Overview

overview

10

Static

static

8

LL52387-01-899.xlsm

windows7_x64

10

LL52387-01-899.xlsm

windows10_x64

10

Analysis

  • max time kernel
    299s
  • max time network
    274s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    19-07-2021 18:23

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    LL52387-01-899.xlsm

  • Size

    184KB

  • MD5

    ae7f19049c14e3462f0bd1df4d09595a

  • SHA1

    b4f4f45094812c1f487c1bb4dd36f3f2cc935a64

  • SHA256

    d9a85077c2f620c37242f96b1d5a2096403517b2818b36e1446e1e7fcc8c0ee8

  • SHA512

    e1d120aa77e9677019b34e466a82675a6e650022a252562ea780741eb470255173ac869ec9d72c9c5de87514453d1b924a92e4a098d160b87771792a6c2c4646

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 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\LL52387-01-899.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:664
    • C:\Windows\SYSTEM32\regsvr32.exe
      regsvr32 -silent ..\91919.dll
      2⤵
      • Process spawned unexpected child process
      PID:3328

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

Loading Replay Monitor...

Downloads

  • memory/664-114-0x00007FF6F1C60000-0x00007FF6F5216000-memory.dmp
    Filesize

    53.7MB

    Download
  • memory/664-115-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp
    Filesize

    64KB

    Download
  • memory/664-116-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp
    Filesize

    64KB

    Download
  • memory/664-117-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp
    Filesize

    64KB

    Download
  • memory/664-118-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp
    Filesize

    64KB

    Download
  • memory/664-121-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp
    Filesize

    64KB

    Download
  • memory/664-122-0x00007FFB9C9A0000-0x00007FFB9DA8E000-memory.dmp
    Filesize

    16.9MB

    Download
  • memory/664-123-0x00007FFB9AAA0000-0x00007FFB9C995000-memory.dmp
    Filesize

    31.0MB

    Download
  • memory/3328-258-0x0000000000000000-mapping.dmp
    Download