Analysis

  • max time kernel
    125s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-12-2023 10:26

General

  • Target

    1be1eb3fc904fc5a9e9e555e3fa4a2b6a5a299917d5afa9a1570079195387fa3.exe

  • Size

    623KB

  • MD5

    8eab5e4d034fde42eb31add0cb923a97

  • SHA1

    ac9f5a051227302049aa5136a26f30a3707db55c

  • SHA256

    1be1eb3fc904fc5a9e9e555e3fa4a2b6a5a299917d5afa9a1570079195387fa3

  • SHA512

    54f6f28e0ad2ba4cf968fb766d000f97afb851a6886649c7968a39a3e09eff5974455164ba0e43963a1bc5a416b1fabfd6780c55cd794011ea474bd72c2accdb

  • SSDEEP

    12288:14uUdaP5mn0llWSQSSKJOzIT5HiSRJ56/:ydaP5mn0llNQN2OzCti2z

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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 2 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1be1eb3fc904fc5a9e9e555e3fa4a2b6a5a299917d5afa9a1570079195387fa3.exe
    "C:\Users\Admin\AppData\Local\Temp\1be1eb3fc904fc5a9e9e555e3fa4a2b6a5a299917d5afa9a1570079195387fa3.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3436
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      2⤵
        PID:2796
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        2⤵
          PID:4460
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          2⤵
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2344
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 1916
            3⤵
            • Program crash
            PID:3512
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          2⤵
            PID:1880
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 192 -p 2344 -ip 2344
          1⤵
            PID:4452

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/2344-10-0x0000000000400000-0x0000000000442000-memory.dmp

            Filesize

            264KB

          • memory/2344-17-0x0000000074870000-0x0000000075020000-memory.dmp

            Filesize

            7.7MB

          • memory/2344-15-0x0000000005450000-0x00000000054B6000-memory.dmp

            Filesize

            408KB

          • memory/2344-14-0x00000000053B0000-0x00000000053C0000-memory.dmp

            Filesize

            64KB

          • memory/2344-13-0x0000000074870000-0x0000000075020000-memory.dmp

            Filesize

            7.7MB

          • memory/3436-3-0x0000000005170000-0x00000000051D0000-memory.dmp

            Filesize

            384KB

          • memory/3436-6-0x00000000052E0000-0x0000000005320000-memory.dmp

            Filesize

            256KB

          • memory/3436-7-0x0000000005320000-0x000000000536C000-memory.dmp

            Filesize

            304KB

          • memory/3436-8-0x0000000005940000-0x0000000005EE4000-memory.dmp

            Filesize

            5.6MB

          • memory/3436-5-0x00000000052A0000-0x00000000052E0000-memory.dmp

            Filesize

            256KB

          • memory/3436-4-0x0000000005240000-0x0000000005298000-memory.dmp

            Filesize

            352KB

          • memory/3436-12-0x0000000074870000-0x0000000075020000-memory.dmp

            Filesize

            7.7MB

          • memory/3436-0-0x00000000008A0000-0x0000000000942000-memory.dmp

            Filesize

            648KB

          • memory/3436-2-0x0000000005160000-0x0000000005170000-memory.dmp

            Filesize

            64KB

          • memory/3436-1-0x0000000074870000-0x0000000075020000-memory.dmp

            Filesize

            7.7MB