Analysis

  • max time kernel
    142s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/08/2024, 04:36

General

  • Target
    Bootstrapper.exe
  • Size 3.3MB
  • Sample240818-e7874awbjg
  • SHA256 93fd2544b315e84b2fd26cca70b84cbdcff3e02cc01b83a7abac2f99d56b19d0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • napalm

C2
  • napalmwtf-42785.portmap.host:42785

  • Drownzy-54034.portmap.host:54034

Mutex
  • 90d42f9c-2535-47cc-9947-9a1a89c43fc4

Attributes
  • encryption_key

    19D2CF4A708769AB5B4B046C13865B4AB48B4C4D

  • install_name

    EAC.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    EasyAntiCheat EOS

  • subdirectory

    EasyAntiCheat

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Checks computer location settings 2 TTPs 9 IoCs

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

  • Executes dropped EXE 9 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 9 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 9 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 10 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of SetWindowsHookEx 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\Bootstrapper.exe
    "C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3884
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "EasyAntiCheat EOS" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:5000
    • C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe
      "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1992
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "EasyAntiCheat EOS" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1768
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ddfg0yr40AzX.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1180
        • C:\Windows\system32\chcp.com
          chcp 65001
          4⤵
            PID:4828
          • C:\Windows\system32\PING.EXE
            ping -n 10 localhost
            4⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:2352
          • C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe
            "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe"
            4⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:4168
            • C:\Windows\SYSTEM32\schtasks.exe
              "schtasks" /create /tn "EasyAntiCheat EOS" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe" /rl HIGHEST /f
              5⤵
              • Scheduled Task/Job: Scheduled Task
              PID:2088
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\bnhS6UXYyVq8.bat" "
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:5004
              • C:\Windows\system32\chcp.com
                chcp 65001
                6⤵
                  PID:4928
                • C:\Windows\system32\PING.EXE
                  ping -n 10 localhost
                  6⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:816
                • C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe
                  "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe"
                  6⤵
                  • Checks computer location settings
                  • Executes dropped EXE
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of SetWindowsHookEx
                  • Suspicious use of WriteProcessMemory
                  PID:1700
                  • C:\Windows\SYSTEM32\schtasks.exe
                    "schtasks" /create /tn "EasyAntiCheat EOS" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe" /rl HIGHEST /f
                    7⤵
                    • Scheduled Task/Job: Scheduled Task
                    PID:3160
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VlKm7fNOZIIl.bat" "
                    7⤵
                    • Suspicious use of WriteProcessMemory
                    PID:4004
                    • C:\Windows\system32\chcp.com
                      chcp 65001
                      8⤵
                        PID:2628
                      • C:\Windows\system32\PING.EXE
                        ping -n 10 localhost
                        8⤵
                        • System Network Configuration Discovery: Internet Connection Discovery
                        • Runs ping.exe
                        PID:1900
                      • C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe
                        "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe"
                        8⤵
                        • Checks computer location settings
                        • Executes dropped EXE
                        • Suspicious use of AdjustPrivilegeToken
                        • Suspicious use of SetWindowsHookEx
                        • Suspicious use of WriteProcessMemory
                        PID:1708
                        • C:\Windows\SYSTEM32\schtasks.exe
                          "schtasks" /create /tn "EasyAntiCheat EOS" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe" /rl HIGHEST /f
                          9⤵
                          • Scheduled Task/Job: Scheduled Task
                          PID:736
                        • C:\Windows\system32\cmd.exe
                          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\TQHbqSpADXsY.bat" "
                          9⤵
                          • Suspicious use of WriteProcessMemory
                          PID:4752
                          • C:\Windows\system32\chcp.com
                            chcp 65001
                            10⤵
                              PID:4792
                            • C:\Windows\system32\PING.EXE
                              ping -n 10 localhost
                              10⤵
                              • System Network Configuration Discovery: Internet Connection Discovery
                              • Runs ping.exe
                              PID:3868
                            • C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe
                              "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe"
                              10⤵
                              • Checks computer location settings
                              • Executes dropped EXE
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of SetWindowsHookEx
                              • Suspicious use of WriteProcessMemory
                              PID:5100
                              • C:\Windows\SYSTEM32\schtasks.exe
                                "schtasks" /create /tn "EasyAntiCheat EOS" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe" /rl HIGHEST /f
                                11⤵
                                • Scheduled Task/Job: Scheduled Task
                                PID:3884
                              • C:\Windows\system32\cmd.exe
                                C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\m8FRH14OsGCw.bat" "
                                11⤵
                                • Suspicious use of WriteProcessMemory
                                PID:1664
                                • C:\Windows\system32\chcp.com
                                  chcp 65001
                                  12⤵
                                    PID:2524
                                  • C:\Windows\system32\PING.EXE
                                    ping -n 10 localhost
                                    12⤵
                                    • System Network Configuration Discovery: Internet Connection Discovery
                                    • Runs ping.exe
                                    PID:1888
                                  • C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe
                                    "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe"
                                    12⤵
                                    • Checks computer location settings
                                    • Executes dropped EXE
                                    • Suspicious use of AdjustPrivilegeToken
                                    • Suspicious use of SetWindowsHookEx
                                    • Suspicious use of WriteProcessMemory
                                    PID:184
                                    • C:\Windows\SYSTEM32\schtasks.exe
                                      "schtasks" /create /tn "EasyAntiCheat EOS" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe" /rl HIGHEST /f
                                      13⤵
                                      • Scheduled Task/Job: Scheduled Task
                                      PID:2336
                                    • C:\Windows\system32\cmd.exe
                                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\m0ijituyVK5l.bat" "
                                      13⤵
                                      • Suspicious use of WriteProcessMemory
                                      PID:2960
                                      • C:\Windows\system32\chcp.com
                                        chcp 65001
                                        14⤵
                                          PID:208
                                        • C:\Windows\system32\PING.EXE
                                          ping -n 10 localhost
                                          14⤵
                                          • System Network Configuration Discovery: Internet Connection Discovery
                                          • Runs ping.exe
                                          PID:4272
                                        • C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe
                                          "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe"
                                          14⤵
                                          • Checks computer location settings
                                          • Executes dropped EXE
                                          • Suspicious use of AdjustPrivilegeToken
                                          • Suspicious use of SetWindowsHookEx
                                          PID:396
                                          • C:\Windows\SYSTEM32\schtasks.exe
                                            "schtasks" /create /tn "EasyAntiCheat EOS" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe" /rl HIGHEST /f
                                            15⤵
                                            • Scheduled Task/Job: Scheduled Task
                                            PID:4196
                                          • C:\Windows\system32\cmd.exe
                                            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\yYguihOY5GL4.bat" "
                                            15⤵
                                              PID:2020
                                              • C:\Windows\system32\chcp.com
                                                chcp 65001
                                                16⤵
                                                  PID:1892
                                                • C:\Windows\system32\PING.EXE
                                                  ping -n 10 localhost
                                                  16⤵
                                                  • System Network Configuration Discovery: Internet Connection Discovery
                                                  • Runs ping.exe
                                                  PID:4284
                                                • C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe
                                                  "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe"
                                                  16⤵
                                                  • Checks computer location settings
                                                  • Executes dropped EXE
                                                  • Suspicious use of AdjustPrivilegeToken
                                                  • Suspicious use of SetWindowsHookEx
                                                  PID:2932
                                                  • C:\Windows\SYSTEM32\schtasks.exe
                                                    "schtasks" /create /tn "EasyAntiCheat EOS" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe" /rl HIGHEST /f
                                                    17⤵
                                                    • Scheduled Task/Job: Scheduled Task
                                                    PID:4552
                                                  • C:\Windows\system32\cmd.exe
                                                    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\fXlH3NxVkPYI.bat" "
                                                    17⤵
                                                      PID:1180
                                                      • C:\Windows\system32\chcp.com
                                                        chcp 65001
                                                        18⤵
                                                          PID:1808
                                                        • C:\Windows\system32\PING.EXE
                                                          ping -n 10 localhost
                                                          18⤵
                                                          • System Network Configuration Discovery: Internet Connection Discovery
                                                          • Runs ping.exe
                                                          PID:3308
                                                        • C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe
                                                          "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe"
                                                          18⤵
                                                          • Checks computer location settings
                                                          • Executes dropped EXE
                                                          • Suspicious use of AdjustPrivilegeToken
                                                          • Suspicious use of SetWindowsHookEx
                                                          PID:4104
                                                          • C:\Windows\SYSTEM32\schtasks.exe
                                                            "schtasks" /create /tn "EasyAntiCheat EOS" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe" /rl HIGHEST /f
                                                            19⤵
                                                            • Scheduled Task/Job: Scheduled Task
                                                            PID:4844
                                                          • C:\Windows\system32\cmd.exe
                                                            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\lAv0C8THv7JP.bat" "
                                                            19⤵
                                                              PID:2084
                                                              • C:\Windows\system32\chcp.com
                                                                chcp 65001
                                                                20⤵
                                                                  PID:1904
                                                                • C:\Windows\system32\PING.EXE
                                                                  ping -n 10 localhost
                                                                  20⤵
                                                                  • System Network Configuration Discovery: Internet Connection Discovery
                                                                  • Runs ping.exe
                                                                  PID:4800
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4608,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=3264 /prefetch:8
                            1⤵
                              PID:3784

                            Network

                                  MITRE ATT&CK Enterprise v15

                                  Replay Monitor

                                  Loading Replay Monitor...

                                  Downloads

                                  EAC.exe.log

                                  • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\EAC.exe.log
                                  • Size 2KB
                                  • SHA256 da740d78ae00b72cb3710d1a1256dc6431550965d20afaa65e5d5860a4748e8c
                                  • MD5 SHA1 SHA512

                                  TQHbqSpADXsY.bat

                                  • Path C:\Users\Admin\AppData\Local\Temp\TQHbqSpADXsY.bat
                                  • Size 211B
                                  • SHA256 aa29b32d92fc077ab4434bb9eaade082d0c26d9d3c893b5696589f6737865423
                                  • MD5 SHA1 SHA512

                                  VlKm7fNOZIIl.bat

                                  • Path C:\Users\Admin\AppData\Local\Temp\VlKm7fNOZIIl.bat
                                  • Size 211B
                                  • SHA256 00709d317b73d98a3eede07c33c55f3795cddf191853417c55df79991c20c34f
                                  • MD5 SHA1 SHA512

                                  bnhS6UXYyVq8.bat

                                  • Path C:\Users\Admin\AppData\Local\Temp\bnhS6UXYyVq8.bat
                                  • Size 211B
                                  • SHA256 8f19a70d65894fba5661649048f4015badf8916d566de09aca5968a321694659
                                  • MD5 SHA1 SHA512

                                  ddfg0yr40AzX.bat

                                  • Path C:\Users\Admin\AppData\Local\Temp\ddfg0yr40AzX.bat
                                  • Size 211B
                                  • SHA256 3f22f503713323ea99cb1fab3551fa3240391c91ea772eeef1b798684e730fa2
                                  • MD5 SHA1 SHA512

                                  fXlH3NxVkPYI.bat

                                  • Path C:\Users\Admin\AppData\Local\Temp\fXlH3NxVkPYI.bat
                                  • Size 211B
                                  • SHA256 13b5b6691a8f6040aff084c51c4048a353d944fe30be75f277a6d31ff49bc269
                                  • MD5 SHA1 SHA512

                                  lAv0C8THv7JP.bat

                                  • Path C:\Users\Admin\AppData\Local\Temp\lAv0C8THv7JP.bat
                                  • Size 211B
                                  • SHA256 c001a6f76abc565c89b3303217e6ecff98cd2a7565198e0044078742538e10ca
                                  • MD5 SHA1 SHA512

                                  m0ijituyVK5l.bat

                                  • Path C:\Users\Admin\AppData\Local\Temp\m0ijituyVK5l.bat
                                  • Size 211B
                                  • SHA256 3dacf641df3803080b2d71a71655faaffd1e05438ec7eff494d8bd12240e9c6d
                                  • MD5 SHA1 SHA512

                                  m8FRH14OsGCw.bat

                                  • Path C:\Users\Admin\AppData\Local\Temp\m8FRH14OsGCw.bat
                                  • Size 211B
                                  • SHA256 85e1eb9312d3e8d67fa2869038d17941dba349f8ba504770713ab3bc4e2ab6d9
                                  • MD5 SHA1 SHA512

                                  yYguihOY5GL4.bat

                                  • Path C:\Users\Admin\AppData\Local\Temp\yYguihOY5GL4.bat
                                  • Size 211B
                                  • SHA256 70a342ec8bf57aeab0bc42f1c0a89fd78112c3196db1bc2c054a5f7c36431292
                                  • MD5 SHA1 SHA512

                                  EAC.exe

                                  • Path C:\Users\Admin\AppData\Roaming\EasyAntiCheat\EAC.exe
                                  • Size 3.3MB
                                  • SHA256 93fd2544b315e84b2fd26cca70b84cbdcff3e02cc01b83a7abac2f99d56b19d0
                                  • MD5 SHA1 SHA512 SSDEEP

                                  memory/1992-18-0x00007FFDE9420000-0x00007FFDE9EE1000-memory.dmp

                                  memory/1992-13-0x000000001BCF0000-0x000000001BDA2000-memory.dmp

                                  memory/1992-12-0x000000001BBE0000-0x000000001BC30000-memory.dmp

                                  memory/1992-11-0x00007FFDE9420000-0x00007FFDE9EE1000-memory.dmp

                                  memory/1992-10-0x00007FFDE9420000-0x00007FFDE9EE1000-memory.dmp

                                  memory/3884-9-0x00007FFDE9420000-0x00007FFDE9EE1000-memory.dmp

                                  memory/3884-0-0x00007FFDE9423000-0x00007FFDE9425000-memory.dmp

                                  memory/3884-2-0x00007FFDE9420000-0x00007FFDE9EE1000-memory.dmp

                                  memory/3884-1-0x00000000004D0000-0x0000000000830000-memory.dmp