Resubmissions

08/06/2024, 18:20

240608-wyz2hafb4210

08/06/2024, 18:17

240608-ww7cssec5w10

08/06/2024, 18:11

240608-ws439seb9v10

19/05/2024, 22:52

240519-2txcpsfe7w

19/05/2024, 22:48

240519-2rh3asfb6210

General

  • Target
    XWorm-Rat-Remote-Administration-Tool--main.zip
  • Size 5.0MB
  • Sample240608-ww7cssec5w
  • SHA256 8a7d20fb5bc7ef8b02ab6e11ef78ebc0a31ba5376bd97d40fe5d1da521324556
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • asyncrat

Version
  • 1.0.7

Botnet
  • def

C2
  • 37.18.62.18:8060

Mutex
  • era2312swe12-1213rsgdkms23

Attributes
  • delay

    1

  • install

    true

  • install_file

    CCXProcess.exe

  • install_folder

    %Temp%

aes.plain

Targets

    • Target
      XWorm-Rat-Remote-Administration-Tool--main.zip
    • Size 5.0MB
    • SHA256 8a7d20fb5bc7ef8b02ab6e11ef78ebc0a31ba5376bd97d40fe5d1da521324556
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      XWorm-Rat-Remote-Administration-Tool--main/CMSTP.dll
    • Size 42KB
    • SHA256 1ae19061164d5ee2cf10866d99765d9f62e4f65a61581eccde5c2e938e454a73
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      XWorm-Rat-Remote-Administration-Tool--main/DisAsClaimer.exe
    • Size 12KB
    • SHA256 1ac4832667db7044b1077e447d587a14dcd1270e71b8d34157a77d515b61c4b3
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      XWorm-Rat-Remote-Administration-Tool--main/FastColoredTextBox.dll
    • Size 333KB
    • SHA256 3701b19ccdac79b880b197756a972027e2ac609ebed36753bd989367ea4ef519
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      XWorm-Rat-Remote-Administration-Tool--main/Fixer.bat
    • Size 122B
    • SHA256 a11703fd47d16020fa099a95bb4e46247d32cf8821dc1826e77a971cdd3c4c55
    • MD5 SHA1 SHA512
    Score
    5/10
    • Drops file in System32 directory

    • Target
      XWorm-Rat-Remote-Administration-Tool--main/GeoIP.dat
    • Size 1.0MB
    • SHA256 6c15c5f8e3faec8adf4321fd8f9d62f3f4dd645dafd0f9f6c52b118001654d36
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      XWorm-Rat-Remote-Administration-Tool--main/Guna.UI2.dll
    • Size 2.1MB
    • SHA256 84199a22c8669a39800272c3da0d969ec4e8d77d67b9d324ca049953a5042c71
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      XWorm-Rat-Remote-Administration-Tool--main/NAudio.dll
    • Size 502KB
    • SHA256 81b3f1dc3f1eac9762b8a292751a44b64b87d0d4c3982debfdd2621012186451
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      XWorm-Rat-Remote-Administration-Tool--main/README.md
    • Size 1KB
    • SHA256 3bab4c7a92515f24f23cdec831c628cd842887e2cc702e9eed3ef1a4c8c74f67
    • MD5 SHA1 SHA512
    Score
    3/10
    • Target
      XWorm-Rat-Remote-Administration-Tool--main/Uploader.php
    • Size 747B
    • SHA256 6e69ff9be3bade50f81e40f518a8c8ca83e45c8016cae41404068e924f3cd7a3
    • MD5 SHA1 SHA512
    Score
    3/10
    • Target
      XWorm-Rat-Remote-Administration-Tool--main/XHVNC.exe
    • Size 1.9MB
    • SHA256 e92707537fe99713752f3d3f479fa68a0c8dd80439c13a2bb4ebb36a952b63fd
    • MD5 SHA1 SHA512 SSDEEP
    Score
    8/10
    • Modifies Installed Components in the registry

    • Executes dropped EXE

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Suspicious use of SetThreadContext

    • Target
      XWorm-Rat-Remote-Administration-Tool--main/XWorm-RAT-V2.1-builder.exe
    • Size 3.2MB
    • SHA256 b6fb77dfd00695678b06ed122523a0b067077fe69113f395661cd3be748d9f7c
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      XWorm-Rat-Remote-Administration-Tool--main/XWormUI.exe
    • Size 52KB
    • SHA256 d0dd06d26f09eed4755de33c63e29aeb8161cd9b0ca123af3474c5594df57ec1
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Target
      XWorm-Rat-Remote-Administration-Tool--main/dnlib.dll
    • Size 1.1MB
    • SHA256 e8bc7a627149386cb3cf714ae0101f69440f72cf2e7468a677b727b32aaed755
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      XWorm-Rat-Remote-Administration-Tool--main/dnlib.exe
    • Size 12KB
    • SHA256 e2bddf56324addac02678a7fd8d9c3da24ad55132883ad826a1a60eaf4e4a034
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Async RAT payload

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks

static1

agilenetratdefasyncrat
Score
10/10

behavioral1

Score
1/10

behavioral2

Score
1/10

behavioral3

Score
1/10

behavioral4

Score
1/10

behavioral5

Score
1/10

behavioral6

Score
1/10

behavioral7

Score
1/10

behavioral8

Score
1/10

behavioral9

Score
1/10

behavioral10

Score
5/10

behavioral11

Score
3/10

behavioral12

Score
3/10

behavioral13

Score
1/10

behavioral14

Score
1/10

behavioral15

Score
1/10

behavioral16

Score
1/10

behavioral17

Score
3/10

behavioral18

Score
3/10

behavioral19

Score
3/10

behavioral20

Score
3/10

behavioral21

agilenetpersistence
Score
8/10

behavioral22

agilenetpersistence
Score
8/10

behavioral23

Score
1/10

behavioral24

Score
1/10

behavioral25

asyncratdefrat
Score
10/10

behavioral26

asyncratdefrat
Score
10/10

behavioral27

Score
1/10

behavioral28

Score
1/10

behavioral29

Score
1/10

behavioral30

asyncratdefrat
Score
10/10