Analysis

  • max time kernel
    130s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 13:39

General

  • Target

    factura y datos bancarios.xls

  • Size

    750KB

  • MD5

    ed1586ecbcf764bbe528aea3b45e9cc2

  • SHA1

    7fa4ca6ba334938e362d35bb5339cf069973bdb7

  • SHA256

    8260b450e066630c181617a69f15df4fc663bfba8429b825ce36d23dd668b76b

  • SHA512

    ae94f2610f41e80833dccf9cf364c4d81854c578d741d57bf46f8b88e8cdb93c5a15297877e8cf25dc8ed978ff6ee319db11c171de9a117c3ef460ee9c817055

  • SSDEEP

    12288:OIN3rDx7XXXXXXXXXXXXUXXXXXXXqXXXXXXXX4TmFonIN3rDx7XXXXXXXXXXXXUw:Vr5XXXXXXXXXXXXUXXXXXXXqXXXXXXX9

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 1 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\factura y datos bancarios.xls"
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1424
  • 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:784
    • C:\Users\Public\vbc.exe
      "C:\Users\Public\vbc.exe"
      2⤵
      • Executes dropped EXE
      PID:1492

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Public\vbc.exe

    Filesize

    858KB

    MD5

    085c22c799c11af274a3b4bdcc8dd5d1

    SHA1

    00e568b254a1bf0ac84658178f71034cd6b4e5b4

    SHA256

    e2dded68006ccebb103489a909da0a06c2373581ce3631cedfdab8d376ec96b8

    SHA512

    c98448907580bd9445faef004d1bf430d958719e6982e6b6274635cfae9840495a0f7bbe12ff7e93cf72bd2e0960db428025736e27a34ad6610654ca367110dc

  • C:\Users\Public\vbc.exe

    Filesize

    858KB

    MD5

    085c22c799c11af274a3b4bdcc8dd5d1

    SHA1

    00e568b254a1bf0ac84658178f71034cd6b4e5b4

    SHA256

    e2dded68006ccebb103489a909da0a06c2373581ce3631cedfdab8d376ec96b8

    SHA512

    c98448907580bd9445faef004d1bf430d958719e6982e6b6274635cfae9840495a0f7bbe12ff7e93cf72bd2e0960db428025736e27a34ad6610654ca367110dc

  • \Users\Public\vbc.exe

    Filesize

    858KB

    MD5

    085c22c799c11af274a3b4bdcc8dd5d1

    SHA1

    00e568b254a1bf0ac84658178f71034cd6b4e5b4

    SHA256

    e2dded68006ccebb103489a909da0a06c2373581ce3631cedfdab8d376ec96b8

    SHA512

    c98448907580bd9445faef004d1bf430d958719e6982e6b6274635cfae9840495a0f7bbe12ff7e93cf72bd2e0960db428025736e27a34ad6610654ca367110dc

  • memory/1424-57-0x000000007259D000-0x00000000725A8000-memory.dmp

    Filesize

    44KB

  • memory/1424-58-0x0000000076151000-0x0000000076153000-memory.dmp

    Filesize

    8KB

  • memory/1424-60-0x000000007259D000-0x00000000725A8000-memory.dmp

    Filesize

    44KB

  • memory/1424-54-0x000000002FDD1000-0x000000002FDD4000-memory.dmp

    Filesize

    12KB

  • memory/1424-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1424-55-0x00000000715B1000-0x00000000715B3000-memory.dmp

    Filesize

    8KB

  • memory/1424-67-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1424-68-0x000000007259D000-0x00000000725A8000-memory.dmp

    Filesize

    44KB

  • memory/1492-62-0x0000000000000000-mapping.dmp

  • memory/1492-65-0x0000000001340000-0x000000000141C000-memory.dmp

    Filesize

    880KB

  • memory/1492-69-0x0000000000610000-0x0000000000628000-memory.dmp

    Filesize

    96KB