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Analysis

  • max time kernel
    103s
  • max time network
    113s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/03/2024, 14:14

General

  • Target

    CNN.exe

  • Size

    400KB

  • MD5

    d8ed33d452d8d7aea788c38df812c76f

  • SHA1

    6cb868e92badd1aed8b6fe2d6b56e76f04295383

  • SHA256

    bc166cd7e28545d2f52b1cce3f2eafc4824b4b4252440859cc4b7286e95bd8b5

  • SHA512

    6cbde610d30a0200b473f78542c9cb497702cc4b3240a9744b4bf53412a02049957495e785d53ad59faadeb128f3e4c939824569d00db69339463a8770f5f7b4

  • SSDEEP

    12288:B6niGh0/aP5R9XERpLR10qrRvnSWsNFGmOE7NF:B6R0/aXi1DV7s2m17b

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    jCXzqcP1 daniel 3116

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CNN.exe
    "C:\Users\Admin\AppData\Local\Temp\CNN.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4284
    • C:\Users\Admin\AppData\Local\Temp\CNN.exe
      "C:\Users\Admin\AppData\Local\Temp\CNN.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4084

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    42B

    MD5

    84cfdb4b995b1dbf543b26b86c863adc

    SHA1

    d2f47764908bf30036cf8248b9ff5541e2711fa2

    SHA256

    d8988d672d6915b46946b28c06ad8066c50041f6152a91d37ffa5cf129cc146b

    SHA512

    485f0ed45e13f00a93762cbf15b4b8f996553baa021152fae5aba051e3736bcd3ca8f4328f0e6d9e3e1f910c96c4a9ae055331123ee08e3c2ce3a99ac2e177ce

  • memory/4084-9-0x00000000058F0000-0x0000000005E94000-memory.dmp

    Filesize

    5.6MB

  • memory/4084-13-0x0000000006BB0000-0x0000000006C00000-memory.dmp

    Filesize

    320KB

  • memory/4084-3-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/4084-18-0x0000000005330000-0x0000000005340000-memory.dmp

    Filesize

    64KB

  • memory/4084-17-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/4084-16-0x0000000006D70000-0x0000000006D7A000-memory.dmp

    Filesize

    40KB

  • memory/4084-15-0x0000000006DE0000-0x0000000006E72000-memory.dmp

    Filesize

    584KB

  • memory/4084-11-0x00000000052B0000-0x0000000005316000-memory.dmp

    Filesize

    408KB

  • memory/4084-10-0x0000000005330000-0x0000000005340000-memory.dmp

    Filesize

    64KB

  • memory/4084-14-0x0000000006CA0000-0x0000000006D3C000-memory.dmp

    Filesize

    624KB

  • memory/4084-8-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/4284-0-0x0000000000620000-0x000000000068A000-memory.dmp

    Filesize

    424KB

  • memory/4284-2-0x0000000005070000-0x0000000005080000-memory.dmp

    Filesize

    64KB

  • memory/4284-7-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/4284-4-0x0000000004FD0000-0x0000000004FD1000-memory.dmp

    Filesize

    4KB

  • memory/4284-1-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB