Analysis

  • max time kernel
    94s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2024, 04:31

General

  • Target

    2024-09-19_a4d4f91c59aa9967b94bf12bf801b6e6_cryptolocker.exe

  • Size

    73KB

  • MD5

    a4d4f91c59aa9967b94bf12bf801b6e6

  • SHA1

    abaa1b82f29fefe650dba575f25c106c75d729eb

  • SHA256

    7cd0aa56464bac978c521ba11245addb33c8216e94b972748b6a42dd0a64b52c

  • SHA512

    efe6aae7054784c6fd8d04ddc833ecd985d216696f691c7b979c09b30668c4ab9b7e59c71bf31b34c9affa98cf3ab8fe182daaeec0f1f72a8a587094e24ca7fa

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9Lv:C4Q2c94OtEvwDpj4H8z+

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
  • UPX packed file 4 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-19_a4d4f91c59aa9967b94bf12bf801b6e6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-19_a4d4f91c59aa9967b94bf12bf801b6e6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4516
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:4920

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    73KB

    MD5

    46290b86d95e55460cc8e6ac8e9c54d2

    SHA1

    0c0c0723bfbada2961608247b1136a2dde4fab21

    SHA256

    0636b513bb0937258fb59d218d95e7d277088a4e6122655e7c3014bf70d57640

    SHA512

    6c5052f6adc8ce70f0660934155600e3eef1db70d1a2118d4e0858ed7ea79636d22bbb4c6c7aac2e50d6dc0b3e195c0d6c8cdaf134d1f33ed1ec04926b63736e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4516-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4516-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4516-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4516-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/4516-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4920-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4920-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4920-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB