Resubmissions

13-09-2021 16:55

210913-ve9k6aebc2 10

13-09-2021 16:05

210913-tjk8paeae9 10

Analysis

  • max time kernel
    252s
  • max time network
    373s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    13-09-2021 16:55

General

  • Target

    legislate 09.21.doc

  • Size

    69KB

  • MD5

    24001fc51ff0994fe9c43b4653918f5e

  • SHA1

    ae3b0439ed5fc269887d0094c8afac934e7d8980

  • SHA256

    f0fc164d92dfb1e3890153984d931ced828bb68b7aa6126980aded29720aea70

  • SHA512

    28c8d747b8e8d8629c192501cc418e42cf4fce94d77f03c67431bb985c48b152763afde1b178778b71dababe6a47a625c13cad3b865465b935866b5bf0df42fa

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Blocklisted process makes network request 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\legislate 09.21.doc" /o ""
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:776
    • C:\Windows\explorer.exe
      explorer caDePw.hta
      2⤵
      • Process spawned unexpected child process
      PID:1632
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2616
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\AppData\Local\Temp\caDePw.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
      • Blocklisted process makes network request
      • Suspicious use of WriteProcessMemory
      PID:660
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\System32\regsvr32.exe" c:\users\public\caDePw.jpg
        3⤵
          PID:3404

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Discovery

    System Information Discovery

    3
    T1082

    Query Registry

    2
    T1012

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\caDePw.hta
      MD5

      ce58d7ae8af9827a672b129d60c916d9

      SHA1

      498a881eb9e1960793654c7afc9406193e7c8db0

      SHA256

      b9e0a85002d438f8a8a9e13583324dfbe4b05cffcc07cc889dcc0fd9dd85ad84

      SHA512

      7bbe178df4f37dcadb4f90db2edb5d5b502ef36bf1a1a9cfc33ac4f0229faf5d10399a365010943ebb5411361de360a1e3cb54ba7d658b27fde686dc931f7cb1

    • \??\c:\users\public\caDePw.jpg
      MD5

      ad2372f8969c14ed5fb2a79b253c02cb

      SHA1

      35cee6b360c3e1689760ea7b84ea82cfb08d25f4

      SHA256

      1db3169007ffa529c4924d1d25458d365437029dcb9b3521787e44883513c20c

      SHA512

      fd6430478c55ba1d99e2d52b2500719181ffc1f4c475f14a38065856b594d52ee9e92d9431f7c06772c5de43549891da243879aac41d72e7af0f078268a484d5

    • memory/660-259-0x0000000000000000-mapping.dmp
    • memory/776-119-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp
      Filesize

      64KB

    • memory/776-116-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp
      Filesize

      64KB

    • memory/776-118-0x00007FFDF8960000-0x00007FFDFB483000-memory.dmp
      Filesize

      43.1MB

    • memory/776-122-0x00007FFDF4E90000-0x00007FFDF5F7E000-memory.dmp
      Filesize

      16.9MB

    • memory/776-123-0x00007FFDF2250000-0x00007FFDF4145000-memory.dmp
      Filesize

      31.0MB

    • memory/776-366-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp
      Filesize

      64KB

    • memory/776-117-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp
      Filesize

      64KB

    • memory/776-114-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp
      Filesize

      64KB

    • memory/776-365-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp
      Filesize

      64KB

    • memory/776-115-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp
      Filesize

      64KB

    • memory/776-363-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp
      Filesize

      64KB

    • memory/776-364-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp
      Filesize

      64KB

    • memory/1632-256-0x0000000000000000-mapping.dmp
    • memory/3404-287-0x0000000000000000-mapping.dmp