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Overview

overview

10

Static

static

10

2024-04-16...er.exe

windows7-x64

9

2024-04-16...er.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/04/2024, 03:58 UTC

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General

  • Target

    2024-04-16_9fc938fd1c7e7bea6280780069ec5840_cryptolocker.exe

  • Size

    60KB

  • MD5

    9fc938fd1c7e7bea6280780069ec5840

  • SHA1

    660d447f2bde93ad2c3ffb45657a9fbb6ca34507

  • SHA256

    5e8077c470f27970eb54b2720e0fd1f0d49dc7beb3d93c4e6833774e5f209375

  • SHA512

    97e0f74a1da43a977a0428b57a5bc440436f98d4037489e825cd309c8bab624f00fb55462b9af0a36cf572db8117e47ca9780970707f73d54fcb89ee26b9e202

  • SSDEEP

    768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XG9Q:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWh

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-16_9fc938fd1c7e7bea6280780069ec5840_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-16_9fc938fd1c7e7bea6280780069ec5840_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4992
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2344

Network

  • flag-us
    DNS
    68.159.190.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    68.159.190.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    9.228.82.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    9.228.82.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    bestccc.com
    misid.exe
    Remote address:
    8.8.8.8:53
    Request
    bestccc.com
    IN A
    Response
    bestccc.com
    IN A
    103.14.121.240
  • flag-us
    DNS
    21.114.53.23.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    21.114.53.23.in-addr.arpa
    IN PTR
    Response
    21.114.53.23.in-addr.arpa
    IN PTR
    a23-53-114-21deploystaticakamaitechnologiescom
  • flag-us
    DNS
    157.123.68.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    157.123.68.40.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    206.23.85.13.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    206.23.85.13.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    100.58.20.217.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    100.58.20.217.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    95.16.208.104.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    95.16.208.104.in-addr.arpa
    IN PTR
    Response
  • 103.14.121.240:443
    bestccc.com
    misid.exe
    260 B
     5
  • 103.14.121.240:443
    bestccc.com
    misid.exe
    260 B
     5
  • 103.14.121.240:443
    bestccc.com
    misid.exe
    260 B
     5
  • 103.14.121.240:443
    bestccc.com
    misid.exe
    260 B
     5
  • 103.14.121.240:443
    bestccc.com
    misid.exe
    260 B
     5
  • 103.14.121.240:443
    bestccc.com
    misid.exe
    260 B
     5
  • 103.14.121.240:443
    bestccc.com
    misid.exe
    260 B
     5
  • 103.14.121.240:443
    bestccc.com
    misid.exe
    52 B
     1
  • 8.8.8.8:53
    68.159.190.20.in-addr.arpa
    dns
    72 B
     158 B
     1
    1

    DNS Request

    68.159.190.20.in-addr.arpa

  • 8.8.8.8:53
    9.228.82.20.in-addr.arpa
    dns
    70 B
     156 B
     1
    1

    DNS Request

    9.228.82.20.in-addr.arpa

  • 8.8.8.8:53
    bestccc.com
    dns
    misid.exe
    57 B
     73 B
     1
    1

    DNS Request

    bestccc.com

    DNS Response

    103.14.121.240

  • 8.8.8.8:53
    21.114.53.23.in-addr.arpa
    dns
    71 B
     135 B
     1
    1

    DNS Request

    21.114.53.23.in-addr.arpa

  • 8.8.8.8:53
    157.123.68.40.in-addr.arpa
    dns
    72 B
     146 B
     1
    1

    DNS Request

    157.123.68.40.in-addr.arpa

  • 8.8.8.8:53
    206.23.85.13.in-addr.arpa
    dns
    71 B
     145 B
     1
    1

    DNS Request

    206.23.85.13.in-addr.arpa

  • 8.8.8.8:53
    100.58.20.217.in-addr.arpa
    dns
    72 B
     132 B
     1
    1

    DNS Request

    100.58.20.217.in-addr.arpa

  • 8.8.8.8:53
    95.16.208.104.in-addr.arpa
    dns
    72 B
     146 B
     1
    1

    DNS Request

    95.16.208.104.in-addr.arpa

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    60KB

    MD5

    4b2bccdd16b47b94ee55df1578b7caeb

    SHA1

    d816f5434b87fb16c84f383ea67b80539d0eb5b8

    SHA256

    cc5a2905cf7b80dda3bdc375eef65b6aac6f4804610d927569041ef7cc2cc12a

    SHA512

    1da7c693cbc04f0bbd0033b75fd8ad872733ef8313ef7d6a0050f47dbc907b7dc26d3e08d5cb5a5db1bfdd4da1ada4fcb2d354ac59677dd754a3d3bccce3799f

    Download Submit

  • memory/2344-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

    Download

  • memory/2344-21-0x0000000001F70000-0x0000000001F76000-memory.dmp

    Filesize

    24KB

    Download

  • memory/2344-20-0x0000000000530000-0x0000000000536000-memory.dmp

    Filesize

    24KB

    Download

  • memory/2344-27-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

    Download

  • memory/4992-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

    Download

  • memory/4992-1-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

    Download

  • memory/4992-2-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

    Download

  • memory/4992-3-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

    Download

  • memory/4992-18-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

    Download

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