Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-03-2024 03:38

General

  • Target

    TelegramRAT.exe

  • Size

    141KB

  • MD5

    3f348796bd487827ac9e566dc082d5ce

  • SHA1

    54fd77ca70dfcb9dfa092ff5f5cc911eca27e39d

  • SHA256

    05784dc21b94b6c838f1d979fcf7107fc7c1be31c026eccc9259c7878a52ba92

  • SHA512

    bc5292d8a45e10fd59d4661bdb189f595407b5c3f5fbe2f6a3153e129d75a1d8e868ada144504640c2e1504cba8c717a365fab145ad04b7c179f2829f17309c8

  • SSDEEP

    3072:Txx7ZFDCfyVRHpy756OtAVIqOYiibKmCPQW4eCrAZrRen1:FZZFDCfyVRJchDebZos

Malware Config

Extracted

Family

toxiceye

C2

https://api.telegram.org/bot7040511851:AAEjBKSxADGWlNtLxaKpotGtf53NUQ1UgAo/sendMessage?chat_id=6226815698

Signatures

  • ToxicEye

    ToxicEye is a trojan written in C#.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\TelegramRAT.exe
    "C:\Users\Admin\AppData\Local\Temp\TelegramRAT.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3256
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\a\rat.exe"
      2⤵
      • Creates scheduled task(s)
      PID:4288
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp6031.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp6031.tmp.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4572
      • C:\Windows\system32\tasklist.exe
        Tasklist /fi "PID eq 3256"
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:2384
      • C:\Windows\system32\find.exe
        find ":"
        3⤵
          PID:2940
        • C:\Windows\system32\timeout.exe
          Timeout /T 1 /Nobreak
          3⤵
          • Delays execution with timeout.exe
          PID:3372
        • C:\a\rat.exe
          "rat.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3200
          • C:\Windows\System32\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\a\rat.exe"
            4⤵
            • Creates scheduled task(s)
            PID:3808

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp6031.tmp.bat

      Filesize

      175B

      MD5

      7bfdeb82c6f073b9bd0244d8cd241f08

      SHA1

      c3e5929b300058a63aa5660ffb38d5d12f9661a5

      SHA256

      df9324f1bf380dd714e390aea9fb9fc83f3100f0583bf10d9f0747063a82e198

      SHA512

      c1f6025f97d5d66dabdbf9bd457f22afd37934d72ae8a6aedbd86d44481224dec4721ceb8999e6178d8ae6b6c12eff08c19c41800e08718161598e1e4d3b654f

    • C:\a\rat.exe

      Filesize

      140KB

      MD5

      920d6ea63b03c8ca7c2fd8e456973f62

      SHA1

      16c977a44af4449be701b50414276ff80f60b373

      SHA256

      532b69ac7d72f436069bc93748de4838e2888e0bf88252428b656c5f0fb3b535

      SHA512

      e54ba38a2d51de259a0f55c3e437e775c4274d347c5a9b8fc8f4a08f019dfcca5e3122c3cfcedde7b9931c7db7ae20eaf5418a2b7919f40f794309c40355804c

    • C:\a\rat.exe

      Filesize

      141KB

      MD5

      3f348796bd487827ac9e566dc082d5ce

      SHA1

      54fd77ca70dfcb9dfa092ff5f5cc911eca27e39d

      SHA256

      05784dc21b94b6c838f1d979fcf7107fc7c1be31c026eccc9259c7878a52ba92

      SHA512

      bc5292d8a45e10fd59d4661bdb189f595407b5c3f5fbe2f6a3153e129d75a1d8e868ada144504640c2e1504cba8c717a365fab145ad04b7c179f2829f17309c8

    • memory/3200-22-0x00000277B5D70000-0x00000277B5D80000-memory.dmp

      Filesize

      64KB

    • memory/3200-17-0x00000277B5D70000-0x00000277B5D80000-memory.dmp

      Filesize

      64KB

    • memory/3200-47-0x00000277B5D70000-0x00000277B5D80000-memory.dmp

      Filesize

      64KB

    • memory/3200-46-0x00000277B5D70000-0x00000277B5D80000-memory.dmp

      Filesize

      64KB

    • memory/3200-11-0x00007FFDE7270000-0x00007FFDE7D31000-memory.dmp

      Filesize

      10.8MB

    • memory/3200-12-0x00000277B5D70000-0x00000277B5D80000-memory.dmp

      Filesize

      64KB

    • memory/3200-14-0x00000277CED80000-0x00000277CED8A000-memory.dmp

      Filesize

      40KB

    • memory/3200-45-0x00000277B5D70000-0x00000277B5D80000-memory.dmp

      Filesize

      64KB

    • memory/3200-16-0x00000277CEEF0000-0x00000277CEF02000-memory.dmp

      Filesize

      72KB

    • memory/3200-44-0x00007FFDE7270000-0x00007FFDE7D31000-memory.dmp

      Filesize

      10.8MB

    • memory/3256-0-0x0000026120760000-0x000002612078A000-memory.dmp

      Filesize

      168KB

    • memory/3256-7-0x00007FFDE7270000-0x00007FFDE7D31000-memory.dmp

      Filesize

      10.8MB

    • memory/3256-1-0x00007FFDE7270000-0x00007FFDE7D31000-memory.dmp

      Filesize

      10.8MB

    • memory/3256-2-0x000002613AD30000-0x000002613AD40000-memory.dmp

      Filesize

      64KB