Analysis

  • max time kernel
    222s
  • max time network
    211s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 13:39

General

  • Target

    Payment advice.xls

  • Size

    746KB

  • MD5

    bb3ef10c165da5d222d439b85a5b6933

  • SHA1

    ab1594706c065b893ab7fc9884c005411a03aa06

  • SHA256

    981a8d22f631f0002d741ccef8f825506e64f6f02f12082c6ea302a0f6855dd1

  • SHA512

    2c40323c0d29880e8368698f9a9e00f0e2adcdc386deaceb4a170999599b052b72aa31f2810cd72092569a61359985d4eb325e8ee8a89b0e5413302e64e80f16

  • SSDEEP

    12288:cdNqrDx7XXXXXXXXXXXXUXXXXXXXSXXXXXXXXxTmwqGdNqrDx7XXXXXXXXXXXXUH:Pr5XXXXXXXXXXXXUXXXXXXXSXXXXXXX0

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 2 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\Payment advice.xls"
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:1448
  • 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:1164
    • C:\Users\Public\vbc.exe
      "C:\Users\Public\vbc.exe"
      2⤵
      • Executes dropped EXE
      PID:1396

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Public\vbc.exe

    Filesize

    889KB

    MD5

    1096a121785454f09d62c92ced52734c

    SHA1

    3cf8fc4f455bf77a25c76b40acac673dd95f3db7

    SHA256

    67fb14904468fde0f4f39fdc45ddba00a74f3f4233783e6cd97ba5e5f5e89944

    SHA512

    c143cf6097752f92d51ca8f266257b1c997aa8b97dd90486ad9c1c62991f967ab8f5aac47e0befd4276d20a432d5a86b31208dc5bd916ba871819569dc29044f

  • C:\Users\Public\vbc.exe

    Filesize

    889KB

    MD5

    1096a121785454f09d62c92ced52734c

    SHA1

    3cf8fc4f455bf77a25c76b40acac673dd95f3db7

    SHA256

    67fb14904468fde0f4f39fdc45ddba00a74f3f4233783e6cd97ba5e5f5e89944

    SHA512

    c143cf6097752f92d51ca8f266257b1c997aa8b97dd90486ad9c1c62991f967ab8f5aac47e0befd4276d20a432d5a86b31208dc5bd916ba871819569dc29044f

  • \Users\Public\vbc.exe

    Filesize

    889KB

    MD5

    1096a121785454f09d62c92ced52734c

    SHA1

    3cf8fc4f455bf77a25c76b40acac673dd95f3db7

    SHA256

    67fb14904468fde0f4f39fdc45ddba00a74f3f4233783e6cd97ba5e5f5e89944

    SHA512

    c143cf6097752f92d51ca8f266257b1c997aa8b97dd90486ad9c1c62991f967ab8f5aac47e0befd4276d20a432d5a86b31208dc5bd916ba871819569dc29044f

  • \Users\Public\vbc.exe

    Filesize

    889KB

    MD5

    1096a121785454f09d62c92ced52734c

    SHA1

    3cf8fc4f455bf77a25c76b40acac673dd95f3db7

    SHA256

    67fb14904468fde0f4f39fdc45ddba00a74f3f4233783e6cd97ba5e5f5e89944

    SHA512

    c143cf6097752f92d51ca8f266257b1c997aa8b97dd90486ad9c1c62991f967ab8f5aac47e0befd4276d20a432d5a86b31208dc5bd916ba871819569dc29044f

  • memory/1396-63-0x0000000000000000-mapping.dmp

  • memory/1396-66-0x00000000008E0000-0x00000000009C4000-memory.dmp

    Filesize

    912KB

  • memory/1396-68-0x00000000005C0000-0x00000000005D8000-memory.dmp

    Filesize

    96KB

  • memory/1448-57-0x0000000071DED000-0x0000000071DF8000-memory.dmp

    Filesize

    44KB

  • memory/1448-58-0x0000000075441000-0x0000000075443000-memory.dmp

    Filesize

    8KB

  • memory/1448-60-0x0000000071DED000-0x0000000071DF8000-memory.dmp

    Filesize

    44KB

  • memory/1448-54-0x000000002F1F1000-0x000000002F1F4000-memory.dmp

    Filesize

    12KB

  • memory/1448-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1448-55-0x0000000070E01000-0x0000000070E03000-memory.dmp

    Filesize

    8KB