Analysis

  • max time kernel
    142s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04-06-2024 01:42

General

  • Target

    ac257a5301ed129abca81bbb10ad8cce2d3d46663459d46ebbb54f0b30d3ace3.exe

  • Size

    705KB

  • MD5

    fc225e29dc7fc45a700476e1ec78084f

  • SHA1

    29eb09ffdbe967ea1a46c3fd31ff06c26fc3e7c7

  • SHA256

    ac257a5301ed129abca81bbb10ad8cce2d3d46663459d46ebbb54f0b30d3ace3

  • SHA512

    43881dc9387d302a065d488221f942104ab4ae18551015d029d647112fccf4181cadc8cc46762f7c36d4cbb44ae988714ae7fbc3e066c8ef3d875aef6a84e1d8

  • SSDEEP

    12288:BMlKt/rFfaz9XjB1hCpmUthz5dZGGvt+U9NX0HFO2d46wspwm:UKN5iRzBTCUMl6et+qNXSX46wspX

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.

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac257a5301ed129abca81bbb10ad8cce2d3d46663459d46ebbb54f0b30d3ace3.exe
    "C:\Users\Admin\AppData\Local\Temp\ac257a5301ed129abca81bbb10ad8cce2d3d46663459d46ebbb54f0b30d3ace3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2732
    • 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\ac257a5301ed129abca81bbb10ad8cce2d3d46663459d46ebbb54f0b30d3ace3.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3064
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\aycJWvDvs.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2696
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aycJWvDvs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB951.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2988
    • C:\Users\Admin\AppData\Local\Temp\ac257a5301ed129abca81bbb10ad8cce2d3d46663459d46ebbb54f0b30d3ace3.exe
      "C:\Users\Admin\AppData\Local\Temp\ac257a5301ed129abca81bbb10ad8cce2d3d46663459d46ebbb54f0b30d3ace3.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2176

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpB951.tmp

    Filesize

    1KB

    MD5

    71c1730e3a200ca8fd0dd12af7ca9e19

    SHA1

    79eb2b846c10f304a28fae091ed9361615c0e4ea

    SHA256

    4b83dcfe4e73902a718d5b80904f1793592c9d07984d28a6e9059a7e76edc4e3

    SHA512

    1c82efd0f592f4285bde87fb565b8921d9b6bb18e9ff04ae492a3b397b08ec3ba1681b072cb05c1102adffa4a0d9fb9ab371110373cd218795200c798388330a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\ZMTNLHPOLIB34EQV92OB.temp

    Filesize

    7KB

    MD5

    6ac925a6c3fcd828bc2309ee0ee967c8

    SHA1

    47dcc7040dab16f00b6e728ac5325b60998e2eae

    SHA256

    3cf382bae70741e928655e99ddfd9a2b21f1d24d38de607b70eff29e36235422

    SHA512

    fb0ff6b7e9937d507d0bfa360f2cf0caa301b1364b7570777ed2727504699277855d4756776a8afdc0e5609f3b1a70597a8f5fde082a48364d9c449fac81f6bd

  • memory/2176-29-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2176-28-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2176-21-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2176-23-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2176-25-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2176-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2176-30-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2176-19-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2732-6-0x00000000049B0000-0x0000000004A34000-memory.dmp

    Filesize

    528KB

  • memory/2732-1-0x0000000000020000-0x00000000000D6000-memory.dmp

    Filesize

    728KB

  • memory/2732-0-0x000000007494E000-0x000000007494F000-memory.dmp

    Filesize

    4KB

  • memory/2732-2-0x0000000074940000-0x000000007502E000-memory.dmp

    Filesize

    6.9MB

  • memory/2732-3-0x0000000000600000-0x0000000000616000-memory.dmp

    Filesize

    88KB

  • memory/2732-5-0x0000000001FA0000-0x0000000001FB0000-memory.dmp

    Filesize

    64KB

  • memory/2732-4-0x0000000001F10000-0x0000000001F1E000-memory.dmp

    Filesize

    56KB

  • memory/2732-31-0x0000000074940000-0x000000007502E000-memory.dmp

    Filesize

    6.9MB