Analysis

  • max time kernel
    152s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 11:20

General

  • Target

    order 2020.pdf.exe

  • Size

    859KB

  • MD5

    fb20c05f12476e883d941268d6ff7ff8

  • SHA1

    0c32494e1b87f373392ae969b756947337771d0c

  • SHA256

    ce41031b56cdb4cf97a4c9e24b14ffd16672719457b5a394daa7a4ccb91591bf

  • SHA512

    640dfae0b0b20c785c556b5522ca66c6efd55c2f54d5d5d552ef1d85d15e38c0fabeca2796d34f1c8778ae456778a1802932bdc4c1ac7fca38147d028d69cd92

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\AEF946DCB4\Log.txt

Family

masslogger

Ransom Note
<|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.50 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 1:42:21 PM MassLogger Started: 5/21/2022 1:41:58 PM Interval: 1 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\order 2020.pdf.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.

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 35 IoCs
  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\order 2020.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\order 2020.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:880
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uSRQyICPZwKer" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE1A9.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1780
    • C:\Users\Admin\AppData\Local\Temp\order 2020.pdf.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:1112

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpE1A9.tmp
    Filesize

    1KB

    MD5

    bc61a7afe6e32fc606e4725d18d2758a

    SHA1

    fae7a2211494033cfdf24737d120d97b75a128d9

    SHA256

    9c45677d92991b72a33710b757616dd5ef5a3631a303f87371387ee2be4cc5fa

    SHA512

    c72d0ae07fe39ffb5b87a0a54f09c81439be5b2658ff01909cc39c84502ce85d00d38420d537a70e6d14229bc8fd206a84e26d8546bceda7b0cc6e2f01428291

  • memory/880-55-0x0000000000580000-0x000000000058A000-memory.dmp
    Filesize

    40KB

  • memory/880-56-0x00000000058A0000-0x0000000005960000-memory.dmp
    Filesize

    768KB

  • memory/880-57-0x0000000005C60000-0x0000000005D18000-memory.dmp
    Filesize

    736KB

  • memory/880-54-0x0000000000BF0000-0x0000000000CCE000-memory.dmp
    Filesize

    888KB

  • memory/1112-68-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

  • memory/1112-60-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

  • memory/1112-61-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

  • memory/1112-63-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

  • memory/1112-64-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

  • memory/1112-65-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

  • memory/1112-66-0x00000000004B2EDE-mapping.dmp
  • memory/1112-70-0x0000000000400000-0x00000000004B8000-memory.dmp
    Filesize

    736KB

  • memory/1112-71-0x0000000004400000-0x0000000004478000-memory.dmp
    Filesize

    480KB

  • memory/1112-72-0x0000000075711000-0x0000000075713000-memory.dmp
    Filesize

    8KB

  • memory/1112-73-0x0000000004525000-0x0000000004536000-memory.dmp
    Filesize

    68KB

  • memory/1780-58-0x0000000000000000-mapping.dmp