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Analysis

  • max time kernel
    89s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2024, 04:42 UTC

General

  • Target

    2024-01-24_5786ecd4209f408cc88f091e46f8e9bc_cryptolocker.exe

  • Size

    38KB

  • MD5

    5786ecd4209f408cc88f091e46f8e9bc

  • SHA1

    0f0bed354c391a74fd789db5c28a787c6a65bb2b

  • SHA256

    4ee6b60582fa255596cc51887bd68557371e08ae68dbed62b8a41b951ff538b2

  • SHA512

    e27690b1fc2ade70d73cbe952ddbdb6eacb1c07132e63c3e290ab07c5713921bf90fafb41ef3c437d915b05f24b6cdc4dfe8250cfc67b1fcbd305d32835086ce

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqhMxyqf:6j+1NMOtEvwDpjrfX

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 IoCs
  • 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-24_5786ecd4209f408cc88f091e46f8e9bc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_5786ecd4209f408cc88f091e46f8e9bc_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2416
    • 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:4836

Network

  • 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-in
    GET
    https://bestccc.com/hr/ho2.exe
    misid.exe
    Remote address:
    103.14.121.240:443
    Request
    GET /hr/ho2.exe HTTP/1.1
    Accept: text/*, application/*
    User-Agent: Updates downloader
    Host: bestccc.com
    Cache-Control: no-cache
    Response
    HTTP/1.1 404 Not Found
    Date: Wed, 24 Jan 2024 04:38:23 GMT
    Server: Apache/2
    Content-Length: 315
    Content-Type: text/html; charset=iso-8859-1
  • flag-us
    DNS
    217.106.137.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    217.106.137.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    194.178.17.96.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    194.178.17.96.in-addr.arpa
    IN PTR
    Response
    194.178.17.96.in-addr.arpa
    IN PTR
    a96-17-178-194deploystaticakamaitechnologiescom
  • flag-us
    DNS
    240.121.14.103.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    240.121.14.103.in-addr.arpa
    IN PTR
    Response
    240.121.14.103.in-addr.arpa
    IN PTR
    10314121240-static-reversegooddomainregistrycom
  • flag-us
    DNS
    crl.comodoca.com
    misid.exe
    Remote address:
    8.8.8.8:53
    Request
    crl.comodoca.com
    IN A
    Response
    crl.comodoca.com
    IN CNAME
    crl.comodoca.com.cdn.cloudflare.net
    crl.comodoca.com.cdn.cloudflare.net
    IN A
    172.64.149.23
    crl.comodoca.com.cdn.cloudflare.net
    IN A
    104.18.38.233
  • flag-us
    GET
    http://crl.comodoca.com/cPanelIncCertificationAuthority.crl
    misid.exe
    Remote address:
    172.64.149.23:80
    Request
    GET /cPanelIncCertificationAuthority.crl HTTP/1.1
    Connection: Keep-Alive
    Accept: */*
    User-Agent: Microsoft-CryptoAPI/10.0
    Host: crl.comodoca.com
    Response
    HTTP/1.1 200 OK
    Date: Wed, 24 Jan 2024 04:42:21 GMT
    Content-Type: application/pkix-crl
    Content-Length: 59678
    Connection: keep-alive
    Last-Modified: Wed, 24 Jan 2024 00:51:32 GMT
    ETag: "65b05f14-e91e"
    X-CCACDN-Mirror-ID: sscrl1
    Cache-Control: max-age=14400, s-maxage=3600
    Expires: Wed, 31 Jan 2024 00:51:32 GMT
    X-CCACDN-Proxy-ID: mcdpinlb1
    X-Frame-Options: SAMEORIGIN
    CF-Cache-Status: HIT
    Age: 2250
    Accept-Ranges: bytes
    Server: cloudflare
    CF-RAY: 84a59bfed8fc23e1-LHR
  • flag-us
    DNS
    136.32.126.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    136.32.126.40.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    23.149.64.172.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    23.149.64.172.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    95.221.229.192.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    95.221.229.192.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    196.249.167.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    196.249.167.52.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    183.59.114.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    183.59.114.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    56.126.166.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    56.126.166.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    217.135.221.88.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    217.135.221.88.in-addr.arpa
    IN PTR
    Response
    217.135.221.88.in-addr.arpa
    IN PTR
    a88-221-135-217deploystaticakamaitechnologiescom
  • flag-us
    DNS
    22.236.111.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    22.236.111.52.in-addr.arpa
    IN PTR
    Response
  • 103.14.121.240:443
    https://bestccc.com/hr/ho2.exe
    tls, http
    misid.exe
    1.1kB
    5.8kB
    13
    9

    HTTP Request

    GET https://bestccc.com/hr/ho2.exe

    HTTP Response

    404
  • 172.64.149.23:80
    http://crl.comodoca.com/cPanelIncCertificationAuthority.crl
    http
    misid.exe
    1.4kB
    62.1kB
    27
    47

    HTTP Request

    GET http://crl.comodoca.com/cPanelIncCertificationAuthority.crl

    HTTP Response

    200
  • 138.91.171.81:80
    46 B
    1
  • 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
    217.106.137.52.in-addr.arpa
    dns
    73 B
    147 B
    1
    1

    DNS Request

    217.106.137.52.in-addr.arpa

  • 8.8.8.8:53
    194.178.17.96.in-addr.arpa
    dns
    72 B
    137 B
    1
    1

    DNS Request

    194.178.17.96.in-addr.arpa

  • 8.8.8.8:53
    240.121.14.103.in-addr.arpa
    dns
    73 B
    139 B
    1
    1

    DNS Request

    240.121.14.103.in-addr.arpa

  • 8.8.8.8:53
    crl.comodoca.com
    dns
    misid.exe
    62 B
    143 B
    1
    1

    DNS Request

    crl.comodoca.com

    DNS Response

    172.64.149.23
    104.18.38.233

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

    DNS Request

    136.32.126.40.in-addr.arpa

  • 8.8.8.8:53
    23.149.64.172.in-addr.arpa
    dns
    72 B
    134 B
    1
    1

    DNS Request

    23.149.64.172.in-addr.arpa

  • 8.8.8.8:53
    95.221.229.192.in-addr.arpa
    dns
    73 B
    144 B
    1
    1

    DNS Request

    95.221.229.192.in-addr.arpa

  • 8.8.8.8:53
    196.249.167.52.in-addr.arpa
    dns
    73 B
    147 B
    1
    1

    DNS Request

    196.249.167.52.in-addr.arpa

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

    DNS Request

    183.59.114.20.in-addr.arpa

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

    DNS Request

    56.126.166.20.in-addr.arpa

  • 8.8.8.8:53
    217.135.221.88.in-addr.arpa
    dns
    73 B
    139 B
    1
    1

    DNS Request

    217.135.221.88.in-addr.arpa

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

    DNS Request

    22.236.111.52.in-addr.arpa

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    4e260b4744bf517f218405318ff296ad

    SHA1

    1f7f6cf6b51b31b657d3da756141fee4f5cf7b52

    SHA256

    44c1e42fb831fd44c996f07d2426cfd86c481fde246fe0a947077701aba247cc

    SHA512

    383ba0af01459cc54932eaba5cffa1b01bd20b2ad6f9ad1e1c239fd4431dde446df09478d6bcb94fe10a330f5504e546a94ce1e7a3cfd2f17ded88db96d30fca

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2416-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2416-1-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/2416-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/2416-3-0x00000000007F0000-0x00000000007F6000-memory.dmp

    Filesize

    24KB

  • memory/2416-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4836-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4836-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4836-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

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