Analysis

  • max time kernel
    139s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-12-2023 17:14

General

  • Target

    a91347e1855dc0c7cff41d9ae1d885d0ea43deeedf3a049c1b37007a65354b5c.exe

  • Size

    873KB

  • MD5

    347a5a729ed01d8bc366f02438b93251

  • SHA1

    74f566238f1ce6dd3158b4a341e8e52a0c6c5f8b

  • SHA256

    a91347e1855dc0c7cff41d9ae1d885d0ea43deeedf3a049c1b37007a65354b5c

  • SHA512

    c91847a97efdf89262b8b04485ec9843a6b64e7fc17c306015e42fb819bfeb4962e6531a2060b901492ab00a3c81aaece06bbddfcea728bdb2e2f47b2559eea8

  • SSDEEP

    12288:RdDc9F3nC0Py3gAhFZmmgGMbH2sTeguSuns8eU8AuEVAHQ3mSxuBTVw4:R26c2sTeg5unUUAhSxuBa4

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.goldeneye-group.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    0555845670

Signatures

  • AgentTesla

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

  • AgentTesla payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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
  • Suspicious use of SetThreadContext 1 IoCs
  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a91347e1855dc0c7cff41d9ae1d885d0ea43deeedf3a049c1b37007a65354b5c.exe
    "C:\Users\Admin\AppData\Local\Temp\a91347e1855dc0c7cff41d9ae1d885d0ea43deeedf3a049c1b37007a65354b5c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4240
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hRnfbveNcO" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBA3.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4988
    • C:\Users\Admin\AppData\Local\Temp\a91347e1855dc0c7cff41d9ae1d885d0ea43deeedf3a049c1b37007a65354b5c.exe
      "C:\Users\Admin\AppData\Local\Temp\a91347e1855dc0c7cff41d9ae1d885d0ea43deeedf3a049c1b37007a65354b5c.exe"
      2⤵
        PID:1080
      • C:\Users\Admin\AppData\Local\Temp\a91347e1855dc0c7cff41d9ae1d885d0ea43deeedf3a049c1b37007a65354b5c.exe
        "C:\Users\Admin\AppData\Local\Temp\a91347e1855dc0c7cff41d9ae1d885d0ea43deeedf3a049c1b37007a65354b5c.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:1548

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\a91347e1855dc0c7cff41d9ae1d885d0ea43deeedf3a049c1b37007a65354b5c.exe.log

      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • C:\Users\Admin\AppData\Local\Temp\tmpBA3.tmp

      Filesize

      1KB

      MD5

      414c0973e25240c1b1f19276caa6b590

      SHA1

      1f45223dfa354cb50e9f73bdbb54bad70f5e7154

      SHA256

      01ef26db1c03a10f903b5a65f3a97cbde2505ee88400db63e610d9c428e96fb8

      SHA512

      345db2fe3c5c983945355dfa82cbad2c129aafc2dd77d033c7f9831c49e86a47ae64574472c45020abfbaedc07fbc19193d5f2abca989e144de55384e3cc1951

    • memory/1548-23-0x00000000061C0000-0x00000000061D8000-memory.dmp

      Filesize

      96KB

    • memory/1548-28-0x0000000005680000-0x0000000005690000-memory.dmp

      Filesize

      64KB

    • memory/1548-17-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1548-27-0x0000000006480000-0x00000000064D0000-memory.dmp

      Filesize

      320KB

    • memory/1548-26-0x0000000005680000-0x0000000005690000-memory.dmp

      Filesize

      64KB

    • memory/1548-25-0x0000000074710000-0x0000000074EC0000-memory.dmp

      Filesize

      7.7MB

    • memory/1548-24-0x0000000006270000-0x00000000062D6000-memory.dmp

      Filesize

      408KB

    • memory/1548-22-0x0000000005680000-0x0000000005690000-memory.dmp

      Filesize

      64KB

    • memory/1548-21-0x0000000074710000-0x0000000074EC0000-memory.dmp

      Filesize

      7.7MB

    • memory/4240-4-0x0000000004F60000-0x0000000004F70000-memory.dmp

      Filesize

      64KB

    • memory/4240-11-0x0000000008390000-0x00000000083E0000-memory.dmp

      Filesize

      320KB

    • memory/4240-3-0x0000000004DF0000-0x0000000004E82000-memory.dmp

      Filesize

      584KB

    • memory/4240-10-0x0000000005DC0000-0x0000000005E72000-memory.dmp

      Filesize

      712KB

    • memory/4240-1-0x0000000074710000-0x0000000074EC0000-memory.dmp

      Filesize

      7.7MB

    • memory/4240-20-0x0000000074710000-0x0000000074EC0000-memory.dmp

      Filesize

      7.7MB

    • memory/4240-9-0x0000000004F60000-0x0000000004F70000-memory.dmp

      Filesize

      64KB

    • memory/4240-0-0x00000000002E0000-0x00000000003C0000-memory.dmp

      Filesize

      896KB

    • memory/4240-8-0x0000000074710000-0x0000000074EC0000-memory.dmp

      Filesize

      7.7MB

    • memory/4240-7-0x0000000004E90000-0x0000000004EA8000-memory.dmp

      Filesize

      96KB

    • memory/4240-6-0x0000000005180000-0x000000000521C000-memory.dmp

      Filesize

      624KB

    • memory/4240-5-0x0000000004DB0000-0x0000000004DBA000-memory.dmp

      Filesize

      40KB

    • memory/4240-2-0x0000000005300000-0x00000000058A4000-memory.dmp

      Filesize

      5.6MB