvwDpjubEgY

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2023-08-26_981b6b1905150c8ab499851e80016c4f_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-08-26_981b6b1905150c8ab499851e80016c4f_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4580
    • 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:1640

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    52KB

    MD5

    4005c1d535f6f6599498475b00b694e8

    SHA1

    58bdfd989c12c678bc3bc16def32a57692d99a36

    SHA256

    b6115c338e05160eaa24f471cac8274e8115e9f5dd4c56851f428658cee6aea8

    SHA512

    9a93ea0a3f3d2c555fc0e0ad004ea932d662a85356beb0cb32941acff8f543f8ac6f1f765252bffec02d708fcc9df2dc11818fb40c3230acc2bd38e4487dbced

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

    Filesize

    52KB

    MD5

    4005c1d535f6f6599498475b00b694e8

    SHA1

    58bdfd989c12c678bc3bc16def32a57692d99a36

    SHA256

    b6115c338e05160eaa24f471cac8274e8115e9f5dd4c56851f428658cee6aea8

    SHA512

    9a93ea0a3f3d2c555fc0e0ad004ea932d662a85356beb0cb32941acff8f543f8ac6f1f765252bffec02d708fcc9df2dc11818fb40c3230acc2bd38e4487dbced

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

    Filesize

    52KB

    MD5

    4005c1d535f6f6599498475b00b694e8

    SHA1

    58bdfd989c12c678bc3bc16def32a57692d99a36

    SHA256

    b6115c338e05160eaa24f471cac8274e8115e9f5dd4c56851f428658cee6aea8

    SHA512

    9a93ea0a3f3d2c555fc0e0ad004ea932d662a85356beb0cb32941acff8f543f8ac6f1f765252bffec02d708fcc9df2dc11818fb40c3230acc2bd38e4487dbced

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1640-19-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/1640-20-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/1640-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4580-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4580-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4580-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4580-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4580-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB