Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    20/07/2022, 07:38

General

  • Target

    9135308a54128612137748dd6fc8689e.dll

  • Size

    5.0MB

  • MD5

    9135308a54128612137748dd6fc8689e

  • SHA1

    0557a164db5b41ba2925a37ada6896b6b361090a

  • SHA256

    374aa67752f851ee4bfd9b98b610cf7ee2e47d8d036fd0331a198c5d0e9238ea

  • SHA512

    d40c0dbd09f35f4ed62a7b95576b7647b8ddadf5304115b1fe74ad4688f89de64c93731ce029b61d181798ee2deff0cdc2d5bea33aded1bd796510f9534d8cbc

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (1268) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Executes dropped EXE 3 IoCs
  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Modifies data under HKEY_USERS 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\9135308a54128612137748dd6fc8689e.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1764
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\9135308a54128612137748dd6fc8689e.dll,#1
      2⤵
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:1460
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        PID:624
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:1184
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    PID:1288

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\WINDOWS\mssecsvc.exe

          Filesize

          3.6MB

          MD5

          b43a5385224265da3f585765f650e4a5

          SHA1

          513f04bed52b477d18a8d47f20ea3df4935bbc7f

          SHA256

          21fd068f15af2d4fd2981e0846d0a8f33ebd98516cf8d939e392d7faec542e7a

          SHA512

          da6a68f2397adf427cd2b755f88c251c3bca688498feda2c2d9aa53f17752ad3ecd7e6d9b2eaa3f988a18397819171f58e18872795d00b2a86eac4762d14d343

        • C:\Windows\mssecsvc.exe

          Filesize

          3.6MB

          MD5

          b43a5385224265da3f585765f650e4a5

          SHA1

          513f04bed52b477d18a8d47f20ea3df4935bbc7f

          SHA256

          21fd068f15af2d4fd2981e0846d0a8f33ebd98516cf8d939e392d7faec542e7a

          SHA512

          da6a68f2397adf427cd2b755f88c251c3bca688498feda2c2d9aa53f17752ad3ecd7e6d9b2eaa3f988a18397819171f58e18872795d00b2a86eac4762d14d343

        • C:\Windows\mssecsvc.exe

          Filesize

          3.6MB

          MD5

          b43a5385224265da3f585765f650e4a5

          SHA1

          513f04bed52b477d18a8d47f20ea3df4935bbc7f

          SHA256

          21fd068f15af2d4fd2981e0846d0a8f33ebd98516cf8d939e392d7faec542e7a

          SHA512

          da6a68f2397adf427cd2b755f88c251c3bca688498feda2c2d9aa53f17752ad3ecd7e6d9b2eaa3f988a18397819171f58e18872795d00b2a86eac4762d14d343

        • C:\Windows\tasksche.exe

          Filesize

          3.4MB

          MD5

          a318a9762a9d4b311922149f66189890

          SHA1

          ffd28d34af54652bf287dcf5f2d888c910589d38

          SHA256

          739e22ec12d7510fa24c3a26ede3505177156499546c2ed642b80d4f54b21822

          SHA512

          6c41fd78c336845546eca1a1f773f77978ea7bbd1a40947cb386161014658da5ccef78c904a1f4089fdc35a86a1e2176c57ac8560b92b6b4ece67d62ae717d14

        • memory/1460-55-0x0000000074D61000-0x0000000074D63000-memory.dmp

          Filesize

          8KB