Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 00:57

General

  • Target

    2024-05-23_e7692dc008a5b7c8c7e468da861f982b_cryptolocker.exe

  • Size

    44KB

  • MD5

    e7692dc008a5b7c8c7e468da861f982b

  • SHA1

    b18db0e1f03cf24f54dc3f1767ecbb77b97c7fc0

  • SHA256

    e45a06ac35200bf99bc0cebea9c976a0cc34c99ecb15ead429fb837a158aefab

  • SHA512

    dff5cdef940ba3779964104a6be11b2c2a8b360560f3aa17cf52dd29ad48cead4b9525337bf90c0e9727f7b00a4f03aa6fe2516259be95b1a19915ed79662f39

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4REL+cc66Tcue:vj+jsMQMOtEvwDpj5HW5scue

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-23_e7692dc008a5b7c8c7e468da861f982b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_e7692dc008a5b7c8c7e468da861f982b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4628
    • 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:956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    02dc2d94f4dfe14e13dca19bdc1175b3

    SHA1

    8d6572c38a0a90ff20414dbfa49931cf2ade298f

    SHA256

    6fe3913460324a17503998ae40d8d2688ea8334af63aaff5aff5d16fee40b918

    SHA512

    5fa2c6d55753b53db5202e7ec45cbd033cfd7f6e3f7be24588528027c9d0b28119c072999493542cd6429ce44dba4962acfd8e50f0acca0dc4694861f04bdc90

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/956-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/956-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4628-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4628-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/4628-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB