Analysis

  • max time kernel
    137s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-01-2023 13:29

General

  • Target

    63d8c6d5aa91ded15e59599571aff23a5713be59.exe

  • Size

    783KB

  • MD5

    9bd05e2bf750cef915157ceebf7478cb

  • SHA1

    63d8c6d5aa91ded15e59599571aff23a5713be59

  • SHA256

    9a925e5f7a296bce2b8c8a0f84fbc2eb25567569586e7deac35ae8290589eb08

  • SHA512

    7c1290b3ddacb7396412341b75645de045158d51c8f3b6af4b0e76efa587dace542faa0d794b041ae2b5d60e9a9aef37137b634421ba8f2967ee98a5a28e8b08

  • SSDEEP

    12288:G22ULyS1sOE7Gks45yfO/xIVulhbaL7ZemY:GoyS1sVGke6qol9aXZPY

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Drops file in Drivers directory 1 IoCs
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\63d8c6d5aa91ded15e59599571aff23a5713be59.exe
    "C:\Users\Admin\AppData\Local\Temp\63d8c6d5aa91ded15e59599571aff23a5713be59.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3440
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HiHvTkZZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFF15.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2444
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1888

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpFF15.tmp

    Filesize

    1KB

    MD5

    1a11b2bdc898857186c7d73259b68c3b

    SHA1

    b31c2fc528cc7840b54a187a133ad1d2fdbf297c

    SHA256

    4516aed9f835804ddcdfce70ee64f5ff7d0b438669d513cac607c9ab0d9c783c

    SHA512

    22eda95029b85d26eff463f32cc8c875a34960111920e6260f15feba6816c314423ffa81fd64d82dd19e0700c56a7f03920d34109c725f6301b88d19bd242963

  • memory/1888-139-0x0000000000000000-mapping.dmp

  • memory/1888-140-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1888-141-0x0000000005CB0000-0x0000000005D16000-memory.dmp

    Filesize

    408KB

  • memory/1888-142-0x0000000006240000-0x0000000006290000-memory.dmp

    Filesize

    320KB

  • memory/2444-137-0x0000000000000000-mapping.dmp

  • memory/3440-132-0x0000000000950000-0x0000000000A1A000-memory.dmp

    Filesize

    808KB

  • memory/3440-133-0x0000000005900000-0x0000000005EA4000-memory.dmp

    Filesize

    5.6MB

  • memory/3440-134-0x00000000053F0000-0x0000000005482000-memory.dmp

    Filesize

    584KB

  • memory/3440-135-0x0000000005490000-0x000000000552C000-memory.dmp

    Filesize

    624KB

  • memory/3440-136-0x00000000053B0000-0x00000000053BA000-memory.dmp

    Filesize

    40KB