Analysis

  • max time kernel
    90s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:34

General

  • Target

    Request for new order.exe

  • Size

    875KB

  • MD5

    f6e60d4e007049b18de4fb87c38927c3

  • SHA1

    bba2fcd204840b1235dea163bbfeae3a59e3b763

  • SHA256

    495fdf3a95e1f56f9ec94bfdcdafe87a41be371947f24853c18cc98b24a6a281

  • SHA512

    a46e7a014a3dd577a5e9d7976845185c1f45c6c321bf8cd3c364576afbdccbe0fca7b0057f63e13416c81a60a0e63bce9c2e4ce5b26801cb179a4e6a6c62b5c3

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\0F48153F20\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.7.1 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 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: 5/21/2022 1:13:59 PM MassLogger Started: 5/21/2022 1:13:56 PM Interval: 9 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Request for new order.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.

  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • Modifies visibility of file extensions in Explorer 2 TTPs
  • 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.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Request for new order.exe
    "C:\Users\Admin\AppData\Local\Temp\Request for new order.exe"
    1⤵
    • Checks computer location settings
    • Accesses Microsoft Outlook profiles
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:1540
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IeeOQoeWj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp39DC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1316

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Hidden Files and Directories

1
T1158

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Hidden Files and Directories

1
T1158

Modify Registry

1
T1112

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\tmp39DC.tmp
    Filesize

    1KB

    MD5

    cdccc8dbf791b0078a748b10e2558158

    SHA1

    6c616f72de967421c2e0b476ef765124d530225a

    SHA256

    706d362715ff71842a0d22427de4c1298963179fcb55957a9fcd7ee1d9d54524

    SHA512

    10439f0cd83a47abfc87e02139264b9b777bdb0868df8ab833addfe907edf8a5ba265eb4a108b1cd289dc7f1fb2d6803d3a2b22f10dd28961f6365c15e9d927f

  • memory/1316-134-0x0000000000000000-mapping.dmp
  • memory/1540-130-0x0000000000D20000-0x0000000000E02000-memory.dmp
    Filesize

    904KB

  • memory/1540-131-0x0000000005D10000-0x00000000062B4000-memory.dmp
    Filesize

    5.6MB

  • memory/1540-132-0x0000000005800000-0x0000000005892000-memory.dmp
    Filesize

    584KB

  • memory/1540-133-0x0000000006740000-0x00000000067DC000-memory.dmp
    Filesize

    624KB

  • memory/1540-136-0x0000000008210000-0x0000000008276000-memory.dmp
    Filesize

    408KB

  • memory/1540-137-0x0000000008FE0000-0x0000000008FEA000-memory.dmp
    Filesize

    40KB

  • memory/1540-138-0x0000000009E20000-0x0000000009E70000-memory.dmp
    Filesize

    320KB