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Analysis

  • max time kernel
    104s
  • max time network
    32s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    23/03/2023, 06:10

General

  • Target

    Document for clearance.xls

  • Size

    1.1MB

  • MD5

    d5d7ea5bd2503fa0a3efd0c83196b69a

  • SHA1

    5e1f2f6ada8234994fcd652a1e9d6db13ee2e94b

  • SHA256

    febe551bb0804e8707e938b42d4d31143525cd024782251bb043cb0691e7d105

  • SHA512

    766fb7673c22f9f080b8199e24f691c64b97c4f516a13356faef166d2b63437b9636f5c2f5474fef65c22c1c44b1527f6747e7eebd2f5d9b781f23cf59440f16

  • SSDEEP

    24576:mLKIWQmmav30x1+MXU6aTf+MXUw3bV4+MXUJ3bVMMm29V0a3zlD:mLKdQmmQ303+MX6b+MXL3bV4+MXm3bVX

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\Document for clearance.xls"
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1484
  • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    • Launches Equation Editor
    • Suspicious use of WriteProcessMemory
    PID:1752
    • C:\Users\Public\vbc.exe
      "C:\Users\Public\vbc.exe"
      2⤵
      • Executes dropped EXE
      PID:1056

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.MSO\28768EBC.emf

    Filesize

    95KB

    MD5

    5c5096a41b5f3123b1e8264324eeabc3

    SHA1

    320b8cee357d1d0ed19f63630b0079130657d987

    SHA256

    fbe8acf84d4f45e5ef05212edd3296d5a06eeae3db3bdb9665299d86e1a6be72

    SHA512

    d0979e804b6ece6f35a10e86cd9f0ee09d273a7bd81311c6bc1f4da35f689514d1fded9e22748a50577d51cd04e3028d5151b53fd2c4b0477acae45dfb3b77d3

  • C:\Users\Public\vbc.exe

    Filesize

    901KB

    MD5

    8301d3d1a602b5aa7e72a57fb20d1a57

    SHA1

    0196e13d7e1ff5d71c994a70bc4585af52d890a0

    SHA256

    ad58ce24f9e160b6ace93452b01909c30d77643dfd8445ef27d8862442455b03

    SHA512

    2f99e3532af335c719100c12c0b67dc4ea507790c8fa17c8eea3a0dd10e6423f4be7a2eaddac2aa104f7ff62312036423b65d7ac5ffa57a6a870be6c2108e83a

  • C:\Users\Public\vbc.exe

    Filesize

    901KB

    MD5

    8301d3d1a602b5aa7e72a57fb20d1a57

    SHA1

    0196e13d7e1ff5d71c994a70bc4585af52d890a0

    SHA256

    ad58ce24f9e160b6ace93452b01909c30d77643dfd8445ef27d8862442455b03

    SHA512

    2f99e3532af335c719100c12c0b67dc4ea507790c8fa17c8eea3a0dd10e6423f4be7a2eaddac2aa104f7ff62312036423b65d7ac5ffa57a6a870be6c2108e83a

  • C:\Users\Public\vbc.exe

    Filesize

    901KB

    MD5

    8301d3d1a602b5aa7e72a57fb20d1a57

    SHA1

    0196e13d7e1ff5d71c994a70bc4585af52d890a0

    SHA256

    ad58ce24f9e160b6ace93452b01909c30d77643dfd8445ef27d8862442455b03

    SHA512

    2f99e3532af335c719100c12c0b67dc4ea507790c8fa17c8eea3a0dd10e6423f4be7a2eaddac2aa104f7ff62312036423b65d7ac5ffa57a6a870be6c2108e83a

  • \Users\Public\vbc.exe

    Filesize

    901KB

    MD5

    8301d3d1a602b5aa7e72a57fb20d1a57

    SHA1

    0196e13d7e1ff5d71c994a70bc4585af52d890a0

    SHA256

    ad58ce24f9e160b6ace93452b01909c30d77643dfd8445ef27d8862442455b03

    SHA512

    2f99e3532af335c719100c12c0b67dc4ea507790c8fa17c8eea3a0dd10e6423f4be7a2eaddac2aa104f7ff62312036423b65d7ac5ffa57a6a870be6c2108e83a

  • \Users\Public\vbc.exe

    Filesize

    901KB

    MD5

    8301d3d1a602b5aa7e72a57fb20d1a57

    SHA1

    0196e13d7e1ff5d71c994a70bc4585af52d890a0

    SHA256

    ad58ce24f9e160b6ace93452b01909c30d77643dfd8445ef27d8862442455b03

    SHA512

    2f99e3532af335c719100c12c0b67dc4ea507790c8fa17c8eea3a0dd10e6423f4be7a2eaddac2aa104f7ff62312036423b65d7ac5ffa57a6a870be6c2108e83a

  • \Users\Public\vbc.exe

    Filesize

    901KB

    MD5

    8301d3d1a602b5aa7e72a57fb20d1a57

    SHA1

    0196e13d7e1ff5d71c994a70bc4585af52d890a0

    SHA256

    ad58ce24f9e160b6ace93452b01909c30d77643dfd8445ef27d8862442455b03

    SHA512

    2f99e3532af335c719100c12c0b67dc4ea507790c8fa17c8eea3a0dd10e6423f4be7a2eaddac2aa104f7ff62312036423b65d7ac5ffa57a6a870be6c2108e83a

  • \Users\Public\vbc.exe

    Filesize

    901KB

    MD5

    8301d3d1a602b5aa7e72a57fb20d1a57

    SHA1

    0196e13d7e1ff5d71c994a70bc4585af52d890a0

    SHA256

    ad58ce24f9e160b6ace93452b01909c30d77643dfd8445ef27d8862442455b03

    SHA512

    2f99e3532af335c719100c12c0b67dc4ea507790c8fa17c8eea3a0dd10e6423f4be7a2eaddac2aa104f7ff62312036423b65d7ac5ffa57a6a870be6c2108e83a

  • \Users\Public\vbc.exe

    Filesize

    901KB

    MD5

    8301d3d1a602b5aa7e72a57fb20d1a57

    SHA1

    0196e13d7e1ff5d71c994a70bc4585af52d890a0

    SHA256

    ad58ce24f9e160b6ace93452b01909c30d77643dfd8445ef27d8862442455b03

    SHA512

    2f99e3532af335c719100c12c0b67dc4ea507790c8fa17c8eea3a0dd10e6423f4be7a2eaddac2aa104f7ff62312036423b65d7ac5ffa57a6a870be6c2108e83a

  • memory/1056-83-0x0000000000D30000-0x0000000000E18000-memory.dmp

    Filesize

    928KB

  • memory/1056-84-0x0000000004B50000-0x0000000004B90000-memory.dmp

    Filesize

    256KB

  • memory/1056-85-0x0000000004B50000-0x0000000004B90000-memory.dmp

    Filesize

    256KB

  • memory/1484-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1484-91-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB