Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    16-12-2024 06:56

General

  • Target

    System32.exe

  • Size

    5.3MB

  • MD5

    d4817ea043beaf35d19fa6a5adaa179c

  • SHA1

    bf5c75100142731e737c04b55769c4479bef0c01

  • SHA256

    da5844b02ebfa56b4c036ea50136e7766922fa1591d344130f5492e5624fdf5d

  • SHA512

    98d2f67523de2260cad45ce2b3f0e6edd5322ad4d2d78854983c3410398079f1a0dd3f8b3dc69d3e0f052c566de3eb89d1de9a086378f542b1a2096ce0730277

  • SSDEEP

    98304:euP+GgrLRHeOxxsJFoQYVCkOTfOKfKQMZ8htPwCakmxrcTZcV+TQB:l+GgLRJghYckmmKfFMZqtMkicZcV2e

Malware Config

Extracted

Family

redline

Botnet

duc

C2

159.223.34.114:1912

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine payload 2 IoCs
  • Redline family
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 6 IoCs
  • Checks BIOS information in registry 2 TTPs 12 IoCs

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

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 6 IoCs
  • Themida packer 15 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 6 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
  • Drops file in Windows directory 5 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\System32.exe
    "C:\Users\Admin\AppData\Local\Temp\System32.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2996
    • \??\c:\users\admin\appdata\local\temp\system32.exe 
      c:\users\admin\appdata\local\temp\system32.exe 
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2488
    • C:\Windows\Resources\Themes\icsys.icn.exe
      C:\Windows\Resources\Themes\icsys.icn.exe
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2812
      • \??\c:\windows\resources\themes\explorer.exe
        c:\windows\resources\themes\explorer.exe
        3⤵
        • Modifies visiblity of hidden/system files in Explorer
        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
        • Checks BIOS information in registry
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in System32 directory
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2752
        • \??\c:\windows\resources\spoolsv.exe
          c:\windows\resources\spoolsv.exe SE
          4⤵
          • Identifies VirtualBox via ACPI registry values (likely anti-VM)
          • Checks BIOS information in registry
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks whether UAC is enabled
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:264
          • \??\c:\windows\resources\svchost.exe
            c:\windows\resources\svchost.exe
            5⤵
            • Modifies visiblity of hidden/system files in Explorer
            • Identifies VirtualBox via ACPI registry values (likely anti-VM)
            • Checks BIOS information in registry
            • Executes dropped EXE
            • Loads dropped DLL
            • Adds Run key to start application
            • Checks whether UAC is enabled
            • Drops file in System32 directory
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:572
            • \??\c:\windows\resources\spoolsv.exe
              c:\windows\resources\spoolsv.exe PR
              6⤵
              • Identifies VirtualBox via ACPI registry values (likely anti-VM)
              • Checks BIOS information in registry
              • Executes dropped EXE
              • Checks whether UAC is enabled
              • Suspicious use of NtSetInformationThreadHideFromDebugger
              • System Location Discovery: System Language Discovery
              • Suspicious use of SetWindowsHookEx
              PID:2208
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 06:59 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:2076
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 07:00 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:1472
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 07:01 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:1784
        • C:\Windows\Explorer.exe
          C:\Windows\Explorer.exe
          4⤵
            PID:1768

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • \Users\Admin\AppData\Local\Temp\system32.exe 

      Filesize

      300KB

      MD5

      c368cb0e4cc65cbdc012e449de37d973

      SHA1

      ae04d634ff3078e1912dc71d44c893c1dd47c399

      SHA256

      57a8157689acab60874b086408091b4369f3f5f9d62bcc306c9e77ff9f3c5b7e

      SHA512

      e823a91ee1f8901ebc844d16ed1c585bd78fcf6fa143433649c1295f3724ddd29679949ec7b97485505b259e4ce7d012948f971451f0bde6b525cc915e3ed18a

    • \Windows\Resources\Themes\explorer.exe

      Filesize

      5.6MB

      MD5

      9d7f869cb95cf77b96e0cae8013c0ab5

      SHA1

      c8f0e05dc8a1c90f6ce1aca4f2bb04a154568c44

      SHA256

      c059d41046f8b602ac1fafe697023edda45c020f6c8e7789bd653cee24ff77b2

      SHA512

      a09bc1bf450868eba56242dd3ea5b0139d8a6f36e04afad0dcc4de6a452da0aca918595b4dfc102ef3cd3fac147b831259062865a98306e803ce6f0cfe1c39c5

    • \Windows\Resources\Themes\icsys.icn.exe

      Filesize

      5.0MB

      MD5

      6a696257bd624ea0cdde713ff447b134

      SHA1

      fa17806195d1fb5a2077a7d43827f58832d57c35

      SHA256

      c2234864d3687f6eb397fc0fe4c81d2c54dbcf74161ab38b48a1150df753c573

      SHA512

      b49ac9b20ab4f1c8b7793f1c007ee7985f9c11c0c5c67cf99436f22275efca504a20480a0d6cf52c793060eb78f090a66d33a5f37bffe678591b16a55d7d94ae

    • \Windows\Resources\spoolsv.exe

      Filesize

      5.6MB

      MD5

      5b0ce8770360031568ccded52e678326

      SHA1

      ec875b0eeeb086197450952403d2459988940dd8

      SHA256

      553d343cad26bce3bb341ca3d3d11215bc33697979b11eae4101a4a7498ce9aa

      SHA512

      2c5852144738bae7ea86312c88cd16798d7057a547acc9017fda305471bde839c7f591c3df6f05cf313993afee900e5f1700c74e1cf68910760037dd05481520

    • \Windows\Resources\svchost.exe

      Filesize

      5.6MB

      MD5

      ea55ef9f6c5d64056b6e78d65832f66d

      SHA1

      0530f28096037301433f6eb936b416a480c11591

      SHA256

      232ffc7ac80dee45a0ddfe14750a90b451e355b35bd14e4d0aa71b0ee68c427d

      SHA512

      f2d1b126a6de3d74c41425f0339454d701240f260acf6e0dc2fbb34e3718a78ddf74185ce9b8bc27cef089d73be1d6aea45a5c01683a333c0566273fdfcabdf9

    • memory/264-58-0x0000000003BC0000-0x00000000047A2000-memory.dmp

      Filesize

      11.9MB

    • memory/264-71-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/572-76-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2208-69-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2488-21-0x0000000073F60000-0x000000007464E000-memory.dmp

      Filesize

      6.9MB

    • memory/2488-17-0x0000000073F6E000-0x0000000073F6F000-memory.dmp

      Filesize

      4KB

    • memory/2488-14-0x0000000073F60000-0x000000007464E000-memory.dmp

      Filesize

      6.9MB

    • memory/2488-13-0x0000000000DF0000-0x0000000000E42000-memory.dmp

      Filesize

      328KB

    • memory/2488-12-0x0000000073F6E000-0x0000000073F6F000-memory.dmp

      Filesize

      4KB

    • memory/2752-74-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2752-42-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2752-87-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2812-24-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2812-36-0x0000000003DA0000-0x0000000004982000-memory.dmp

      Filesize

      11.9MB

    • memory/2812-73-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2996-15-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2996-32-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2996-23-0x0000000003730000-0x0000000004312000-memory.dmp

      Filesize

      11.9MB

    • memory/2996-0-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2996-1-0x0000000077270000-0x0000000077272000-memory.dmp

      Filesize

      8KB