Analysis

  • max time kernel
    138s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/01/2023, 08:25

General

  • Target

    INVOICE 359323.exe

  • Size

    972KB

  • MD5

    f89999484cb2d1d844cc8b60dfb02c4f

  • SHA1

    1df0e3b1b65309537dabf25c2c94d8824109266c

  • SHA256

    5930c5866f8eed59c28ce8c986a3e44a289cfbb12a7a7197d2d6c6caad4cdb69

  • SHA512

    a08df86cdb284ad1e8101540ca0db6ccc1f82e78e7cedddff123a34a6108893eae133d7bb6311b6d49ff0b6c3ae22653de654c34adc8c2c5b5e8aecee4fc2d15

  • SSDEEP

    24576:k1dgWuuJ/Gmz4aiz/DJ5r2s21GZjpAx0WxGew:kMuJ/saiz7JB2VQR00Wxjw

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • 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 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\INVOICE 359323.exe
    "C:\Users\Admin\AppData\Local\Temp\INVOICE 359323.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3912
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BIbVGIGlBns" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF5EE.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4380
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:5024

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpF5EE.tmp

    Filesize

    1KB

    MD5

    0d68b98b9fcc22a39c4d886ddf5a22a9

    SHA1

    5db2c2ee3aea230ad8115f2ac8776ce1799fcd93

    SHA256

    15affde276781840fa38a5be1de05c656813718ce878edbdd7bb982e5adeb062

    SHA512

    8319082264b662120abebf68810159d6cbff95e13a7fe8b066babacf65e94502f2164837cfe0b9535d51cb693c7df77f6acbe8af476a0888d67a84b79b0b6829

  • memory/3912-132-0x0000000000940000-0x0000000000A38000-memory.dmp

    Filesize

    992KB

  • memory/3912-133-0x0000000005AA0000-0x0000000006044000-memory.dmp

    Filesize

    5.6MB

  • memory/3912-134-0x00000000053F0000-0x0000000005482000-memory.dmp

    Filesize

    584KB

  • memory/3912-135-0x00000000054F0000-0x000000000558C000-memory.dmp

    Filesize

    624KB

  • memory/3912-136-0x00000000053E0000-0x00000000053EA000-memory.dmp

    Filesize

    40KB

  • memory/5024-140-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/5024-141-0x0000000006030000-0x0000000006096000-memory.dmp

    Filesize

    408KB

  • memory/5024-142-0x00000000063A0000-0x00000000063F0000-memory.dmp

    Filesize

    320KB