Analysis

  • max time kernel
    125s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-06-2024 17:10

General

  • Target

    2cfd4cbfe7bedf67791eb6370d29d4651b172d0094d7530bb76858293f8045eb.exe

  • Size

    166KB

  • MD5

    47267596e9278466493d0766e0bc58d5

  • SHA1

    69152978f99129c76dd45a99dad857732d658cc1

  • SHA256

    2cfd4cbfe7bedf67791eb6370d29d4651b172d0094d7530bb76858293f8045eb

  • SHA512

    949339b509895f0259c379b1aa0342f94db88814112232eccd901249baf92c7d9a605f0a18a1473ac49d34d311ae1d133bdba28d8d376ac46d0ab172b818e098

  • SSDEEP

    768:5ypDwT1ZBRerxpg4pXDOTJznXiBEKClD8:opDwT1ZCrnDpXDOZnEEKClo

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    162.254.34.31
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    ABwuRZS5Mjh5

Extracted

Family

purecrypter

C2

http://103.20.235.174/min/Bponzkhw.wav

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Gathers network information 2 TTPs 2 IoCs

    Uses commandline utility to view network configuration.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2cfd4cbfe7bedf67791eb6370d29d4651b172d0094d7530bb76858293f8045eb.exe
    "C:\Users\Admin\AppData\Local\Temp\2cfd4cbfe7bedf67791eb6370d29d4651b172d0094d7530bb76858293f8045eb.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4948
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ipconfig /release
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1748
      • C:\Windows\SysWOW64\ipconfig.exe
        ipconfig /release
        3⤵
        • Gathers network information
        PID:4028
    • C:\Users\Admin\AppData\Local\Temp\2cfd4cbfe7bedf67791eb6370d29d4651b172d0094d7530bb76858293f8045eb.exe
      "C:\Users\Admin\AppData\Local\Temp\2cfd4cbfe7bedf67791eb6370d29d4651b172d0094d7530bb76858293f8045eb.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2432
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ipconfig /renew
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3144
      • C:\Windows\SysWOW64\ipconfig.exe
        ipconfig /renew
        3⤵
        • Gathers network information
        PID:4404
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3772,i,1305347165619645738,15927664461101562802,262144 --variations-seed-version --mojo-platform-channel-handle=4120 /prefetch:8
    1⤵
      PID:232

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2432-4901-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/2432-4900-0x0000000000420000-0x0000000000460000-memory.dmp

      Filesize

      256KB

    • memory/2432-4902-0x0000000004AB0000-0x0000000004B16000-memory.dmp

      Filesize

      408KB

    • memory/2432-4903-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/2432-4905-0x0000000005FE0000-0x0000000006030000-memory.dmp

      Filesize

      320KB

    • memory/2432-4908-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/2432-4907-0x0000000006180000-0x000000000618A000-memory.dmp

      Filesize

      40KB

    • memory/2432-4906-0x00000000060D0000-0x000000000616C000-memory.dmp

      Filesize

      624KB

    • memory/4948-61-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-33-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-5-0x0000000007390000-0x0000000007422000-memory.dmp

      Filesize

      584KB

    • memory/4948-13-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-21-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-37-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-67-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-65-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-69-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-63-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-59-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-57-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-53-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-51-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-49-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-47-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-46-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-43-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-3-0x00000000070C0000-0x00000000072F2000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-41-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-55-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-39-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-35-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-4-0x00000000078A0000-0x0000000007E44000-memory.dmp

      Filesize

      5.6MB

    • memory/4948-29-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-27-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-25-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-23-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-19-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-17-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-15-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-11-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-9-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-31-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-7-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-6-0x00000000070C0000-0x00000000072EC000-memory.dmp

      Filesize

      2.2MB

    • memory/4948-4892-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/4948-4893-0x0000000005730000-0x000000000579C000-memory.dmp

      Filesize

      432KB

    • memory/4948-4894-0x00000000057A0000-0x00000000057EC000-memory.dmp

      Filesize

      304KB

    • memory/4948-4895-0x000000007479E000-0x000000007479F000-memory.dmp

      Filesize

      4KB

    • memory/4948-4896-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/4948-4897-0x0000000005B00000-0x0000000005B54000-memory.dmp

      Filesize

      336KB

    • memory/4948-2-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB

    • memory/4948-1-0x0000000000360000-0x0000000000390000-memory.dmp

      Filesize

      192KB

    • memory/4948-0-0x000000007479E000-0x000000007479F000-memory.dmp

      Filesize

      4KB

    • memory/4948-4904-0x0000000074790000-0x0000000074F40000-memory.dmp

      Filesize

      7.7MB