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Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/05/2024, 15:32

General

  • Target

    2024-05-29_58048df9a86bdb437b845510172f2241_cryptolocker.exe

  • Size

    49KB

  • MD5

    58048df9a86bdb437b845510172f2241

  • SHA1

    bc115bee22e5751d6a4ee71ad5e2cbe4a6f6ad29

  • SHA256

    cfbaa41d184a0a39aaaa44d9b2b71bee463425407aaa512413f9a67402b69012

  • SHA512

    b4c88730135dca54e8a9ad1f6e684da3f95a14860e41658dd1489ba75718cf8e3367cd31e9cb81d2ff10599384919e1f5b0c421ab490c1463fbf1836f2886efb

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9Rva/yYsm06Md:xj+VGMOtEvwDpjy+viHs7pd

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 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\2024-05-29_58048df9a86bdb437b845510172f2241_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_58048df9a86bdb437b845510172f2241_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3200
    • 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:1076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    49KB

    MD5

    d4ee86412a485fafe9bcbd9b07663f72

    SHA1

    7fd1285837427ec1057ac5267b1ceb8696eb44d1

    SHA256

    9aa9ee0c3808205fe6b878433fe8527426f96373e6892fff6dda6ed9abbc5618

    SHA512

    97b3c27500f404d0de917fee33fdf5ccb798e0c24ce7fa672333942fe2468f6998344efe2d5d0aea356cea5f93cf20dfcac722d0965df4016d73b3b1809d36ca

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1076-19-0x0000000002000000-0x0000000002006000-memory.dmp

    Filesize

    24KB

  • memory/1076-25-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/1076-46-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3200-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3200-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3200-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/3200-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3200-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB