Overview

overview

10

Static

static

SATURN_RANSOM.exe

windows7_x64

10

SATURN_RANSOM.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    115s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    30-04-2022 19:52

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General

  • Target

    SATURN_RANSOM.exe

  • Size

    338KB

  • MD5

    bbd4c2d2c72648c8f871b36261be23fd

  • SHA1

    77c525e6b8a5760823ad6036e60b3fa244db8e42

  • SHA256

    9e87f069de22ceac029a4ac56e6305d2df54227e6b0f0b3ecad52a01fbade021

  • SHA512

    38f2ff3b7ff6faa63ef0a3200e0dbb9e48e1d404a065f6919cb6d245699479896a42316f299c33c8cc068922934c64f8aa06c88b000d1676870c1d0c0f18e14a

Score
10/10
gozi_rm3bankerevasionransomwarespywarestealertrojan

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\#DECRYPT_MY_FILES#.txt

Ransom Note
S A T U R N All of your files have been encrypted! To Decrypt your files follow these steps: #---------------------------------------------# 1. Download and install the "Tor Browser" from https://www.torproject.org 2. Run it. 3. In the Tor Browser, open website: http://su34pwhpcafeiztt.onion 4. Follow the instructions on the page #---------------------------------------------#
URLs

http://su34pwhpcafeiztt.onion

Extracted

Path

C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\#DECRYPT_MY_FILES#.html

Ransom Note
<html> <title>S A T U R N</title> <center> <body> <h1>S A T U R N</h1> <h4>Your documents, photos, databases, and other important files have been encrypted!</h4> <br /> To Decrypt your files follow these instructions: <br /> <div> <h4>1. Download and Install Tor Browser from <a href=https://www.torproject.org/>https://www.torproject.org/</a></h4> <br /> <h4>2. Run the browser</h4> <br /> <h4>3. In the Tor Browser, open website:</h3> <div style="background-color: #d9d9d9; margin-left: 20px; margin-right: 20px; padding-bottom: 8px; padding-left: 8px; padding-right: 8px; padding-top: 8px;"> </a><b>http://su34pwhpcafeiztt.onion</b><br/> </div> <h4>4. Follow the instructions at this website</h4> </div> </body> </center> </html> <style> html { background-color: white; font-family: Helvetica, sans-serif; } div { background-color: #f2f2f2; width: 80: %; padding: 25px; margin: 25px; overflow:hidden; } </style>

Signatures

  • Gozi RM3

    A heavily modified version of Gozi using RM3 loader.

    bankertrojangozi_rm3
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Enumerates VirtualBox registry keys 2 TTPs
    evasion
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • Modifies extensions of user files 33 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
    ransomware
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies Internet Explorer settings 1 TTPs 36 IoCs
    adwarespyware
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SATURN_RANSOM.exe
    "C:\Users\Admin\AppData\Local\Temp\SATURN_RANSOM.exe"
    1⤵
    • Modifies extensions of user files
    • Checks BIOS information in registry
    • Drops startup file
    • Sets desktop wallpaper using registry
    • Suspicious use of WriteProcessMemory
    PID:632
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C vssadmin.exe delete shadows /all /quiet & wmic.exe shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1940
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1920
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic.exe shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1988
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\#DECRYPT_MY_FILES#.txt
      2⤵
        PID:1736
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\Desktop\#DECRYPT_MY_FILES#.vbs"
        2⤵
          PID:1000
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\#DECRYPT_MY_FILES#.html
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1884
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1884 CREDAT:275457 /prefetch:2
            3⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:692
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /C ping 1.1.1.1 -n 1 -w 3000 > Nul & Del "C:\Users\Admin\AppData\Local\Temp\SATURN_RANSOM.exe"
          2⤵
          • Deletes itself
          • Suspicious use of WriteProcessMemory
          PID:1844
          • C:\Windows\SysWOW64\PING.EXE
            ping 1.1.1.1 -n 1 -w 3000
            3⤵
            • Runs ping.exe
            PID:1400
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:992
      • C:\Windows\SysWOW64\DllHost.exe
        C:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}
        1⤵
          PID:1952
        • C:\Windows\system32\AUDIODG.EXE
          C:\Windows\system32\AUDIODG.EXE 0x560
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1996

        Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\8P9348Z5.txt
          Filesize

          595B

          MD5

          c4745f744850df2fc2177aafb05522b6

          SHA1

          2604131523d98865041b1f3fa0dad83cb4bbc744

          SHA256

          17857391d5e09074e7e87abe4d817118a20eb784718db044049da122c3a9024e

          SHA512

          e8a69235d0e49a92b015350eb37137db3c995c83cc309dcd192040dcbb23e616f4218c58d6e9360ab385202b95d6639e4a1d4100c4b9154423178690192a7c4f

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        • C:\Users\Admin\Desktop\#DECRYPT_MY_FILES#.html
          Filesize

          983B

          MD5

          81a5c46ac3078e69ee370e929c738602

          SHA1

          404c83c60bf8c5c711be2e99286549c55fed3368

          SHA256

          d6e6ad1b9a348ccab1255ccd894394aec921aa4ecbef55dec17cacdd8c5cd212

          SHA512

          5850a41591a39a84360db47992e360a4f618a28e949e49576cbe10bc624110665d3b1c14f0cfeb9197f567d10cbbe0cedaa9a9a9c281c426b9733f1e9a0614d0

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        • C:\Users\Admin\Desktop\#DECRYPT_MY_FILES#.txt
          Filesize

          407B

          MD5

          f3d19c544c10a8337a7d9f7aef079a43

          SHA1

          252612bbdbdbe790853fe560ce5ce8e1df5fcdc5

          SHA256

          b660c9236f4d6d9b62eb04b40599e852f979dd3dbfd1d03e545a287fe8e5d32b

          SHA512

          c5cd69e7134f6d587d0823f6e7f9e5ba6affd75f5398fcea96e299dfb57996234ba87abe4632b2de807a4b79bbafd1b1132ae55b18a815eb8c4112b48942fb1b

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        • C:\Users\Admin\Desktop\#DECRYPT_MY_FILES#.vbs
          Filesize

          185B

          MD5

          23e0e8c821b40253c04d561a6d06e253

          SHA1

          5df1808c8485ad1d90f1431adfa2694dbb1ed693

          SHA256

          54905816b33af2b53b2e127e0a7db664d126700b3fdd360894b9d924544f639a

          SHA512

          87a57f1615db68d57381b1a8602c92e57e3a8bf447ed842f410e50efd13a7f7ba44998b00d5e54238f09cad24ffe59c3aa788c1390364c465c761f3da6a688e8

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        • memory/632-54-0x0000000075391000-0x0000000075393000-memory.dmp

          Filesize

          8KB

          Download