Analysis

  • max time kernel
    102s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/09/2024, 01:21

General

  • Target

    2024-09-07_c627e52e04b8161491d62bcbd320a39e_cryptolocker.exe

  • Size

    57KB

  • MD5

    c627e52e04b8161491d62bcbd320a39e

  • SHA1

    dd2088521ceb0b915e1230f53bfcaa3601316903

  • SHA256

    b5c2d9135d474469ac802f1cc4bb022a8695babe15ff87a7fc2556b03ec40f33

  • SHA512

    e123c5240a7041345a69d6d7209e83a718b36b94880b14f8e49ca22997a1fb3b9e02e70dfa83178a823c2b1ac89632af55094966c312c6a9cfbfa9a7cb9b3d91

  • SSDEEP

    768:HQz7yVEhs9+iy6DX4WTnbcuyD7U4tOOtEvwDpj/L9+4hdCY8EQMjpi/zcB:Hj+i2WTnouy84MOtEvwDpjZHyju

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-07_c627e52e04b8161491d62bcbd320a39e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-07_c627e52e04b8161491d62bcbd320a39e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4608
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:3772

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    57KB

    MD5

    d173223a8000790d9376bb0a6f6d1262

    SHA1

    936b61fe37205aa2df9fa573dae187833ffa1607

    SHA256

    b99b2f4d029140008abfb8a84759013b71ed87763968a24bc4c6164491157898

    SHA512

    fb976c37f637c2c890d3c55b029a06ab5c76bdf335d7120e81cd9922ccdd02d9627ce6542fea178591e70339b3c2c5f4c4dba6a1e5481a5bc608141cfd16deb8

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3772-18-0x0000000001F50000-0x0000000001F56000-memory.dmp

    Filesize

    24KB

  • memory/3772-25-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/3772-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4608-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4608-1-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/4608-2-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/4608-3-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/4608-24-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB