Analysis

  • max time kernel
    75s
  • max time network
    75s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-01-2025 03:06

General

  • Target

    Solara V3/SolaraV3.exe

  • Size

    3.1MB

  • MD5

    3db0c6fb25d98ede3749c5c296227708

  • SHA1

    5d7843d185e9d7f56490bd03094f49c1444fa92a

  • SHA256

    604e26e36c395712913a141ef96bc461385eea54d2182d170196dfee458ea82f

  • SHA512

    461df5b25d7d14d340729177a987f254425d0bf57ca6f00853278d7640c40b6e52966a6465c0add70193fce2fc7a66555f1338e6a3f9eb28e85f3f5bab64b452

  • SSDEEP

    49152:xvrI22SsaNYfdPBldt698dBcjHE82wvBx5ZoGdD3THHB72eh2NT:xvU22SsaNYfdPBldt6+dBcjHiwr

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

robot

C2

tcp://quasarrat12345-50279.portmap.host:50279

Mutex

5b3b6ef6-1f5c-4cf2-a902-f38fc18c6f74

Attributes
  • encryption_key

    044C06AD5B6394C7D3CCD0919FA2C67D30EA87D4

  • install_name

    SolaraV3.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Update

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Checks computer location settings 2 TTPs 8 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 8 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 8 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 9 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Solara V3\SolaraV3.exe
    "C:\Users\Admin\AppData\Local\Temp\Solara V3\SolaraV3.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4952
    • C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2244
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2600
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AlfFspXr6oUJ.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3564
        • C:\Windows\system32\chcp.com
          chcp 65001
          4⤵
            PID:3696
          • C:\Windows\system32\PING.EXE
            ping -n 10 localhost
            4⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:216
          • C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe
            "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe"
            4⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1676
            • C:\Windows\SYSTEM32\schtasks.exe
              "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe" /rl HIGHEST /f
              5⤵
              • Scheduled Task/Job: Scheduled Task
              PID:3248
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\s58clwEcgqiO.bat" "
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:1336
              • C:\Windows\system32\chcp.com
                chcp 65001
                6⤵
                  PID:4116
                • C:\Windows\system32\PING.EXE
                  ping -n 10 localhost
                  6⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:2912
                • C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe"
                  6⤵
                  • Checks computer location settings
                  • Executes dropped EXE
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:2228
                  • C:\Windows\SYSTEM32\schtasks.exe
                    "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe" /rl HIGHEST /f
                    7⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:776
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AY8jF2NUkJ1O.bat" "
                    7⤵
                    • Suspicious use of WriteProcessMemory
                    PID:4648
                    • C:\Windows\system32\chcp.com
                      chcp 65001
                      8⤵
                        PID:3504
                      • C:\Windows\system32\PING.EXE
                        ping -n 10 localhost
                        8⤵
                        • System Network Configuration Discovery: Internet Connection Discovery
                        • Runs ping.exe
                        PID:3408
                      • C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe
                        "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe"
                        8⤵
                        • Checks computer location settings
                        • Executes dropped EXE
                        • Suspicious use of AdjustPrivilegeToken
                        • Suspicious use of WriteProcessMemory
                        PID:4952
                        • C:\Windows\SYSTEM32\schtasks.exe
                          "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe" /rl HIGHEST /f
                          9⤵
                          • Scheduled Task/Job: Scheduled Task
                          PID:2808
                        • C:\Windows\system32\cmd.exe
                          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\oObI3hiV5f1A.bat" "
                          9⤵
                          • Suspicious use of WriteProcessMemory
                          PID:2600
                          • C:\Windows\system32\chcp.com
                            chcp 65001
                            10⤵
                              PID:2692
                            • C:\Windows\system32\PING.EXE
                              ping -n 10 localhost
                              10⤵
                              • System Network Configuration Discovery: Internet Connection Discovery
                              • Runs ping.exe
                              PID:4876
                            • C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe
                              "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe"
                              10⤵
                              • Checks computer location settings
                              • Executes dropped EXE
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of WriteProcessMemory
                              PID:2900
                              • C:\Windows\SYSTEM32\schtasks.exe
                                "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe" /rl HIGHEST /f
                                11⤵
                                • Scheduled Task/Job: Scheduled Task
                                PID:4108
                              • C:\Windows\system32\cmd.exe
                                C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\75VDv8yIuuPc.bat" "
                                11⤵
                                • Suspicious use of WriteProcessMemory
                                PID:2688
                                • C:\Windows\system32\chcp.com
                                  chcp 65001
                                  12⤵
                                    PID:4868
                                  • C:\Windows\system32\PING.EXE
                                    ping -n 10 localhost
                                    12⤵
                                    • System Network Configuration Discovery: Internet Connection Discovery
                                    • Runs ping.exe
                                    PID:1488
                                  • C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe
                                    "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe"
                                    12⤵
                                    • Checks computer location settings
                                    • Executes dropped EXE
                                    • Suspicious use of AdjustPrivilegeToken
                                    • Suspicious use of WriteProcessMemory
                                    PID:4704
                                    • C:\Windows\SYSTEM32\schtasks.exe
                                      "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe" /rl HIGHEST /f
                                      13⤵
                                      • Scheduled Task/Job: Scheduled Task
                                      PID:4424
                                    • C:\Windows\system32\cmd.exe
                                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\4N0gC8McEqVU.bat" "
                                      13⤵
                                      • Suspicious use of WriteProcessMemory
                                      PID:4800
                                      • C:\Windows\system32\chcp.com
                                        chcp 65001
                                        14⤵
                                          PID:3028
                                        • C:\Windows\system32\PING.EXE
                                          ping -n 10 localhost
                                          14⤵
                                          • System Network Configuration Discovery: Internet Connection Discovery
                                          • Runs ping.exe
                                          PID:4544
                                        • C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe
                                          "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe"
                                          14⤵
                                          • Checks computer location settings
                                          • Executes dropped EXE
                                          • Suspicious use of AdjustPrivilegeToken
                                          PID:1316
                                          • C:\Windows\SYSTEM32\schtasks.exe
                                            "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe" /rl HIGHEST /f
                                            15⤵
                                            • Scheduled Task/Job: Scheduled Task
                                            PID:4936
                                          • C:\Windows\system32\cmd.exe
                                            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\vzrGQNyJYk5w.bat" "
                                            15⤵
                                              PID:708
                                              • C:\Windows\system32\chcp.com
                                                chcp 65001
                                                16⤵
                                                  PID:756
                                                • C:\Windows\system32\PING.EXE
                                                  ping -n 10 localhost
                                                  16⤵
                                                  • System Network Configuration Discovery: Internet Connection Discovery
                                                  • Runs ping.exe
                                                  PID:1672
                                                • C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe
                                                  "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe"
                                                  16⤵
                                                  • Checks computer location settings
                                                  • Executes dropped EXE
                                                  • Suspicious use of AdjustPrivilegeToken
                                                  PID:924
                                                  • C:\Windows\SYSTEM32\schtasks.exe
                                                    "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe" /rl HIGHEST /f
                                                    17⤵
                                                    • Scheduled Task/Job: Scheduled Task
                                                    PID:3732
                                                  • C:\Windows\system32\cmd.exe
                                                    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\vAoch81vk9IX.bat" "
                                                    17⤵
                                                      PID:2884
                                                      • C:\Windows\system32\chcp.com
                                                        chcp 65001
                                                        18⤵
                                                          PID:3220
                                                        • C:\Windows\system32\PING.EXE
                                                          ping -n 10 localhost
                                                          18⤵
                                                          • System Network Configuration Discovery: Internet Connection Discovery
                                                          • Runs ping.exe
                                                          PID:2808

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\SolaraV3.exe.log

                        Filesize

                        1KB

                        MD5

                        baf55b95da4a601229647f25dad12878

                        SHA1

                        abc16954ebfd213733c4493fc1910164d825cac8

                        SHA256

                        ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

                        SHA512

                        24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

                      • C:\Users\Admin\AppData\Local\Temp\4N0gC8McEqVU.bat

                        Filesize

                        209B

                        MD5

                        28fc9cf6f36c590c304112831d2042fe

                        SHA1

                        3af58c00439a9ae7c5be170ce2a09c92ee913ed5

                        SHA256

                        da58064137a41e1b66b8ee6d853324f6a38067678c331b0985f5a460c9dfcbcd

                        SHA512

                        d39171a5e630e0374c9267bf92b930756c72e84e9e45897b5911dd87e1c9738d50bfbccdb1cf9c56c5ef83b0bffde0057d36ffcad37dddc6eeff40c9d3b04539

                      • C:\Users\Admin\AppData\Local\Temp\75VDv8yIuuPc.bat

                        Filesize

                        209B

                        MD5

                        0ce927033a5c88d7f4b2e8735fd0b923

                        SHA1

                        e3e9885a5ec17c6f5dc165cb3fb32f285cc547e7

                        SHA256

                        0f820c37172e4b1cc930ab3bfc7577275cf40c79448a820cc1cf5e63d3463433

                        SHA512

                        700fbb03c8b2fbdfe113a0cb80eac8f0137b81bf2b0ee432d0b3238d9de0ecb68491d97f339369f719cb68ba1e9a7fdfd0da6bafaee2c3fe3db28c341447f106

                      • C:\Users\Admin\AppData\Local\Temp\AY8jF2NUkJ1O.bat

                        Filesize

                        209B

                        MD5

                        c0fbb4e229cf2eb2a071b2bcfde9ca3a

                        SHA1

                        2aa665279bedbc4d45af6f1bcecddf719a8ebe52

                        SHA256

                        c75883486bb79f5f12d0e56d466b336f2f7fee6575d764dbaf2058587e429943

                        SHA512

                        94b752c7ebcc7837e203d1d28c5df152941e2a47d1efb6b1db6a11ceb2e1f1b664ce3f9e6d9939bd3cdf6be453cb06c9d7ad2891dc2c56beb4146bff13afccdc

                      • C:\Users\Admin\AppData\Local\Temp\AlfFspXr6oUJ.bat

                        Filesize

                        209B

                        MD5

                        b6b10247c29fa5cc3556a64283cd0cd1

                        SHA1

                        b6dca5bf2ba6b9bee20098456b1dce9c0bf1d675

                        SHA256

                        4d6ac4150d74957004aca46663bbfccfe99b6387067194032d2774ee26cb0694

                        SHA512

                        2b1fab50287c3d1fcd17ecdefe0fc98468cd13e6cec876b740057daf9ba238bd24efff748a2d7100c22212482259636367e9512f987d5f5751171ccf6c995445

                      • C:\Users\Admin\AppData\Local\Temp\oObI3hiV5f1A.bat

                        Filesize

                        209B

                        MD5

                        ea7d56b1381cc9e0bf52defc2bf56f56

                        SHA1

                        2f663b85e0b07cd9bafa0a9ac82b2119fa35b213

                        SHA256

                        23783688010dad1fa49d5535cde4d22ae4c6b46e9df14ab35f536387ab5202a7

                        SHA512

                        5484128f37138d83bf8c46b6adef41b8e8d2f1e3fab650db5c7955a6fe5efa6deb885988e912bf4579c1de4103705df219ff7250fcf8176e53d60a7886393ed1

                      • C:\Users\Admin\AppData\Local\Temp\s58clwEcgqiO.bat

                        Filesize

                        209B

                        MD5

                        8869069a5bb5f59e81a4a58c57f21128

                        SHA1

                        2d7ce2d895a35cd064ce714c9beec07ea54d61a9

                        SHA256

                        e84ef407dc2da83c7f26bdee260551d1c6d7ac39bb58c143f2f7405e12c4d285

                        SHA512

                        1a8c2a5f3a0d8aa0826ed1bd426c12d36297f21635a7a32dca2af24717f97b77e306a359a844b12a3f6bd93ba46a70fdd7b962de5eb9a55322b2cc3eaaf1f272

                      • C:\Users\Admin\AppData\Local\Temp\vAoch81vk9IX.bat

                        Filesize

                        209B

                        MD5

                        f50c108cabd5f71257d412d37bd5ab1b

                        SHA1

                        ab1d2e1b231b6fd4c9efa1ea1a946d5d8b416e14

                        SHA256

                        614aca1b9d1ecdd020a4227c9fde5c8245f89f4f6bb015429b4f3d1b2946d215

                        SHA512

                        92692bf4fb3c6cbfe0383437d216ebf13d8df1d5db711443708720100a627949623079c0e645bf226a7316e245945cbac790854eb09b9d0ee488e2f60cacb0f0

                      • C:\Users\Admin\AppData\Local\Temp\vzrGQNyJYk5w.bat

                        Filesize

                        209B

                        MD5

                        f920a72f7948e01637de03ae7562d6d7

                        SHA1

                        1c726975aea7709b2e8940262cff25be20a03546

                        SHA256

                        4c35f27d1b56a5a8948663137ddf73272cb4c287d97abcb7da06798e278f72df

                        SHA512

                        422af4840134930092296d5cededf6142840d4657ed8ef6f4a00b72dd7499db01f9f3bc7f0005ae9faad13fc2b1ce23375264863e6943df727ae8b122d7362a9

                      • C:\Users\Admin\AppData\Roaming\SubDir\SolaraV3.exe

                        Filesize

                        3.1MB

                        MD5

                        3db0c6fb25d98ede3749c5c296227708

                        SHA1

                        5d7843d185e9d7f56490bd03094f49c1444fa92a

                        SHA256

                        604e26e36c395712913a141ef96bc461385eea54d2182d170196dfee458ea82f

                        SHA512

                        461df5b25d7d14d340729177a987f254425d0bf57ca6f00853278d7640c40b6e52966a6465c0add70193fce2fc7a66555f1338e6a3f9eb28e85f3f5bab64b452

                      • memory/2244-12-0x00007FFCD4320000-0x00007FFCD4DE1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/2244-13-0x000000001BB10000-0x000000001BB60000-memory.dmp

                        Filesize

                        320KB

                      • memory/2244-14-0x000000001BC20000-0x000000001BCD2000-memory.dmp

                        Filesize

                        712KB

                      • memory/2244-18-0x00007FFCD4320000-0x00007FFCD4DE1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/2244-11-0x00007FFCD4320000-0x00007FFCD4DE1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/3908-0-0x00007FFCD4323000-0x00007FFCD4325000-memory.dmp

                        Filesize

                        8KB

                      • memory/3908-10-0x00007FFCD4320000-0x00007FFCD4DE1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/3908-2-0x00007FFCD4320000-0x00007FFCD4DE1000-memory.dmp

                        Filesize

                        10.8MB

                      • memory/3908-1-0x0000000000CE0000-0x0000000001008000-memory.dmp

                        Filesize

                        3.2MB