Analysis

  • max time kernel
    105s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 02:41

General

  • Target

    scan00465.pdf.exe

  • Size

    1.1MB

  • MD5

    9964435d5a0219c8145afd6dedda05e0

  • SHA1

    f2c56a7896e345f8178c2ecb0ead6d9a3b6461c3

  • SHA256

    b2a81f319b87bf35c7fb1ccac2e2fbf82ef6d3263ae2cb8fa5c242f43bfbfd39

  • SHA512

    818a13667d2cdd9c0019868bfc685f36068c54e05336f4b3ef827955e9defcfce6881f98f27e0ce812446409d34e7e053154f6358009f7b85a8bb2ba7cd836b8

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\8236ADF044\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 6:05:31 AM MassLogger Started: 5/21/2022 6:05:13 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.saritatravels.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    sumits%$321

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.

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2964
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BzSLPao" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2A9A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4256
    • C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe
      "{path}"
      2⤵
        PID:4264
      • C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.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:2352

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\scan00465.pdf.exe.log

      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • C:\Users\Admin\AppData\Local\Temp\tmp2A9A.tmp

      Filesize

      1KB

      MD5

      f786a3c6e2c8d55dcf420dc1c4d5bd05

      SHA1

      f089c434af744daade5045e2863c9b923421aa1b

      SHA256

      92433c7c668aff1872750bcf28925c689e338fa970712c1c04688e4ae9719b53

      SHA512

      71743083639bbedebd4352c50b9da46047b2da2b2838bff8a67c0101d768b382597556d1faa570607b7e75f6e22325ff97d44a38b2b5d939489343c928025663

    • memory/2352-164-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-139-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-168-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-652-0x0000000006F00000-0x0000000006F50000-memory.dmp

      Filesize

      320KB

    • memory/2352-651-0x0000000005840000-0x00000000058A6000-memory.dmp

      Filesize

      408KB

    • memory/2352-202-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-138-0x0000000000000000-mapping.dmp

    • memory/2352-166-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-200-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-142-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-144-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-146-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-198-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-150-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-152-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-154-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-156-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-158-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-160-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-162-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-148-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-196-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-194-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-170-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-172-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-174-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-176-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-178-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-180-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-182-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-184-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-186-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-188-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-190-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2352-192-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/2964-134-0x00000000091D0000-0x000000000926C000-memory.dmp

      Filesize

      624KB

    • memory/2964-133-0x0000000005030000-0x000000000503A000-memory.dmp

      Filesize

      40KB

    • memory/2964-130-0x00000000006C0000-0x00000000007DA000-memory.dmp

      Filesize

      1.1MB

    • memory/2964-131-0x0000000005630000-0x0000000005BD4000-memory.dmp

      Filesize

      5.6MB

    • memory/2964-132-0x0000000005080000-0x0000000005112000-memory.dmp

      Filesize

      584KB

    • memory/4256-135-0x0000000000000000-mapping.dmp

    • memory/4264-137-0x0000000000000000-mapping.dmp