Analysis

  • max time kernel
    96s
  • max time network
    139s
  • 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 01:03

General

  • Target

    2024-09-07_02b3931458a47486fa264120677db3d0_cryptolocker.exe

  • Size

    72KB

  • MD5

    02b3931458a47486fa264120677db3d0

  • SHA1

    495723f3ab42240a5c6e646d3bde17b902de8b33

  • SHA256

    4fa494a3f2eea1eeb628d311a5e472e04e93921cc394a7d4e5788190b19757d6

  • SHA512

    149ffea4c698536acfa381d084e8b2626cca5c6cf2da0705d5a8929f868c71ffc52178104e152d6a05e30d56828a349ba164242c95d4f0dcadcde2b7cb5bcd9e

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs95J:C4Q2c94OtEvwDpj4H8zi

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_02b3931458a47486fa264120677db3d0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-07_02b3931458a47486fa264120677db3d0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4088
    • 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:4160

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    0bfea1ecaf32c56783f02690cb5850d9

    SHA1

    9e635b622f4b56532ba06a03474d4a1da2e11f46

    SHA256

    d3af7162d27406b1a08da67d0492222bbcd71b607625116b9470e8d58d03aae5

    SHA512

    9f69c5f03ceda959dfe5230b5d15d63df2be52860b7a3cad9aedc986d2c653ffa46076b7f2c5d192162b9f19fd1ba4f6aaee1660475beb905c367483ffa8ba62

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4088-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4088-1-0x0000000002140000-0x0000000002146000-memory.dmp

    Filesize

    24KB

  • memory/4088-2-0x0000000002140000-0x0000000002146000-memory.dmp

    Filesize

    24KB

  • memory/4088-3-0x0000000002040000-0x0000000002046000-memory.dmp

    Filesize

    24KB

  • memory/4088-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4160-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4160-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4160-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB