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Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/05/2024, 04:09

General

  • Target

    2024-05-01_45d64ae408005e20be07cbb22728d6fd_cryptolocker.exe

  • Size

    61KB

  • MD5

    45d64ae408005e20be07cbb22728d6fd

  • SHA1

    e6bdc056992e5523920dfc2d8b7b7e3b49064245

  • SHA256

    dfe4a00f4d0620b3a646e7fb78c8ff72e80e6c00db33a5c6a4279d45a3b74c3c

  • SHA512

    cab4adbb79092568e0575a94adeec823a46e486f33e2506c82177b080db07242bb80eeb25f09b2abcd4300f7398575485124978010bb4f6d228b97d3a0d3921a

  • SSDEEP

    768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XG9R:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWw

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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\2024-05-01_45d64ae408005e20be07cbb22728d6fd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-01_45d64ae408005e20be07cbb22728d6fd_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4532
    • 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:2524

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    61KB

    MD5

    7469d64f4a9f6391276825c64ccb141a

    SHA1

    0ead49b0c30939f35c793f9068b0be8875211b53

    SHA256

    453eb3cc48faf4fd8445f44515f0209043267d0e34b78cb9934d79b15b2a3d63

    SHA512

    e87fc84cccd1b1e4024410d7dd8189ce21752a40ce95334a43d30fc15bac67edb8bbaafb7d7921d04314c9e31524ea08a7de8a6ea86a1751f0bbd71da4bf550c

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2524-19-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

    Filesize

    24KB

  • memory/2524-25-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

    Filesize

    24KB

  • memory/2524-48-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4532-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4532-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/4532-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/4532-8-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/4532-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB