Analysis

  • max time kernel
    116s
  • max time network
    192s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/01/2024, 23:15

General

  • Target

    2024-01-18_b219656b1615476cb282c115ab1de443_cryptolocker.exe

  • Size

    56KB

  • MD5

    b219656b1615476cb282c115ab1de443

  • SHA1

    07c8dfac280498b99a988b8a9cef19d6eaf5bb90

  • SHA256

    05e2711e43afce72c028ac939626d61998d3b8b601388c1a1eb18fac4c27a18a

  • SHA512

    0892a120a9d6a5f34b86b4d49bb24a70a6e2a681ed77cd844f2dc06040cbf1f2c3b7bdc5a0da614be18f9218c5611ff78969176889804223d5148b1b9cf9d1c4

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7GoF1:xj+VGMOtEvwDpjubEgy1

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\2024-01-18_b219656b1615476cb282c115ab1de443_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-18_b219656b1615476cb282c115ab1de443_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2004
    • 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:1144

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    56KB

    MD5

    c6ae7cab5e032b854dc9abca591f7a70

    SHA1

    badadd1fe48a16546bc36a0b28388254f56938b7

    SHA256

    34da2a39c269424f47f19d2d1fdf2e0e361b2f487d2a5d08c5874d3349c92632

    SHA512

    ae7038dc56b9e6cc22680eb25122b390e264d53eb5adfeabb346a6fbd5bb2c13beba3eb3c5577fccee450b25a25bddd39afd9f5b0b0c74e02b867dbe020e3906

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1144-18-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/1144-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/1144-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2004-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2004-1-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/2004-2-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/2004-3-0x0000000002240000-0x0000000002246000-memory.dmp

    Filesize

    24KB

  • memory/2004-25-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB