Analysis

  • max time kernel
    137s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-03-2023 08:18

General

  • Target

    641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe

  • Size

    760KB

  • MD5

    9f700a5aa12ce068b6d7a78ab785b17a

  • SHA1

    25742162d94f4479d557fb659e3a3280d91a1580

  • SHA256

    641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8

  • SHA512

    d6a4878db5e914dfbe763ae6e1ec9007e4c710bae89a78a714adc0efd05f772668ee4bee1ad1fcd4db61613f2438d0dfd529bf91b03af50c05e98f487f880938

  • SSDEEP

    12288:kIAAhJZaF75GF2ibA6Sm/HO5J9MdpNNR36UH+4ahldt8VU2EfPrHLEgkMnJ6PM6:LAxb8AJovPR36UH+4C6u2E3Tzwr

Score
10/10

Malware Config

Extracted

Family

limerat

Wallets

1LLUV51XQKqq94X965Cc6uGPXeZEGSqCdV

Attributes
  • aes_key

    NYANCAT

  • antivm

    false

  • c2_url

    https://pastebin.com/raw/4pByu6u5

  • delay

    3

  • download_payload

    false

  • install

    false

  • install_name

    Wservices.exe

  • main_folder

    AppData

  • pin_spread

    false

  • sub_folder

    \

  • usb_spread

    true

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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 1 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 3 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe
    "C:\Users\Admin\AppData\Local\Temp\641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1500
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KzSuNlCQoYKnH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3558.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4752
    • C:\Users\Admin\AppData\Local\Temp\641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe
      "C:\Users\Admin\AppData\Local\Temp\641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:368

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\641fe9f18ebb130d7a6b63ca7cc7fde7092e0a77447997009e5f23db698771e8.exe.log

    Filesize

    1KB

    MD5

    17573558c4e714f606f997e5157afaac

    SHA1

    13e16e9415ceef429aaf124139671ebeca09ed23

    SHA256

    c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

    SHA512

    f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

  • C:\Users\Admin\AppData\Local\Temp\tmp3558.tmp

    Filesize

    1KB

    MD5

    9544f541e7a2bbcab1d37542e4e15a50

    SHA1

    9ff39f4ef368e6d991febe10debf234dd7a84d67

    SHA256

    f09bcf14e8db5d5c28c219bfe98903110f196e53fc6d821d3f9b10f5be716060

    SHA512

    951e9f7e6b62793480d624002b24eb1c8069c6115b9637ddaf42bec08b4068d64ba0ea1ff5add57d609c0898b27d4f7ba9f57f76ae11cf8980b8f9aeb9d37576

  • memory/368-151-0x00000000057C0000-0x00000000057D0000-memory.dmp

    Filesize

    64KB

  • memory/368-150-0x00000000057C0000-0x00000000057D0000-memory.dmp

    Filesize

    64KB

  • memory/368-149-0x00000000056A0000-0x0000000005706000-memory.dmp

    Filesize

    408KB

  • memory/368-146-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/1500-136-0x0000000005AA0000-0x0000000005B32000-memory.dmp

    Filesize

    584KB

  • memory/1500-140-0x0000000005950000-0x0000000005960000-memory.dmp

    Filesize

    64KB

  • memory/1500-139-0x0000000005950000-0x0000000005960000-memory.dmp

    Filesize

    64KB

  • memory/1500-138-0x0000000005C90000-0x0000000005CE6000-memory.dmp

    Filesize

    344KB

  • memory/1500-137-0x0000000005990000-0x000000000599A000-memory.dmp

    Filesize

    40KB

  • memory/1500-133-0x0000000000F10000-0x0000000000FD2000-memory.dmp

    Filesize

    776KB

  • memory/1500-135-0x0000000006050000-0x00000000065F4000-memory.dmp

    Filesize

    5.6MB

  • memory/1500-134-0x00000000059D0000-0x0000000005A6C000-memory.dmp

    Filesize

    624KB