Analysis

  • max time kernel
    93s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-03-2024 03:35

General

  • Target

    2024-03-29_3d9cd18f4092a35b44ea355c7ed91eab_cryptolocker.exe

  • Size

    37KB

  • MD5

    3d9cd18f4092a35b44ea355c7ed91eab

  • SHA1

    438f623c4b8a9500eb359b2a117e21da69a64431

  • SHA256

    19af12524810be0e448d9c6ad80be5ac695591ff2f293089c9f85f498d43583a

  • SHA512

    31594118e7ef1c6622267ae4fb065456389a05d6cc588bcdc68c8ead16206bed810d316fa2ae66513e73d823063c163a949025aa13872543c224205b0682bc2d

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenU3:ZzFbxmLPWQMOtEvwDpjLeq

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\2024-03-29_3d9cd18f4092a35b44ea355c7ed91eab_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-29_3d9cd18f4092a35b44ea355c7ed91eab_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3700
    • 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:3136

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    0e9530cbbcca98c702e9d6237a71cad2

    SHA1

    986a990aefc3427c73fddaf8cdfff03b454d6ab1

    SHA256

    f73c0c0239a1b6e81ff54ae512a5294b731b29fd8b01adb7e16063ef1cdaffa3

    SHA512

    c05c619078a8b51e838a52077c02f6902d816728fdf9b7efd931308c5255f121b8953473a77ad977fb6a6103181d87a014a5e4b3cd7f36c17b14a1c2bb8e3dde

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3136-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3136-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3700-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/3700-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/3700-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/3700-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB

  • memory/3700-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB