Analysis

  • max time kernel
    100s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    08/02/2023, 18:37

General

  • Target

    Payment Advice.xls

  • Size

    1.0MB

  • MD5

    16f65a65c5308ad13f1f145044e15e5e

  • SHA1

    6b27042de64ae9becbb9bb8908dd856883a5e8cc

  • SHA256

    9d1689d8abadacc148c6f7c60ee0f45a82bd42a71d61a28c77262418dd23cee7

  • SHA512

    27de205b7f51898c2e3008990e4955ff19dbe2f09b69b2321595d2ffbb5aa9b396a790891c68e6c7f7f7c0627f4eabfc5065be067ba08403ec0623aa8e003137

  • SSDEEP

    24576:8FeHs5hwrCFemUMdQ14SKdbIZkO+PH3vvwdf:guW8CpUdn5Zx+Pmf

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 6 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Program crash 1 IoCs
  • 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 AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 8 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\Payment Advice.xls"
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1384
  • 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:1716
    • C:\Users\Public\vbc.exe
      "C:\Users\Public\vbc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1172
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 1196
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:1684

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Public\vbc.exe

    Filesize

    24KB

    MD5

    7ebf7d10757260b6666233d212869cd6

    SHA1

    80dbcb65bc104b60ceae19790c2eec58f1977746

    SHA256

    5c215b927e55ecd01db0d6f4231a873085871503cff180f9476fdf46ea70327d

    SHA512

    b031090eb08242b87903ab94e89f7921ce47a4f3a0c7d15b2d9f1a0541b74fe2f48e785da8a1cee2cd9b47f500fabe70599a38a0f200b7623a34705ae14cbcfe

  • C:\Users\Public\vbc.exe

    Filesize

    24KB

    MD5

    7ebf7d10757260b6666233d212869cd6

    SHA1

    80dbcb65bc104b60ceae19790c2eec58f1977746

    SHA256

    5c215b927e55ecd01db0d6f4231a873085871503cff180f9476fdf46ea70327d

    SHA512

    b031090eb08242b87903ab94e89f7921ce47a4f3a0c7d15b2d9f1a0541b74fe2f48e785da8a1cee2cd9b47f500fabe70599a38a0f200b7623a34705ae14cbcfe

  • \Users\Public\vbc.exe

    Filesize

    24KB

    MD5

    7ebf7d10757260b6666233d212869cd6

    SHA1

    80dbcb65bc104b60ceae19790c2eec58f1977746

    SHA256

    5c215b927e55ecd01db0d6f4231a873085871503cff180f9476fdf46ea70327d

    SHA512

    b031090eb08242b87903ab94e89f7921ce47a4f3a0c7d15b2d9f1a0541b74fe2f48e785da8a1cee2cd9b47f500fabe70599a38a0f200b7623a34705ae14cbcfe

  • \Users\Public\vbc.exe

    Filesize

    24KB

    MD5

    7ebf7d10757260b6666233d212869cd6

    SHA1

    80dbcb65bc104b60ceae19790c2eec58f1977746

    SHA256

    5c215b927e55ecd01db0d6f4231a873085871503cff180f9476fdf46ea70327d

    SHA512

    b031090eb08242b87903ab94e89f7921ce47a4f3a0c7d15b2d9f1a0541b74fe2f48e785da8a1cee2cd9b47f500fabe70599a38a0f200b7623a34705ae14cbcfe

  • \Users\Public\vbc.exe

    Filesize

    24KB

    MD5

    7ebf7d10757260b6666233d212869cd6

    SHA1

    80dbcb65bc104b60ceae19790c2eec58f1977746

    SHA256

    5c215b927e55ecd01db0d6f4231a873085871503cff180f9476fdf46ea70327d

    SHA512

    b031090eb08242b87903ab94e89f7921ce47a4f3a0c7d15b2d9f1a0541b74fe2f48e785da8a1cee2cd9b47f500fabe70599a38a0f200b7623a34705ae14cbcfe

  • \Users\Public\vbc.exe

    Filesize

    24KB

    MD5

    7ebf7d10757260b6666233d212869cd6

    SHA1

    80dbcb65bc104b60ceae19790c2eec58f1977746

    SHA256

    5c215b927e55ecd01db0d6f4231a873085871503cff180f9476fdf46ea70327d

    SHA512

    b031090eb08242b87903ab94e89f7921ce47a4f3a0c7d15b2d9f1a0541b74fe2f48e785da8a1cee2cd9b47f500fabe70599a38a0f200b7623a34705ae14cbcfe

  • \Users\Public\vbc.exe

    Filesize

    24KB

    MD5

    7ebf7d10757260b6666233d212869cd6

    SHA1

    80dbcb65bc104b60ceae19790c2eec58f1977746

    SHA256

    5c215b927e55ecd01db0d6f4231a873085871503cff180f9476fdf46ea70327d

    SHA512

    b031090eb08242b87903ab94e89f7921ce47a4f3a0c7d15b2d9f1a0541b74fe2f48e785da8a1cee2cd9b47f500fabe70599a38a0f200b7623a34705ae14cbcfe

  • \Users\Public\vbc.exe

    Filesize

    24KB

    MD5

    7ebf7d10757260b6666233d212869cd6

    SHA1

    80dbcb65bc104b60ceae19790c2eec58f1977746

    SHA256

    5c215b927e55ecd01db0d6f4231a873085871503cff180f9476fdf46ea70327d

    SHA512

    b031090eb08242b87903ab94e89f7921ce47a4f3a0c7d15b2d9f1a0541b74fe2f48e785da8a1cee2cd9b47f500fabe70599a38a0f200b7623a34705ae14cbcfe

  • memory/1172-64-0x0000000000240000-0x000000000024C000-memory.dmp

    Filesize

    48KB

  • memory/1384-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1384-55-0x0000000071CA1000-0x0000000071CA3000-memory.dmp

    Filesize

    8KB

  • memory/1384-54-0x000000002F4C1000-0x000000002F4C4000-memory.dmp

    Filesize

    12KB

  • memory/1384-57-0x0000000072C8D000-0x0000000072C98000-memory.dmp

    Filesize

    44KB

  • memory/1384-58-0x0000000076DC1000-0x0000000076DC3000-memory.dmp

    Filesize

    8KB

  • memory/1384-72-0x0000000072C8D000-0x0000000072C98000-memory.dmp

    Filesize

    44KB

  • memory/1384-73-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1384-74-0x0000000072C8D000-0x0000000072C98000-memory.dmp

    Filesize

    44KB