Overview

overview

10

Static

static

doc2020081...sx.exe

windows7_x64

10

doc2020081...sx.exe

windows10-2004_x64

5

Analysis

  • max time kernel
    74s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 12:02

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General

  • Target

    doc20200812_00000187990091.xlsx.exe

  • Size

    924KB

  • MD5

    85b2da66be368bd544610451b942207f

  • SHA1

    19028b35c5c8f29491be9b571c67015a84d4f46a

  • SHA256

    35b6e2b8511ae0552a5de87abc510205a9d52a53ca6ed78b44299a31138475c8

  • SHA512

    c68bcb0a7b7153ff839da76db1cc7d1a235a4cb057440bcd45c4868c2bd2aaddb2ded25ca25792234a4173d1140def7992cadde201de50bd311cc03025204c42

Score
10/10
massloggercollectionransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\79FE0CC911\Log.txt

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 12:11:56 PM MassLogger Started: 5/21/2022 12:11:49 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\doc20200812_00000187990091.xlsx.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

    stealerspywaremasslogger
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 35 IoCs
    collection
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\doc20200812_00000187990091.xlsx.exe
    "C:\Users\Admin\AppData\Local\Temp\doc20200812_00000187990091.xlsx.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Users\Admin\AppData\Local\Temp\doc20200812_00000187990091.xlsx.exe
      "{path}"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1268

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • memory/1268-65-0x00000000004B2EAE-mapping.dmp
    Download
  • memory/1268-64-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

    Download
  • memory/1268-72-0x0000000004EF5000-0x0000000004F06000-memory.dmp
    Filesize

    68KB

    Download
  • memory/1268-70-0x0000000000BA0000-0x0000000000C18000-memory.dmp
    Filesize

    480KB

    Download
  • memory/1268-69-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

    Download
  • memory/1268-59-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

    Download
  • memory/1268-67-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

    Download
  • memory/1268-63-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

    Download
  • memory/1268-60-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

    Download
  • memory/1268-62-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

    Download
  • memory/1980-54-0x0000000001050000-0x000000000113E000-memory.dmp
    Filesize

    952KB

    Download
  • memory/1980-55-0x00000000768D1000-0x00000000768D3000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1980-58-0x0000000005930000-0x00000000059E8000-memory.dmp
    Filesize

    736KB

    Download
  • memory/1980-57-0x00000000056A0000-0x000000000574E000-memory.dmp
    Filesize

    696KB

    Download
  • memory/1980-56-0x0000000000710000-0x0000000000720000-memory.dmp
    Filesize

    64KB

    Download