Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-01-2024 08:27

General

  • Target

    2024-01-27_460c70dad7a2b0ab44e37f5c947f6614_cryptolocker.exe

  • Size

    58KB

  • MD5

    460c70dad7a2b0ab44e37f5c947f6614

  • SHA1

    85e7ca3c7a2d06fb079f0b434dedac67c74b9967

  • SHA256

    5977383a26eaefa6c0e54ef5f44f3e442a48e8423c3aa8fa85c536e30bd24f07

  • SHA512

    ee43b526b8a90f8d9f5e9ebd294fab5eeee2369b682fe53790200c24facd8eb457b7a343220d6708af7850146d0fa48ccff9f7fd33f84161ab5c1c5c3d260e8c

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMY8:TCjsIOtEvwDpj5HE/OUHnSMs

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-27_460c70dad7a2b0ab44e37f5c947f6614_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-27_460c70dad7a2b0ab44e37f5c947f6614_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4432
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4116

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    58KB

    MD5

    b928f6e5a5e4bbde5e6c4b6d61b8446e

    SHA1

    58ea48b154f2b30bf6e49b9d1a5fbd568b1b5035

    SHA256

    fb0beb0b7b317a144d5a9f239a6883b2a9c6142c80e3ad70addaae65f4fef266

    SHA512

    a749a5b7a24ce00cd0558ada6efb9c2874a560b6dae9c59e03d2fb447a02be4f97c8661b9394cb7176dd7f6cb869cf2758c544bddbac379e3b2195f547a5534f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4116-19-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/4116-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4116-48-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4432-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4432-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4432-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4432-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4432-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB