Resubmissions

09-12-2021 18:02

211209-wmrwraeefm 10

09-12-2021 13:54

211209-q7h7fsdecm 10

07-12-2021 10:30

211207-mjt29sggaq 10

Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    07-12-2021 10:30

General

  • Target

    inv856837915323.xlsb

  • Size

    79KB

  • MD5

    a8b05f0781be741710594ec8616540c7

  • SHA1

    fac6283173d33ac0ec42603afbf7c0af18bf7bee

  • SHA256

    30a27f834183c2c94d01d18838bed678f78aa07a09ba5cd1aec57416ef18a43e

  • SHA512

    907ce01a72b4cd2909f6647f4b555119ac03d52bafd06c10417e065c2653338f95fb491658a553137616e4cc5bb82f42df4eb8485c2435c7d20cf29e07bdac42

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 7 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\inv856837915323.xlsb
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1652
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic process call create "explorer C:\ProgramData\IeVgaFSGRUxioNf.vbs"
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of AdjustPrivilegeToken
      PID:880
  • C:\Windows\explorer.exe
    explorer C:\ProgramData\IeVgaFSGRUxioNf.vbs
    1⤵
    • Process spawned unexpected child process
    PID:1812
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\ProgramData\IeVgaFSGRUxioNf.vbs"
      2⤵
        PID:1764

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\IeVgaFSGRUxioNf.vbs

      MD5

      b82665a44b5a93f559f6113a36014821

      SHA1

      0bcf4e4a4108a2441f0e6a3ad6ef6dab564495cf

      SHA256

      97fa2bd6c47708026aac44870d85307753405d520370d67eeedabffe91e032b0

      SHA512

      6bd18225dfe26b78ffa1910c34f397312d5698049abbf4d646b51966d6237c4afb39d6ba058ffb04e831b3bcc13e781146f681f6a9843cdf0c6e9d51d2fe27b7

    • memory/880-58-0x0000000000000000-mapping.dmp

    • memory/1652-55-0x000000002F8F1000-0x000000002F8F4000-memory.dmp

      Filesize

      12KB

    • memory/1652-56-0x0000000071311000-0x0000000071313000-memory.dmp

      Filesize

      8KB

    • memory/1652-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1652-59-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1764-63-0x0000000000000000-mapping.dmp

    • memory/1812-60-0x000007FEFBB21000-0x000007FEFBB23000-memory.dmp

      Filesize

      8KB