Analysis

  • max time kernel
    2s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    19-03-2024 19:59

General

  • Target

    4d76ac906021bbc02781841d340f03eaae289d58ce4ed1457e5b539717afb30b.exe

  • Size

    2.0MB

  • MD5

    5c0df4a7294cacdab88a72ffa4ba72e3

  • SHA1

    f9f097e6976cf0d6376a2fcad99db5355dcffa18

  • SHA256

    4d76ac906021bbc02781841d340f03eaae289d58ce4ed1457e5b539717afb30b

  • SHA512

    9b07a660d1037d444f6e370bbe481a33dcc572aeb0388fd8a6bb3403335a1ab9e9d40d5decfef9102c809115153276721e25ceb2c8aa736f406dc8fd32cbdeab

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYW:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YQ

Malware Config

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

Extracted

Family

azorult

C2

http://0x21.in:8000/_az/

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
  • Detects Windows executables referencing non-Windows User-Agents 5 IoCs
  • Detects executables containing common artifacts observed in infostealers 5 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 8 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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4d76ac906021bbc02781841d340f03eaae289d58ce4ed1457e5b539717afb30b.exe
    "C:\Users\Admin\AppData\Local\Temp\4d76ac906021bbc02781841d340f03eaae289d58ce4ed1457e5b539717afb30b.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2872
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2920
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
        • Maps connected drives based on registry
        PID:2584
    • C:\Users\Admin\AppData\Local\Temp\windef.exe
      "C:\Users\Admin\AppData\Local\Temp\windef.exe"
      2⤵
      • Executes dropped EXE
      PID:2600
      • 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:1540
      • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
        3⤵
          PID:296
          • 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:112
      • C:\Users\Admin\AppData\Local\Temp\4d76ac906021bbc02781841d340f03eaae289d58ce4ed1457e5b539717afb30b.exe
        "C:\Users\Admin\AppData\Local\Temp\4d76ac906021bbc02781841d340f03eaae289d58ce4ed1457e5b539717afb30b.exe"
        2⤵
          PID:2692
        • 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:2572
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {835697D5-90AD-4A3F-8AA1-E7690A5D46BE} S-1-5-21-2721934792-624042501-2768869379-1000:BISMIZHX\Admin:Interactive:[1]
        1⤵
          PID:1452
          • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
            C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
            2⤵
              PID:2040
              • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                3⤵
                  PID:2496
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k
                    4⤵
                      PID:324
                  • C:\Users\Admin\AppData\Local\Temp\windef.exe
                    "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                    3⤵
                      PID:2228
                    • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                      "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe"
                      3⤵
                        PID:2064
                      • 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
                        3⤵
                        • Creates scheduled task(s)
                        PID:1140

                  Network

                  MITRE ATT&CK Matrix ATT&CK v13

                  Execution

                  Scheduled Task/Job

                  1
                  T1053

                  Persistence

                  Scheduled Task/Job

                  1
                  T1053

                  Privilege Escalation

                  Scheduled Task/Job

                  1
                  T1053

                  Discovery

                  Query Registry

                  2
                  T1012

                  Peripheral Device Discovery

                  2
                  T1120

                  System Information Discovery

                  3
                  T1082

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                    MD5

                    d41d8cd98f00b204e9800998ecf8427e

                    SHA1

                    da39a3ee5e6b4b0d3255bfef95601890afd80709

                    SHA256

                    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                    SHA512

                    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

                    2.0MB

                    MD5

                    0dfb90421e49a673881eb0028b04ba17

                    SHA1

                    f8fde621583e7a372477b4c39350042e396a3633

                    SHA256

                    ceb12b534e75ee77c966f7f0d8f9668b7a8e39ef2e5108ecf805d2eca897741c

                    SHA512

                    9c1d12d939133cd18176c5cdcda606781ed4e624af9ff96170906323b6d6fd077e40a9ce15207276bc05146aa6b3e922a7b17560b08f47f0b4dae52bdf0c4311

                  • \Users\Admin\AppData\Local\Temp\vnc.exe
                    Filesize

                    405KB

                    MD5

                    b8ba87ee4c3fc085a2fed0d839aadce1

                    SHA1

                    b3a2e3256406330e8b1779199bb2b9865122d766

                    SHA256

                    4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4

                    SHA512

                    7a775a12cd5bcd182d64be0d31f800b456ca6d1b531189cea9c72e1940871cfe92ccd005938f67bfa4784ae44c54b3a7ea29a5bb59766e98c78bf53b680f2ab2

                  • \Users\Admin\AppData\Local\Temp\windef.exe
                    Filesize

                    349KB

                    MD5

                    b4a202e03d4135484d0e730173abcc72

                    SHA1

                    01b30014545ea526c15a60931d676f9392ea0c70

                    SHA256

                    7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9

                    SHA512

                    632a035a3b722ea29b02aad1f0da3df5bdc38abc7e6617223790955c6c0830f1070b528680416d5c63ea5e846074cdad87f06c21c35a77b1ccc4edc089d8b1fb

                  • memory/296-68-0x0000000000260000-0x00000000002BE000-memory.dmp
                    Filesize

                    376KB

                  • memory/296-133-0x0000000004A80000-0x0000000004AC0000-memory.dmp
                    Filesize

                    256KB

                  • memory/296-132-0x0000000074110000-0x00000000747FE000-memory.dmp
                    Filesize

                    6.9MB

                  • memory/296-69-0x0000000004A80000-0x0000000004AC0000-memory.dmp
                    Filesize

                    256KB

                  • memory/296-66-0x0000000074110000-0x00000000747FE000-memory.dmp
                    Filesize

                    6.9MB

                  • memory/324-125-0x0000000000020000-0x0000000000021000-memory.dmp
                    Filesize

                    4KB

                  • memory/324-124-0x00000000004A0000-0x000000000053C000-memory.dmp
                    Filesize

                    624KB

                  • memory/324-122-0x000007FFFFFDC000-0x000007FFFFFDD000-memory.dmp
                    Filesize

                    4KB

                  • memory/324-126-0x00000000004A0000-0x000000000053C000-memory.dmp
                    Filesize

                    624KB

                  • memory/324-130-0x00000000004A0000-0x000000000053C000-memory.dmp
                    Filesize

                    624KB

                  • memory/2064-111-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
                    Filesize

                    4KB

                  • memory/2228-131-0x0000000074110000-0x00000000747FE000-memory.dmp
                    Filesize

                    6.9MB

                  • memory/2228-117-0x0000000074110000-0x00000000747FE000-memory.dmp
                    Filesize

                    6.9MB

                  • memory/2228-119-0x0000000001340000-0x000000000139E000-memory.dmp
                    Filesize

                    376KB

                  • memory/2228-123-0x0000000004850000-0x0000000004890000-memory.dmp
                    Filesize

                    256KB

                  • memory/2584-42-0x000007FFFFFDC000-0x000007FFFFFDD000-memory.dmp
                    Filesize

                    4KB

                  • memory/2584-39-0x0000000000020000-0x0000000000021000-memory.dmp
                    Filesize

                    4KB

                  • memory/2584-58-0x0000000000020000-0x0000000000021000-memory.dmp
                    Filesize

                    4KB

                  • memory/2584-45-0x00000000001A0000-0x000000000023C000-memory.dmp
                    Filesize

                    624KB

                  • memory/2584-56-0x00000000001A0000-0x000000000023C000-memory.dmp
                    Filesize

                    624KB

                  • memory/2584-54-0x00000000001A0000-0x000000000023C000-memory.dmp
                    Filesize

                    624KB

                  • memory/2600-55-0x0000000074110000-0x00000000747FE000-memory.dmp
                    Filesize

                    6.9MB

                  • memory/2600-57-0x0000000004AF0000-0x0000000004B30000-memory.dmp
                    Filesize

                    256KB

                  • memory/2600-67-0x0000000074110000-0x00000000747FE000-memory.dmp
                    Filesize

                    6.9MB

                  • memory/2600-36-0x0000000000DC0000-0x0000000000E1E000-memory.dmp
                    Filesize

                    376KB

                  • memory/2692-53-0x0000000000080000-0x00000000000A0000-memory.dmp
                    Filesize

                    128KB

                  • memory/2692-43-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp
                    Filesize

                    4KB

                  • memory/2692-33-0x0000000000080000-0x00000000000A0000-memory.dmp
                    Filesize

                    128KB

                  • memory/2692-29-0x0000000000080000-0x00000000000A0000-memory.dmp
                    Filesize

                    128KB

                  • memory/2872-30-0x0000000000E00000-0x0000000000E01000-memory.dmp
                    Filesize

                    4KB