Analysis

  • max time kernel
    131s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:29

General

  • Target

    4f7ce008febd9fe224c7a7cec7d8abf8c0db3611fd14d8aca135041d21d2b45c.exe

  • Size

    899KB

  • MD5

    226ccf305c0971c6634d956809ee618f

  • SHA1

    55615741a7d8f84f7edaaf0c5bc851944532f98d

  • SHA256

    4f7ce008febd9fe224c7a7cec7d8abf8c0db3611fd14d8aca135041d21d2b45c

  • SHA512

    2e0a60a33409a36cc3703fefcaa64f3c7907e53736bc549c5c7f3c93e99d0aba1e4fcbbaa82fe301724f7f93e47fc5f12957452baee9829966193a568d22a80c

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\F95B724EDE\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.5.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 Location: United States OS: Microsoft Windows 10 Pro64bit CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 3:10:38 PM MassLogger Started: 5/21/2022 3:10:00 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\4f7ce008febd9fe224c7a7cec7d8abf8c0db3611fd14d8aca135041d21d2b45c.exe MassLogger Melt: false MassLogger Exit after delivery: true As Administrator: True Processes:

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.mkontakt.az
  • Port:
    587
  • Username:
    testing@mkontakt.az
  • Password:
    Onyeoba111

Signatures

  • MassLogger

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

  • MassLogger Main Payload 32 IoCs
  • 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 18 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4f7ce008febd9fe224c7a7cec7d8abf8c0db3611fd14d8aca135041d21d2b45c.exe
    "C:\Users\Admin\AppData\Local\Temp\4f7ce008febd9fe224c7a7cec7d8abf8c0db3611fd14d8aca135041d21d2b45c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4212
    • C:\Users\Admin\AppData\Local\Temp\4f7ce008febd9fe224c7a7cec7d8abf8c0db3611fd14d8aca135041d21d2b45c.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:1492

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\4f7ce008febd9fe224c7a7cec7d8abf8c0db3611fd14d8aca135041d21d2b45c.exe.log
    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/1492-164-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-192-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-646-0x00000000083F0000-0x0000000008440000-memory.dmp
    Filesize

    320KB

  • memory/1492-645-0x0000000005D20000-0x0000000005D86000-memory.dmp
    Filesize

    408KB

  • memory/1492-135-0x0000000000000000-mapping.dmp
  • memory/1492-136-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-162-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-140-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-142-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-144-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-146-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-148-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-150-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-152-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-154-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-156-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-158-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-166-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-138-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-198-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-160-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-168-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-170-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-172-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-174-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-176-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-178-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-180-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-182-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-184-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-186-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-188-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-190-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-194-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1492-196-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/4212-130-0x0000000000540000-0x0000000000626000-memory.dmp
    Filesize

    920KB

  • memory/4212-132-0x0000000004EB0000-0x0000000004F42000-memory.dmp
    Filesize

    584KB

  • memory/4212-134-0x0000000007BD0000-0x0000000007C6C000-memory.dmp
    Filesize

    624KB

  • memory/4212-133-0x0000000005190000-0x000000000519A000-memory.dmp
    Filesize

    40KB

  • memory/4212-131-0x00000000053C0000-0x0000000005964000-memory.dmp
    Filesize

    5.6MB