Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-09-2022 19:55

General

  • Target

    3df6e06d7f6270903dda0e9e0da7ff6e.dll

  • Size

    5MB

  • MD5

    3df6e06d7f6270903dda0e9e0da7ff6e

  • SHA1

    29dcb3b3b9f9e5f6679ba6fa32531d4d92f567fb

  • SHA256

    51c5225c4bf368296754697e310f1583300b5e85748be40dca5ff5647df4f8dc

  • SHA512

    0cf97a1361b5b73569c4497958091b298c2c29c85ad734078165fbe0cb86c9776bd33463dbd7ecda8d147544d771b1ca6b8751bfc8135cb70eb257f211de3e94

  • SSDEEP

    49152:snjQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SA:M8qPoBhz1aRxcSUDk36SA

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3301) amount of remote hosts ⋅ 1 TTPs

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

  • Executes dropped EXE ⋅ 3 IoCs
  • Creates a large amount of network flows ⋅ 1 TTPs

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

  • Drops file in Windows directory ⋅ 2 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\3df6e06d7f6270903dda0e9e0da7ff6e.dll,#1
    Suspicious use of WriteProcessMemory
    PID:4952
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\3df6e06d7f6270903dda0e9e0da7ff6e.dll,#1
      Drops file in Windows directory
      Suspicious use of WriteProcessMemory
      PID:1368
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        Executes dropped EXE
        Drops file in Windows directory
        PID:2184
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          Executes dropped EXE
          PID:4092
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    Executes dropped EXE
    PID:2108

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

          Execution

            Exfiltration

              Impact

                Initial Access

                  Lateral Movement

                    Persistence

                      Privilege Escalation

                        Replay Monitor

                        00:00 00:00

                        Downloads

                        • C:\WINDOWS\mssecsvc.exe
                          MD5

                          83b00f6b894ff7bb0f087fb29d940ae0

                          SHA1

                          b11684cfcb4f81a5997a1e67444f38e4de06a342

                          SHA256

                          eca5e284a55c0b83ce4ae7eccbd54632775ab02ed34c8456459612721ddba9d7

                          SHA512

                          c319e4eb06b67eda1bc06c8c5e0146d8b8866b04180e37ae72e7642befc0cc0cd641297e990fa1657fc7d26a55c78ce5325deb2cd958de02e7980c23e6121f1e

                        • C:\Windows\mssecsvc.exe
                          MD5

                          83b00f6b894ff7bb0f087fb29d940ae0

                          SHA1

                          b11684cfcb4f81a5997a1e67444f38e4de06a342

                          SHA256

                          eca5e284a55c0b83ce4ae7eccbd54632775ab02ed34c8456459612721ddba9d7

                          SHA512

                          c319e4eb06b67eda1bc06c8c5e0146d8b8866b04180e37ae72e7642befc0cc0cd641297e990fa1657fc7d26a55c78ce5325deb2cd958de02e7980c23e6121f1e

                        • C:\Windows\mssecsvc.exe
                          MD5

                          83b00f6b894ff7bb0f087fb29d940ae0

                          SHA1

                          b11684cfcb4f81a5997a1e67444f38e4de06a342

                          SHA256

                          eca5e284a55c0b83ce4ae7eccbd54632775ab02ed34c8456459612721ddba9d7

                          SHA512

                          c319e4eb06b67eda1bc06c8c5e0146d8b8866b04180e37ae72e7642befc0cc0cd641297e990fa1657fc7d26a55c78ce5325deb2cd958de02e7980c23e6121f1e

                        • C:\Windows\tasksche.exe
                          MD5

                          d2deffafa88eed37f5263b395767fd0b

                          SHA1

                          cf96cad2f905f022e59d1345fe211984dae32321

                          SHA256

                          71431f1a52800c3b1c0f6e7de9241089e0864d1e059b89504a15c3d2565bde66

                          SHA512

                          832d7bf0ba6425e265cf7e203ae4facfce4a19e07353fd69d036c557f1b1561a29dea4abc1fce0032bdd8b6cc97cd3fb7fbe0d2684d8df0edb2fb6b5dfbe4b25

                        • memory/1368-132-0x0000000000000000-mapping.dmp
                        • memory/2108-140-0x0000000000400000-0x0000000000A72000-memory.dmp
                        • memory/2108-141-0x0000000000400000-0x0000000000A72000-memory.dmp
                        • memory/2184-133-0x0000000000000000-mapping.dmp
                        • memory/2184-136-0x0000000000400000-0x0000000000A72000-memory.dmp
                        • memory/2184-139-0x0000000000400000-0x0000000000A72000-memory.dmp