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
    25-09-2024 02:27

General

  • Target

    2024-09-25_a0af54cf1238a4979c4a45c9a6ba58b5_cryptolocker.exe

  • Size

    72KB

  • MD5

    a0af54cf1238a4979c4a45c9a6ba58b5

  • SHA1

    9b2045e77f977f755905d610a02bb81522518dd3

  • SHA256

    88c1154fc7a5af16c583611229e47a773236df4d2c3fdfc146d79b5443b7361e

  • SHA512

    c01b9ec70dc68bb827d6b74bf8c47f9705f8dd9d267f2da271fe2794df6884cd9bc2c353fd4b8e25c532a49c4ca868d50ea511949ba950ab4eaf0b1762ce5da7

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9O:C4Q2c94OtEvwDpj4H8zj

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\2024-09-25_a0af54cf1238a4979c4a45c9a6ba58b5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-25_a0af54cf1238a4979c4a45c9a6ba58b5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2876
    • 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:5000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    932bf8ceee807c2b76f4d3b899eaa825

    SHA1

    af03147f92fb5a93e2ae75c79d2a53d53c4cb2c9

    SHA256

    35811a6dcd817cc861da7146066742d080c5f66ae0f766e0b56298c153e568c1

    SHA512

    f89a92834be84a194b07ea98f7608ae6542caa7711d0c226cd60e63830a4c9524de0bca94387c6df09e41bfcd662cbdbd63268d1c890ce1b13702d9b1307cfe0

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2876-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2876-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/2876-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/2876-3-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/2876-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5000-19-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB

  • memory/5000-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/5000-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB