Analysis

  • max time kernel
    93s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-10-2024 13:57

General

  • Target

    installer.exe

  • Size

    18.7MB

  • MD5

    9cd846ea50a04e3d926b8adbfdcb9dff

  • SHA1

    1c2d7e2e672e8aa64853f8a2b6b0ff7e97117465

  • SHA256

    156cc4ef32137f0f9a8df03c32c1b0b506c72355c08bbf6f8c07279a53a7922b

  • SHA512

    1b60385c3df8a331f3824954532262d63c7218459e1d7241b37c652520510e68d300d620b31f74492942a705434c740f336c44482ddebc1c04db60e4b50a933f

  • SSDEEP

    98304:eI0CniMX77777773773W/lcCjQI7wnHsv8pMCTzSAhmyhJONL+L8JCE8fh9mdJOW:Nii77777773773WICRPZQ2isH

Malware Config

Extracted

Family

meduza

C2

79.137.202.152

Attributes
  • anti_dbg

    true

  • anti_vm

    false

  • build_name

    OurOld2

  • extensions

    .txt;.doc;.docx;.pdf;.xls;.xlsx;.log;.db;.sqlite

  • grabber_max_size

    1.048576e+06

  • port

    15666

  • self_destruct

    true

Signatures

  • Meduza

    Meduza is a crypto wallet and info stealer written in C++.

  • Meduza Stealer payload 2 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 5 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • NTFS ADS 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\installer.exe
    "C:\Users\Admin\AppData\Local\Temp\installer.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4040
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" "-Command" "$cmd = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('QWRkLU1wUHJlZmVyZW5jZSAtRXhjbHVzaW9uUGF0aCAiQzpcVXNlcnNcQWRtaW5cbWl2bXdoY3Vwd2VhemtleiI=')); Invoke-Expression $cmd"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2124
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" "-Command" "$cmd = [System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('QWRkLU1wUHJlZmVyZW5jZSAtRXhjbHVzaW9uUGF0aCAiQzpcVXNlcnNcQWRtaW5cbWl2bXdoY3Vwd2VhemtlelxjbWR2ZGxidHFtcHJjZWhuLmV4ZSI=')); Invoke-Expression $cmd"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4780
    • C:\Users\Admin\mivmwhcupweazkez\cmdvdlbtqmprcehn.exe
      "C:\Users\Admin\mivmwhcupweazkez\cmdvdlbtqmprcehn.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • NTFS ADS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4452
      • C:\Users\Admin\mivmwhcupweazkez\cmdvdlbtqmprcehn.exe
        "C:\Users\Admin\mivmwhcupweazkez\cmdvdlbtqmprcehn.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:2028
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /C ping 1.1.1.1 -n 1 -w 3000 > Nul & Del /f /q "C:\Users\Admin\mivmwhcupweazkez\cmdvdlbtqmprcehn.exe"
          4⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:3100
          • C:\Windows\system32\PING.EXE
            ping 1.1.1.1 -n 1 -w 3000
            5⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:3452

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    2f57fde6b33e89a63cf0dfdd6e60a351

    SHA1

    445bf1b07223a04f8a159581a3d37d630273010f

    SHA256

    3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

    SHA512

    42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    1KB

    MD5

    943da3515041f7c71525e312d911913c

    SHA1

    2446005e5b56737da64a6a497d31a797b2693fdf

    SHA256

    6e49351f1ce9b95090398ebf429b51ddbc261883bb149451602c7df53e1d0b70

    SHA512

    a51ecfd8779febe16809f947ccd4ddf7082361d518fa3b5b229f705de7897e853b590e225083a48df894d1141c43131db93c33540a3eb45998dd7561e19f150e

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ml0sosjh.cun.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\mivmwhcupweazkez\cmdvdlbtqmprcehn.exe

    Filesize

    2.6MB

    MD5

    98e56fc6276f5ea11ed37de5b40116d3

    SHA1

    882fd2c385eeaffec3881b3262de638ff912f276

    SHA256

    9006378885c4a84699ad0f90dbe7579969e3a1b41f6fd334c4e440d30a15d063

    SHA512

    978c3f3e5e866db2cc59a3474a6b75291b3eba44d445887c2afd50218dce776a650822eb67118481e62411b02102c7e49a1dc99db507d4cca59d0253b5b1a19b

  • C:\Users\Admin\mivmwhcupweazkez\cmdvdlbtqmprcehn.exe:a.dll

    Filesize

    1.4MB

    MD5

    217fadc021c5e644e590d0ec31a27702

    SHA1

    074b2b10054362719e9d5dc346fbbd4607ee6e13

    SHA256

    a05dbdb3c4e03ade632d6b338d683839fe068a3328654d3e066c944b18971f5d

    SHA512

    466f5e7034268df4112cda2c330e81747b1cc5e76f6f5f6359290506c750da4fff2f198e2087523470c709951758d38d1a9f0490edb332c667b1952e931f24fa

  • memory/2028-46-0x0000000140000000-0x000000014013B000-memory.dmp

    Filesize

    1.2MB

  • memory/2028-44-0x0000000140000000-0x000000014013B000-memory.dmp

    Filesize

    1.2MB

  • memory/2124-16-0x00007FFCC9B30000-0x00007FFCCA5F1000-memory.dmp

    Filesize

    10.8MB

  • memory/2124-17-0x00007FFCC9B30000-0x00007FFCCA5F1000-memory.dmp

    Filesize

    10.8MB

  • memory/2124-13-0x00007FFCC9B30000-0x00007FFCCA5F1000-memory.dmp

    Filesize

    10.8MB

  • memory/2124-12-0x00007FFCC9B30000-0x00007FFCCA5F1000-memory.dmp

    Filesize

    10.8MB

  • memory/2124-11-0x0000021F39FE0000-0x0000021F3A002000-memory.dmp

    Filesize

    136KB

  • memory/2124-1-0x00007FFCC9B33000-0x00007FFCC9B35000-memory.dmp

    Filesize

    8KB

  • memory/4040-18-0x0000000000400000-0x0000000000DF4000-memory.dmp

    Filesize

    10.0MB

  • memory/4040-0-0x0000000000400000-0x0000000000DF4000-memory.dmp

    Filesize

    10.0MB

  • memory/4040-36-0x0000000000400000-0x0000000000DF4000-memory.dmp

    Filesize

    10.0MB

  • memory/4040-19-0x0000000000400000-0x0000000000DF4000-memory.dmp

    Filesize

    10.0MB

  • memory/4452-37-0x00007FF79AB90000-0x00007FF79AE36000-memory.dmp

    Filesize

    2.6MB

  • memory/4452-47-0x00007FF79AB90000-0x00007FF79AE36000-memory.dmp

    Filesize

    2.6MB

  • memory/4452-43-0x00007FFCD9210000-0x00007FFCD9374000-memory.dmp

    Filesize

    1.4MB