Overview

overview

10

Static

static

8

Client_doc...9.xlsm

windows7_x64

10

Client_doc...9.xlsm

windows10_x64

10

Analysis

  • max time kernel
    144s
  • max time network
    140s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    23-07-2021 16:11

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General

  • Target

    Client_documents_access_1793-1029.xlsm

  • Size

    85KB

  • MD5

    e05574d2a2b00fc7b9862ad631ce3315

  • SHA1

    b55f7933231453358bd4e0a033a8030595412b60

  • SHA256

    6cb9eff2c03a7064a655a6117cb62d4bf8694a6fab10588cac60b0781d60ca4d

  • SHA512

    065d815ac37c355098345392f4ffe1793317e6cd55640f05229c2f1211b9a0dd0941844e7234a27986f8b6a48cb8de1aa883440c23be91450f6b1da9cb9c1468

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://162.248.227.39/first.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\Client_documents_access_1793-1029.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3912
    • C:\Windows\SYSTEM32\regsvr32.exe
      regsvr32 -silent ..\yeieowur.dll
      2⤵
      • Process spawned unexpected child process
      PID:2128

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/2128-255-0x0000000000000000-mapping.dmp
    Download
  • memory/3912-114-0x00007FF6158B0000-0x00007FF618E66000-memory.dmp
    Filesize

    53.7MB

    Download
  • memory/3912-115-0x00007FF8CDBE0000-0x00007FF8CDBF0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3912-116-0x00007FF8CDBE0000-0x00007FF8CDBF0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3912-117-0x00007FF8CDBE0000-0x00007FF8CDBF0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3912-118-0x00007FF8CDBE0000-0x00007FF8CDBF0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3912-122-0x00007FF8CDBE0000-0x00007FF8CDBF0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/3912-121-0x00007FF8EE870000-0x00007FF8EF95E000-memory.dmp
    Filesize

    16.9MB

    Download
  • memory/3912-123-0x000001CDA6F70000-0x000001CDA8E65000-memory.dmp
    Filesize

    31.0MB

    Download