Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    28-12-2022 09:21

General

  • Target

    HEUR-Trojan.MSIL.Tasker.gen-dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6.exe

  • Size

    39KB

  • MD5

    cd3c8d05f0af4fa28d8502f1a209d36f

  • SHA1

    8cacf12efa67d224b6c4d52df58b6398031293e2

  • SHA256

    dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6

  • SHA512

    d414280e4d6af0b4314c4aae07abef698fde75bd4a65a90c81a652423a461e2292251feb041e49d2b1fd32cc6009d2d981d9aa40909e3491c57fbefc46aff98d

  • SSDEEP

    768:8rKS6JBwNQPvfyC45N6FlYYV+Gcvj6i8t2txcT4ZrRoZX:8rIBwNuvabeFlYYo3o2t482Z

Score
10/10

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    xdr11796

  • antivm

    true

  • c2_url

    https://pastebin.com/raw/Mu49qhCq

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    Github.exe

  • main_folder

    AppData

  • pin_spread

    false

  • sub_folder

    \

  • usb_spread

    false

Signatures

  • LimeRAT

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • 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 use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan.MSIL.Tasker.gen-dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6.exe
    "C:\Users\Admin\AppData\Local\Temp\HEUR-Trojan.MSIL.Tasker.gen-dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1896
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Github.exe'"
      2⤵
      • Creates scheduled task(s)
      PID:684
    • C:\Users\Admin\AppData\Roaming\Github.exe
      "C:\Users\Admin\AppData\Roaming\Github.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1720

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Github.exe

    Filesize

    39KB

    MD5

    cd3c8d05f0af4fa28d8502f1a209d36f

    SHA1

    8cacf12efa67d224b6c4d52df58b6398031293e2

    SHA256

    dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6

    SHA512

    d414280e4d6af0b4314c4aae07abef698fde75bd4a65a90c81a652423a461e2292251feb041e49d2b1fd32cc6009d2d981d9aa40909e3491c57fbefc46aff98d

  • C:\Users\Admin\AppData\Roaming\Github.exe

    Filesize

    39KB

    MD5

    cd3c8d05f0af4fa28d8502f1a209d36f

    SHA1

    8cacf12efa67d224b6c4d52df58b6398031293e2

    SHA256

    dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6

    SHA512

    d414280e4d6af0b4314c4aae07abef698fde75bd4a65a90c81a652423a461e2292251feb041e49d2b1fd32cc6009d2d981d9aa40909e3491c57fbefc46aff98d

  • \Users\Admin\AppData\Roaming\Github.exe

    Filesize

    39KB

    MD5

    cd3c8d05f0af4fa28d8502f1a209d36f

    SHA1

    8cacf12efa67d224b6c4d52df58b6398031293e2

    SHA256

    dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6

    SHA512

    d414280e4d6af0b4314c4aae07abef698fde75bd4a65a90c81a652423a461e2292251feb041e49d2b1fd32cc6009d2d981d9aa40909e3491c57fbefc46aff98d

  • \Users\Admin\AppData\Roaming\Github.exe

    Filesize

    39KB

    MD5

    cd3c8d05f0af4fa28d8502f1a209d36f

    SHA1

    8cacf12efa67d224b6c4d52df58b6398031293e2

    SHA256

    dc949c9cb7ee87cd8fc9f456201c153416a0abecce741da9d7425f6afeb6f6f6

    SHA512

    d414280e4d6af0b4314c4aae07abef698fde75bd4a65a90c81a652423a461e2292251feb041e49d2b1fd32cc6009d2d981d9aa40909e3491c57fbefc46aff98d

  • memory/684-56-0x0000000000000000-mapping.dmp

  • memory/1720-59-0x0000000000000000-mapping.dmp

  • memory/1720-64-0x00000000747D0000-0x0000000074D7B000-memory.dmp

    Filesize

    5.7MB

  • memory/1720-65-0x00000000747D0000-0x0000000074D7B000-memory.dmp

    Filesize

    5.7MB

  • memory/1896-54-0x0000000076391000-0x0000000076393000-memory.dmp

    Filesize

    8KB

  • memory/1896-55-0x00000000747D0000-0x0000000074D7B000-memory.dmp

    Filesize

    5.7MB

  • memory/1896-63-0x00000000747D0000-0x0000000074D7B000-memory.dmp

    Filesize

    5.7MB