Resubmissions

09/06/2024, 21:39

240609-1h2ydafh9310

09/06/2024, 15:20

240609-sqrhlsce799

Analysis

  • max time kernel
    91s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/06/2024, 15:20

General

  • Target
    ransom.exe
  • Size 8.4MB
  • Sample240609-sqrhlsce79
  • SHA256 294cca25a52a8ce7764f2504e1f65ad3ee0dd8d2e701bc910d12c2e24fb367d0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Renames multiple (320) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops startup file 2 IoCs
  • Loads dropped DLL 19 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 63 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ransom.exe
    "C:\Users\Admin\AppData\Local\Temp\ransom.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3728
    • C:\Users\Admin\AppData\Local\Temp\ransom.exe
      "C:\Users\Admin\AppData\Local\Temp\ransom.exe"
      2⤵
      • Drops startup file
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      PID:4544
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2968
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Drops startup file
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3352
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\msedge_installer.log
      1⤵
      • Opens file in notepad (likely ransom note)
      PID:4056

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          VCRUNTIME140.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\VCRUNTIME140.dll
          • Size 94KB
          • SHA256 ded5adaa94341e6c62aea03845762591666381dca30eb7c17261dd154121b83e
          • MD5 SHA1 SHA512 SSDEEP

          _bz2.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\_bz2.pyd
          • Size 77KB
          • SHA256 0897e209676f5835f62e5985d7793c884fd91b0cfdfaff893fc05176f2f82095
          • MD5 SHA1 SHA512 SSDEEP

          _cffi_backend.cp310-win_amd64.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\_cffi_backend.cp310-win_amd64.pyd
          • Size 179KB
          • SHA256 5763c1d29903567cde4d46355d3a7380d10143543986ca4eebfca4d22d991e3e
          • MD5 SHA1 SHA512 SSDEEP

          _ctypes.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\_ctypes.pyd
          • Size 116KB
          • SHA256 9ab1f8cbb50db3d9a00f74447a2275a89ec52d1139fc0a93010e59c412c2c850
          • MD5 SHA1 SHA512 SSDEEP

          _hashlib.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\_hashlib.pyd
          • Size 59KB
          • SHA256 2e30544d07f1c55d741b03992ea57d1aa519edaaa121e889f301a5b8b6557fe4
          • MD5 SHA1 SHA512 SSDEEP

          _lzma.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\_lzma.pyd
          • Size 150KB
          • SHA256 ce72d59a0e96077c9ea3f1fd7b011287248dc8d80fd3c16916a1d9040a9a941f
          • MD5 SHA1 SHA512 SSDEEP

          _socket.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\_socket.pyd
          • Size 73KB
          • SHA256 130de3506471878031aecc4c9d38355a4719edd3786f27262a724efc287a47b9
          • MD5 SHA1 SHA512 SSDEEP

          _ssl.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\_ssl.pyd
          • Size 152KB
          • SHA256 5a4c78adedf0bcb5fc422faac619b4c7b57e3d7ba4f2d47a98c1fb81a503b6b7
          • MD5 SHA1 SHA512 SSDEEP

          base_library.zip

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\base_library.zip
          • Size 812KB
          • SHA256 762591f4a42f9dc8b9e9a6c0ed6bd5c3b39875eeacc34a6bf078c18a3e735982
          • MD5 SHA1 SHA512 SSDEEP

          _bcrypt.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\bcrypt\_bcrypt.pyd
          • Size 294KB
          • SHA256 3d1c66bdcb4fa0b8e917895e1b4d62ee14260eaa1bd6fe908877c47585ec6127
          • MD5 SHA1 SHA512 SSDEEP

          top_level.txt

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\cryptography-38.0.1.dist-info\top_level.txt
          • Size 13B
          • SHA256 28d693f929f62b8bb135a11b7ba9987439f7a960cc969e32f8cb567c1ef79c97
          • MD5 SHA1 SHA512

          top_level.txt.skk

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\cryptography-38.0.1.dist-info\top_level.txt.skk
          • Size 100B
          • SHA256 966033e4fd8feb43db835a8dc7aedf40e36641cbf096301b97343febdbe99b5c
          • MD5 SHA1 SHA512

          _openssl.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\cryptography\hazmat\bindings\_openssl.pyd
          • Size 3.8MB
          • SHA256 da0dea85eb34de0e50ab1d343d33ed0a99b3af5e2f479d306fce5c0ed604b1d8
          • MD5 SHA1 SHA512 SSDEEP

          _rust.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\cryptography\hazmat\bindings\_rust.pyd
          • Size 1.6MB
          • SHA256 bca2dd906302a6a84e9aa5f41b06c4deef4fee139e861d5c538ba30bd4c40574
          • MD5 SHA1 SHA512 SSDEEP

          libcrypto-1_1.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\libcrypto-1_1.dll
          • Size 3.3MB
          • SHA256 9c0a0a11629cced6a064932e95a0158ee936739d75a56338702fed97cb0bad55
          • MD5 SHA1 SHA512 SSDEEP

          libffi-7.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\libffi-7.dll
          • Size 32KB
          • SHA256 f60dd9f2fcbd495674dfc1555effb710eb081fc7d4cae5fa58c438ab50405081
          • MD5 SHA1 SHA512 SSDEEP

          libssl-1_1.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\libssl-1_1.dll
          • Size 682KB
          • SHA256 ed1c8769f5096afd000fc730a37b11177fcf90890345071ab7fbceac684d571f
          • MD5 SHA1 SHA512 SSDEEP

          _psutil_windows.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\psutil\_psutil_windows.pyd
          • Size 65KB
          • SHA256 e10b73d6e13a5ae2624630f3d8535c5091ef403db6a00a2798f30874938ee996
          • MD5 SHA1 SHA512 SSDEEP

          python3.DLL

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\python3.DLL
          • Size 60KB
          • SHA256 84a29c369560c5175d22ee764fe8ada882ab6b37b6b10c005404153518a344ec
          • MD5 SHA1 SHA512 SSDEEP

          python310.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\python310.dll
          • Size 4.2MB
          • SHA256 8d0bec69554317ccf1796c505d749d5c9f3be74ccbfce1d9e4d5fe64a536ae9e
          • MD5 SHA1 SHA512 SSDEEP

          select.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI37282\select.pyd
          • Size 25KB
          • SHA256 cb643556c2dcdb957137b25c8a33855067e0d07547e547587c9886238253bfe5
          • MD5 SHA1 SHA512 SSDEEP

          desktop.ini.skk

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.skk
          • Size 312B
          • SHA256 4b7c3ae0577b4ec0900dbddbd5899347321957a48f4533571ee44ebe92df102f
          • MD5 SHA1 SHA512

          memory/3352-400-0x000001600EE30000-0x000001600EE31000-memory.dmp

          memory/3352-401-0x000001600EE30000-0x000001600EE31000-memory.dmp

          memory/3352-402-0x000001600EE30000-0x000001600EE31000-memory.dmp

          memory/3352-411-0x000001600EE30000-0x000001600EE31000-memory.dmp

          memory/3352-412-0x000001600EE30000-0x000001600EE31000-memory.dmp

          memory/3352-410-0x000001600EE30000-0x000001600EE31000-memory.dmp

          memory/3352-409-0x000001600EE30000-0x000001600EE31000-memory.dmp

          memory/3352-408-0x000001600EE30000-0x000001600EE31000-memory.dmp

          memory/3352-406-0x000001600EE30000-0x000001600EE31000-memory.dmp

          memory/3352-407-0x000001600EE30000-0x000001600EE31000-memory.dmp