Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-05-2024 19:41

General

  • Target

    2024-05-14_b33d022c7d7d87b713ee3a101bc3d314_cryptolocker.exe

  • Size

    76KB

  • MD5

    b33d022c7d7d87b713ee3a101bc3d314

  • SHA1

    7a19ce2640586b78d0bb27a360efa5e21b528d55

  • SHA256

    fdb674c19884494ef31195b4b94d26e8a37b617515d7c799cd2eedb5df177665

  • SHA512

    6f83b869d0e7e806a8be2fe716b9b5e0879cb37da78107eda2eb5686503f98dc8c1c064ce5b4b7ef9aad46b5c43298eeadb054e5724771f84672fbc94f2386a3

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KUg:ZVxkGOtEvwDpjcaE

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-14_b33d022c7d7d87b713ee3a101bc3d314_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-14_b33d022c7d7d87b713ee3a101bc3d314_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1328
    • 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:1584

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    76KB

    MD5

    3039e2a9d4c4d4a0b5a1a529e6e18b77

    SHA1

    3656d69a921507a4aad0addb408a00851ed18bf0

    SHA256

    55b33f8f00b6bffc7bb6beaf988e87337ea42edc561d016bdf68cc0e2f238e2a

    SHA512

    818607c513d7d1e5b93278237796e321074838f5769a32840953526e506be6417dca88b92e3e5109f23c37c9fa9d3bf3758ecb99072d563f836ac50e91c4a41b

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1328-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1328-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1328-0-0x00000000004A0000-0x00000000004A3000-memory.dmp

    Filesize

    12KB

  • memory/1328-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1328-16-0x00000000004A0000-0x00000000004A3000-memory.dmp

    Filesize

    12KB

  • memory/1584-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1584-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB