Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-05-2024 00:35

General

  • Target

    2024-05-25_58ee60ed8adfd4afc280839fb13f8a9a_cryptolocker.exe

  • Size

    67KB

  • MD5

    58ee60ed8adfd4afc280839fb13f8a9a

  • SHA1

    fec1a1ea2f6ba7b954cea4bbc06e96f8d71cfd5d

  • SHA256

    0f3cd5041e4ba2c451c1bbfba274a1a2c16978db2305297f522e1a59094415c4

  • SHA512

    3f1dbf9d66152b239985390cbb40cedf169017658a9dc41d9cbaf9e1aa35410d43430a783efbc8a08fccbab9e69b6fa83ae92f33a536e5cadb693fee72b6e07b

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPvdfGyZ:TCjsIOtEvwDpj5HE/OUHnSMYu

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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\2024-05-25_58ee60ed8adfd4afc280839fb13f8a9a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_58ee60ed8adfd4afc280839fb13f8a9a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4260
    • 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:1992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    67KB

    MD5

    8b6f2a455d832487f75957abe079721b

    SHA1

    543cf29413938f77f36541bd1f4f88a4a68c0784

    SHA256

    e63daf6f3745e817aa26a4ae7a168a3fb8c1f2ea2af85c945d69e41321187597

    SHA512

    0ae14595550eb22f0c32d120690b72c67717cb382b5c08ee239b61f4ef987824add651dc8f3e69a74adf473c1d08598a13307756bd8fd7f09e8fbe840409853d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1992-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1992-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1992-26-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1992-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4260-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4260-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4260-2-0x0000000000870000-0x0000000000876000-memory.dmp

    Filesize

    24KB

  • memory/4260-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4260-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB