Overview

overview

10

Static

static

8

19072021-L...8.xlsm

windows7_x64

10

19072021-L...8.xlsm

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    19-07-2021 18:55

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General

  • Target

    19072021-Lect-348.xlsm

  • Size

    184KB

  • MD5

    d1175555f18d52d6a564e55724322215

  • SHA1

    b4577aac9e4955b08d287eda7318bd31ae914912

  • SHA256

    6085c924953fc6df458ae7475746d83ad094adc24ee3198692dcfdbfe9d6a656

  • SHA512

    f89ad0055fe4959ece0dfbcba354dbc3a8944df9e40df069f22164455fb5d9176d653f8530e13c45cf4d6e310c330d9b37ce3a442b39ed0300fd57aa224f38bb

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\19072021-Lect-348.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:636
    • C:\Windows\SYSTEM32\regsvr32.exe
      regsvr32 -silent ..\91919.dll
      2⤵
      • Process spawned unexpected child process
      PID:3504

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/636-114-0x00007FF718240000-0x00007FF71B7F6000-memory.dmp
    Filesize

    53.7MB

    Download
  • memory/636-115-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/636-116-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/636-117-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/636-118-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/636-122-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/636-121-0x00007FF8CD3E0000-0x00007FF8CE4CE000-memory.dmp
    Filesize

    16.9MB

    Download
  • memory/636-123-0x00007FF8CB4E0000-0x00007FF8CD3D5000-memory.dmp
    Filesize

    31.0MB

    Download
  • memory/3504-259-0x0000000000000000-mapping.dmp
    Download