Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-01-2024 06:08

General

  • Target

    2024-01-11_faa70bd2194f0a1edf51e46b8b22689a_cryptolocker.exe

  • Size

    55KB

  • MD5

    faa70bd2194f0a1edf51e46b8b22689a

  • SHA1

    8219d2755c42a0d05c20f589f96453be2fd7390f

  • SHA256

    323aad4ae3fb75b7323586c54cc221229aefcbcdc13ff1d9b54ac2847dd7d96f

  • SHA512

    1affb477c834a818197f46c73f35c7c89ea55426776cdca925ce4aa79378a61461b4e9d124ee7bfd5aded1d0e549b765f39489774337293014f2b20f498c122b

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7GoFw9:xj+VGMOtEvwDpjubEgyw9

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
  • 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\2024-01-11_faa70bd2194f0a1edf51e46b8b22689a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-11_faa70bd2194f0a1edf51e46b8b22689a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4976
    • 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:2412

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    56KB

    MD5

    730ad2a408b7b4c38e644bc42b313c7e

    SHA1

    768ba5545b393105a4bff79026023e20b57c6b97

    SHA256

    0dd266e6498c237893423aa8049da70444548fb4ad8ec5d3e8f417c22371ea50

    SHA512

    a50771424ebbfd4d0c155603073f57e4055b0d93e152869543521c91f37ddbf8951e0692a6212ccf4eba132932597253cf30b4822a8222f15b50b617bd27147b

  • memory/2412-22-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2412-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/2412-50-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4976-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4976-3-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/4976-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/4976-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/4976-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB