Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    29-01-2023 19:28

General

  • Target

    5864c4d4d644e97124735542eefad82cee2db1bc1626d2d0c719c779d1e005d0.exe

  • Size

    147KB

  • MD5

    2b6e9f65f812cb58554ef8e64fc37943

  • SHA1

    c4dff76fb2ed2519300bd163ea62151d9e332651

  • SHA256

    5864c4d4d644e97124735542eefad82cee2db1bc1626d2d0c719c779d1e005d0

  • SHA512

    f63eba0d085d84bde238fa5635cde2bebcc965cd562e03f0aaaa81ddedbc8fc7f0b6d63530749b72a388d2fd22f8460c4f0355a2d626c27fe583c523d1d6d8c7

  • SSDEEP

    3072:nz3gmOEzjQOM4rXiMrz7wuk730Xshb+jWi4nJG2FDzI:nTbBYOHLiM8T730jyHJG

Score
10/10

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    IRj3SceatjDfweW/qMMw7g==

  • antivm

    true

  • c2_url

    https://pastebin.com/raw/Jpq3By4t

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    Audio Realtek Driver.exe

  • main_folder

    AppData

  • pin_spread

    false

  • sub_folder

    \Audio Realtek Driver\

  • usb_spread

    false

Signatures

  • LimeRAT

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\5864c4d4d644e97124735542eefad82cee2db1bc1626d2d0c719c779d1e005d0.exe
    "C:\Users\Admin\AppData\Local\Temp\5864c4d4d644e97124735542eefad82cee2db1bc1626d2d0c719c779d1e005d0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1972
    • C:\Users\Admin\AppData\Local\Temp\5864c4d4d644e97124735542eefad82cee2db1bc1626d2d0c719c779d1e005d0.exe
      "C:\Users\Admin\AppData\Local\Temp\5864c4d4d644e97124735542eefad82cee2db1bc1626d2d0c719c779d1e005d0.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:592
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe'"
        3⤵
        • Creates scheduled task(s)
        PID:1888
      • C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe
        "C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1080
        • C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe
          "C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:760

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe

    Filesize

    147KB

    MD5

    2b6e9f65f812cb58554ef8e64fc37943

    SHA1

    c4dff76fb2ed2519300bd163ea62151d9e332651

    SHA256

    5864c4d4d644e97124735542eefad82cee2db1bc1626d2d0c719c779d1e005d0

    SHA512

    f63eba0d085d84bde238fa5635cde2bebcc965cd562e03f0aaaa81ddedbc8fc7f0b6d63530749b72a388d2fd22f8460c4f0355a2d626c27fe583c523d1d6d8c7

  • C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe

    Filesize

    147KB

    MD5

    2b6e9f65f812cb58554ef8e64fc37943

    SHA1

    c4dff76fb2ed2519300bd163ea62151d9e332651

    SHA256

    5864c4d4d644e97124735542eefad82cee2db1bc1626d2d0c719c779d1e005d0

    SHA512

    f63eba0d085d84bde238fa5635cde2bebcc965cd562e03f0aaaa81ddedbc8fc7f0b6d63530749b72a388d2fd22f8460c4f0355a2d626c27fe583c523d1d6d8c7

  • C:\Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe

    Filesize

    147KB

    MD5

    2b6e9f65f812cb58554ef8e64fc37943

    SHA1

    c4dff76fb2ed2519300bd163ea62151d9e332651

    SHA256

    5864c4d4d644e97124735542eefad82cee2db1bc1626d2d0c719c779d1e005d0

    SHA512

    f63eba0d085d84bde238fa5635cde2bebcc965cd562e03f0aaaa81ddedbc8fc7f0b6d63530749b72a388d2fd22f8460c4f0355a2d626c27fe583c523d1d6d8c7

  • \Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe

    Filesize

    147KB

    MD5

    2b6e9f65f812cb58554ef8e64fc37943

    SHA1

    c4dff76fb2ed2519300bd163ea62151d9e332651

    SHA256

    5864c4d4d644e97124735542eefad82cee2db1bc1626d2d0c719c779d1e005d0

    SHA512

    f63eba0d085d84bde238fa5635cde2bebcc965cd562e03f0aaaa81ddedbc8fc7f0b6d63530749b72a388d2fd22f8460c4f0355a2d626c27fe583c523d1d6d8c7

  • \Users\Admin\AppData\Roaming\Audio Realtek Driver\Audio Realtek Driver.exe

    Filesize

    147KB

    MD5

    2b6e9f65f812cb58554ef8e64fc37943

    SHA1

    c4dff76fb2ed2519300bd163ea62151d9e332651

    SHA256

    5864c4d4d644e97124735542eefad82cee2db1bc1626d2d0c719c779d1e005d0

    SHA512

    f63eba0d085d84bde238fa5635cde2bebcc965cd562e03f0aaaa81ddedbc8fc7f0b6d63530749b72a388d2fd22f8460c4f0355a2d626c27fe583c523d1d6d8c7

  • memory/592-65-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/592-57-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/592-63-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/592-56-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/592-67-0x0000000075761000-0x0000000075763000-memory.dmp

    Filesize

    8KB

  • memory/592-60-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/592-61-0x000000000040813E-mapping.dmp

  • memory/592-59-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/760-79-0x000000000040813E-mapping.dmp

  • memory/1080-72-0x00000000008E0000-0x000000000090C000-memory.dmp

    Filesize

    176KB

  • memory/1080-69-0x0000000000000000-mapping.dmp

  • memory/1888-66-0x0000000000000000-mapping.dmp

  • memory/1972-54-0x0000000000BD0000-0x0000000000BFC000-memory.dmp

    Filesize

    176KB

  • memory/1972-55-0x00000000004A0000-0x00000000004A8000-memory.dmp

    Filesize

    32KB