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Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2024, 23:44

General

  • Target

    2024-01-27_7725f0262a937a673ae806f83ccbfce6_cryptolocker.exe

  • Size

    56KB

  • MD5

    7725f0262a937a673ae806f83ccbfce6

  • SHA1

    b6b184cb6267a7501400d9c4e02ea0ca9a6df5b4

  • SHA256

    ebd1622345626328b49133dca24eb7f94951cc4169e7305ba7b0c30e78153ebf

  • SHA512

    e76a80662c5f174f117ce1d77b24121b41dc0e9d4b6a1f050bac1ca83ae2fa66d2cf899023a0ccb307514fed58473f7c75daefd558ba3471ee2be12dca6de79a

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7GoFX:xj+VGMOtEvwDpjubEgyX

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 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\2024-01-27_7725f0262a937a673ae806f83ccbfce6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-27_7725f0262a937a673ae806f83ccbfce6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3968
    • 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:3036

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    57KB

    MD5

    99c55338fe24860bb70c4bd9e4844d54

    SHA1

    92519daf7d13635c43f6c53a4b34ea4ae94839f5

    SHA256

    f52150c2e4ddc35ebdcf9f083f985f0e53d4378d85580d9ebbb420cb3547c22d

    SHA512

    87bac6486a33a0c9b02508f38aa445e528af27e483445576020a274e64638161b2af71ef9c798699c059c249089d2e7e28b725ac5916e90b334c1e7b9cffc884

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3036-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3036-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3036-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/3036-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3968-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3968-1-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/3968-2-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/3968-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/3968-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB