Analysis

  • max time kernel
    5s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/08/2024, 22:41

General

  • Target
    dea3e9019314af87c0148da2964bf0c0N.exe
  • Size 2.0MB
  • Sample240812-2md8jsvcmp
  • SHA256 42b931b3f31f74bc6f949cd225641bd536197ebaaa7ce65701bfeb2a4cb8ea64
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • azorult

C2
  • http://0x21.in:8000/_az/

Extracted

Family
  • quasar

Version
  • 1.3.0.0

Botnet
  • EbayProfiles

C2
  • 5.8.88.191:443

  • sockartek.icu:443

Mutex
  • QSR_MUTEX_0kBRNrRz5TDLEQouI0

Attributes
  • encryption_key

    MWhG6wsClMX8aJM2CVXT

  • install_name

    winsock.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    win defender run

  • subdirectory

    SubDir

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Quasar RAT 3 IoCs

    Quasar is an open source Remote Access Tool.

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

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

  • Executes dropped EXE 3 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 2 IoCs

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

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

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

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

  • Program crash 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dea3e9019314af87c0148da2964bf0c0N.exe
    "C:\Users\Admin\AppData\Local\Temp\dea3e9019314af87c0148da2964bf0c0N.exe"
    1⤵
    • Quasar RAT
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2740
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4644
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1288
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4644 -s 548
          3⤵
          • Program crash
          PID:4036
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3076
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "win defender run" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\windef.exe" /rl HIGHEST /f
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1228
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2128
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks" /create /tn "win defender run" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe" /rl HIGHEST /f
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:1076
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ETOhbjB6Y51p.bat" "
            4⤵
              PID:2732
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:3868
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:1404
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:4324
                    • C:\Windows\SysWOW64\schtasks.exe
                      "schtasks" /create /tn "win defender run" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe" /rl HIGHEST /f
                      6⤵
                      • Scheduled Task/Job: Scheduled Task
                      PID:748
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\k5XfDUJlbVIA.bat" "
                      6⤵
                        PID:3464
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:2128
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:4320
                          • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                            "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                            7⤵
                              PID:2644
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 2232
                            6⤵
                            • Program crash
                            PID:2076
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 2128 -s 2284
                        4⤵
                        • Program crash
                        PID:4560
                  • C:\Users\Admin\AppData\Local\Temp\dea3e9019314af87c0148da2964bf0c0N.exe
                    "C:\Users\Admin\AppData\Local\Temp\dea3e9019314af87c0148da2964bf0c0N.exe"
                    2⤵
                    • System Location Discovery: System Language Discovery
                    PID:1776
                  • C:\Windows\SysWOW64\schtasks.exe
                    "C:\Windows\SysWOW64\schtasks.exe" /create /tn RtkAudioService64 /tr "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe" /sc minute /mo 1 /F
                    2⤵
                    • System Location Discovery: System Language Discovery
                    • Scheduled Task/Job: Scheduled Task
                    PID:5052
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 4644 -ip 4644
                  1⤵
                    PID:1060
                  • 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=1016,i,3861745594156495651,17595114179815238301,262144 --variations-seed-version --mojo-platform-channel-handle=4392 /prefetch:8
                    1⤵
                      PID:4732
                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      1⤵
                        PID:1720
                        • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                          "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                          2⤵
                            PID:2484
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k
                              3⤵
                                PID:3488
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -u -p 2484 -s 520
                                3⤵
                                • Program crash
                                PID:1344
                            • C:\Users\Admin\AppData\Local\Temp\windef.exe
                              "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                              2⤵
                                PID:3296
                              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                                2⤵
                                  PID:2344
                                • C:\Windows\SysWOW64\schtasks.exe
                                  "C:\Windows\SysWOW64\schtasks.exe" /create /tn RtkAudioService64 /tr "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe" /sc minute /mo 1 /F
                                  2⤵
                                  • Scheduled Task/Job: Scheduled Task
                                  PID:4532
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2484 -ip 2484
                                1⤵
                                  PID:4320
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2128 -ip 2128
                                  1⤵
                                    PID:4048
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4324 -ip 4324
                                    1⤵
                                      PID:1724

                                    Network

                                          MITRE ATT&CK Enterprise v15

                                          Replay Monitor

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                                          Downloads

                                          windef.exe.log

                                          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\windef.exe.log
                                          • Size 1KB
                                          • SHA256 f49dbd55029bfbc15134f7c6a4f967d6c39142c63f2e8f1f8c78fab108a2c928
                                          • MD5 SHA1 SHA512

                                          ETOhbjB6Y51p.bat

                                          • Path C:\Users\Admin\AppData\Local\Temp\ETOhbjB6Y51p.bat
                                          • Size 208B
                                          • SHA256 7c2738c6555b84770e636be23795c1d6402191dd02e01c6878d0dcad42ba2745
                                          • MD5 SHA1 SHA512

                                          k5XfDUJlbVIA.bat

                                          • Path C:\Users\Admin\AppData\Local\Temp\k5XfDUJlbVIA.bat
                                          • Size 208B
                                          • SHA256 cbabecfc9a8a8fb0a463da32982f81f4b19974313622d3d59222f9b16dd594e8
                                          • MD5 SHA1 SHA512

                                          vnc.exe

                                          • Path C:\Users\Admin\AppData\Local\Temp\vnc.exe
                                          • Size 405KB
                                          • SHA256 4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4
                                          • MD5 SHA1 SHA512 SSDEEP

                                          windef.exe

                                          • Path C:\Users\Admin\AppData\Local\Temp\windef.exe
                                          • Size 349KB
                                          • SHA256 7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9
                                          • MD5 SHA1 SHA512 SSDEEP

                                          08-12-2024

                                          • Path C:\Users\Admin\AppData\Roaming\Logs\08-12-2024
                                          • Size 224B
                                          • SHA256 68b4609e582d6059522beb225ed3b55d6f054f64664ac6069e1bd5bbe76ae9c0
                                          • MD5 SHA1 SHA512

                                          SystemPropertiesPerformance.exe

                                          • Path C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                          • Size 2.0MB
                                          • SHA256 c5fbbc88407122b9c212315a44f9d5ccf7b698205b3b605bddf5b386dd70bc43
                                          • MD5 SHA1 SHA512 SSDEEP

                                          memory/1776-27-0x0000000000410000-0x0000000000430000-memory.dmp

                                          memory/1776-19-0x0000000000410000-0x0000000000430000-memory.dmp

                                          memory/2128-45-0x0000000006C10000-0x0000000006C1A000-memory.dmp

                                          memory/2344-73-0x0000000000400000-0x0000000000420000-memory.dmp

                                          memory/2344-67-0x0000000000400000-0x0000000000420000-memory.dmp

                                          memory/2740-28-0x0000000001E90000-0x0000000001E91000-memory.dmp

                                          memory/2740-74-0x0000000001E90000-0x0000000001E91000-memory.dmp

                                          memory/3076-29-0x000000007312E000-0x000000007312F000-memory.dmp

                                          memory/3076-37-0x00000000065C0000-0x00000000065FC000-memory.dmp

                                          memory/3076-36-0x0000000006080000-0x0000000006092000-memory.dmp

                                          memory/3076-35-0x0000000005350000-0x00000000053B6000-memory.dmp

                                          memory/3076-34-0x00000000053E0000-0x0000000005472000-memory.dmp

                                          memory/3076-33-0x0000000005990000-0x0000000005F34000-memory.dmp

                                          memory/3076-30-0x0000000000900000-0x000000000095E000-memory.dmp