Analysis

  • max time kernel
    113s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 02:08

General

  • Target

    f66ba3c720e0df70977904953fb0f359eddcc621703aec51d1d3f16e099a2816.exe

  • Size

    1.3MB

  • MD5

    4dd93076bfc75f76a248882ac422a31a

  • SHA1

    53d904be35b2e8c7de03c20f6e54067046b2ce57

  • SHA256

    f66ba3c720e0df70977904953fb0f359eddcc621703aec51d1d3f16e099a2816

  • SHA512

    11e9f6b84cfd5403424c7da60011581fc591dbbf8d5f8ad02f0d1b920edfc3ed06dec27ba254a57bab3b036e65ab9af5713b3764447ce89cdaca328bfc9024b3

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.6.0 ################################################################# ### 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: 5/21/2022 5:17:04 AM MassLogger Started: 5/21/2022 5:16:58 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\f66ba3c720e0df70977904953fb0f359eddcc621703aec51d1d3f16e099a2816.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    cruizjamesvhjkl@

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 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.

  • 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
  • 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: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f66ba3c720e0df70977904953fb0f359eddcc621703aec51d1d3f16e099a2816.exe
    "C:\Users\Admin\AppData\Local\Temp\f66ba3c720e0df70977904953fb0f359eddcc621703aec51d1d3f16e099a2816.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1424
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hUwUwo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD39C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3488
    • C:\Users\Admin\AppData\Local\Temp\f66ba3c720e0df70977904953fb0f359eddcc621703aec51d1d3f16e099a2816.exe
      "{path}"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4372

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

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\tmpD39C.tmp
    Filesize

    1KB

    MD5

    f110adb6c4fe60af49f8edc13085aacc

    SHA1

    a0d1351a0b1ab97a980f8a6cdbdfd92f3850e5f9

    SHA256

    0d30157ea5bc759453567b6801bdabd62727e59421796aac20a6171e3ba5feb4

    SHA512

    2848f0692ccd58d339d25e64f4bfb13ed6dd213f29a48e1283e86f5e0b66ae4ac699a4f999b5354fe7349a24caa7f360d5c1b13943ea35056fcbc24a406046cf

  • memory/1424-130-0x00000000004B0000-0x00000000005FE000-memory.dmp
    Filesize

    1.3MB

  • memory/1424-131-0x0000000007470000-0x000000000750C000-memory.dmp
    Filesize

    624KB

  • memory/1424-132-0x0000000007510000-0x00000000075A2000-memory.dmp
    Filesize

    584KB

  • memory/1424-133-0x00000000080D0000-0x0000000008674000-memory.dmp
    Filesize

    5.6MB

  • memory/3488-134-0x0000000000000000-mapping.dmp
  • memory/4372-163-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-169-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-139-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-141-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-143-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-145-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-147-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-149-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-151-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-153-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-155-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-157-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-159-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-161-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-136-0x0000000000000000-mapping.dmp
  • memory/4372-165-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-167-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-137-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-171-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-173-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-175-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-177-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-179-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-181-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-183-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-185-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-187-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-189-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-191-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-193-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-195-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-197-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-199-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4372-654-0x00000000058D0000-0x0000000005936000-memory.dmp
    Filesize

    408KB

  • memory/4372-655-0x00000000070B0000-0x00000000070BA000-memory.dmp
    Filesize

    40KB

  • memory/4372-656-0x00000000070D0000-0x0000000007120000-memory.dmp
    Filesize

    320KB