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Analysis

  • max time kernel
    135s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/05/2024, 09:34

General

  • Target

    e9539a3e43be6feb889af892499e225fc2c2092d402851f4d0e1700cab2d4ff2.exe

  • Size

    92KB

  • MD5

    ae715d250c02a3a18b01540c90b1b557

  • SHA1

    11f6b25c47750efa70aaa3fc42c386d402f8b0d1

  • SHA256

    e9539a3e43be6feb889af892499e225fc2c2092d402851f4d0e1700cab2d4ff2

  • SHA512

    2c0f5debee3f4f5c2932cca4dd78f53dbdcb132f9c60ff5d6ebbfcb4fdb1bd64db0b0895cbe997b896635d319c474cf271671d0987c5c547097c8b4cc191adcb

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5H8u8rBN6nqEZNi1OkQNpZYrsN:vCjsIOtEvwDpj5H8zPszN

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\e9539a3e43be6feb889af892499e225fc2c2092d402851f4d0e1700cab2d4ff2.exe
    "C:\Users\Admin\AppData\Local\Temp\e9539a3e43be6feb889af892499e225fc2c2092d402851f4d0e1700cab2d4ff2.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4044
    • 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:4484

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    93KB

    MD5

    d6b0e6ebda15c5ce826685e7a399291e

    SHA1

    35d876d599cba46e294d11d597676b8738380083

    SHA256

    362727f6f0fb1f88312b6121a0e898ab97800d2bc69dcf8c45e1f5ed0a6ebca6

    SHA512

    abf9db7347ac6e0b261bc0ed1ceb69c2f50678d7591e600c7c4e2ddce3f508681e412022f33149d5b71226caa9c8f1439bf30c5d9f1ba33b7941936f5a77efc0

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4044-0-0x0000000002140000-0x0000000002146000-memory.dmp

    Filesize

    24KB

  • memory/4044-1-0x0000000002040000-0x0000000002046000-memory.dmp

    Filesize

    24KB

  • memory/4044-8-0x0000000002140000-0x0000000002146000-memory.dmp

    Filesize

    24KB

  • memory/4484-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4484-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB