Overview

overview

10

Static

static

8

Document931215825.xls

windows7_x64

1

Document931215825.xls

windows10_x64

10

Resubmissions

18/12/2020, 16:31

201218-rf4f27wdbs8

14/12/2020, 11:33

201214-1gy4fl2smn8

12/12/2020, 16:18

201212-45avfhl4rx10

11/12/2020, 11:08

201211-d57rtvtlna10

11/12/2020, 10:19

201211-zh128fnl2n10

Analysis

  • max time kernel
    139s
  • max time network
    148s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    11/12/2020, 10:19

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Report Analysis Logs

General

  • Target
    Document931215825.xls
  • Size 53KB
  • Sample201211-zh128fnl2n
  • SHA256 829419a788104ec45e82487738be2779a83cac1b65bfc9343e351e75cfa49f5e
  • 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
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Windows directory 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 use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 12 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\Document931215825.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:540
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\IntelCompany\JIOLAS.RRTTOOKK,DllRegisterServer
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:2336
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32 C:\IntelCompany\JIOLAS.RRTTOOKK,DllRegisterServer
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:2340
        • C:\Windows\system32\wermgr.exe
          C:\Windows\system32\wermgr.exe
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2756

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/540-2-0x00007FF9A71F0000-0x00007FF9A7827000-memory.dmp
        Download

        memory/2340-9-0x0000000000610000-0x0000000000649000-memory.dmp
        Download

        memory/2340-10-0x0000000010000000-0x0000000010038000-memory.dmp
        Download