Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/05/2024, 08:29

General

  • Target

    2024-05-21_361510194b9858c85f465043d22e96b5_cryptolocker.exe

  • Size

    55KB

  • MD5

    361510194b9858c85f465043d22e96b5

  • SHA1

    bcd79ebb5a17f9994a64d8f936038ecce013a214

  • SHA256

    e261d12990953c728f8d9819693852ee8737427a65123014261d6c017c5ec60f

  • SHA512

    25fd17ca82f1d010dc08254cf55c81ee4aed6bdc22c2c8845aa529b2304ba5c908794df18226de218db9cd5cdd666ff4b313fa0afcd8931c227462d0b1affcd6

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdO5UjL:ZVxkGOtEvwDpjcm

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-05-21_361510194b9858c85f465043d22e96b5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-21_361510194b9858c85f465043d22e96b5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5060
    • 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:2424

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    55KB

    MD5

    75c2992071ecce031b7c7e1206edbb95

    SHA1

    855ca709e65c094e87bacbf1c12dd837bd07d1d9

    SHA256

    442bebb465f177490412b5f3bb5aa81a41b904b2db7651a0d340dd6cae29d697

    SHA512

    22002d867d420ba01a301fc00ce7471a74b11dc816011393cbd0df79ba5e2c91b126e4679019c038fe5d3a8354e2d035562a2ae7c5a6feb4e81be0367de6355e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2424-18-0x0000000000450000-0x0000000000490000-memory.dmp

    Filesize

    256KB

  • memory/2424-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2424-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/5060-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/5060-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/5060-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/5060-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/5060-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB