Analysis

  • max time kernel
    130s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/05/2024, 16:30

General

  • Target

    2024-05-24_6d30c2ebc280f5045743471c24e03c83_cryptolocker.exe

  • Size

    70KB

  • MD5

    6d30c2ebc280f5045743471c24e03c83

  • SHA1

    5c2df3cb87b40ea3138edf1783af9f00dceab95f

  • SHA256

    78149282fa5923b04e671a45cb60335d4ac03de6d8bb823987990852be3331af

  • SHA512

    caaadca80121310f022e8e042bdf45c153346bc058c004d1e788e435694f1de322fd8aca0e6da25b9424cac2d91639a226e6a024c2f11743a936d28ca912cd0e

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/RD:vj+jsMQMOtEvwDpj5HZYTjipvF24L

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\2024-05-24_6d30c2ebc280f5045743471c24e03c83_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_6d30c2ebc280f5045743471c24e03c83_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4728
    • 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:1948

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    70KB

    MD5

    4db9ba2aad1ea9faba961bd17098bdd7

    SHA1

    536ac697d1a31c6611b3a60a5251b91f47c24f2e

    SHA256

    1ccd039989c9da1278561a1a55f71312a98480c5f68b8f4672aafaa076157555

    SHA512

    b237a845b6326a09a32504930a48dc8dee31e9f395e63873f2c400ae00ad069d799875cc81f467f737ffa78f81006b586358988da94a1f79aed9da9d211b122a

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1948-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/1948-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4728-0-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/4728-1-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/4728-8-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB