Analysis

  • max time kernel
    150s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16-12-2024 06:50

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 16 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:3016
    • \??\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:2740
    • 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:2824
      • \??\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:2816
        • \??\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:2608
          • \??\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:2612
            • \??\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:2348
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 06:52 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:2416
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 06:53 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:2924
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 06:54 /f
              6⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:1724
        • C:\Windows\Explorer.exe
          C:\Windows\Explorer.exe
          4⤵
            PID:2008

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\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

      c025600c06d6db3b037bb5b8fb2d337b

      SHA1

      0dcc1e7ccc55f47412cf05ccb542ad5f5c14df58

      SHA256

      1daef21898ec8dbe9307bd23908c9fa28160ff1ba58598f90bea06a90f6244bc

      SHA512

      b31de89ddad12d185425a771a9578fe213f5720331ed45473f3c9c1d8997260ed2dd2c0fc8677ed5523a8caec39f18f3d088cf7465d0a2a231c4bce1a2804387

    • \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

      02a09923cbb5ff23620ccf1399f32a1a

      SHA1

      8806d3fef41988ee6f9782e9495f64b39dc3900c

      SHA256

      41bca131bee28475658d2e4b24e94e161d22bf45cc647b0d5f9822208fff63f7

      SHA512

      43c54332cfee628d5fdeeb3bc162315f285173c0cbb24a7a16640e0e4e46912fa12f016b767906efefaee0c000b63b447e436a7b28ce8e6056174500efe2496a

    • \Windows\Resources\svchost.exe

      Filesize

      5.6MB

      MD5

      fc0403e506d339c3a2ba2cb667d8282d

      SHA1

      a44a5a33e02ec4c1825484f47c38c8c0cee1f6ba

      SHA256

      e70ca86d6cf92c09c711b0a13befa85b9d63bf7adc037ea852b22801fa459479

      SHA512

      53fd4cf8bd1e02e8176ddcec47909559281fae370e0e06867befaa497a8e116527fab3b439f15a0db6e7583bf9f9d2e0920e58e6a809733e4029d753b15208e0

    • memory/2348-68-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2608-57-0x0000000003A70000-0x0000000004652000-memory.dmp

      Filesize

      11.9MB

    • memory/2608-47-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2608-70-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2612-78-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2740-12-0x000000007473E000-0x000000007473F000-memory.dmp

      Filesize

      4KB

    • memory/2740-14-0x0000000074730000-0x0000000074E1E000-memory.dmp

      Filesize

      6.9MB

    • memory/2740-13-0x0000000000AA0000-0x0000000000AF2000-memory.dmp

      Filesize

      328KB

    • memory/2740-17-0x000000007473E000-0x000000007473F000-memory.dmp

      Filesize

      4KB

    • memory/2740-21-0x0000000074730000-0x0000000074E1E000-memory.dmp

      Filesize

      6.9MB

    • memory/2816-36-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2816-89-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2816-76-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2824-74-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/2824-35-0x0000000003B80000-0x0000000004762000-memory.dmp

      Filesize

      11.9MB

    • memory/2824-24-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/3016-1-0x0000000077A30000-0x0000000077A32000-memory.dmp

      Filesize

      8KB

    • memory/3016-75-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/3016-71-0x0000000003880000-0x0000000004462000-memory.dmp

      Filesize

      11.9MB

    • memory/3016-0-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/3016-15-0x0000000000400000-0x0000000000FE2000-memory.dmp

      Filesize

      11.9MB

    • memory/3016-23-0x0000000003880000-0x0000000004462000-memory.dmp

      Filesize

      11.9MB