Analysis

  • max time kernel
    4s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-08-2024 14:32

General

  • Target

    9528643a54d1c5bf778380ffcffc0640N.exe

  • Size

    2.0MB

  • MD5

    9528643a54d1c5bf778380ffcffc0640

  • SHA1

    c485ef36dd7640e4f924416d4c312e1a02b53988

  • SHA256

    df7a0746ef7aa77cf4768a8401f4f099d53775c02105ff69b09c5c7418a04408

  • SHA512

    1f25e23ce74d2b6da2ae150612991d9413fae7d72895f0733acf4d97d506dcd74bea583ff824d1ea5d7147a9602357dbd240ed1372f23476f2c959fd7ab79a54

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKY8:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Yi

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\9528643a54d1c5bf778380ffcffc0640N.exe
    "C:\Users\Admin\AppData\Local\Temp\9528643a54d1c5bf778380ffcffc0640N.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:4552
    • 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:4628
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:1112
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 548
          3⤵
          • Program crash
          PID:1652
      • 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:4924
        • 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:4244
        • 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:4456
          • 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:2704
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\5rsnuXeQpoLj.bat" "
            4⤵
              PID:2848
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:5108
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:3416
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:3768
                    • 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:4620
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\1cRDQ1Nkd0Ko.bat" "
                      6⤵
                        PID:1136
                        • C:\Windows\SysWOW64\chcp.com
                          chcp 65001
                          7⤵
                            PID:1720
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 10 localhost
                            7⤵
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:3948
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -u -p 3768 -s 2220
                          6⤵
                          • Program crash
                          PID:1552
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -u -p 4456 -s 1988
                      4⤵
                      • Program crash
                      PID:4656
                • C:\Users\Admin\AppData\Local\Temp\9528643a54d1c5bf778380ffcffc0640N.exe
                  "C:\Users\Admin\AppData\Local\Temp\9528643a54d1c5bf778380ffcffc0640N.exe"
                  2⤵
                  • System Location Discovery: System Language Discovery
                  PID:2980
                • 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:3204
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4628 -ip 4628
                1⤵
                  PID:4600
                • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                  1⤵
                    PID:2308
                    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                      2⤵
                        PID:2696
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k
                          3⤵
                            PID:1084
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -u -p 2696 -s 520
                            3⤵
                            • Program crash
                            PID:3780
                        • C:\Users\Admin\AppData\Local\Temp\windef.exe
                          "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                          2⤵
                            PID:3540
                          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                            "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                            2⤵
                              PID:3236
                            • 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:868
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2696 -ip 2696
                            1⤵
                              PID:4360
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4456 -ip 4456
                              1⤵
                                PID:220
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3768 -ip 3768
                                1⤵
                                  PID:2932
                                • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                  "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                  1⤵
                                    PID:384
                                  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                    1⤵
                                      PID:3996

                                    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\1cRDQ1Nkd0Ko.bat

                                      Filesize

                                      208B

                                      MD5

                                      db5d4d7d2117d59d060947625a469890

                                      SHA1

                                      5e2f462926ee2e3fcd12d05060025e7562cd3701

                                      SHA256

                                      71917b6e6500a00b023b7fe9ea382b14dda21e8b61390239ffe319adba6f43cd

                                      SHA512

                                      3810ddfba89e154a1354deaa2b986fd71381445a033bcc67c49f3d1c7ec1c0ee04068b21c8c160ff7066ab5197e531f6216ca8cad22e717f6fdea59ca3e24460

                                    • C:\Users\Admin\AppData\Local\Temp\5rsnuXeQpoLj.bat

                                      Filesize

                                      208B

                                      MD5

                                      ba80982b2adc09f07c731195414c80e3

                                      SHA1

                                      4b75647c8f972ae4d320f90aa139c6a63bf01d9b

                                      SHA256

                                      5cca87a29be15e1dec4e7e808c98b3f8a7a0d7d3893c8fbd33495a84bf6719e5

                                      SHA512

                                      1c8a70918ec2c88171dcde85e4ab2bdddccfd838df0c23fcb5fa42a9365bc6a081b39d26295710d5094d7d46c4feeada1bb471b1a2b2fb19511f448c30176656

                                    • 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\08-22-2024

                                      Filesize

                                      224B

                                      MD5

                                      0b6d525f7b516bc34fc341e4638e3a11

                                      SHA1

                                      4e910e866ee18f0142041f9890940437f75c514c

                                      SHA256

                                      c07da97cb18e08fce732689d2031d63f4326786b32d756d465211a1ccd96e059

                                      SHA512

                                      fd0843c45aa122a615126786c8f8c38c6b1dc82006149058b35f9034e57df6af8862dea8005ceb8d061d4c604318ae2ce952f4cf7cdeb61a59d852fcdb217265

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

                                      Filesize

                                      2.0MB

                                      MD5

                                      bfc2ba834d803958bb1fb050f3bfa8a1

                                      SHA1

                                      62e796b5931f1a1b0f06f9d70ee5e50cd391da2d

                                      SHA256

                                      76074b97791cd9b9575319f83bdeaa85fcb3989f8db74d048b1066a294abdae8

                                      SHA512

                                      63bd560272f9e78c57305b61f3a9d880937d800403eafb63112500d1d5fa0c247ebb71804a5bb76b9743871c4287ed3f6273426a2cf28027a15a04126984176f

                                    • memory/2980-28-0x0000000000400000-0x0000000000420000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/2980-20-0x0000000000400000-0x0000000000420000-memory.dmp

                                      Filesize

                                      128KB

                                    • memory/4456-45-0x0000000006270000-0x000000000627A000-memory.dmp

                                      Filesize

                                      40KB

                                    • memory/4552-19-0x0000000001F70000-0x0000000001F71000-memory.dmp

                                      Filesize

                                      4KB

                                    • memory/4924-36-0x00000000063D0000-0x00000000063E2000-memory.dmp

                                      Filesize

                                      72KB

                                    • memory/4924-37-0x0000000006910000-0x000000000694C000-memory.dmp

                                      Filesize

                                      240KB

                                    • memory/4924-35-0x0000000005700000-0x0000000005766000-memory.dmp

                                      Filesize

                                      408KB

                                    • memory/4924-34-0x0000000005660000-0x00000000056F2000-memory.dmp

                                      Filesize

                                      584KB

                                    • memory/4924-33-0x0000000005B20000-0x00000000060C4000-memory.dmp

                                      Filesize

                                      5.6MB

                                    • memory/4924-32-0x0000000000C80000-0x0000000000CDE000-memory.dmp

                                      Filesize

                                      376KB

                                    • memory/4924-29-0x00000000736FE000-0x00000000736FF000-memory.dmp

                                      Filesize

                                      4KB