Resubmissions

27-12-2022 14:34

221227-rxqn8afa54 10

27-12-2022 14:34

221227-rxfh9afa52 10

25-12-2022 11:46

221225-nxcwksee8w 10

Analysis

  • max time kernel
    53s
  • max time network
    115s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    25-12-2022 11:46

General

  • Target

    f227b51c6347b3acf53b8e54e84864c2c3e4ef973226bc517f0f9852dbc1bfcc.exe

  • Size

    1014KB

  • MD5

    26c27aabc7f503c9c77f004f4b909c2b

  • SHA1

    c01b1e1eb7a532539b8626409eec93c5f7e86243

  • SHA256

    f227b51c6347b3acf53b8e54e84864c2c3e4ef973226bc517f0f9852dbc1bfcc

  • SHA512

    0182a98ab6dfec078f24a20972e42d652f8a8acc2ae707aea63c0b30dea97618843affee13de2e8bc772d9d38efd54dc219c7cdceaf2309482381b165e03259f

  • SSDEEP

    12288:Wd4l68YdxM7KcQF8SYyKQiQGarSYSODjyVKSqmtDUHILYacpf+mDXttarruVBDUt:448888KcM86viiLz8KSqeDUHILY9

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f227b51c6347b3acf53b8e54e84864c2c3e4ef973226bc517f0f9852dbc1bfcc.exe
    "C:\Users\Admin\AppData\Local\Temp\f227b51c6347b3acf53b8e54e84864c2c3e4ef973226bc517f0f9852dbc1bfcc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:956
    • C:\Users\Admin\AppData\Local\Temp\f227b51c6347b3acf53b8e54e84864c2c3e4ef973226bc517f0f9852dbc1bfcc.exe
      "C:\Users\Admin\AppData\Local\Temp\f227b51c6347b3acf53b8e54e84864c2c3e4ef973226bc517f0f9852dbc1bfcc.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1864

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/956-54-0x00000000009B0000-0x0000000000AB4000-memory.dmp

    Filesize

    1.0MB

  • memory/956-55-0x0000000075491000-0x0000000075493000-memory.dmp

    Filesize

    8KB

  • memory/956-56-0x0000000000510000-0x0000000000520000-memory.dmp

    Filesize

    64KB

  • memory/956-57-0x00000000008B0000-0x00000000008BA000-memory.dmp

    Filesize

    40KB

  • memory/956-58-0x00000000055D0000-0x0000000005668000-memory.dmp

    Filesize

    608KB

  • memory/956-59-0x0000000004090000-0x00000000040F0000-memory.dmp

    Filesize

    384KB

  • memory/1864-60-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1864-61-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1864-63-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1864-64-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1864-65-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1864-68-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/1864-70-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB