Analysis

  • max time kernel
    150s
  • max time network
    108s
  • platform
    windows7_x64
  • resource
    win7-20230705-en
  • resource tags

    arch:x64arch:x86image:win7-20230705-enlocale:en-usos:windows7-x64system
  • submitted
    09-07-2023 19:18

General

  • Target

    acb20554d68465b3b31193631.exe

  • Size

    646KB

  • MD5

    47512a6c07dd2415ee632f563f9b5ee2

  • SHA1

    f95945e1d3c5528f08977f854614d9fe1958b2c6

  • SHA256

    acb20554d68465b3b3119363102d14b65d6cb977835b7e7ad02aa3aa0c6cad56

  • SHA512

    74cecd8e73ebfc037c195e0216b1ca6dd8162aaf6ec9c7181e58d182e2935828b316399c5040a96c48c4f958e4fe6c443ac7a721ed7b538809f187d07b7a6226

  • SSDEEP

    12288:fqpdvDhH62MmgPFyVSLvHjgsMnqWv9OvhxD8+mGSDtSjakieH9yfhSz:YdvDcAwQVwvDgsMt9qEGSDtS2FewSz

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6217300642:AAEzEYz1TGioTKCP9A3FakpN8zVU2uG_u8w/

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.

  • Enumerates physical storage devices 1 TTPs

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

  • 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 39 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\acb20554d68465b3b31193631.exe
    "C:\Users\Admin\AppData\Local\Temp\acb20554d68465b3b31193631.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:2280
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mEcePJaBdBfjPm.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1456
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mEcePJaBdBfjPm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpADBE.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1576

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    1KB

    MD5

    e230164eee86081d092e0e7d2f775ff3

    SHA1

    f0078d1e397565d5defbb99edc010b7a221031fe

    SHA256

    b3615cfca95392841b5bde7e656a5926b063139b39ca8f0bfabcc9852d3c1d06

    SHA512

    8aa0033c07c5db65ac6acc1d5ef45438787897be73a2df5a9af98829672f7893dd37194547961578680141c4f46abf755657119d266a7fe10c8e8b9e105cd857

  • memory/1456-68-0x0000000002680000-0x00000000026C0000-memory.dmp

    Filesize

    256KB

  • memory/1456-69-0x0000000002680000-0x00000000026C0000-memory.dmp

    Filesize

    256KB

  • memory/1456-70-0x0000000002680000-0x00000000026C0000-memory.dmp

    Filesize

    256KB

  • memory/2280-54-0x0000000000A40000-0x0000000000AE8000-memory.dmp

    Filesize

    672KB

  • memory/2280-55-0x00000000044A0000-0x00000000044E0000-memory.dmp

    Filesize

    256KB

  • memory/2280-56-0x0000000000570000-0x0000000000580000-memory.dmp

    Filesize

    64KB

  • memory/2280-57-0x0000000000580000-0x000000000058C000-memory.dmp

    Filesize

    48KB

  • memory/2280-58-0x0000000004EC0000-0x0000000004F2A000-memory.dmp

    Filesize

    424KB

  • memory/2280-64-0x0000000002360000-0x0000000002392000-memory.dmp

    Filesize

    200KB

  • memory/2280-65-0x0000000004E70000-0x0000000004EA0000-memory.dmp

    Filesize

    192KB