Analysis

  • max time kernel
    149s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 17:08

General

  • Target

    c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8.exe

  • Size

    750KB

  • MD5

    af7969ad9402eed625d7062c487c6f66

  • SHA1

    eb7d2554b1a38da763b94177f6272a86c35b1d0d

  • SHA256

    c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8

  • SHA512

    20e1cae871ab11bd0c23ba040a1d0b377d6785b006d8b5de6d7184a1fd0f8699b9993d1f0988a1175516a0545df3f245d119757032d055f0a1e6a80cc7728878

  • SSDEEP

    12288:5zvxn6yWn7fcpVZlu/6uHl8XdpxC8wmkSgIYBo9u9xm5TdgWgegPgy/g52w8BLvm:Zxn698VVYl4PCVogIY0Qm9dg0gIyYsp6

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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 1 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8.exe
    "C:\Users\Admin\AppData\Local\Temp\c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2868
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2676
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WWDyYT.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2616
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WWDyYT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4FD5.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2592

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp4FD5.tmp
    Filesize

    1KB

    MD5

    ecfe6b86a3f1389a45d911cae4803d5a

    SHA1

    294b92fdf45a8a7ec05d76ce0a472b5babb16eb3

    SHA256

    fb641d98aa979dc90aa87237e9a80b17578f7eb2a6e87a817fd3734d1175e1f1

    SHA512

    f5a112f03665d4e20101a3eec60497d9cdcdfd1fe67d422234f71be3102e5362660b82df4263110f972c02c9b310654faab28ca44447f912d86a789df39a6295

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    Filesize

    7KB

    MD5

    c64db116b0721bc9b975031acf4758df

    SHA1

    5ca869acae714feed853878d88618f3b79d9c6cc

    SHA256

    bcd012a25e104e3be03b2b09a10d6fc56b019b93178fd943d79093a2f2ce1202

    SHA512

    200997298235c99e6426b2bd1b6854866888279d6804c06f7a080e25cc722bafdd7c8b28b91ed3d4076c8cd652a6e560d3352a7f8ec4d6b2e06e04641823755a

  • memory/2868-0-0x0000000074C3E000-0x0000000074C3F000-memory.dmp
    Filesize

    4KB

  • memory/2868-1-0x00000000002D0000-0x0000000000390000-memory.dmp
    Filesize

    768KB

  • memory/2868-2-0x0000000074C30000-0x000000007531E000-memory.dmp
    Filesize

    6.9MB

  • memory/2868-3-0x00000000006D0000-0x00000000006F2000-memory.dmp
    Filesize

    136KB

  • memory/2868-4-0x00000000004A0000-0x00000000004AC000-memory.dmp
    Filesize

    48KB

  • memory/2868-5-0x00000000004C0000-0x00000000004D0000-memory.dmp
    Filesize

    64KB

  • memory/2868-6-0x0000000005A00000-0x0000000005A84000-memory.dmp
    Filesize

    528KB

  • memory/2868-19-0x0000000002090000-0x00000000020D2000-memory.dmp
    Filesize

    264KB

  • memory/2868-20-0x0000000074C3E000-0x0000000074C3F000-memory.dmp
    Filesize

    4KB

  • memory/2868-21-0x0000000074C30000-0x000000007531E000-memory.dmp
    Filesize

    6.9MB