Analysis

  • max time kernel
    124s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    08/03/2023, 08:44

General

  • Target

    Rep_97915979.doc

  • Size

    534.3MB

  • MD5

    e7483391a9b507ecbdfa411553650531

  • SHA1

    fdb26fdd782b2ac4dd26bb4e038730c2defb3918

  • SHA256

    a99eb971a4d11235924443dfd0308e731205b6320e6939526d94f91a43c64248

  • SHA512

    e40f21a2919036fca9f54bc7f2926777cb7890195ac22f789bddab0bf9e08403f69fcb493c3214dd9ffdaa65c0812885fd75d119dcd32a59133a3dccc85e1e1d

  • SSDEEP

    6144:xPn4VZXbatu7MDogsDkHS50LdfcGcbz1f5M9KTFrMpSlMK3Ru+Q28:xP4PbNMkgg3Ru+x

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Loads dropped DLL 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Rep_97915979.doc"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1384
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\094701.tmp"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:852
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Users\Admin\AppData\Local\Temp\094701.tmp"
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1600
        • C:\Windows\system32\regsvr32.exe
          C:\Windows\system32\regsvr32.exe "C:\Windows\system32\KzooalA\AIyxiuJ.dll"
          4⤵
            PID:524
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:564

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\094701.tmp

              Filesize

              543.7MB

              MD5

              10d06673f1cdeb8164c37974f22af5e6

              SHA1

              2410d65e5d971d4793e26601ae79aabc3b780811

              SHA256

              0ea8aa916237b8c56266eaa242153eff8f19dd85ade9d6bc0c3c065909415325

              SHA512

              b4142923c6a1c37208f95e59cfb09b4ff885503b0d115a77bf38bc957ee8931b24aeef1895f8e4ff0f7fe7ad3c1eabe3a3c21e9c2b83794a5950ee4f83ce060b

            • C:\Users\Admin\AppData\Local\Temp\094704.zip

              Filesize

              879KB

              MD5

              7d74461b5fd70928dc244547869f8244

              SHA1

              0a69beecdd517a2b9e618147856367fceae23bd4

              SHA256

              335051721cda978a48a4e088a1d1cdf3c982a46a64d438fc153b187eef2eb86b

              SHA512

              4f7c40b88e1abfc258d3a8ae620b1c70c47996f57041d39435f32dcbcc7d318dbc48ca41262a2604dd468db15a30532edab8358b5dc8ee8b1f5f16f02a7d20eb

            • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

              Filesize

              20KB

              MD5

              aa53fa8ba79580a13684b086af4e4a51

              SHA1

              ab29a76e2ceaadef1cd59ef53a5b73441b7bad68

              SHA256

              b9c939cf4c41d7ba5587f838b926dd97b8524e661ccd069b73395fea4add843a

              SHA512

              47859e3d2a0f2461103de1ee1f2ecd21447cba6560b43f55157394b3a3833a8e0b453eca14d4d045cbab724f0537165885da280589554925fbcf30755cf86d32

            • \Users\Admin\AppData\Local\Temp\094701.tmp

              Filesize

              543.7MB

              MD5

              10d06673f1cdeb8164c37974f22af5e6

              SHA1

              2410d65e5d971d4793e26601ae79aabc3b780811

              SHA256

              0ea8aa916237b8c56266eaa242153eff8f19dd85ade9d6bc0c3c065909415325

              SHA512

              b4142923c6a1c37208f95e59cfb09b4ff885503b0d115a77bf38bc957ee8931b24aeef1895f8e4ff0f7fe7ad3c1eabe3a3c21e9c2b83794a5950ee4f83ce060b

            • \Users\Admin\AppData\Local\Temp\094701.tmp

              Filesize

              543.7MB

              MD5

              10d06673f1cdeb8164c37974f22af5e6

              SHA1

              2410d65e5d971d4793e26601ae79aabc3b780811

              SHA256

              0ea8aa916237b8c56266eaa242153eff8f19dd85ade9d6bc0c3c065909415325

              SHA512

              b4142923c6a1c37208f95e59cfb09b4ff885503b0d115a77bf38bc957ee8931b24aeef1895f8e4ff0f7fe7ad3c1eabe3a3c21e9c2b83794a5950ee4f83ce060b

            • memory/524-1270-0x00000000002F0000-0x00000000002F1000-memory.dmp

              Filesize

              4KB

            • memory/1384-76-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-66-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-63-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-67-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-68-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-70-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-71-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-72-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-73-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-74-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

              Filesize

              64KB

            • memory/1384-78-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-77-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-75-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-69-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-65-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-64-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-99-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-103-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-141-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-62-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-1077-0x0000000006180000-0x0000000006181000-memory.dmp

              Filesize

              4KB

            • memory/1384-61-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-60-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-59-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-57-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-58-0x00000000007E0000-0x00000000008E0000-memory.dmp

              Filesize

              1024KB

            • memory/1384-1271-0x0000000006180000-0x0000000006181000-memory.dmp

              Filesize

              4KB

            • memory/1600-1264-0x00000000003A0000-0x00000000003A1000-memory.dmp

              Filesize

              4KB