Analysis

  • max time kernel
    120s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    29-03-2024 07:30

General

  • Target

    TBC#01 Rev.A3 - lnexa.xls.exe

  • Size

    688KB

  • MD5

    caecdf4de8d2cf26469206796a63febe

  • SHA1

    c7363f356e05fe75dac6bd9cd66ebd8d37580f66

  • SHA256

    189366b5282eba120afb62f0013934f656d1243240644dc1da02feb64bf47b98

  • SHA512

    5e95800c042c6d3c1a6de43bef89efbd81eec7488f58a2fe7d655d2b2d917338b64b4046f005bd6f7f9902d1104c1ee2977b1c9960d72de1ea93a49a41a10e50

  • SSDEEP

    12288:3LLK1r+2idJSTvYJ3dEUlSztl42r+ACxA4oFWH/qv+:7iOdJYvYJ3N0zekUSv

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.superlink.ae
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Babyko14

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
  • 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.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\TBC#01 Rev.A3 - lnexa.xls.exe
    "C:\Users\Admin\AppData\Local\Temp\TBC#01 Rev.A3 - lnexa.xls.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2924
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xbsuOYEmkiej.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2700
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xbsuOYEmkiej" /XML "C:\Users\Admin\AppData\Local\Temp\tmp706F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2768
    • C:\Users\Admin\AppData\Local\Temp\TBC#01 Rev.A3 - lnexa.xls.exe
      "C:\Users\Admin\AppData\Local\Temp\TBC#01 Rev.A3 - lnexa.xls.exe"
      2⤵
        PID:2072
      • C:\Users\Admin\AppData\Local\Temp\TBC#01 Rev.A3 - lnexa.xls.exe
        "C:\Users\Admin\AppData\Local\Temp\TBC#01 Rev.A3 - lnexa.xls.exe"
        2⤵
        • Adds Run key to start application
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2684

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp706F.tmp
      Filesize

      1KB

      MD5

      1c6211b14a16e660ff44504ca988c5d8

      SHA1

      eb49519ac552a3865e4d1355bc7df22f20c6d4f4

      SHA256

      f8241fa853d27fa7bc470bf4510a98f76550cac6ea7e7afb9bbb0968b2546721

      SHA512

      14cba3117b23c96831cc871ff2ad1d6925b28a83d364fa8107ffba71db8ba85020268e51d0f7d00d831110a1a8ddbf9ea1ee9bee860d61cee56078bf2a702793

    • C:\Users\Admin\AppData\Roaming\newapp9\newapp9.exe
      Filesize

      688KB

      MD5

      caecdf4de8d2cf26469206796a63febe

      SHA1

      c7363f356e05fe75dac6bd9cd66ebd8d37580f66

      SHA256

      189366b5282eba120afb62f0013934f656d1243240644dc1da02feb64bf47b98

      SHA512

      5e95800c042c6d3c1a6de43bef89efbd81eec7488f58a2fe7d655d2b2d917338b64b4046f005bd6f7f9902d1104c1ee2977b1c9960d72de1ea93a49a41a10e50

    • memory/2684-20-0x0000000000400000-0x0000000000444000-memory.dmp
      Filesize

      272KB

    • memory/2684-16-0x0000000000400000-0x0000000000444000-memory.dmp
      Filesize

      272KB

    • memory/2684-22-0x0000000000400000-0x0000000000444000-memory.dmp
      Filesize

      272KB

    • memory/2684-37-0x0000000072D60000-0x000000007344E000-memory.dmp
      Filesize

      6.9MB

    • memory/2684-25-0x0000000000400000-0x0000000000444000-memory.dmp
      Filesize

      272KB

    • memory/2684-13-0x0000000000400000-0x0000000000444000-memory.dmp
      Filesize

      272KB

    • memory/2684-15-0x0000000000400000-0x0000000000444000-memory.dmp
      Filesize

      272KB

    • memory/2684-36-0x0000000004870000-0x00000000048B0000-memory.dmp
      Filesize

      256KB

    • memory/2684-17-0x0000000000400000-0x0000000000444000-memory.dmp
      Filesize

      272KB

    • memory/2684-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/2684-29-0x0000000072D60000-0x000000007344E000-memory.dmp
      Filesize

      6.9MB

    • memory/2684-28-0x0000000004870000-0x00000000048B0000-memory.dmp
      Filesize

      256KB

    • memory/2700-30-0x0000000002690000-0x00000000026D0000-memory.dmp
      Filesize

      256KB

    • memory/2700-27-0x000000006E380000-0x000000006E92B000-memory.dmp
      Filesize

      5.7MB

    • memory/2700-32-0x0000000002690000-0x00000000026D0000-memory.dmp
      Filesize

      256KB

    • memory/2700-31-0x0000000002690000-0x00000000026D0000-memory.dmp
      Filesize

      256KB

    • memory/2700-33-0x000000006E380000-0x000000006E92B000-memory.dmp
      Filesize

      5.7MB

    • memory/2700-26-0x000000006E380000-0x000000006E92B000-memory.dmp
      Filesize

      5.7MB

    • memory/2924-2-0x0000000000590000-0x00000000005D0000-memory.dmp
      Filesize

      256KB

    • memory/2924-4-0x00000000003F0000-0x00000000003FC000-memory.dmp
      Filesize

      48KB

    • memory/2924-23-0x0000000073FB0000-0x000000007469E000-memory.dmp
      Filesize

      6.9MB

    • memory/2924-3-0x0000000000570000-0x000000000058A000-memory.dmp
      Filesize

      104KB

    • memory/2924-0-0x00000000001B0000-0x000000000025C000-memory.dmp
      Filesize

      688KB

    • memory/2924-1-0x0000000073FB0000-0x000000007469E000-memory.dmp
      Filesize

      6.9MB

    • memory/2924-5-0x00000000052B0000-0x0000000005334000-memory.dmp
      Filesize

      528KB