Analysis

  • max time kernel
    5s
  • max time network
    115s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-09-2024 00:39

General

  • Target

    a620d27e5f9aacdbfa117a9e1205dbfcab495fcc8bbb0f2b041d599a94e1e988.exe

  • Size

    2.0MB

  • MD5

    91f1cec3e4236ffebd5b61a03c6615de

  • SHA1

    b085427b5916eeabb31470cce2d73179c7a8a415

  • SHA256

    a620d27e5f9aacdbfa117a9e1205dbfcab495fcc8bbb0f2b041d599a94e1e988

  • SHA512

    26212ff9e3555ddeca0435f4e729a838ef1b65221f5d9f8a9498f1bc8f3e6a42407c8d01f3e7ebd9b43952c3352e72564224b449c0a9540d9ca36a30c8c4193f

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYX:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YF

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

    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 1 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\a620d27e5f9aacdbfa117a9e1205dbfcab495fcc8bbb0f2b041d599a94e1e988.exe
    "C:\Users\Admin\AppData\Local\Temp\a620d27e5f9aacdbfa117a9e1205dbfcab495fcc8bbb0f2b041d599a94e1e988.exe"
    1⤵
    • 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:4284
    • 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:4860
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1532
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 544
          3⤵
          • Program crash
          PID:4472
      • 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:3340
        • 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:1400
        • 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:4280
          • 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:3944
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\JuxB5XRWxZqb.bat" "
            4⤵
              PID:4340
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:1204
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:4032
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:2768
                    • 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:2216
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\IM4DE4etCc1O.bat" "
                      6⤵
                        PID:2112
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:732
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:2580
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 2768 -s 2256
                          6⤵
                          • Program crash
                          PID:1832
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 4280 -s 2028
                      4⤵
                      • Program crash
                      PID:784
                • C:\Users\Admin\AppData\Local\Temp\a620d27e5f9aacdbfa117a9e1205dbfcab495fcc8bbb0f2b041d599a94e1e988.exe
                  "C:\Users\Admin\AppData\Local\Temp\a620d27e5f9aacdbfa117a9e1205dbfcab495fcc8bbb0f2b041d599a94e1e988.exe"
                  2⤵
                  • System Location Discovery: System Language Discovery
                  PID:336
                • 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:2168
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4860 -ip 4860
                1⤵
                  PID:1312
                • 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=4240,i,13995403245988825027,7033610968827661507,262144 --variations-seed-version --mojo-platform-channel-handle=4212 /prefetch:8
                  1⤵
                    PID:4548
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 4280 -ip 4280
                    1⤵
                      PID:2528
                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      1⤵
                        PID:3808
                        • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                          "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                          2⤵
                            PID:1896
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k
                              3⤵
                                PID:5012
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -u -p 1896 -s 520
                                3⤵
                                • Program crash
                                PID:956
                            • C:\Users\Admin\AppData\Local\Temp\windef.exe
                              "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                              2⤵
                                PID:2788
                              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                                2⤵
                                  PID:1136
                                • 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:1372
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1896 -ip 1896
                                1⤵
                                  PID:2880
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 2768 -ip 2768
                                  1⤵
                                    PID:2700

                                  Network

                                  MITRE ATT&CK Enterprise v15

                                  Replay Monitor

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                                  Downloads

                                  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\windef.exe.log

                                    Filesize

                                    1KB

                                    MD5

                                    10eab9c2684febb5327b6976f2047587

                                    SHA1

                                    a12ed54146a7f5c4c580416aecb899549712449e

                                    SHA256

                                    f49dbd55029bfbc15134f7c6a4f967d6c39142c63f2e8f1f8c78fab108a2c928

                                    SHA512

                                    7e5fd90fffae723bd0c662a90e0730b507805f072771ee673d1d8c262dbf60c8a03ba5fe088f699a97c2e886380de158b2ccd59ee62e3d012dd6dd14ea9d0e50

                                  • C:\Users\Admin\AppData\Local\Temp\IM4DE4etCc1O.bat

                                    Filesize

                                    208B

                                    MD5

                                    21453df6a87a2dad03b139dbb7ebdee1

                                    SHA1

                                    ffe1dc374b206a17671c08133b9b023a7bc69963

                                    SHA256

                                    8473e604ce9d680e435a1b1bd67dfac8d543541450537ed1282e4c18363a45e7

                                    SHA512

                                    dce8727295c4bc1fd2f0a36a6ff09e9aaa94482a6226a71feccf17fb3cc7b475f4b5b1618b6f8367cc2d2fcb1491e58767d678a4bf97651bc302415b6cf1ba9f

                                  • C:\Users\Admin\AppData\Local\Temp\JuxB5XRWxZqb.bat

                                    Filesize

                                    208B

                                    MD5

                                    31a943024e2ccdc9c2adb70d9e7016ec

                                    SHA1

                                    1e94f9405eb3bf8b0a15d7cc6a967398a4c8a8a5

                                    SHA256

                                    d2648f42825d098595772a22e58ea50346c5f207036edb818a7dff33dea81331

                                    SHA512

                                    91f36373237858893b09eec4ee3c30f3a3ad5f4dc94e5f09b50ef6a2ead7b2fe25da3173ecb1762786047b584867ad0a3ed6de9bcfa6d5e012773b56919c9960

                                  • C:\Users\Admin\AppData\Local\Temp\vnc.exe

                                    Filesize

                                    405KB

                                    MD5

                                    b8ba87ee4c3fc085a2fed0d839aadce1

                                    SHA1

                                    b3a2e3256406330e8b1779199bb2b9865122d766

                                    SHA256

                                    4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                                    SHA512

                                    7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

                                  • C:\Users\Admin\AppData\Local\Temp\windef.exe

                                    Filesize

                                    349KB

                                    MD5

                                    b4a202e03d4135484d0e730173abcc72

                                    SHA1

                                    01b30014545ea526c15a60931d676f9392ea0c70

                                    SHA256

                                    7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                                    SHA512

                                    632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                                  • C:\Users\Admin\AppData\Roaming\Logs\09-26-2024

                                    Filesize

                                    224B

                                    MD5

                                    1e4b8f890e666e4bff4e5f1274edc664

                                    SHA1

                                    a978e3490829bc3a7b6f4c7bfa864cfee2149be2

                                    SHA256

                                    3748396eff3710f290f3ae9381c85d581a5e57390776c26262ea6760d64657b0

                                    SHA512

                                    77b8c2e17b5248b2019dc8f0c5f9631d9fbd1d98ed86eff0d768ba47beb57efe0ff2d436b8c9c5ce4c1012f23346063b62701b438e1867e54f38f51797f9e1b0

                                  • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe

                                    Filesize

                                    2.0MB

                                    MD5

                                    70a9b9c481df545fbb03be0fc48bf083

                                    SHA1

                                    cabc0cf62cdafce6a91f433f41eecd40fc66dc64

                                    SHA256

                                    667c46902e7de741a19651e9bd882514ea288c5bcc9aabafff7feb99d0b24b2b

                                    SHA512

                                    1df528f4579fb77a83809f4bdb9a117055b2fb4e46e2db16c47f843c4492f182da15e74a1c967b932a0c35f3e2aee856da828e99f66e5499ccf95c1e74c081ee

                                  • memory/336-28-0x0000000000400000-0x0000000000420000-memory.dmp

                                    Filesize

                                    128KB

                                  • memory/336-20-0x0000000000400000-0x0000000000420000-memory.dmp

                                    Filesize

                                    128KB

                                  • memory/3340-34-0x0000000004EB0000-0x0000000004F42000-memory.dmp

                                    Filesize

                                    584KB

                                  • memory/3340-36-0x0000000005B60000-0x0000000005B72000-memory.dmp

                                    Filesize

                                    72KB

                                  • memory/3340-37-0x00000000060A0000-0x00000000060DC000-memory.dmp

                                    Filesize

                                    240KB

                                  • memory/3340-35-0x0000000004F50000-0x0000000004FB6000-memory.dmp

                                    Filesize

                                    408KB

                                  • memory/3340-33-0x0000000005370000-0x0000000005914000-memory.dmp

                                    Filesize

                                    5.6MB

                                  • memory/3340-30-0x0000000000520000-0x000000000057E000-memory.dmp

                                    Filesize

                                    376KB

                                  • memory/3340-29-0x000000007297E000-0x000000007297F000-memory.dmp

                                    Filesize

                                    4KB

                                  • memory/4280-45-0x0000000006D50000-0x0000000006D5A000-memory.dmp

                                    Filesize

                                    40KB

                                  • memory/4284-19-0x00000000040A0000-0x00000000040A1000-memory.dmp

                                    Filesize

                                    4KB