Analysis

  • max time kernel
    130s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-10-2024 11:09

General

  • Target

    proforma invoice No 2003988 dated 10042024.exe

  • Size

    742KB

  • MD5

    288e2818b37e52f9e697431692abb36e

  • SHA1

    6868bc69d0d6d0b92e9c0c3078c09420c3dc651f

  • SHA256

    0a74602363d411ea6ce0a632acadeb68025595990a3ee9add024ab36cca0bfcc

  • SHA512

    e7d481cc5281223fc4636c190026f14fef5351e80bec2bd40bb053349cba497998b9700aa1b06736bc30a5a657fc2690ad94adec50b3f2f315287115805b9cee

  • SSDEEP

    12288:Ahx6P6SzMLJ9Cg0ISgrUaoNsFo4uMY2Csm0jQ:gx/yMnCCSgAmo/WV

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    ftp.concaribe.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    ro}UWgz#!38E

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.concaribe.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    ro}UWgz#!38E

Signatures

  • AgentTesla

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

  • 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 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\proforma invoice No 2003988 dated 10042024.exe
    "C:\Users\Admin\AppData\Local\Temp\proforma invoice No 2003988 dated 10042024.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2032
    • C:\Users\Admin\AppData\Local\Temp\proforma invoice No 2003988 dated 10042024.exe
      "C:\Users\Admin\AppData\Local\Temp\proforma invoice No 2003988 dated 10042024.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2248
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4280,i,10065386245627775856,6567048529106473151,262144 --variations-seed-version --mojo-platform-channel-handle=4264 /prefetch:8
    1⤵
      PID:1112
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:5000
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:1828

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/2032-11-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/2032-1-0x0000000000250000-0x0000000000310000-memory.dmp

        Filesize

        768KB

      • memory/2032-2-0x00000000051E0000-0x0000000005784000-memory.dmp

        Filesize

        5.6MB

      • memory/2032-3-0x0000000004CD0000-0x0000000004D62000-memory.dmp

        Filesize

        584KB

      • memory/2032-5-0x0000000004D70000-0x0000000004D7A000-memory.dmp

        Filesize

        40KB

      • memory/2032-4-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/2032-6-0x0000000004E50000-0x0000000004E98000-memory.dmp

        Filesize

        288KB

      • memory/2032-0-0x0000000074A2E000-0x0000000074A2F000-memory.dmp

        Filesize

        4KB

      • memory/2248-12-0x0000000006650000-0x00000000066A0000-memory.dmp

        Filesize

        320KB

      • memory/2248-9-0x0000000004FF0000-0x0000000005056000-memory.dmp

        Filesize

        408KB

      • memory/2248-10-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/2248-8-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/2248-7-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2248-13-0x0000000006740000-0x00000000067DC000-memory.dmp

        Filesize

        624KB

      • memory/2248-14-0x0000000074A20000-0x00000000751D0000-memory.dmp

        Filesize

        7.7MB

      • memory/5000-15-0x0000022827190000-0x0000022827191000-memory.dmp

        Filesize

        4KB

      • memory/5000-16-0x0000022827190000-0x0000022827191000-memory.dmp

        Filesize

        4KB

      • memory/5000-17-0x0000022827190000-0x0000022827191000-memory.dmp

        Filesize

        4KB

      • memory/5000-21-0x0000022827190000-0x0000022827191000-memory.dmp

        Filesize

        4KB

      • memory/5000-27-0x0000022827190000-0x0000022827191000-memory.dmp

        Filesize

        4KB

      • memory/5000-26-0x0000022827190000-0x0000022827191000-memory.dmp

        Filesize

        4KB

      • memory/5000-25-0x0000022827190000-0x0000022827191000-memory.dmp

        Filesize

        4KB

      • memory/5000-24-0x0000022827190000-0x0000022827191000-memory.dmp

        Filesize

        4KB

      • memory/5000-23-0x0000022827190000-0x0000022827191000-memory.dmp

        Filesize

        4KB

      • memory/5000-22-0x0000022827190000-0x0000022827191000-memory.dmp

        Filesize

        4KB