Analysis

  • max time kernel
    94s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-05-2024 14:29

General

  • Target

    2024-05-02_2624dec502be233d40d064b8d9ca1211_cryptolocker.exe

  • Size

    40KB

  • MD5

    2624dec502be233d40d064b8d9ca1211

  • SHA1

    2c328aef8b2b205983fca93da3f4caa03929ceae

  • SHA256

    b9c738ddf3acfdfae6d270c112ad679d7741846b77021c75ae473fa0d4c65330

  • SHA512

    8298c11f71b1d3574f0f20279401b0916d713c3164669b488a64e4cbecbffd1ef7004ba4786b80404f409aa865bb9868b325d442637dc5024ad24adeba200d7f

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuD+c:ZzFbxmLPWQMOtEvwDpjLeJAsKcp

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\2024-05-02_2624dec502be233d40d064b8d9ca1211_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-02_2624dec502be233d40d064b8d9ca1211_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:908
    • 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:1900

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    8811ca24dc525fd25710850a033e75a9

    SHA1

    04bb4f0e1f6c5e3ef88ad032414bf4754b34e335

    SHA256

    108d8bb541eb3a6cdedaa7a826d753b612bb2818e315daeb0bc217419617c6d4

    SHA512

    72e4c95fca5855b5dbf0eb909cecc80e2496b1adda6513ac5181a0ae1be0a3dbb62bf036ba46888ddaa361cc86efc46ec2f2eb06a4b0f8456914a7bd2f406f7c

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/908-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/908-1-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/908-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/908-9-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/908-25-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/1900-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/1900-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/1900-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB