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, 04:30

General

  • Target

    2024-09-19_93e3b65aa14cc60a5ec91b8db4cbd6fa_cryptolocker.exe

  • Size

    73KB

  • MD5

    93e3b65aa14cc60a5ec91b8db4cbd6fa

  • SHA1

    fdba5f2ccfb57297e887b6b3a15b21da05fa6eeb

  • SHA256

    acbd49be418753704ef8f15300a8579959d3c6a7ccaf5c90d7207041f3a31e70

  • SHA512

    ffba4ecb4afdcfbca8e1d536c74c1950f2e3628748b6ad56ede2acfb1a3bb60e62347f519caf48fa1f0062330f4bdc73676232ddde79c75e77f913aeacc1c646

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9Lo:C4Q2c94OtEvwDpj4H8zF

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_93e3b65aa14cc60a5ec91b8db4cbd6fa_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-19_93e3b65aa14cc60a5ec91b8db4cbd6fa_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5084
    • 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:3840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    73KB

    MD5

    760e5cd07bd2be8de3ac4ccb68d3eadc

    SHA1

    68a02d75c7bd523e19bd2ea88edcb57b57deb736

    SHA256

    4c310ebc6f2ea29064350af5be659bf34b5d8325be84ad64b1befecf66487e2a

    SHA512

    e158b3a786f45a25e77a4f7869cc2e6beafbadf1ebe10d02f6467d1e474f14c9427f1596a4cc09a39c4069dd31440f2e25e2f2bcc49495224317a2ad13d4180b

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3840-20-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/3840-21-0x0000000002040000-0x0000000002046000-memory.dmp

    Filesize

    24KB

  • memory/3840-52-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5084-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5084-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/5084-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/5084-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/5084-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB