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Analysis

  • max time kernel
    143s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 04:18

General

  • Target

    2024-02-14_c8e3adeae74f4b69c4ad762e84035901_cryptolocker.exe

  • Size

    44KB

  • MD5

    c8e3adeae74f4b69c4ad762e84035901

  • SHA1

    51d36e153837380125a903cc4fbd3810a6c5170f

  • SHA256

    382f78cc7b5970bac034fa49168ac1f18a2859b1eb193910c649222209301458

  • SHA512

    313cacff80b839c7aae972b15699aa83be53b989c9508b5c1ad94d08226526c67123fa0c31c63a161e9e29313ca42d6db9d7bfa5f510b175fe3d8b658ab7f97c

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8z2iaSIO/WZrEu/d+qmsUHQ1ws8:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ1u

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-02-14_c8e3adeae74f4b69c4ad762e84035901_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_c8e3adeae74f4b69c4ad762e84035901_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1232
    • 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:4992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    45KB

    MD5

    d73638fa94a30b5ffd0b2ee686915d94

    SHA1

    c04598f090f21d372dc2e20a9ab2ca770671190f

    SHA256

    797d9849cfd3e5cc520cce96a0e6dfb44169c407557e4ce2d176dbd9110fb11a

    SHA512

    7eeb4d9947d0a1beb8a81c809980586cd16f66d4025f1c8145686c04314d7e448dcf462750c343f26b470efcc037aa735c793496cdd132072a6cd69938d09681

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1232-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/1232-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/1232-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/1232-3-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

  • memory/1232-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4992-19-0x0000000001F70000-0x0000000001F76000-memory.dmp

    Filesize

    24KB

  • memory/4992-20-0x0000000000840000-0x0000000000846000-memory.dmp

    Filesize

    24KB