Analysis

  • max time kernel
    94s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-09-2024 22:22

General

  • Target

    2024-09-07_c9244df6fd81b53490a5f0ae100f2368_cryptolocker.exe

  • Size

    94KB

  • MD5

    c9244df6fd81b53490a5f0ae100f2368

  • SHA1

    a7ea31937c589979a4b7ee02cbfe9e404cb432c6

  • SHA256

    578ffb51f3f8f62fa67769605914b23554e2a88383449101060bf77d5dee2ea8

  • SHA512

    c3a92ee0b8070440ea1a5e865e32b751c47edb7a965b38faaad75a8aedd1dde2ca368ab7154fa8d98f3e289ff251a8abe16ed0fdbf53d79030b7aa7c7a48d7ae

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/ku:zCsanOtEvwDpjB5

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\2024-09-07_c9244df6fd81b53490a5f0ae100f2368_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-07_c9244df6fd81b53490a5f0ae100f2368_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2204
    • 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:4544

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    95KB

    MD5

    6803ea0d8177ed5075004399a8bcf30d

    SHA1

    7582e3823db5168c646ab13e2b14d3c522a1d01b

    SHA256

    8bb873cf18cc5c07ab884c822f17cd6fe9bf4e05777e65d6e7ca73624eb019d4

    SHA512

    2f105694b7925b1ed3a3934167b79f6b0f55985845cedc165b10ac50b66d1e6d9781bb4960c7c4f98c9d202f9bb3afd6666098c1c554285509a9e8046d3409e8

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2204-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2204-1-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/2204-2-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/2204-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2204-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4544-19-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/4544-25-0x0000000000490000-0x0000000000496000-memory.dmp

    Filesize

    24KB

  • memory/4544-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB