Overview

overview

10

Static

static

8

Register 2...6.xlsm

windows7_x64

10

Register 2...6.xlsm

windows10_x64

10

Analysis

  • max time kernel
    148s
  • max time network
    158s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    19-07-2021 18:35

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Report Analysis Logs

General

  • Target

    Register 2948 -69086.xlsm

  • Size

    184KB

  • MD5

    071084a63d40622cb858d6330af3ffd0

  • SHA1

    a1fb4785f9ea2329153897e7833d35d67e11d6ac

  • SHA256

    d68a1ed53bcc16ba9e7cff9326ff3f327038daddf071ec567f8d79dfed851352

  • SHA512

    dad242f4cd254722f024bbdadf7fd53d1fa83500e02cd6657a57d44dc26477a80fa20ce983e898e476652c23551c6392136bcef40cc52c480526d2f61815da43

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://fourstars.cyou/1.php

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • 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 FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 2 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\Register 2948 -69086.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:584
    • C:\Windows\SYSTEM32\regsvr32.exe
      regsvr32 -silent ..\91919.dll
      2⤵
      • Process spawned unexpected child process
      PID:2568

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • memory/584-114-0x00007FF79E200000-0x00007FF7A17B6000-memory.dmp
    Filesize

    53.7MB

    Download
  • memory/584-115-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp
    Filesize

    64KB

    Download
  • memory/584-116-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp
    Filesize

    64KB

    Download
  • memory/584-117-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp
    Filesize

    64KB

    Download
  • memory/584-118-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp
    Filesize

    64KB

    Download
  • memory/584-121-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp
    Filesize

    64KB

    Download
  • memory/584-122-0x00007FFA0EBD0000-0x00007FFA0FCBE000-memory.dmp
    Filesize

    16.9MB

    Download
  • memory/584-123-0x00007FFA0CCD0000-0x00007FFA0EBC5000-memory.dmp
    Filesize

    31.0MB

    Download
  • memory/2568-263-0x0000000000000000-mapping.dmp
    Download