Analysis

  • max time kernel
    140s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 01:35

General

  • Target

    2024-05-22_1f6610d85973dd027de5c78853000c87_cryptolocker.exe

  • Size

    51KB

  • MD5

    1f6610d85973dd027de5c78853000c87

  • SHA1

    eb2aff764c098155507822e6ed97901040a6f495

  • SHA256

    38ad8662e45b3eb51be97e7852945a59a154c8f40a11e09bc6097294972c2633

  • SHA512

    a2bcade852cadfcefe8525a016e07bfea2d6808d17a8c3e0261894e739549b79c1e5390ab65fc42d30995e30b30ab5ba41d17d541bb6d791392a45ed628485c0

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRY+iyyw:6j+1NMOtEvwDpjr8hhXy+iyyw

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-05-22_1f6610d85973dd027de5c78853000c87_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_1f6610d85973dd027de5c78853000c87_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1560
    • 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:368

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    52KB

    MD5

    7e2de5fda6cb752bfb569e46b7fca262

    SHA1

    740a985dd1706f7f2928ac18f6ae30dde4a3b0f9

    SHA256

    811dfda2602f010b71d5da7270d30265f4b6b77912c0bc269ddf4c257921c737

    SHA512

    52abcb2a82ff9af09586960b04776bf0f25900c9cd9a88f2012f28b4ce3fabb7a26d4b9edb87c942529149e17ba7d0e779b27fbb1361858528a150e63bdc4c48

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/368-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/368-20-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/368-21-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/368-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1560-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1560-1-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/1560-9-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/1560-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/1560-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB