Overview

overview

10

Static

static

8

19QC-439850.xlsm

windows7_x64

10

19QC-439850.xlsm

windows10_x64

10

Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    19-07-2021 18:55

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General

  • Target

    19QC-439850.xlsm

  • Size

    184KB

  • MD5

    d38cdbc95726b6c6a6525d252c9666a6

  • SHA1

    723db655e25e4add7fbf193da27f00d4976c620c

  • SHA256

    45c86e476165f51397d864cb46a8897f340ef5becd5576c6561d25dcc3a03140

  • SHA512

    98443e9ca42dfeec7b428a0cc5fbe4e16742444ae80f13e149f8dbbb071625e81be6269f35a29c8609ffbeca6117107daa7c5ba3d18d619230ba3015daa37cb6

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\19QC-439850.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:568
    • C:\Windows\SYSTEM32\regsvr32.exe
      regsvr32 -silent ..\91919.dll
      2⤵
      • Process spawned unexpected child process
      PID:1824

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/568-114-0x00007FF6EE2E0000-0x00007FF6F1896000-memory.dmp
    Filesize

    53.7MB

    Download
  • memory/568-115-0x00007FFC8B990000-0x00007FFC8B9A0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/568-116-0x00007FFC8B990000-0x00007FFC8B9A0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/568-117-0x00007FFC8B990000-0x00007FFC8B9A0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/568-118-0x00007FFC8B990000-0x00007FFC8B9A0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/568-121-0x00007FFC8B990000-0x00007FFC8B9A0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/568-122-0x00007FFCABD30000-0x00007FFCACE1E000-memory.dmp
    Filesize

    16.9MB

    Download
  • memory/568-123-0x00007FFCA9BF0000-0x00007FFCABAE5000-memory.dmp
    Filesize

    31.0MB

    Download
  • memory/1824-257-0x0000000000000000-mapping.dmp
    Download