Analysis

  • max time kernel
    4s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-12-2023 18:24

General

  • Target

    Adobe Download Manager.exe

  • Size

    2.0MB

  • MD5

    2e9ba9334449304220a549e7a75447f4

  • SHA1

    791d1648ee703e05b4749fcb99c8f45692e73787

  • SHA256

    f859bddda5d049e5449032b8a4373515a6a06cbc2019f9fc1c0c269ba4d90153

  • SHA512

    91f5e99e4e69ece69f1eb4a72b69bf77e42092ad2bb40d6f480768148a2490f3bf747b507b3a52446d60eb53373f7f3b64d16fe1993e58dd10ec0430cf91bcff

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKY1:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YL

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 5 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 5 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\Adobe Download Manager.exe
    "C:\Users\Admin\AppData\Local\Temp\Adobe Download Manager.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3100
    • 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:3924
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3924 -s 548
        3⤵
        • Program crash
        PID:2452
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1472
      • C:\Users\Admin\AppData\Local\Temp\Adobe Download Manager.exe
        "C:\Users\Admin\AppData\Local\Temp\Adobe Download Manager.exe"
        2⤵
          PID:2264
        • 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:4448
        • 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:3552
          • 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:3972
          • 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:836
            • 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:3536
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\hI8lJN5gZi9c.bat" "
              4⤵
                PID:4912
                • C:\Windows\SysWOW64\chcp.com
                  chcp 65001
                  5⤵
                    PID:3936
                  • C:\Windows\SysWOW64\PING.EXE
                    ping -n 10 localhost
                    5⤵
                    • Runs ping.exe
                    PID:2192
                  • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                    "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                    5⤵
                      PID:2212
                      • 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⤵
                        • Creates scheduled task(s)
                        PID:5024
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 836 -s 2232
                    4⤵
                    • Program crash
                    PID:796
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3924 -ip 3924
              1⤵
                PID:3228
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 836 -ip 836
                1⤵
                  PID:224
                • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  1⤵
                    PID:5028
                    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                      2⤵
                        PID:948
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k
                          3⤵
                            PID:4628
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 948 -s 520
                            3⤵
                            • Program crash
                            PID:2132
                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                          2⤵
                            PID:1148
                          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                            "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                            2⤵
                              PID:2080
                            • 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:1316
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 948 -ip 948
                            1⤵
                              PID:1392

                            Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

                            Loading Replay Monitor...

                            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\hI8lJN5gZi9c.bat

                              Filesize

                              208B

                              MD5

                              b6aa593a3359161270eb56e5657e4315

                              SHA1

                              a59d567dae33147508a387d524f8394c2c65f2ca

                              SHA256

                              6adc04a0891cbcb05f106f32b6dff8683aaa453e77d530cab65c59dd15ff0c79

                              SHA512

                              a62309a7a15daf7b407c718f10dc1657e9de2683621f46770f4dade8f9cc38d3e3f264da2de54a0f48259661cc01650559c9eb1d3bd2a47ad233ce828a7b2418

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

                              Filesize

                              222KB

                              MD5

                              423f7c5ae6986da923e73ee601b20b91

                              SHA1

                              ef317db62be906ac6a86b8dcbb22cae088c130dc

                              SHA256

                              be0cb4366fe2792a194ab3e76a791d02c724b7cc2267c68b56be1b1307e0a016

                              SHA512

                              0a72324c1dee3df6ff50b64c95ca7e8e31241c021576c995c20bf8f810b39d20b0dc2ce01c84a24bafdfba4ec3e1a01f73e2fefcf8d03fbbe331a32019e0c6fa

                            • 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

                              116KB

                              MD5

                              4bbb0fde08e4401fade8a58f9eb7865d

                              SHA1

                              3ace12e20ece35ab52f37f3463c127e0e5c33375

                              SHA256

                              6bb4a37cbaefccca0d3c207133dbf725b4207cba0eb788d3f4bcd573658b4659

                              SHA512

                              16b25e775040b73de15744125c808489b233d6752ed332a94fc9d2132168ef85692ebac4610fadae86edcbd0bd4beb6f5da8ea17a12ccf60e03e07eff66263c3

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

                              Filesize

                              349KB

                              MD5

                              b4a202e03d4135484d0e730173abcc72

                              SHA1

                              01b30014545ea526c15a60931d676f9392ea0c70

                              SHA256

                              7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                              SHA512

                              632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

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

                              Filesize

                              140KB

                              MD5

                              ada67babf6db79cbc5261ed1b2590cde

                              SHA1

                              33059c0382f74f144021623ef9fbaa7072550267

                              SHA256

                              6d387713af6008908c8c19abb526d46ab6ef59eca4678e8e481552cd3cf69466

                              SHA512

                              7ff5069676f1ddfc7843dab27b7f8b1e4dd2ec1d18dd5dd8a743551bd981a6db3abdcf0adab7641589fcc09cbe3ec50d831f760d4e9084c59ce9252ce57a4afb

                            • C:\Users\Admin\AppData\Roaming\Logs\12-21-2023

                              Filesize

                              224B

                              MD5

                              a3c3d9bd3d2ce99ba99dfbb5313e6483

                              SHA1

                              356b908cbbc9ebad153be8c1b79ddf2faf62a604

                              SHA256

                              1fb284ae7739900833b59323b0bbf68376699a2888d4099689e97601e50d6d19

                              SHA512

                              59d402cd332deca147c5761da109560d294f515e69cf3e0ea004097f529ea44da218e0de274bd84faf93e40a7024da16a33821ab0d58f926345c6e36a8b6a200

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

                              Filesize

                              2.0MB

                              MD5

                              0022f81e42d102d0817f9ba2621f077b

                              SHA1

                              6274e0e9fc2f26dc2128f35d96c46d3e9d9cf874

                              SHA256

                              54988ba51806326275f64addb198137d3807e1fbf3ac03d74eea994be9b65541

                              SHA512

                              aca6a00feec5a63e7fd370890562273bc40fe7c7e8aaac64e60fb020181f565a45126af07ff69402154e9edfad9c619bc27de1b6892483d8b267bea76198b409

                            • memory/836-55-0x00000000737D0000-0x0000000073F80000-memory.dmp

                              Filesize

                              7.7MB

                            • memory/836-47-0x0000000004C70000-0x0000000004C80000-memory.dmp

                              Filesize

                              64KB

                            • memory/836-50-0x00000000737D0000-0x0000000073F80000-memory.dmp

                              Filesize

                              7.7MB

                            • memory/836-49-0x0000000006340000-0x000000000634A000-memory.dmp

                              Filesize

                              40KB

                            • memory/836-45-0x00000000737D0000-0x0000000073F80000-memory.dmp

                              Filesize

                              7.7MB

                            • memory/1148-82-0x00000000737D0000-0x0000000073F80000-memory.dmp

                              Filesize

                              7.7MB

                            • memory/1148-83-0x0000000004F60000-0x0000000004F70000-memory.dmp

                              Filesize

                              64KB

                            • memory/1148-94-0x00000000737D0000-0x0000000073F80000-memory.dmp

                              Filesize

                              7.7MB

                            • memory/2212-58-0x0000000004E10000-0x0000000004E20000-memory.dmp

                              Filesize

                              64KB

                            • memory/2212-96-0x0000000004E10000-0x0000000004E20000-memory.dmp

                              Filesize

                              64KB

                            • memory/2212-95-0x00000000737D0000-0x0000000073F80000-memory.dmp

                              Filesize

                              7.7MB

                            • memory/2212-57-0x00000000737D0000-0x0000000073F80000-memory.dmp

                              Filesize

                              7.7MB

                            • memory/2264-31-0x0000000000400000-0x0000000000420000-memory.dmp

                              Filesize

                              128KB

                            • memory/2264-19-0x0000000000400000-0x0000000000420000-memory.dmp

                              Filesize

                              128KB

                            • memory/3100-21-0x0000000002650000-0x0000000002651000-memory.dmp

                              Filesize

                              4KB

                            • memory/3552-26-0x00000000737D0000-0x0000000073F80000-memory.dmp

                              Filesize

                              7.7MB

                            • memory/3552-33-0x0000000005340000-0x0000000005350000-memory.dmp

                              Filesize

                              64KB

                            • memory/3552-32-0x0000000005200000-0x0000000005292000-memory.dmp

                              Filesize

                              584KB

                            • memory/3552-27-0x00000000057B0000-0x0000000005D54000-memory.dmp

                              Filesize

                              5.6MB

                            • memory/3552-24-0x0000000000860000-0x00000000008BE000-memory.dmp

                              Filesize

                              376KB

                            • memory/3552-46-0x00000000737D0000-0x0000000073F80000-memory.dmp

                              Filesize

                              7.7MB

                            • memory/3552-36-0x0000000002C30000-0x0000000002C96000-memory.dmp

                              Filesize

                              408KB

                            • memory/3552-37-0x0000000005FA0000-0x0000000005FB2000-memory.dmp

                              Filesize

                              72KB

                            • memory/3552-38-0x00000000064E0000-0x000000000651C000-memory.dmp

                              Filesize

                              240KB

                            • memory/5028-97-0x00000000042E0000-0x00000000042E1000-memory.dmp

                              Filesize

                              4KB