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Analysis

  • max time kernel
    94s
  • max time network
    143s
  • 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, 00:36

General

  • Target

    2024-09-07_3dfbf3529cff48a54c92aab8b3abb227_cryptolocker.exe

  • Size

    55KB

  • MD5

    3dfbf3529cff48a54c92aab8b3abb227

  • SHA1

    420c2dd105df441d6041798ff3a60b92be51650e

  • SHA256

    afd738ae7c725341010d180c9050d6a579f56d636066818d5a0dd020c64fbc3a

  • SHA512

    a3a9f9cbb9de6b2aaf39fadfa413876140edc8bd97fdf93b4d8cdd2fc076811c9bb11aa05b85bcf580ec9c341c159e7a8d98c35bb511eb46285bfd1c4bbc030a

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCW1nw71TkhsiPn1YFvP5:vj+jsMQMOtEvwDpj5HH1nw73KOF5

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
  • 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_3dfbf3529cff48a54c92aab8b3abb227_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-07_3dfbf3529cff48a54c92aab8b3abb227_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4504
    • 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:3488

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    55KB

    MD5

    de91c054bc60d6a34fd15064320879d4

    SHA1

    a1b3938bc726e22c046e03ac8016aaa553011f03

    SHA256

    b83c0ede607ecf7b42a0dce8188b0c68e67ed31dee11920b21ec0e8372da58e3

    SHA512

    eee0f7059123fae5a3f30099dcf7140fe310ef6c93ae2eb9b1d70956c955d763fd36ee2f718adfee1df614baf03c8ade8981c3d8e5f29c2d5cc936289a1567b0

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3488-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3488-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4504-0-0x0000000002190000-0x0000000002196000-memory.dmp

    Filesize

    24KB

  • memory/4504-1-0x0000000002190000-0x0000000002196000-memory.dmp

    Filesize

    24KB

  • memory/4504-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB