Overview

overview

10

Static

static

8

subscripti...3.xlsb

windows7_x64

10

subscripti...3.xlsb

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    14/04/2021, 16:02

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    subscription_1618334083.xlsb
  • Size 182KB
  • Sample210414-v1rt39h2m2
  • SHA256 68ef8ffa46a0d0ea1a981ad7bcfbaf1c7ad2680ddfac2a2d4b0822a23aaf4247
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 20 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\subscription_1618334083.xlsb"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4656
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c certutil -decode %PUBLIC%\31927.dpi %PUBLIC%\31927.pdo && rundll32 %PUBLIC%\31927.pdo,DF1
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:3056
      • C:\Windows\system32\certutil.exe
        certutil -decode C:\Users\Public\31927.dpi C:\Users\Public\31927.pdo
        3⤵
          PID:3848
        • C:\Windows\system32\rundll32.exe
          rundll32 C:\Users\Public\31927.pdo,DF1
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4304
          • C:\Windows\SysWOW64\rundll32.exe
            rundll32 C:\Users\Public\31927.pdo,DF1
            4⤵
            • Loads dropped DLL
            PID:4308
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4308 -s 812
              5⤵
              • Program crash
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4344

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/4308-186-0x0000000000E00000-0x0000000000EAE000-memory.dmp
          Download

          memory/4656-118-0x00007FFA38500000-0x00007FFA38510000-memory.dmp
          Download

          memory/4656-119-0x00007FFA38500000-0x00007FFA38510000-memory.dmp
          Download

          memory/4656-122-0x00007FFA588C0000-0x00007FFA599AE000-memory.dmp
          Download

          memory/4656-123-0x000001CDAEEA0000-0x000001CDB0D95000-memory.dmp
          Download

          memory/4656-114-0x00007FF79B800000-0x00007FF79EDB6000-memory.dmp
          Download

          memory/4656-117-0x00007FFA38500000-0x00007FFA38510000-memory.dmp
          Download

          memory/4656-116-0x00007FFA38500000-0x00007FFA38510000-memory.dmp
          Download

          memory/4656-115-0x00007FFA38500000-0x00007FFA38510000-memory.dmp
          Download