Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-01-2023 21:30

General

  • Target

    0a7fa5e8f7cef3cdceb3c887bcf006b14c9efa682e19afbab3f1041288a6146c.exe

  • Size

    210KB

  • MD5

    8d942fdce5d9d12bf87759617b7907c9

  • SHA1

    34567a99255df31221e6361016d0138a4ed42fa8

  • SHA256

    0a7fa5e8f7cef3cdceb3c887bcf006b14c9efa682e19afbab3f1041288a6146c

  • SHA512

    f5147b8ffffd9a3a0fc7db2a4f6981b8fdb2ed18ec8f58e420c884e99e6f915681239b5cebadf3cb035210048c1aa71875978df744f6fde80bb777154bd399d3

  • SSDEEP

    3072:Kuk730Xshh+ED085419v6fECJ7Y8XWIMij70ozw+sJF3XY0PN:KT730jEYIK6fpJ7Y8HMK5K

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\0a7fa5e8f7cef3cdceb3c887bcf006b14c9efa682e19afbab3f1041288a6146c.exe
    "C:\Users\Admin\AppData\Local\Temp\0a7fa5e8f7cef3cdceb3c887bcf006b14c9efa682e19afbab3f1041288a6146c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:836
    • C:\Users\Admin\AppData\Local\Temp\0a7fa5e8f7cef3cdceb3c887bcf006b14c9efa682e19afbab3f1041288a6146c.exe
      "C:\Users\Admin\AppData\Local\Temp\0a7fa5e8f7cef3cdceb3c887bcf006b14c9efa682e19afbab3f1041288a6146c.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:280
      • 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:1872
      • 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:1356
        • 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:1364

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

    210KB

    MD5

    8d942fdce5d9d12bf87759617b7907c9

    SHA1

    34567a99255df31221e6361016d0138a4ed42fa8

    SHA256

    0a7fa5e8f7cef3cdceb3c887bcf006b14c9efa682e19afbab3f1041288a6146c

    SHA512

    f5147b8ffffd9a3a0fc7db2a4f6981b8fdb2ed18ec8f58e420c884e99e6f915681239b5cebadf3cb035210048c1aa71875978df744f6fde80bb777154bd399d3

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

    Filesize

    210KB

    MD5

    8d942fdce5d9d12bf87759617b7907c9

    SHA1

    34567a99255df31221e6361016d0138a4ed42fa8

    SHA256

    0a7fa5e8f7cef3cdceb3c887bcf006b14c9efa682e19afbab3f1041288a6146c

    SHA512

    f5147b8ffffd9a3a0fc7db2a4f6981b8fdb2ed18ec8f58e420c884e99e6f915681239b5cebadf3cb035210048c1aa71875978df744f6fde80bb777154bd399d3

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

    Filesize

    210KB

    MD5

    8d942fdce5d9d12bf87759617b7907c9

    SHA1

    34567a99255df31221e6361016d0138a4ed42fa8

    SHA256

    0a7fa5e8f7cef3cdceb3c887bcf006b14c9efa682e19afbab3f1041288a6146c

    SHA512

    f5147b8ffffd9a3a0fc7db2a4f6981b8fdb2ed18ec8f58e420c884e99e6f915681239b5cebadf3cb035210048c1aa71875978df744f6fde80bb777154bd399d3

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

    Filesize

    210KB

    MD5

    8d942fdce5d9d12bf87759617b7907c9

    SHA1

    34567a99255df31221e6361016d0138a4ed42fa8

    SHA256

    0a7fa5e8f7cef3cdceb3c887bcf006b14c9efa682e19afbab3f1041288a6146c

    SHA512

    f5147b8ffffd9a3a0fc7db2a4f6981b8fdb2ed18ec8f58e420c884e99e6f915681239b5cebadf3cb035210048c1aa71875978df744f6fde80bb777154bd399d3

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

    Filesize

    210KB

    MD5

    8d942fdce5d9d12bf87759617b7907c9

    SHA1

    34567a99255df31221e6361016d0138a4ed42fa8

    SHA256

    0a7fa5e8f7cef3cdceb3c887bcf006b14c9efa682e19afbab3f1041288a6146c

    SHA512

    f5147b8ffffd9a3a0fc7db2a4f6981b8fdb2ed18ec8f58e420c884e99e6f915681239b5cebadf3cb035210048c1aa71875978df744f6fde80bb777154bd399d3

  • memory/280-65-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/280-61-0x000000000040813E-mapping.dmp

  • memory/280-63-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/280-67-0x0000000075A11000-0x0000000075A13000-memory.dmp

    Filesize

    8KB

  • memory/280-60-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/280-56-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/280-59-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/280-57-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/836-54-0x0000000000FA0000-0x0000000000FDA000-memory.dmp

    Filesize

    232KB

  • memory/836-55-0x0000000000290000-0x0000000000298000-memory.dmp

    Filesize

    32KB

  • memory/1356-72-0x00000000012C0000-0x00000000012FA000-memory.dmp

    Filesize

    232KB

  • memory/1356-69-0x0000000000000000-mapping.dmp

  • memory/1364-79-0x000000000040813E-mapping.dmp

  • memory/1872-66-0x0000000000000000-mapping.dmp