Analysis

  • max time kernel
    121s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    27-05-2024 19:52

General

  • Target

    2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe

  • Size

    3.2MB

  • MD5

    6c16807e4417e60366cde4515d148ab3

  • SHA1

    b8212729ae453b48531c5331cfdaea3aa213cf85

  • SHA256

    2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb

  • SHA512

    eb448d72c2d7d74cae67cac46ebc0262e50113b40164d0c9837e4e0d481c23038f85a414dd92561fdbe5958ecdbaa86e8cdd921cc1cc2571eb96f9dd76cc2efe

  • SSDEEP

    49152:6oHBs26nkjh/a3LlwLkl6cV0ymGIj5y60K9F8AA/qDTvyNUjqwZjAN+68OxcIzQW:9B6Wh/9L3clIVy6RwA29NGoN+3OWIzQ

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

1`:4782

Mutex

af2aa588-6605-4638-8da1-ae434f48b4a8

Attributes
  • encryption_key

    45ADA9B733F36F800D08E295E8F812611F35D087

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 9 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 9 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 9 IoCs
  • Detects executables containing common artifacts observed in infostealers 9 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to get system information.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 4 IoCs

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

  • Runs ping.exe 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
    "C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2192
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" (Get-CimInstance -ClassName Win32_ComputerSystem).TotalPhysicalMemory
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1616
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /C schtasks /create /tn \ /tr "C:\Users\Admin\AppData\Roaming\.exe" /st 00:00 /du 9999:59 /sc once /ri 30 /rl HIGHEST /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2112
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /tn \ /tr "C:\Users\Admin\AppData\Roaming\.exe" /st 00:00 /du 9999:59 /sc once /ri 30 /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:2728
    • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
      #by-unknown
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2780
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\PjnjGGAm1qn7.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2572
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
            PID:2528
          • C:\Windows\SysWOW64\PING.EXE
            ping -n 10 localhost
            4⤵
            • Runs ping.exe
            PID:2536
          • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
            "C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe"
            4⤵
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2568
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "powershell" (Get-CimInstance -ClassName Win32_ComputerSystem).TotalPhysicalMemory
              5⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2212
            • C:\Windows\SysWOW64\cmd.exe
              "cmd" /C schtasks /create /tn \ /tr "C:\Users\Admin\AppData\Roaming\.exe" /st 00:00 /du 9999:59 /sc once /ri 30 /rl HIGHEST /f
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:2968
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /create /tn \ /tr "C:\Users\Admin\AppData\Roaming\.exe" /st 00:00 /du 9999:59 /sc once /ri 30 /rl HIGHEST /f
                6⤵
                • Creates scheduled task(s)
                PID:2988
            • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
              #by-unknown
              5⤵
                PID:2372
              • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
                #by-unknown
                5⤵
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of FindShellTrayWindow
                • Suspicious use of SendNotifyMessage
                • Suspicious use of WriteProcessMemory
                PID:2276
                • C:\Windows\SysWOW64\cmd.exe
                  cmd /c ""C:\Users\Admin\AppData\Local\Temp\8xg1836q38ww.bat" "
                  6⤵
                    PID:1276
                    • C:\Windows\SysWOW64\chcp.com
                      chcp 65001
                      7⤵
                        PID:1952
                      • C:\Windows\SysWOW64\PING.EXE
                        ping -n 10 localhost
                        7⤵
                        • Runs ping.exe
                        PID:2752
                      • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
                        "C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe"
                        7⤵
                        • Suspicious use of SetThreadContext
                        PID:304
                        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                          "powershell" (Get-CimInstance -ClassName Win32_ComputerSystem).TotalPhysicalMemory
                          8⤵
                          • Command and Scripting Interpreter: PowerShell
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          PID:552
                        • C:\Windows\SysWOW64\cmd.exe
                          "cmd" /C schtasks /create /tn \ /tr "C:\Users\Admin\AppData\Roaming\.exe" /st 00:00 /du 9999:59 /sc once /ri 30 /rl HIGHEST /f
                          8⤵
                            PID:2140
                            • C:\Windows\SysWOW64\schtasks.exe
                              schtasks /create /tn \ /tr "C:\Users\Admin\AppData\Roaming\.exe" /st 00:00 /du 9999:59 /sc once /ri 30 /rl HIGHEST /f
                              9⤵
                              • Creates scheduled task(s)
                              PID:2612
                          • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
                            #by-unknown
                            8⤵
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of FindShellTrayWindow
                            • Suspicious use of SendNotifyMessage
                            PID:1920
                            • C:\Windows\SysWOW64\cmd.exe
                              cmd /c ""C:\Users\Admin\AppData\Local\Temp\dziUUBVLQgLl.bat" "
                              9⤵
                                PID:1636
                                • C:\Windows\SysWOW64\chcp.com
                                  chcp 65001
                                  10⤵
                                    PID:836
                                  • C:\Windows\SysWOW64\PING.EXE
                                    ping -n 10 localhost
                                    10⤵
                                    • Runs ping.exe
                                    PID:2288
                                  • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
                                    "C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe"
                                    10⤵
                                    • Suspicious behavior: EnumeratesProcesses
                                    • Suspicious use of AdjustPrivilegeToken
                                    PID:448
                                    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                                      "powershell" (Get-CimInstance -ClassName Win32_ComputerSystem).TotalPhysicalMemory
                                      11⤵
                                      • Command and Scripting Interpreter: PowerShell
                                      • Suspicious behavior: EnumeratesProcesses
                                      • Suspicious use of AdjustPrivilegeToken
                                      PID:2412
                                    • C:\Windows\SysWOW64\cmd.exe
                                      "cmd" /C schtasks /create /tn \ /tr "C:\Users\Admin\AppData\Roaming\.exe" /st 00:00 /du 9999:59 /sc once /ri 30 /rl HIGHEST /f
                                      11⤵
                                        PID:940
                                        • C:\Windows\SysWOW64\schtasks.exe
                                          schtasks /create /tn \ /tr "C:\Users\Admin\AppData\Roaming\.exe" /st 00:00 /du 9999:59 /sc once /ri 30 /rl HIGHEST /f
                                          12⤵
                                          • Creates scheduled task(s)
                                          PID:888
                                      • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
                                        #by-unknown
                                        11⤵
                                          PID:1052
                                        • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
                                          #by-unknown
                                          11⤵
                                            PID:1988
                                          • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
                                            #by-unknown
                                            11⤵
                                              PID:2100
                                            • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
                                              #by-unknown
                                              11⤵
                                                PID:2008
                                              • C:\Users\Admin\AppData\Local\Temp\2379cbf1b539be7380bed6b1c5e1d29c77acc795d291fa2a687819d48df930bb.exe
                                                #by-unknown
                                                11⤵
                                                  PID:2260

                            Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            • C:\Users\Admin\AppData\Local\Temp\8xg1836q38ww.bat

                              Filesize

                              261B

                              MD5

                              8dd851e7e9d371a6119d981de4821faa

                              SHA1

                              d4498c781947fad8c04194ad65b262dc1d78b055

                              SHA256

                              c087d27b5e1dc010e10f181a8ed49e24fb0100611c6cdf41a85b93b59ed6008a

                              SHA512

                              0e8aed23f58bbb3eefabe83a29b69e009b8df983069e59b35cd3beb7ca8850778e6315285c6271f66130754c9325f43f0151ce46241d2196ee108669b357850b

                            • C:\Users\Admin\AppData\Local\Temp\PjnjGGAm1qn7.bat

                              Filesize

                              261B

                              MD5

                              e82d9bbc8571842b399e0d2d0060122b

                              SHA1

                              dbfe9adee60ac443d894179aa68abc25579463d3

                              SHA256

                              bb60a7bff9ceee5002f2c25b45f961ded4021318edfff57ae9a75795f829a008

                              SHA512

                              b49c97c5da008ce4a3aeff032ed012c5041cb56840c0d8605075df4f93747ef88ecb56621be00a0a527f1258ba318f36077009eb087f42c21ded93eb51ee972d

                            • C:\Users\Admin\AppData\Local\Temp\dziUUBVLQgLl.bat

                              Filesize

                              261B

                              MD5

                              17f20b7609ae63be92ee2e431d996470

                              SHA1

                              f89e8e5b082bb39effc791db4cfe342e4817921f

                              SHA256

                              ce7f1b07c20b6d3d7c4863d6e412f8cd2b92eba3b1723504e6aa2b9416586fe2

                              SHA512

                              f82f6f857aadacfdeaffe966dcfc35b827f691d16d85b8e77cab8cf72fafa051206d86a2b023b55d85326075f6d04d97cad572feb50074ae92a5f2ddbe5bd59b

                            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

                              Filesize

                              7KB

                              MD5

                              9be3a3da9e98f9fbf0991ab681879737

                              SHA1

                              e4702769927bd84c735c6f094a1df64539ec88d2

                              SHA256

                              ab00149cf0cb2dcd30907a314013cca741579a26454cd756d8402a103654a91f

                              SHA512

                              68629db57df4da45f02c33f6974d669b76c9a0434cad46fc3428801ada32ef6a99418ad0aa34c747896940537de4cd77f59d873b49c4b3df6a4e14af384dec18

                            • \??\PIPE\srvsvc

                              MD5

                              d41d8cd98f00b204e9800998ecf8427e

                              SHA1

                              da39a3ee5e6b4b0d3255bfef95601890afd80709

                              SHA256

                              e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                              SHA512

                              cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                            • memory/304-61-0x0000000001190000-0x00000000014C2000-memory.dmp

                              Filesize

                              3.2MB

                            • memory/448-92-0x0000000000090000-0x00000000003C2000-memory.dmp

                              Filesize

                              3.2MB

                            • memory/1616-4-0x0000000070171000-0x0000000070172000-memory.dmp

                              Filesize

                              4KB

                            • memory/1616-7-0x0000000070170000-0x000000007071B000-memory.dmp

                              Filesize

                              5.7MB

                            • memory/1616-5-0x0000000070170000-0x000000007071B000-memory.dmp

                              Filesize

                              5.7MB

                            • memory/1616-6-0x0000000070170000-0x000000007071B000-memory.dmp

                              Filesize

                              5.7MB

                            • memory/1920-79-0x0000000000400000-0x0000000000724000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/1920-77-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                              Filesize

                              4KB

                            • memory/1920-81-0x0000000000400000-0x0000000000724000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/2192-1-0x0000000000980000-0x0000000000CB2000-memory.dmp

                              Filesize

                              3.2MB

                            • memory/2192-0-0x0000000073EAE000-0x0000000073EAF000-memory.dmp

                              Filesize

                              4KB

                            • memory/2276-48-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                              Filesize

                              4KB

                            • memory/2276-50-0x0000000000400000-0x0000000000724000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/2276-51-0x0000000000400000-0x0000000000724000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/2568-31-0x0000000000990000-0x0000000000CC2000-memory.dmp

                              Filesize

                              3.2MB

                            • memory/2780-15-0x0000000000400000-0x0000000000724000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/2780-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                              Filesize

                              4KB

                            • memory/2780-18-0x0000000000400000-0x0000000000724000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/2780-21-0x0000000000400000-0x0000000000724000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/2780-19-0x0000000000400000-0x0000000000724000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/2780-11-0x0000000000400000-0x0000000000724000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/2780-9-0x0000000000400000-0x0000000000724000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/2780-13-0x0000000000400000-0x0000000000724000-memory.dmp

                              Filesize

                              3.1MB