Overview

overview

10

Static

static

k1f0Acf29eG3FzJ.exe

windows7_x64

10

k1f0Acf29eG3FzJ.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    123s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 13:01

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General

  • Target

    k1f0Acf29eG3FzJ.exe

  • Size

    908KB

  • MD5

    4638aa710733a365c1265303da13c0b3

  • SHA1

    31a9b61bd7301b93eef5fb117ae16dfe3f00bed3

  • SHA256

    5caa7e9eb486ca9161d410e9fe1dc4074c3b0c66f8d6cd05ab5ae6dd35837c5a

  • SHA512

    bfb9b61cc9c28e35307bafbf63e19379fcb307b02652decd4d08f89e8dc28cc56b1a50f95648760ea26167a51b57bc79ed40bc57432cf4d7cdc0bd174993bee3

Score
10/10
massloggercollectionransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\19E979543A\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.7.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.13 Location: United States Windows OS: Microsoft Windows 10 Pro64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/20/2022 3:05:46 PM MassLogger Started: 5/20/2022 3:05:41 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\k1f0Acf29eG3FzJ.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Signatures

  • MassLogger

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

    stealerspywaremasslogger
  • MassLogger Main Payload 1 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • Checks computer location settings 2 TTPs 2 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 18 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
  • 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.

    persistence
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\k1f0Acf29eG3FzJ.exe
    "C:\Users\Admin\AppData\Local\Temp\k1f0Acf29eG3FzJ.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4076
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fnYKykWpGW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4205.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:228
    • C:\Users\Admin\AppData\Local\Temp\k1f0Acf29eG3FzJ.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:4304

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
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

  • C:\Users\Admin\AppData\Local\Temp\tmp4205.tmp
    Filesize

    1KB

    MD5

    3bcd1e8a876364968df65bac94a371e4

    SHA1

    5c76bf27bc07982e4e5cb96a5be3654cefd87c0e

    SHA256

    a1d176717459d4c817ae265ed3633816cfa2dec0d6fde3671176380f74f42e6e

    SHA512

    c81565e1a8217828133f48a74cc8aaad76f56684967fed3ead2f86f6a5f32c9fc93321044e15e0fad5c8383c1783429c9a3bb322216b2f280c355af9233e324b

    Download Submit
  • memory/228-134-0x0000000000000000-mapping.dmp
    Download
  • memory/4076-130-0x0000000000830000-0x000000000091A000-memory.dmp
    Filesize

    936KB

    Download
  • memory/4076-131-0x0000000007ED0000-0x0000000008474000-memory.dmp
    Filesize

    5.6MB

    Download
  • memory/4076-132-0x0000000007B40000-0x0000000007BD2000-memory.dmp
    Filesize

    584KB

    Download
  • memory/4076-133-0x0000000007C80000-0x0000000007D1C000-memory.dmp
    Filesize

    624KB

    Download
  • memory/4304-136-0x0000000000000000-mapping.dmp
    Download
  • memory/4304-137-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

    Download
  • memory/4304-138-0x0000000005120000-0x0000000005186000-memory.dmp
    Filesize

    408KB

    Download
  • memory/4304-139-0x0000000006E20000-0x0000000006E2A000-memory.dmp
    Filesize

    40KB

    Download
  • memory/4304-140-0x00000000081C0000-0x0000000008210000-memory.dmp
    Filesize

    320KB

    Download