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Analysis

  • max time kernel
    148s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    24/02/2024, 11:41

General

  • Target

    a1c74b76787397db083fba47e8bb0c8b.exe

  • Size

    140KB

  • MD5

    a1c74b76787397db083fba47e8bb0c8b

  • SHA1

    bfe9295328413988e0ff7008811995001ec9a37a

  • SHA256

    d3af45ecbaf32ade73d19be6fe41f29f9c2555bbff252ef5c947fbabb58df11b

  • SHA512

    1a52302992bac6a9e61b06375541a5612341e42cea6f74551a30de9c543f55583746c2bb0e53b691f1c2e580c2c0a5fa662b8dd21496017b0321b31987dc8980

  • SSDEEP

    3072:v6rAy2dKrI+58JrYE5JOsJ8zRXSTE9qSPKs:SMy2dMIm8uE5L84E9qSPKs

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 10 IoCs
  • Loads dropped DLL 20 IoCs
  • Drops file in System32 directory 22 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a1c74b76787397db083fba47e8bb0c8b.exe
    "C:\Users\Admin\AppData\Local\Temp\a1c74b76787397db083fba47e8bb0c8b.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:2276
    • C:\Windows\SysWOW64\sysrv.exe
      C:\Windows\system32\sysrv.exe 476 "C:\Users\Admin\AppData\Local\Temp\a1c74b76787397db083fba47e8bb0c8b.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2012
      • C:\Windows\SysWOW64\sysrv.exe
        C:\Windows\system32\sysrv.exe 528 "C:\Windows\SysWOW64\sysrv.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:2692
        • C:\Windows\SysWOW64\sysrv.exe
          C:\Windows\system32\sysrv.exe 548 "C:\Windows\SysWOW64\sysrv.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in System32 directory
          • Suspicious use of WriteProcessMemory
          PID:2820
          • C:\Windows\SysWOW64\sysrv.exe
            C:\Windows\system32\sysrv.exe 532 "C:\Windows\SysWOW64\sysrv.exe"
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Drops file in System32 directory
            • Suspicious use of WriteProcessMemory
            PID:2532
            • C:\Windows\SysWOW64\sysrv.exe
              C:\Windows\system32\sysrv.exe 536 "C:\Windows\SysWOW64\sysrv.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Drops file in System32 directory
              • Suspicious use of WriteProcessMemory
              PID:2812
              • C:\Windows\SysWOW64\sysrv.exe
                C:\Windows\system32\sysrv.exe 540 "C:\Windows\SysWOW64\sysrv.exe"
                7⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • Drops file in System32 directory
                • Suspicious use of WriteProcessMemory
                PID:2816
                • C:\Windows\SysWOW64\sysrv.exe
                  C:\Windows\system32\sysrv.exe 544 "C:\Windows\SysWOW64\sysrv.exe"
                  8⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • Drops file in System32 directory
                  • Suspicious use of WriteProcessMemory
                  PID:1312
                  • C:\Windows\SysWOW64\sysrv.exe
                    C:\Windows\system32\sysrv.exe 552 "C:\Windows\SysWOW64\sysrv.exe"
                    9⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Drops file in System32 directory
                    • Suspicious use of WriteProcessMemory
                    PID:1408
                    • C:\Windows\SysWOW64\sysrv.exe
                      C:\Windows\system32\sysrv.exe 556 "C:\Windows\SysWOW64\sysrv.exe"
                      10⤵
                      • Executes dropped EXE
                      • Loads dropped DLL
                      • Drops file in System32 directory
                      • Suspicious use of WriteProcessMemory
                      PID:536
                      • C:\Windows\SysWOW64\sysrv.exe
                        C:\Windows\system32\sysrv.exe 560 "C:\Windows\SysWOW64\sysrv.exe"
                        11⤵
                        • Executes dropped EXE
                        • Drops file in System32 directory
                        PID:1660

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • \Windows\SysWOW64\sysrv.exe

    Filesize

    140KB

    MD5

    a1c74b76787397db083fba47e8bb0c8b

    SHA1

    bfe9295328413988e0ff7008811995001ec9a37a

    SHA256

    d3af45ecbaf32ade73d19be6fe41f29f9c2555bbff252ef5c947fbabb58df11b

    SHA512

    1a52302992bac6a9e61b06375541a5612341e42cea6f74551a30de9c543f55583746c2bb0e53b691f1c2e580c2c0a5fa662b8dd21496017b0321b31987dc8980

  • memory/536-60-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/1312-48-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/1312-50-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/1408-56-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/1408-54-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/1660-68-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/1660-66-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2012-12-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2012-14-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2276-13-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2276-0-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2532-32-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2532-30-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2692-20-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2692-18-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2812-36-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2816-44-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2816-42-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2820-26-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB

  • memory/2820-24-0x0000000000400000-0x000000000048E000-memory.dmp

    Filesize

    568KB