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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2024, 02:24

General

  • Target

    2024-10-02_0042bb58b7e97481e0f1563152c1c339_cryptolocker.exe

  • Size

    72KB

  • MD5

    0042bb58b7e97481e0f1563152c1c339

  • SHA1

    782520e9bd954d355064c35dbe7875936c4a285d

  • SHA256

    f07df4d2767fd26f5ef47587b5ca62e01eabce32372d0cbbae0e3026d433c4bd

  • SHA512

    0895b5ef279ca4ce53464679294eae5e1c8a8f8e2d7b41dc5ad6258bda56d4c685286deb2e0cded09c74f3e29397ec3b2a024367e1d86e7e135c69d4fb6048ac

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9I:C4Q2c94OtEvwDpj4H8zZ

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-02_0042bb58b7e97481e0f1563152c1c339_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-02_0042bb58b7e97481e0f1563152c1c339_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4220
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:1072

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    2d5c62efa04ccde116202d9e1398b07f

    SHA1

    c29191a4ec4b6c6c6cba38d77a3751ce6211dd86

    SHA256

    243304f441e2e2edbfb5da50192688f976fca03f04cf3b15c6595588a599542c

    SHA512

    dc50181d47127dc54858e35f4aaa9a3dc9b1f0a0b1c728284ea02507e668e1b7ea941b1f5d9b0788d2a344121d34c8af41eaa8da54db9daf52da23c6feb67c19

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1072-20-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1072-21-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/1072-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4220-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4220-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4220-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4220-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4220-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB