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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/09/2024, 07:36

General

  • Target

    2024-09-08_c106e4f7aa7908e7bf9062fb3216d4cd_cryptolocker.exe

  • Size

    80KB

  • MD5

    c106e4f7aa7908e7bf9062fb3216d4cd

  • SHA1

    26d8e159bb19fa7ec1a94114f47287256fbb91e1

  • SHA256

    43d6391abac98e884119d61016e161852ed72e1ec3358a6ca41faa0301930bca

  • SHA512

    a6dc0b9ff864fcfe07914b15db567dad299a6a0249e25fd06724acc9f1b523167d601e68a24bdd4dfe1f363b28d996478945362e4a6722e86c609a43c579fbf7

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOA+YSafiPuqdo:T6a+rdOOtEvwDpjNcB

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 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.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-08_c106e4f7aa7908e7bf9062fb3216d4cd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-08_c106e4f7aa7908e7bf9062fb3216d4cd_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2752
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    81KB

    MD5

    44715fbdf5efab02ee428f63b5744023

    SHA1

    f2967c0d8408f7a440dbbb1ffb36cbb98e1a855a

    SHA256

    70c4db23aac88c384579dd9359f5018e8204d41cd8a2d53ee3b5433b82e0aa35

    SHA512

    3725cce1866b4f7b480109542b1a552ce4b5ea928008b833a9971b2365339e9dc57c957f715c6fcdf15fa47a02660fcb30c68e3fb85a13863cb24f3c19429a59

  • memory/2560-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2560-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2560-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2752-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2752-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2752-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2752-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/2752-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB