Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    23-05-2024 02:27

General

  • Target

    3fe3583b88bdd323f3472c53cc4e539423576694421176542a65473a1860cf77.exe

  • Size

    727KB

  • MD5

    9f185fb71c269d1f66c3838afbc83813

  • SHA1

    843022ec4c61214d95206cb715ec44861bd45103

  • SHA256

    3fe3583b88bdd323f3472c53cc4e539423576694421176542a65473a1860cf77

  • SHA512

    f6fb6861eec520275660d662901cf463206f094df2d961e82632c7666b33c3e4be17fa5e0250df4d8185ff8f443475aaef2e27b1c4069d8871e179d42f68b966

  • SSDEEP

    12288:/VniETpboDXj7O2klceKOe0GAF0dJmpyaZjo5ZqzMxad00On1Xv8mY4p36wRh9aI:d7bEunLRA/mpViuMwJ08n4p36w84vrv

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 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.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3fe3583b88bdd323f3472c53cc4e539423576694421176542a65473a1860cf77.exe
    "C:\Users\Admin\AppData\Local\Temp\3fe3583b88bdd323f3472c53cc4e539423576694421176542a65473a1860cf77.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2792
    • 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\3fe3583b88bdd323f3472c53cc4e539423576694421176542a65473a1860cf77.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2644
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eDcCIlzry.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2612
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eDcCIlzry" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5061.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2524
    • C:\Users\Admin\AppData\Local\Temp\3fe3583b88bdd323f3472c53cc4e539423576694421176542a65473a1860cf77.exe
      "C:\Users\Admin\AppData\Local\Temp\3fe3583b88bdd323f3472c53cc4e539423576694421176542a65473a1860cf77.exe"
      2⤵
        PID:2404
      • C:\Users\Admin\AppData\Local\Temp\3fe3583b88bdd323f3472c53cc4e539423576694421176542a65473a1860cf77.exe
        "C:\Users\Admin\AppData\Local\Temp\3fe3583b88bdd323f3472c53cc4e539423576694421176542a65473a1860cf77.exe"
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2412

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Command and Scripting Interpreter

    1
    T1059

    PowerShell

    1
    T1059.001

    Scheduled Task/Job

    1
    T1053

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Unsecured Credentials

    4
    T1552

    Credentials In Files

    3
    T1552.001

    Credentials in Registry

    1
    T1552.002

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    4
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp5061.tmp
      Filesize

      1KB

      MD5

      7cfea07f4c4ad3181cc59f94c629755d

      SHA1

      f1608381d11b89ccbd9b2cf86ced3fdb3efd8278

      SHA256

      9f1bde7d4c9f6e4fc28f4686ccd9ff7a37d6b0dc375f1b467716e9be731b537a

      SHA512

      69cac4e58971280377a726c42cd414024102a22d6faa35fdc8a9774a1316bf575572b99bebbd20329acdb91300b247310931a99cfd443f763295d843f80a04d4

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

      7KB

      MD5

      25ad8c9539d87a581d74b720cb15bb68

      SHA1

      fbb66130916d00197ac18f00353cac5248d8df1c

      SHA256

      8ec03343fd67adcf5d36e205afde2d652485d36f4630c569b1b73875cdc0eacd

      SHA512

      57f72da9c48c88938186e90d6a9c5cf16a30deb05c8a328692a83b71e3bbb488682b27c4a2ebdf5c4b8d361abe1a99e19a4d86ffab9a5aa5521cf49fdbe47b0c

    • memory/2412-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/2412-28-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2412-23-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2412-25-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2412-29-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2412-30-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2412-21-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2412-19-0x0000000000400000-0x0000000000442000-memory.dmp
      Filesize

      264KB

    • memory/2792-6-0x0000000005730000-0x00000000057B2000-memory.dmp
      Filesize

      520KB

    • memory/2792-1-0x0000000000A70000-0x0000000000B28000-memory.dmp
      Filesize

      736KB

    • memory/2792-0-0x00000000744CE000-0x00000000744CF000-memory.dmp
      Filesize

      4KB

    • memory/2792-2-0x00000000744C0000-0x0000000074BAE000-memory.dmp
      Filesize

      6.9MB

    • memory/2792-3-0x00000000006C0000-0x00000000006DE000-memory.dmp
      Filesize

      120KB

    • memory/2792-5-0x0000000000A40000-0x0000000000A56000-memory.dmp
      Filesize

      88KB

    • memory/2792-4-0x0000000000A30000-0x0000000000A40000-memory.dmp
      Filesize

      64KB

    • memory/2792-31-0x00000000744C0000-0x0000000074BAE000-memory.dmp
      Filesize

      6.9MB