Analysis

  • max time kernel
    94s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-07-2024 02:29

General

  • Target

    2024-07-27_fb9cd88b1ce72608bc96fd34268d7bf9_cryptolocker.exe

  • Size

    55KB

  • MD5

    fb9cd88b1ce72608bc96fd34268d7bf9

  • SHA1

    2c417bec35bb4abd5ab57de63f1fe98fc24e2590

  • SHA256

    32762be27b5c09ebe1931b4fbd2a66843a6b2692ca5c564093ff7a2c83f1e811

  • SHA512

    bdc06bedfcc50bbe84c02e9fbef16c458b2a0f5af4335c8d2508d9963a3da73f712a879c17cef50cc508f53f932f4fead8e37e0adc40f91dc61c40cb9b4c3590

  • SSDEEP

    768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelagPXPECuMpS:zj+soPSMOtEvwDpj4HE9MpS

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\2024-07-27_fb9cd88b1ce72608bc96fd34268d7bf9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-07-27_fb9cd88b1ce72608bc96fd34268d7bf9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3840
    • 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:4076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    55KB

    MD5

    809c87497e54cc2405c2a11b991d7e0a

    SHA1

    7b49fa559c46ac80c39c0e4dc17e038ba20ada60

    SHA256

    58f780f2adc7ac26da95ae0e54c3e26754db18159c378d753fb37c6a8ba77041

    SHA512

    5c0fbee762ef6c7e6bbde619048802845705897cad6668b050c9c869e4140af6ac501d1f518cb46e732ae128d1a09c3a37d4b2bc3d5868f44abb3180babc57f9

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3840-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3840-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3840-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3840-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/3840-25-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4076-24-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/4076-18-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/4076-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB