Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-10-2024 06:37

General

  • Target

    2024-10-10_cf3ba133a8b6bcb83ae2d8118c25cfa9_cryptolocker.exe

  • Size

    34KB

  • MD5

    cf3ba133a8b6bcb83ae2d8118c25cfa9

  • SHA1

    c47325d5e447aaa6e3121d544b8fdb76af1c7fa8

  • SHA256

    f6dc0ace42df931cb357623e79ad2353369fa4fd6c6de2d7ea5b4098c950543a

  • SHA512

    e4ade634f2ab8d9f8b9a5754f1e1b00a47cad75ade021a97c5e1a6e63978a006fcc3e6a209534893bef7233d8fbbf9aba46e4e638de3fe32d3fced56ac4318cc

  • SSDEEP

    384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoi0WlLYZAM9BWpS65:b7o/2n1TCraU6GD1a4X0WlK5gS4

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
  • 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\2024-10-10_cf3ba133a8b6bcb83ae2d8118c25cfa9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-10_cf3ba133a8b6bcb83ae2d8118c25cfa9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4252
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1068

Network

  • flag-us
    DNS
    spinistry.com
    rewok.exe
    Remote address:
    8.8.8.8:53
    Request
    spinistry.com
    IN A
    Response
    spinistry.com
    IN A
    64.98.135.121
  • flag-us
    DNS
    68.32.126.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    68.32.126.40.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    83.210.23.2.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    83.210.23.2.in-addr.arpa
    IN PTR
    Response
    83.210.23.2.in-addr.arpa
    IN PTR
    a2-23-210-83deploystaticakamaitechnologiescom
  • flag-us
    DNS
    53.210.109.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    53.210.109.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    171.39.242.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    171.39.242.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    21.236.111.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    21.236.111.52.in-addr.arpa
    IN PTR
    Response
  • 64.98.135.121:443
    spinistry.com
    rewok.exe
    260 B
    5
  • 64.98.135.121:443
    spinistry.com
    rewok.exe
    260 B
    5
  • 64.98.135.121:443
    spinistry.com
    rewok.exe
    260 B
    5
  • 64.98.135.121:443
    spinistry.com
    rewok.exe
    260 B
    5
  • 64.98.135.121:443
    spinistry.com
    rewok.exe
    260 B
    5
  • 64.98.135.121:443
    spinistry.com
    rewok.exe
    260 B
    5
  • 64.98.135.121:443
    spinistry.com
    rewok.exe
    260 B
    5
  • 64.98.135.121:443
    spinistry.com
    rewok.exe
    52 B
    1
  • 8.8.8.8:53
    spinistry.com
    dns
    rewok.exe
    59 B
    75 B
    1
    1

    DNS Request

    spinistry.com

    DNS Response

    64.98.135.121

  • 8.8.8.8:53
    68.32.126.40.in-addr.arpa
    dns
    71 B
    157 B
    1
    1

    DNS Request

    68.32.126.40.in-addr.arpa

  • 8.8.8.8:53
    83.210.23.2.in-addr.arpa
    dns
    70 B
    133 B
    1
    1

    DNS Request

    83.210.23.2.in-addr.arpa

  • 8.8.8.8:53
    53.210.109.20.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    53.210.109.20.in-addr.arpa

  • 8.8.8.8:53
    171.39.242.20.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    171.39.242.20.in-addr.arpa

  • 8.8.8.8:53
    21.236.111.52.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    21.236.111.52.in-addr.arpa

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    34KB

    MD5

    572174ea6695f569ce659379152c9909

    SHA1

    1273bccf7a6bc4cc139e0ff512d1662950a2d9b6

    SHA256

    ae50e802b16f1c11f382565c81b3ee1a60997a3cf7096c4191059e3228c65fbf

    SHA512

    bd5dd054fd5d568f57e312e06e28a7f697f8ebf1ab1990e1d69187a6e6156210ef11acf23c04be97f982a9ad879389c4204dd981e5df77f45cad26ba8ea30bfb

  • memory/1068-25-0x0000000002020000-0x0000000002026000-memory.dmp

    Filesize

    24KB

  • memory/4252-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/4252-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/4252-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

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