Analysis

  • max time kernel
    94s
  • max time network
    99s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 12:31

General

  • Target

    DATASHEET.exe

  • Size

    899KB

  • MD5

    226ccf305c0971c6634d956809ee618f

  • SHA1

    55615741a7d8f84f7edaaf0c5bc851944532f98d

  • SHA256

    4f7ce008febd9fe224c7a7cec7d8abf8c0db3611fd14d8aca135041d21d2b45c

  • SHA512

    2e0a60a33409a36cc3703fefcaa64f3c7907e53736bc549c5c7f3c93e99d0aba1e4fcbbaa82fe301724f7f93e47fc5f12957452baee9829966193a568d22a80c

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\AEF946DCB4\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 7 Ultimate 64bit CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 3:11:25 PM MassLogger Started: 5/21/2022 3:11:05 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\DATASHEET.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 15 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 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DATASHEET.exe
    "C:\Users\Admin\AppData\Local\Temp\DATASHEET.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:780
    • C:\Users\Admin\AppData\Local\Temp\DATASHEET.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:1644

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

  • memory/780-54-0x0000000000DF0000-0x0000000000ED6000-memory.dmp
    Filesize

    920KB

  • memory/780-55-0x0000000076531000-0x0000000076533000-memory.dmp
    Filesize

    8KB

  • memory/780-56-0x00000000004A0000-0x00000000004BC000-memory.dmp
    Filesize

    112KB

  • memory/780-57-0x0000000005800000-0x00000000058B8000-memory.dmp
    Filesize

    736KB

  • memory/1644-58-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-59-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-61-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-62-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-63-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-64-0x00000000004ABAAE-mapping.dmp
  • memory/1644-66-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-68-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-70-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-72-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-74-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-76-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-78-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-80-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-82-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-84-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-86-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-88-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-90-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-92-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-94-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-96-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-98-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-100-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-102-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-104-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-106-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-108-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-110-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-112-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-114-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-116-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-118-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-120-0x0000000000400000-0x00000000004B0000-memory.dmp
    Filesize

    704KB

  • memory/1644-577-0x00000000005B0000-0x00000000005F4000-memory.dmp
    Filesize

    272KB

  • memory/1644-579-0x0000000004E35000-0x0000000004E46000-memory.dmp
    Filesize

    68KB

  • memory/1644-580-0x00000000043F0000-0x0000000004404000-memory.dmp
    Filesize

    80KB