Analysis

  • max time kernel
    145s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/04/2024, 14:51

General

  • Target
    bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
  • Size 1.4MB
  • Sample240404-r79vvaae9w
  • SHA256 1bfb2dc7443c52100097ab60a0974f29c146503a941d6d1775efe9ff8f120c97
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.3.0.0

Botnet
  • BROD

C2
  • sommerishere.sytes.net:61537

  • ommerishere.sytes.net:61537

Mutex
  • QSR_MUTEX_HblVPifA3qZwz1UNVx

Attributes
  • encryption_key

    qEMtrXI36duggEwkopaa

  • install_name

    Updater.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Update

  • subdirectory

    Windows

Signatures

  • Quasar RAT 3 IoCs

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Looks up external IP address via web service 2 IoCs

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

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

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

  • Program crash 3 IoCs
  • Runs ping.exe 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4584
    • C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
      2⤵
        PID:3484
      • C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
        C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
        2⤵
        • Checks computer location settings
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4984
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WxRnvwcowdb4.bat" "
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:816
          • C:\Windows\SysWOW64\chcp.com
            chcp 65001
            4⤵
              PID:4728
            • C:\Windows\SysWOW64\PING.EXE
              ping -n 10 localhost
              4⤵
              • Quasar RAT
              • Runs ping.exe
              PID:4404
            • C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
              "C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe"
              4⤵
              • Adds Run key to start application
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:1056
              • C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
                C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
                5⤵
                  PID:4600
                • C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
                  C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
                  5⤵
                  • Checks computer location settings
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of SetWindowsHookEx
                  • Suspicious use of WriteProcessMemory
                  PID:4324
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\vFHo0MdJ3mI4.bat" "
                    6⤵
                    • Suspicious use of WriteProcessMemory
                    PID:4624
                    • C:\Windows\SysWOW64\chcp.com
                      chcp 65001
                      7⤵
                        PID:3884
                      • C:\Windows\SysWOW64\PING.EXE
                        ping -n 10 localhost
                        7⤵
                        • Runs ping.exe
                        PID:5068
                      • C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
                        "C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe"
                        7⤵
                        • Adds Run key to start application
                        • Suspicious use of SetThreadContext
                        • Suspicious behavior: EnumeratesProcesses
                        • Suspicious use of AdjustPrivilegeToken
                        • Suspicious use of WriteProcessMemory
                        PID:1476
                        • C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
                          C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
                          8⤵
                            PID:3944
                          • C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
                            C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
                            8⤵
                              PID:592
                            • C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
                              C:\Users\Admin\AppData\Local\Temp\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe
                              8⤵
                              • Checks computer location settings
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of SetWindowsHookEx
                              • Suspicious use of WriteProcessMemory
                              PID:4928
                              • C:\Windows\SysWOW64\cmd.exe
                                C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\XdmR5rYL0NpH.bat" "
                                9⤵
                                • Suspicious use of WriteProcessMemory
                                PID:3052
                                • C:\Windows\SysWOW64\chcp.com
                                  chcp 65001
                                  10⤵
                                    PID:4260
                                  • C:\Windows\SysWOW64\PING.EXE
                                    ping -n 10 localhost
                                    10⤵
                                    • Runs ping.exe
                                    PID:1908
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -u -p 4928 -s 1968
                                  9⤵
                                  • Program crash
                                  PID:2888
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 2232
                            6⤵
                            • Program crash
                            PID:4748
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 2244
                      3⤵
                      • Program crash
                      PID:4372
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4984 -ip 4984
                  1⤵
                    PID:3380
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4324 -ip 4324
                    1⤵
                      PID:1892
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4928 -ip 4928
                      1⤵
                        PID:4844

                      Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

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                            Downloads

                            bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe.log

                            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\bb27b01d9b62ebf119188334800da221_JaffaCakes118.exe.log
                            • Size 701B
                            • SHA256 364123cc7acd0e2904f0fb507139b211f587364654fc66a61a2772ff156e6eae
                            • MD5 SHA1 SHA512

                            WxRnvwcowdb4.bat

                            • Path C:\Users\Admin\AppData\Local\Temp\WxRnvwcowdb4.bat
                            • Size 243B
                            • SHA256 cceb99f8dfd7f196a6e58819b5a9f531255260274e101c8690c7e6b74d9aa218
                            • MD5 SHA1 SHA512

                            XdmR5rYL0NpH.bat

                            • Path C:\Users\Admin\AppData\Local\Temp\XdmR5rYL0NpH.bat
                            • Size 243B
                            • SHA256 e2d921ef70b4bb112d12735fb4a18f338779b4a3b5b68437b1592b581c37c46e
                            • MD5 SHA1 SHA512

                            vFHo0MdJ3mI4.bat

                            • Path C:\Users\Admin\AppData\Local\Temp\vFHo0MdJ3mI4.bat
                            • Size 243B
                            • SHA256 b6b21a97e7d12fc1103f5538841ade4abcc0b897a21dcd9cf05e429b640a70ac
                            • MD5 SHA1 SHA512

                            04-04-2024

                            • Path C:\Users\Admin\AppData\Roaming\Logs\04-04-2024
                            • Size 224B
                            • SHA256 733f6ac4e1930ba072891b0144e2011e6fec8c483a91e5c3c6814415cb739f26
                            • MD5 SHA1 SHA512

                            memory/1056-31-0x00000000749C0000-0x0000000075170000-memory.dmp

                            memory/1056-27-0x0000000003060000-0x0000000003070000-memory.dmp

                            memory/1056-26-0x00000000749C0000-0x0000000075170000-memory.dmp

                            memory/1056-25-0x00000000749C0000-0x0000000075170000-memory.dmp

                            memory/1476-41-0x00000000749C0000-0x0000000075170000-memory.dmp

                            memory/1476-46-0x00000000749C0000-0x0000000075170000-memory.dmp

                            memory/1476-42-0x0000000004C00000-0x0000000004C10000-memory.dmp

                            memory/1476-40-0x00000000749C0000-0x0000000075170000-memory.dmp

                            memory/4324-32-0x00000000749C0000-0x0000000075170000-memory.dmp

                            memory/4324-39-0x00000000749C0000-0x0000000075170000-memory.dmp

                            memory/4584-7-0x0000000004FC0000-0x0000000004FD0000-memory.dmp

                            memory/4584-13-0x0000000074920000-0x00000000750D0000-memory.dmp

                            memory/4584-0-0x0000000000540000-0x00000000006A2000-memory.dmp

                            memory/4584-9-0x0000000005B10000-0x0000000005B4E000-memory.dmp

                            memory/4584-6-0x0000000005620000-0x0000000005686000-memory.dmp

                            memory/4584-5-0x0000000005B60000-0x0000000006104000-memory.dmp

                            memory/4584-4-0x0000000005510000-0x00000000055A2000-memory.dmp

                            memory/4584-3-0x0000000074920000-0x00000000750D0000-memory.dmp

                            memory/4584-2-0x0000000004FF0000-0x00000000050E8000-memory.dmp

                            memory/4584-1-0x0000000074920000-0x00000000750D0000-memory.dmp

                            memory/4928-47-0x00000000749C0000-0x0000000075170000-memory.dmp

                            memory/4928-48-0x0000000004DF0000-0x0000000004E00000-memory.dmp

                            memory/4928-55-0x00000000749C0000-0x0000000075170000-memory.dmp

                            memory/4984-10-0x0000000000400000-0x000000000045E000-memory.dmp

                            memory/4984-24-0x0000000074920000-0x00000000750D0000-memory.dmp

                            memory/4984-19-0x0000000006F80000-0x0000000006F8A000-memory.dmp

                            memory/4984-17-0x0000000006C00000-0x0000000006C3C000-memory.dmp

                            memory/4984-16-0x0000000006580000-0x0000000006592000-memory.dmp

                            memory/4984-15-0x0000000005990000-0x00000000059A0000-memory.dmp

                            memory/4984-14-0x0000000074920000-0x00000000750D0000-memory.dmp