Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-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 (1270) 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\3df6e06d7f6270903dda0e9e0da7ff6e.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:288
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\3df6e06d7f6270903dda0e9e0da7ff6e.dll,#1
      2⤵
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:748
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        PID:1908
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:1432
  • 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:2028

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Network Service Scanning

1
T1046

Replay Monitor

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Downloads

  • C:\WINDOWS\mssecsvc.exe
    Filesize

    3MB

    MD5

    83b00f6b894ff7bb0f087fb29d940ae0

    SHA1

    b11684cfcb4f81a5997a1e67444f38e4de06a342

    SHA256

    eca5e284a55c0b83ce4ae7eccbd54632775ab02ed34c8456459612721ddba9d7

    SHA512

    c319e4eb06b67eda1bc06c8c5e0146d8b8866b04180e37ae72e7642befc0cc0cd641297e990fa1657fc7d26a55c78ce5325deb2cd958de02e7980c23e6121f1e

  • C:\Windows\mssecsvc.exe
    Filesize

    3MB

    MD5

    83b00f6b894ff7bb0f087fb29d940ae0

    SHA1

    b11684cfcb4f81a5997a1e67444f38e4de06a342

    SHA256

    eca5e284a55c0b83ce4ae7eccbd54632775ab02ed34c8456459612721ddba9d7

    SHA512

    c319e4eb06b67eda1bc06c8c5e0146d8b8866b04180e37ae72e7642befc0cc0cd641297e990fa1657fc7d26a55c78ce5325deb2cd958de02e7980c23e6121f1e

  • C:\Windows\mssecsvc.exe
    Filesize

    3MB

    MD5

    83b00f6b894ff7bb0f087fb29d940ae0

    SHA1

    b11684cfcb4f81a5997a1e67444f38e4de06a342

    SHA256

    eca5e284a55c0b83ce4ae7eccbd54632775ab02ed34c8456459612721ddba9d7

    SHA512

    c319e4eb06b67eda1bc06c8c5e0146d8b8866b04180e37ae72e7642befc0cc0cd641297e990fa1657fc7d26a55c78ce5325deb2cd958de02e7980c23e6121f1e

  • C:\Windows\tasksche.exe
    Filesize

    3MB

    MD5

    d2deffafa88eed37f5263b395767fd0b

    SHA1

    cf96cad2f905f022e59d1345fe211984dae32321

    SHA256

    71431f1a52800c3b1c0f6e7de9241089e0864d1e059b89504a15c3d2565bde66

    SHA512

    832d7bf0ba6425e265cf7e203ae4facfce4a19e07353fd69d036c557f1b1561a29dea4abc1fce0032bdd8b6cc97cd3fb7fbe0d2684d8df0edb2fb6b5dfbe4b25

  • memory/748-54-0x0000000000000000-mapping.dmp
  • memory/748-55-0x0000000075B11000-0x0000000075B13000-memory.dmp
    Filesize

    8KB

  • memory/1908-56-0x0000000000000000-mapping.dmp
  • memory/1908-64-0x0000000000400000-0x0000000000A72000-memory.dmp
    Filesize

    6MB

  • memory/2028-63-0x0000000000400000-0x0000000000A72000-memory.dmp
    Filesize

    6MB

  • memory/2028-65-0x0000000000400000-0x0000000000A72000-memory.dmp
    Filesize

    6MB