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Analysis

  • max time kernel
    5s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 18:28

General

  • Target

    0881f92d55c68fa3a6001b44493e546123fa9a2fb7c1e8683a375ff344bc7fca.exe

  • Size

    2.0MB

  • MD5

    40fe3f6effff7596e593c7ecd56502a3

  • SHA1

    4b384c82d3cca32ea9e9bae8dc7af1e4334fed51

  • SHA256

    0881f92d55c68fa3a6001b44493e546123fa9a2fb7c1e8683a375ff344bc7fca

  • SHA512

    1b3426aef8e0eaff11b2fed8cec1db85bacec1027bc5c0e32aea329fc7f809747c5a961ada6b9bd7f93c509dde91b3051efeac8af5d8e216e04bb80fa5246109

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYJ:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y/

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
  • Detects Windows executables referencing non-Windows User-Agents 3 IoCs
  • Detects executables containing common artifacts observed in infostealers 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 3 IoCs
  • Creates scheduled task(s) 1 TTPs 6 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • 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\0881f92d55c68fa3a6001b44493e546123fa9a2fb7c1e8683a375ff344bc7fca.exe
    "C:\Users\Admin\AppData\Local\Temp\0881f92d55c68fa3a6001b44493e546123fa9a2fb7c1e8683a375ff344bc7fca.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1492
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1204
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1924
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1204 -s 548
          3⤵
          • Program crash
          PID:1480
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3504
        • 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⤵
          • Creates scheduled task(s)
          PID:4752
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:464
          • 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⤵
            • Creates scheduled task(s)
            PID:5072
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FMuBq8rjts1i.bat" "
            4⤵
              PID:1212
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:4928
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • Runs ping.exe
                  PID:2280
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:2364
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 2260
                  4⤵
                  • Program crash
                  PID:3724
            • C:\Users\Admin\AppData\Local\Temp\0881f92d55c68fa3a6001b44493e546123fa9a2fb7c1e8683a375ff344bc7fca.exe
              "C:\Users\Admin\AppData\Local\Temp\0881f92d55c68fa3a6001b44493e546123fa9a2fb7c1e8683a375ff344bc7fca.exe"
              2⤵
                PID:1044
              • 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⤵
                • Creates scheduled task(s)
                PID:1008
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1204 -ip 1204
              1⤵
                PID:2396
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 464 -ip 464
                1⤵
                  PID:1216
                • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  1⤵
                    PID:2956
                    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                      2⤵
                        PID:1528
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k
                          3⤵
                            PID:3604
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 528
                            3⤵
                            • Program crash
                            PID:4640
                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                          2⤵
                            PID:868
                            • 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⤵
                              • Creates scheduled task(s)
                              PID:1108
                            • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                              "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                              3⤵
                                PID:2672
                                • 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⤵
                                  • Creates scheduled task(s)
                                  PID:3004
                            • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                              "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                              2⤵
                                PID:1480
                              • 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⤵
                                • Creates scheduled task(s)
                                PID:4964
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1528 -ip 1528
                              1⤵
                                PID:2396
                              • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                1⤵
                                  PID:1748
                                • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                  "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                  1⤵
                                    PID:4496

                                  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\FMuBq8rjts1i.bat

                                    Filesize

                                    208B

                                    MD5

                                    9aa08a70e00ef6a963aa1dd4e896534f

                                    SHA1

                                    844c24f7b0d228305e636cd8b032103c25956816

                                    SHA256

                                    eafe0f6cd2b94ea0eba4737b502b03937ace5770169874babc16e052b5fe29ff

                                    SHA512

                                    41ab412fad3e5d84ed69c28599aec08593c8f2e056f5e54666756baf730c57c40085b0fec9d4bc5cec500eec1eba1a78b804537af0bdd4341f045395ca973afb

                                  • 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\06-02-2024

                                    Filesize

                                    224B

                                    MD5

                                    2618416e95995a8d48a18190601e74cf

                                    SHA1

                                    595089555f925813e87d21a68b8c455c3ac02c8b

                                    SHA256

                                    3ede1dd7708aaa6aa386423ab25ceab45b1b4d05020dec27e444021225577960

                                    SHA512

                                    ba1929748c6f427365981cf91da6361fafa5ceb3d7ad65222527a8a7f4c0c13ae5a1062c01164cb194ca445cd14195a918ed26806558436b0aa13cd96c9c531f

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

                                    Filesize

                                    2.0MB

                                    MD5

                                    b4e0a38cd66ba5365efab5e20e0d6999

                                    SHA1

                                    cf93ec38f8b222e1890dd39b424f5babb7f8eb21

                                    SHA256

                                    fc909a48d7513e880a534b50a4d0bfc8e08df43669d89508aca6a3e567841aa9

                                    SHA512

                                    ae09ae5f894dc49b8c969d4e802245e12a83543ae534752e38c6fc3b94b6eed21ccececc478f7d4c9e402b2a5d280e113116bc6a09d0471d7f48d81a3991f403

                                  • memory/464-45-0x0000000006D10000-0x0000000006D1A000-memory.dmp

                                    Filesize

                                    40KB

                                  • memory/1044-28-0x0000000000400000-0x0000000000420000-memory.dmp

                                    Filesize

                                    128KB

                                  • memory/1044-20-0x0000000000400000-0x0000000000420000-memory.dmp

                                    Filesize

                                    128KB

                                  • memory/1492-19-0x0000000004260000-0x0000000004261000-memory.dmp

                                    Filesize

                                    4KB

                                  • memory/3504-34-0x0000000005330000-0x00000000053C2000-memory.dmp

                                    Filesize

                                    584KB

                                  • memory/3504-35-0x00000000053D0000-0x0000000005436000-memory.dmp

                                    Filesize

                                    408KB

                                  • memory/3504-36-0x0000000005FD0000-0x0000000005FE2000-memory.dmp

                                    Filesize

                                    72KB

                                  • memory/3504-37-0x0000000006510000-0x000000000654C000-memory.dmp

                                    Filesize

                                    240KB

                                  • memory/3504-33-0x00000000058E0000-0x0000000005E84000-memory.dmp

                                    Filesize

                                    5.6MB

                                  • memory/3504-30-0x00000000009A0000-0x00000000009FE000-memory.dmp

                                    Filesize

                                    376KB

                                  • memory/3504-29-0x0000000072CFE000-0x0000000072CFF000-memory.dmp

                                    Filesize

                                    4KB