Analysis

  • max time kernel
    134s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 21:13

General

  • Target

    2024-05-22_eb04b3737d82433c25b3db12e40b8c29_cryptolocker.exe

  • Size

    62KB

  • MD5

    eb04b3737d82433c25b3db12e40b8c29

  • SHA1

    93fea478f5ecd5592f9b0542369bbc9a36e0dcac

  • SHA256

    1e0803b403668ace30aa044ea878b5d88265c46203e276b44bcaee01a4173cac

  • SHA512

    a696ada85773168178f3c9c63eb003e8d153b134bf288fd6e30667d9505d1f2bd3792df5939942503eec625645267485baf4bd5d3d40139ad5008533aa5301d7

  • SSDEEP

    768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XG99:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWBu

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\2024-05-22_eb04b3737d82433c25b3db12e40b8c29_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_eb04b3737d82433c25b3db12e40b8c29_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2208
    • 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:2528

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    5cfc140ccdabeaa4a53f9bcdf20ace48

    SHA1

    599a72a6abf4ad406f2deae2a5ee29c00fb80548

    SHA256

    439f7c79b944ce2ed35846376a77fcc88df9c4d3dac2fad2f529d7679d75928d

    SHA512

    360085d1bb2400c6820bb389ed0f658c3d96f3a53bd0b0e2497ef08dd3be7ac87692d63be8d3ef8e09ff9fbe1da110ad1c53de6fb43ec4fc3e395e5f007370b9

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2208-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2208-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2208-2-0x0000000001F70000-0x0000000001F76000-memory.dmp

    Filesize

    24KB

  • memory/2208-9-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2208-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2528-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2528-47-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB