Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-05-2024 09:02

General

  • Target

    47415dc54f54a881e0fdd0c02c26b994cf881af13f849428153ae4e42bc12ed6.exe

  • Size

    28KB

  • MD5

    1bb96e140f557472fc121bd147c7fef2

  • SHA1

    f1dca9840d4619ed536c733e618f301748041f82

  • SHA256

    47415dc54f54a881e0fdd0c02c26b994cf881af13f849428153ae4e42bc12ed6

  • SHA512

    8611b8a6a4eae862d412de1e13047b36cd9854bad75b1e8224a820f91630977908c9e560326da8a538dab097cf51b9407ed17a6050535df6ce98e8bd68b4a48d

  • SSDEEP

    768:+pOL6TvwdHRv3Jx5LY45N6voFBANLM37/j:+pJvwdH93JjlWwFBA96

Score
10/10

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    1111

  • antivm

    true

  • c2_url

    https://pastebin.com/raw/Qik1mEQY

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    WinRAR.exe

  • main_folder

    AppData

  • pin_spread

    false

  • sub_folder

    \System\

  • usb_spread

    false

Extracted

Family

limerat

Attributes
  • antivm

    false

  • c2_url

    https://pastebin.com/raw/Qik1mEQY

  • download_payload

    false

  • install

    false

  • pin_spread

    false

  • usb_spread

    false

Signatures

  • LimeRAT

    Simple yet powerful RAT for Windows machines written in .NET.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\47415dc54f54a881e0fdd0c02c26b994cf881af13f849428153ae4e42bc12ed6.exe
    "C:\Users\Admin\AppData\Local\Temp\47415dc54f54a881e0fdd0c02c26b994cf881af13f849428153ae4e42bc12ed6.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3868
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\System\WinRAR.exe'"
      2⤵
      • Creates scheduled task(s)
      PID:4204
    • C:\Users\Admin\AppData\Roaming\System\WinRAR.exe
      "C:\Users\Admin\AppData\Roaming\System\WinRAR.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2076
  • 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 --no-appcompat-clear --mojo-platform-channel-handle=4172 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3044

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\System\WinRAR.exe

      Filesize

      28KB

      MD5

      1bb96e140f557472fc121bd147c7fef2

      SHA1

      f1dca9840d4619ed536c733e618f301748041f82

      SHA256

      47415dc54f54a881e0fdd0c02c26b994cf881af13f849428153ae4e42bc12ed6

      SHA512

      8611b8a6a4eae862d412de1e13047b36cd9854bad75b1e8224a820f91630977908c9e560326da8a538dab097cf51b9407ed17a6050535df6ce98e8bd68b4a48d

    • memory/2076-15-0x0000000075290000-0x0000000075A40000-memory.dmp

      Filesize

      7.7MB

    • memory/2076-17-0x0000000075290000-0x0000000075A40000-memory.dmp

      Filesize

      7.7MB

    • memory/2076-18-0x0000000075290000-0x0000000075A40000-memory.dmp

      Filesize

      7.7MB

    • memory/3868-0-0x000000007529E000-0x000000007529F000-memory.dmp

      Filesize

      4KB

    • memory/3868-1-0x00000000002E0000-0x00000000002EC000-memory.dmp

      Filesize

      48KB

    • memory/3868-2-0x0000000004D00000-0x0000000004D9C000-memory.dmp

      Filesize

      624KB

    • memory/3868-3-0x0000000004DC0000-0x0000000004E26000-memory.dmp

      Filesize

      408KB

    • memory/3868-4-0x0000000075290000-0x0000000075A40000-memory.dmp

      Filesize

      7.7MB

    • memory/3868-5-0x0000000005960000-0x0000000005F04000-memory.dmp

      Filesize

      5.6MB

    • memory/3868-16-0x0000000075290000-0x0000000075A40000-memory.dmp

      Filesize

      7.7MB