Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 00:56

General

  • Target

    2024-05-23_e3b9cc4bbbe4fb7585156799b686fb31_cryptolocker.exe

  • Size

    48KB

  • MD5

    e3b9cc4bbbe4fb7585156799b686fb31

  • SHA1

    8381ef26aecb807cebc17dba67a933654dbb03b8

  • SHA256

    e7dca0d73fb9c7f73e812a8e7d3cf4c0065cbdeb5ecde9023930f4caf4301755

  • SHA512

    51625ecde1f516e3c742f6003db4717af5be25aa3d7e9eae2cb8287f95ae5d7f833fd07fb6d294671d4895f70365cd180fb717dfda19f6326a064f33c0c66dbb

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0nD:vj+jsMQMOtEvwDpj5HczerLO04Bg

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\2024-05-23_e3b9cc4bbbe4fb7585156799b686fb31_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_e3b9cc4bbbe4fb7585156799b686fb31_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4900
    • 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:2452

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    b2f813b00e6c451ccd46cd681218e9bd

    SHA1

    cc0183213689f49412285a6217dec37f1ae19645

    SHA256

    9aacf078ec422280152736abf8187cbe2c630c5a58dd32bf4adaafdfe07e987c

    SHA512

    52dc93f867d0d1a1c7e2f49be155ae75feb5d384a8f76610d7739dd8d86cf73a683b820f89e9ee8ad8f1dabae9f8c04adbadc6bd8b91ddd2817fd3b82b4be673

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2452-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2452-17-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/4900-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4900-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4900-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB