Analysis

  • max time kernel
    283s
  • max time network
    286s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    17-12-2022 01:53

Errors

Reason
Machine shutdown

General

  • Target

    FINAL.exe

  • Size

    13.2MB

  • MD5

    8c9180cfa2862e68b9beaf9b9e14a1c2

  • SHA1

    09011f6b0b5d48e9bb61e65f10872fe4b344f66a

  • SHA256

    b8e6b01b8e7598bd8b01bedfe1232eb936a12f852a90a3a545bc2af7e4667c43

  • SHA512

    4657b171e3594370a8c9086bd2436b5ec7deaba73975856baafce4391582c6ce45d0820922706e0de3346bb85ffe8854fe419baa88a6cca83b94d67214bdf6c3

  • SSDEEP

    196608:7+ww4z5xjkyIte8YHX0QoLPT7M18ZKhib/sV83V+Uj3iI9NeTA4cxXD4JF:7+x4FSyI88Ekprw1/f8R3roTAY

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

windowsfirewall

C2

xmarvel.ddns.net:4782

2.58.56.188:4782

Mutex

hMAbT9pppBWPnLDPSK

Attributes
  • encryption_key

    iZ94RsK8uKM1BvRnYlBk

  • install_name

    wfmsc.exe

  • log_directory

    Logs

  • reconnect_delay

    1

  • startup_key

    windowsdefender

  • subdirectory

    windowsfirewall

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 6 IoCs
  • RevengeRAT

    Remote-access trojan with a wide range of capabilities.

  • Executes dropped EXE 2 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 6 IoCs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies registry class 2 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of FindShellTrayWindow 12 IoCs
  • Suspicious use of SendNotifyMessage 9 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FINAL.exe
    "C:\Users\Admin\AppData\Local\Temp\FINAL.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2004
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Blank Grabber.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Blank Grabber.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1740
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Blank Grabber.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Blank Grabber.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:548
    • C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
      "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\Desktop\CPN BIBLE.pdf"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1796
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1680
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "windowsdefender" /sc ONLOGON /tr "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:1292
  • C:\Windows\SysWOW64\DllHost.exe
    C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:1704
  • C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe"
    1⤵
      PID:1512
      • C:\Windows\system32\net.exe
        net user
        2⤵
          PID:2676
          • C:\Windows\system32\net1.exe
            C:\Windows\system32\net1 user
            3⤵
              PID:2688
          • C:\Windows\system32\net.exe
            net user Admin Winter$123445
            2⤵
              PID:2736
              • C:\Windows\system32\net1.exe
                C:\Windows\system32\net1 user Admin Winter$123445
                3⤵
                  PID:2748
              • C:\Windows\system32\net.exe
                net user Administrator Winter$12345
                2⤵
                  PID:2800
                  • C:\Windows\system32\net1.exe
                    C:\Windows\system32\net1 user Administrator Winter$12345
                    3⤵
                      PID:2812
                  • C:\Windows\system32\shutdown.exe
                    shutdown /r /t 0
                    2⤵
                    • Suspicious use of AdjustPrivilegeToken
                    PID:2880
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe"
                  1⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1528
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe"
                    2⤵
                    • Checks processor information in registry
                    PID:680
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe"
                  1⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1592
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe"
                    2⤵
                    • Checks processor information in registry
                    • Modifies registry class
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of FindShellTrayWindow
                    • Suspicious use of SendNotifyMessage
                    • Suspicious use of WriteProcessMemory
                    PID:2004
                    • C:\Program Files\Mozilla Firefox\firefox.exe
                      "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2004.0.1678663413\792799942" -parentBuildID 20200403170909 -prefsHandle 1192 -prefMapHandle 1184 -prefsLen 1 -prefMapSize 220106 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2004 "\\.\pipe\gecko-crash-server-pipe.2004" 1256 gpu
                      3⤵
                        PID:1728
                      • C:\Program Files\Mozilla Firefox\firefox.exe
                        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2004.3.687810588\880232974" -childID 1 -isForBrowser -prefsHandle 1652 -prefMapHandle 1648 -prefsLen 156 -prefMapSize 220106 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2004 "\\.\pipe\gecko-crash-server-pipe.2004" 1800 tab
                        3⤵
                          PID:284
                        • C:\Program Files\Mozilla Firefox\firefox.exe
                          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2004.13.1122570857\679799414" -childID 2 -isForBrowser -prefsHandle 2608 -prefMapHandle 2460 -prefsLen 6938 -prefMapSize 220106 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2004 "\\.\pipe\gecko-crash-server-pipe.2004" 2624 tab
                          3⤵
                            PID:2228
                      • C:\Program Files\Mozilla Firefox\firefox.exe
                        "C:\Program Files\Mozilla Firefox\firefox.exe"
                        1⤵
                        • Suspicious use of WriteProcessMemory
                        PID:1772
                        • C:\Program Files\Mozilla Firefox\firefox.exe
                          "C:\Program Files\Mozilla Firefox\firefox.exe"
                          2⤵
                          • Checks processor information in registry
                          PID:1236
                      • C:\Windows\system32\LogonUI.exe
                        "LogonUI.exe" /flags:0x0
                        1⤵
                          PID:2920
                        • C:\Windows\system32\AUDIODG.EXE
                          C:\Windows\system32\AUDIODG.EXE 0x544
                          1⤵
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3004
                        • C:\Windows\system32\LogonUI.exe
                          "LogonUI.exe" /flags:0x1
                          1⤵
                            PID:1540

                          Network

                          MITRE ATT&CK Matrix ATT&CK v6

                          Execution

                          Scheduled Task

                          1
                          T1053

                          Persistence

                          Scheduled Task

                          1
                          T1053

                          Privilege Escalation

                          Scheduled Task

                          1
                          T1053

                          Discovery

                          System Information Discovery

                          2
                          T1082

                          Query Registry

                          1
                          T1012

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • C:\Users\Admin\AppData\Local\Temp\_github.com..Blank_c17402\python311.dll
                            Filesize

                            1.6MB

                            MD5

                            8534c15a4eb10120c60c9233d2693dec

                            SHA1

                            126a52080ecaec660bfd56f8e3c76fb0f8b664c8

                            SHA256

                            fd6e6c75180af0d08c9e78831229468c7047003dd995303004f66891fccec392

                            SHA512

                            1064b385a5d5f7e8061913321bca64865ed5569b4629b6a2728852ade84857f6f370d823b86542fa5943d1548ec55e65029eba7a94285a6d3c00d106c0e868a0

                          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Blank Grabber.exe
                            Filesize

                            7.9MB

                            MD5

                            490ecd8f11af9825f52d4d8e7cc23b5e

                            SHA1

                            190cc0eb80e9661526ccf35955e90487c21247a2

                            SHA256

                            d65e380cf242a95cecb67b7dcd7fb4fda715bd7ab7b42a53255fe1521e00c3b5

                            SHA512

                            6f09348dcc08522588158e0988fdf19eae30a96e995fa50d784745ec0a301415a3e7d528264517d484ee7791011f23c0072afae79c8212cfa7953528a8d02426

                          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Blank Grabber.exe
                            Filesize

                            7.9MB

                            MD5

                            490ecd8f11af9825f52d4d8e7cc23b5e

                            SHA1

                            190cc0eb80e9661526ccf35955e90487c21247a2

                            SHA256

                            d65e380cf242a95cecb67b7dcd7fb4fda715bd7ab7b42a53255fe1521e00c3b5

                            SHA512

                            6f09348dcc08522588158e0988fdf19eae30a96e995fa50d784745ec0a301415a3e7d528264517d484ee7791011f23c0072afae79c8212cfa7953528a8d02426

                          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Blank Grabber.exe
                            Filesize

                            7.9MB

                            MD5

                            490ecd8f11af9825f52d4d8e7cc23b5e

                            SHA1

                            190cc0eb80e9661526ccf35955e90487c21247a2

                            SHA256

                            d65e380cf242a95cecb67b7dcd7fb4fda715bd7ab7b42a53255fe1521e00c3b5

                            SHA512

                            6f09348dcc08522588158e0988fdf19eae30a96e995fa50d784745ec0a301415a3e7d528264517d484ee7791011f23c0072afae79c8212cfa7953528a8d02426

                          • C:\Users\Admin\Desktop\CPN BIBLE.pdf
                            Filesize

                            437KB

                            MD5

                            072bde13a5776d6b4e9872f7abce20c2

                            SHA1

                            257fe039b6eaa22b094269833cd96e9c38179046

                            SHA256

                            a2661e745c48a2ad8d6ad29490dfbf08f34a6fe00ae878325f5a1fdc1195c4ed

                            SHA512

                            cfca93a53717ffb5b9d918893f6b143b5d22c9cd4a56150649788f00b9d0d1849606034644c06bdf84700ad064292afeba56a1e7eaab76b6fe061ef678359a54

                          • C:\Users\Admin\Desktop\Federal Reserve.jpg
                            Filesize

                            48KB

                            MD5

                            8b515a483fb8addfa245c4eef208719e

                            SHA1

                            c2d4a921ff4b9717a13780e84b6f24cce7c98274

                            SHA256

                            6daa510f4f587955e07a728dd75fb63d591fae136686dc73381fc62d54771096

                            SHA512

                            0b7f4c97835a1db3017937b6224f9e38ab0a938de77b26d723a16662fa8d455376a03ce52ded91ed9b106f27c481074d2e1c5b30271fdcc23b3f0b152c7183dd

                          • \??\PIPE\samr
                            MD5

                            d41d8cd98f00b204e9800998ecf8427e

                            SHA1

                            da39a3ee5e6b4b0d3255bfef95601890afd80709

                            SHA256

                            e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                            SHA512

                            cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                          • \??\PIPE\samr
                            MD5

                            d41d8cd98f00b204e9800998ecf8427e

                            SHA1

                            da39a3ee5e6b4b0d3255bfef95601890afd80709

                            SHA256

                            e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                            SHA512

                            cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                          • \Users\Admin\AppData\Local\Temp\_github.com..Blank_c17402\python311.dll
                            Filesize

                            1.6MB

                            MD5

                            8534c15a4eb10120c60c9233d2693dec

                            SHA1

                            126a52080ecaec660bfd56f8e3c76fb0f8b664c8

                            SHA256

                            fd6e6c75180af0d08c9e78831229468c7047003dd995303004f66891fccec392

                            SHA512

                            1064b385a5d5f7e8061913321bca64865ed5569b4629b6a2728852ade84857f6f370d823b86542fa5943d1548ec55e65029eba7a94285a6d3c00d106c0e868a0

                          • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Blank Grabber.exe
                            Filesize

                            7.9MB

                            MD5

                            490ecd8f11af9825f52d4d8e7cc23b5e

                            SHA1

                            190cc0eb80e9661526ccf35955e90487c21247a2

                            SHA256

                            d65e380cf242a95cecb67b7dcd7fb4fda715bd7ab7b42a53255fe1521e00c3b5

                            SHA512

                            6f09348dcc08522588158e0988fdf19eae30a96e995fa50d784745ec0a301415a3e7d528264517d484ee7791011f23c0072afae79c8212cfa7953528a8d02426

                          • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Blank Grabber.exe
                            Filesize

                            7.9MB

                            MD5

                            490ecd8f11af9825f52d4d8e7cc23b5e

                            SHA1

                            190cc0eb80e9661526ccf35955e90487c21247a2

                            SHA256

                            d65e380cf242a95cecb67b7dcd7fb4fda715bd7ab7b42a53255fe1521e00c3b5

                            SHA512

                            6f09348dcc08522588158e0988fdf19eae30a96e995fa50d784745ec0a301415a3e7d528264517d484ee7791011f23c0072afae79c8212cfa7953528a8d02426

                          • memory/548-70-0x000007FEF6420000-0x000007FEF6A07000-memory.dmp
                            Filesize

                            5.9MB

                          • memory/548-64-0x0000000000000000-mapping.dmp
                          • memory/1292-91-0x0000000000000000-mapping.dmp
                          • memory/1680-81-0x0000000000400000-0x000000000044E000-memory.dmp
                            Filesize

                            312KB

                          • memory/1680-89-0x0000000000400000-0x000000000044E000-memory.dmp
                            Filesize

                            312KB

                          • memory/1680-87-0x0000000000400000-0x000000000044E000-memory.dmp
                            Filesize

                            312KB

                          • memory/1680-85-0x000000000044943E-mapping.dmp
                          • memory/1680-84-0x0000000000400000-0x000000000044E000-memory.dmp
                            Filesize

                            312KB

                          • memory/1680-77-0x0000000000400000-0x000000000044E000-memory.dmp
                            Filesize

                            312KB

                          • memory/1680-78-0x0000000000400000-0x000000000044E000-memory.dmp
                            Filesize

                            312KB

                          • memory/1680-80-0x0000000000400000-0x000000000044E000-memory.dmp
                            Filesize

                            312KB

                          • memory/1740-61-0x000007FEFC1B1000-0x000007FEFC1B3000-memory.dmp
                            Filesize

                            8KB

                          • memory/1740-59-0x0000000000000000-mapping.dmp
                          • memory/1796-63-0x0000000000000000-mapping.dmp
                          • memory/1796-82-0x0000000002880000-0x00000000028F6000-memory.dmp
                            Filesize

                            472KB

                          • memory/2004-56-0x0000000000680000-0x00000000006B0000-memory.dmp
                            Filesize

                            192KB

                          • memory/2004-74-0x0000000002C80000-0x0000000002C9A000-memory.dmp
                            Filesize

                            104KB

                          • memory/2004-54-0x0000000000B20000-0x000000000185C000-memory.dmp
                            Filesize

                            13.2MB

                          • memory/2004-57-0x0000000000440000-0x0000000000458000-memory.dmp
                            Filesize

                            96KB

                          • memory/2004-75-0x0000000002C60000-0x0000000002C66000-memory.dmp
                            Filesize

                            24KB

                          • memory/2004-55-0x0000000075831000-0x0000000075833000-memory.dmp
                            Filesize

                            8KB

                          • memory/2676-92-0x0000000000000000-mapping.dmp
                          • memory/2688-93-0x0000000000000000-mapping.dmp
                          • memory/2736-94-0x0000000000000000-mapping.dmp
                          • memory/2748-95-0x0000000000000000-mapping.dmp
                          • memory/2800-97-0x0000000000000000-mapping.dmp
                          • memory/2812-98-0x0000000000000000-mapping.dmp
                          • memory/2880-100-0x0000000000000000-mapping.dmp