Analysis

  • max time kernel
    64s
  • max time network
    102s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    31-07-2020 12:18

General

  • Target

    SORUSTURMA 30.07.20.XLS.exe

  • Size

    1.1MB

  • MD5

    2a3545f4dfeba61a015cca0f4598b010

  • SHA1

    22cd26b8610a8eefad82a690491052bf8f2b128a

  • SHA256

    1b0e17e568860f443d28cd430f26925fbb7bc31ee55e287dd16be90274ed33c9

  • SHA512

    131fa817042caaec4c3079dfe7efbbaabb92e90db291226da9d741b8946582f223dc75fa9e32ce5502cc4f1f85ea580258bb616995d0137f7df9086d192d98ba

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\480F96756F\Log.txt

Family

masslogger

Ransom Note
<|| v2.3.0.0 ||> User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 10 Pro 64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Persocon Processor 2.5+ GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 7/31/2020 12:18:19 PM MassLogger Started: 7/31/2020 12:18:15 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\SORUSTURMA 30.07.20.XLS.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| USB Spread ||> 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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • MassLogger

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

  • 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 WriteProcessMemory 3 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

Processes

  • C:\Users\Admin\AppData\Local\Temp\SORUSTURMA 30.07.20.XLS.exe
    "C:\Users\Admin\AppData\Local\Temp\SORUSTURMA 30.07.20.XLS.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    • Suspicious behavior: MapViewOfSection
    PID:3104
    • C:\Users\Admin\AppData\Local\Temp\SORUSTURMA 30.07.20.XLS.exe
      "C:\Users\Admin\AppData\Local\Temp\SORUSTURMA 30.07.20.XLS.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious behavior: AddClipboardFormatListener
      PID:3648

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Collection

Data from Local System

1
T1005

Replay Monitor

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Downloads

  • memory/3648-0-0x0000000000400000-0x000000000059D000-memory.dmp
    Filesize

    1.6MB

  • memory/3648-1-0x000000000059AF50-mapping.dmp
  • memory/3648-2-0x0000000000400000-0x000000000059D000-memory.dmp
    Filesize

    1.6MB

  • memory/3648-3-0x0000000000400000-0x000000000059D000-memory.dmp
    Filesize

    1.6MB

  • memory/3648-4-0x0000000002470000-0x0000000002534000-memory.dmp
    Filesize

    784KB

  • memory/3648-5-0x0000000000862000-0x0000000000863000-memory.dmp
    Filesize

    4KB