Analysis

  • max time kernel
    152s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    01-01-2024 15:12

General

  • Target

    71506a3322b0e0bc6fc2c1a1f0ac844a82a8c3fbbfeb4e6452013b4ade7610fb.exe

  • Size

    597KB

  • MD5

    ee754ea777505e2fd2870afb325f50e8

  • SHA1

    be8724e9bd48665ae0c6eedbaf8de23e5987dc45

  • SHA256

    71506a3322b0e0bc6fc2c1a1f0ac844a82a8c3fbbfeb4e6452013b4ade7610fb

  • SHA512

    a6b4acf8c94f1284458a950582ef18adfeac1496e26f537ea21c22f3574b3cffa48e547ea1b9804c45633e12b53c3f1ac1e2d536e150c84ddcbfc9223f525d85

  • SSDEEP

    12288:td5UKfiOLkxMAgyJ/4zBSqGuKCYminksnkyr2OMnVVs4OgcwdPsc:X5LAHPDuKC8n/dCD9Zsc

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

Ransom Note
All your files have been encrypted! All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail GetDataBack@fros.cc Write this ID in the title of your message F3A6D0AA In case of no answer in 24 hours write us to theese e-mails: GetDataBack@fros.cc You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files. Free decryption as guarantee Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) How to obtain Bitcoins The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, it may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.
Emails

GetDataBack@fros.cc

Signatures

  • Detect ZGRat V2 1 IoCs
  • Dharma

    Dharma is a ransomware that uses security software installation to hide malicious activities.

  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (312) files with added filename extension

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

  • Drops startup file 5 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Drops desktop.ini file(s) 64 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 2 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\71506a3322b0e0bc6fc2c1a1f0ac844a82a8c3fbbfeb4e6452013b4ade7610fb.exe
    "C:\Users\Admin\AppData\Local\Temp\71506a3322b0e0bc6fc2c1a1f0ac844a82a8c3fbbfeb4e6452013b4ade7610fb.exe"
    1⤵
    • Maps connected drives based on registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2856
    • C:\Windows\SysWOW64\msiexec.exe
      C:\Windows\SysWOW64\msiexec.exe
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2652
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1256
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          4⤵
            PID:2940
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:2096
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3888
          • C:\Windows\system32\mode.com
            mode con cp select=1251
            4⤵
              PID:3992
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              4⤵
              • Interacts with shadow copies
              PID:3808
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            3⤵
            • Modifies Internet Explorer settings
            PID:3764
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            3⤵
            • Modifies Internet Explorer settings
            PID:3032
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1556

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Persistence

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Privilege Escalation

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Defense Evasion

      Indicator Removal

      2
      T1070

      File Deletion

      2
      T1070.004

      Modify Registry

      2
      T1112

      Discovery

      Query Registry

      1
      T1012

      Peripheral Device Discovery

      1
      T1120

      System Information Discovery

      1
      T1082

      Impact

      Inhibit System Recovery

      2
      T1490

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\OWOW64WW.cab.id-F3A6D0AA.[GetDataBack@fros.cc].gdb
        Filesize

        15.9MB

        MD5

        bbf29f73e548db71fa861fa8c1dea881

        SHA1

        588d477c909ec8befe4844587da6928ffda22c11

        SHA256

        f8e6f2623a7b42a60f87c8d72a9981f9e39f0f129a9349c6dbcc8f8d9d610941

        SHA512

        ff9bee53244502b5560ce2de7da0036d6dfcbd64e1bde6073725a259814ae614067c47c9a553ef5768f0261b486832b32515a3551f2c44e7b99ae17566e4b829

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
        Filesize

        13KB

        MD5

        63134c76187b813b09c2db99787b41e3

        SHA1

        fd8c69ea82d80f8648668a784bac71eea771eab4

        SHA256

        33a62caba2eec5f3966c5b3f01d8b6cf68553c70cceb435eda04d2ae16e9bee2

        SHA512

        df450f97d65ffb9f75e95a25a80e505e5cfe506753d7489da5e38c736ffa1e10a304101a971a50ec4d375fc1951652c50e230714a027e9ab5df547f1b6898a8d

      • memory/2652-12-0x0000000000400000-0x0000000000429000-memory.dmp
        Filesize

        164KB

      • memory/2652-38-0x0000000000400000-0x0000000000429000-memory.dmp
        Filesize

        164KB

      • memory/2652-22-0x0000000000400000-0x0000000000429000-memory.dmp
        Filesize

        164KB

      • memory/2652-17-0x0000000000400000-0x0000000000429000-memory.dmp
        Filesize

        164KB

      • memory/2652-13-0x00000000000E0000-0x00000000000E1000-memory.dmp
        Filesize

        4KB

      • memory/2652-11-0x0000000000400000-0x0000000000429000-memory.dmp
        Filesize

        164KB

      • memory/2652-9-0x0000000000400000-0x0000000000429000-memory.dmp
        Filesize

        164KB

      • memory/2652-10-0x0000000000400000-0x0000000000429000-memory.dmp
        Filesize

        164KB

      • memory/2856-8-0x00000000049A0000-0x00000000049E0000-memory.dmp
        Filesize

        256KB

      • memory/2856-7-0x00000000049A0000-0x00000000049E0000-memory.dmp
        Filesize

        256KB

      • memory/2856-1-0x0000000074480000-0x0000000074B6E000-memory.dmp
        Filesize

        6.9MB

      • memory/2856-6-0x0000000074480000-0x0000000074B6E000-memory.dmp
        Filesize

        6.9MB

      • memory/2856-4-0x0000000004720000-0x0000000004764000-memory.dmp
        Filesize

        272KB

      • memory/2856-3-0x00000000049A0000-0x00000000049E0000-memory.dmp
        Filesize

        256KB

      • memory/2856-2-0x00000000049A0000-0x00000000049E0000-memory.dmp
        Filesize

        256KB

      • memory/2856-9214-0x0000000074480000-0x0000000074B6E000-memory.dmp
        Filesize

        6.9MB

      • memory/2856-0-0x00000000000F0000-0x000000000018C000-memory.dmp
        Filesize

        624KB