Resubmissions

23-11-2022 09:41

221123-ln2ggabh29 10

22-11-2022 22:00

221122-1wslvsea4y 10

Analysis

  • max time kernel
    102s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    22-11-2022 22:00

General

  • Target

    0d2d6881a1217e2d4fac370e22db7cc094d3a95c46b74957541ae8fcd20e3fea.xls

  • Size

    308KB

  • MD5

    42a76635b4ce4e7bf708a738ab24ed6a

  • SHA1

    3add63d07d71fa58aec69ddfb74f61e8a0556999

  • SHA256

    0d2d6881a1217e2d4fac370e22db7cc094d3a95c46b74957541ae8fcd20e3fea

  • SHA512

    1b7dcef7644e68ca5352090efab7cf5467a1f590e34993d2a4d5f9bec8ca367772de932e2341ad34cf9610402d0e089c41c178000bd47b753a234e03849566e0

  • SSDEEP

    6144:2l6Nc7yRzs1H75wkZUgsQ6NqTBun5oOFRynDDaU05XQ/zuqsfqHh7dClDwXP+ZrZ:FynDdJzkf0CSXPQo1Nf

Malware Config

Signatures

  • Process spawned unexpected child process 6 IoCs

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

  • Office macro that triggers on suspicious action 1 IoCs

    Office document macro which triggers in special circumstances - often malicious.

  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Suspicious Office macro 1 IoCs

    Office document equipped with 4.0 macros.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 9 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs
  • Views/modifies file attributes 1 TTPs 4 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\0d2d6881a1217e2d4fac370e22db7cc094d3a95c46b74957541ae8fcd20e3fea.xls
    1⤵
    • Adds Run key to start application
    • Drops file in System32 directory
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1356
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c attrib -s -h c:\setflag.exe
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:584
      • C:\Windows\SysWOW64\attrib.exe
        attrib -s -h c:\setflag.exe
        3⤵
        • Views/modifies file attributes
        PID:636
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c attrib -s -h c:\sendto.exe
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:696
      • C:\Windows\SysWOW64\attrib.exe
        attrib -s -h c:\sendto.exe
        3⤵
        • Views/modifies file attributes
        PID:528
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c extrac32 /E /Y /L c:\ c:\cab.cab
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1652
      • C:\Windows\SysWOW64\extrac32.exe
        extrac32 /E /Y /L c:\ c:\cab.cab
        3⤵
          PID:916
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c extract /E /Y /L c:\ c:\cab.cab
        2⤵
        • Process spawned unexpected child process
        PID:1128
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c attrib +s +h c:\setflag.exe
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:1436
        • C:\Windows\SysWOW64\attrib.exe
          attrib +s +h c:\setflag.exe
          3⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:1020
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c attrib +s +h c:\sendto.exe
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:1632
        • C:\Windows\SysWOW64\attrib.exe
          attrib +s +h c:\sendto.exe
          3⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:1484
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /Automation -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:760

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\sendto.exe

      Filesize

      20KB

      MD5

      56bafcef305ce46d847421edd6eec04b

      SHA1

      e6e31dda260fee10b63c4dd297b433749ea7ac07

      SHA256

      3c6d90fdf13ef66dd36631796cd50db01dfb8e2db5b472c45202513ab816f272

      SHA512

      c78210f40daa6e2827d1280eaca5ae22cf036d20ff802826171cfdaf2b64a011f32c8689eec174d3375e197b240e4c92a2fb466b01c66a96e9276cd1de160e20

    • C:\setflag.exe

      Filesize

      32KB

      MD5

      a4f9be8517afb4c5d9c63960a5faf258

      SHA1

      6d3300bfc43b191819f687df91bfbe2c6294d6bb

      SHA256

      78b6db289832df709d17fd5c49359ddfb9cacaa8303cd77290427bac4c829ba2

      SHA512

      c6c918bc91ed645553245cc640ed66882af264035732b8a8c2682f14a9c8f183c38837c1b3e62ca7d16e1560e6bc2a4273b41c9614a046752928c9a0c45ecb2e

    • \??\c:\cab.cab

      Filesize

      70KB

      MD5

      5a876443f36ca54efae1c723041435c0

      SHA1

      7ebd6188c3df725008209b7d24f914b2b3ce0a6c

      SHA256

      02397a86f99f98f212adee047d25c56fa6644a3cf6058ddb0da0221d708f1ee9

      SHA512

      a065a1ed747b8348c49c909e7186da584a3f01bca4652b154d5f7f88c4de15c5f0c03884db5cf33bca9035944cf5c7bc6983571301dd0fa4d7c298942887a149

    • \??\c:\internet.exe

      Filesize

      24KB

      MD5

      072ca9f791665febeacda1be1e71a124

      SHA1

      20d6d75ef7e06c72b43a2e3be81f5ceab11a1a5a

      SHA256

      692bfa3ca595a0ed57dd1d5fa6652332162c90ea0c9b8c9b32ddbebbec063f3d

      SHA512

      3cd1c0727085dcc054b1c9111c934fef3473d57a91e1e247418a220e35c59e495282740621d6c9c01c86a39ad4e5c79d7d95dbd289e25f044cfad1f616d52290

    • \??\c:\norma1.xlm

      Filesize

      68KB

      MD5

      3f08a7010fe4ea32b210b7919448ada6

      SHA1

      c7bc3bb8f78ef217b83c593542b5c4cf602746a2

      SHA256

      506260a97f723ce79e3243b651dc8af1c3fcdbf72431be60b1a0afbab8d2dce9

      SHA512

      be8ac3dcb6574e6876c2f8d2e40c1c6ad75ca611275ccc73c7283f6b17f3956c16c14d9dfa10e36576011baa691378a8ce6115e380b821a2d6f549ea46567b4c

    • \??\c:\normal.dot

      Filesize

      103KB

      MD5

      26ab77fe4d542805e0afdc9d0efc92c2

      SHA1

      332dc776b13e8f04809a312183ef9532ea2b18d3

      SHA256

      1cb2d969e56664ddc1f496c63e424cbe1ce2f560f8350f4ffa451f0fc03006d9

      SHA512

      ef439dbbe390eb175bd9970d76827a6b506b88a4db7cda233d8b6591b22e3c7a454cbb8111ca78dbbd6b195c91aa89c7d0c9df952052d3471eb07ac80f98b89a

    • memory/528-64-0x0000000000000000-mapping.dmp

    • memory/584-61-0x0000000000000000-mapping.dmp

    • memory/636-62-0x0000000000000000-mapping.dmp

    • memory/696-63-0x0000000000000000-mapping.dmp

    • memory/760-83-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/760-74-0x00000000722ED000-0x00000000722F8000-memory.dmp

      Filesize

      44KB

    • memory/760-85-0x00000000722ED000-0x00000000722F8000-memory.dmp

      Filesize

      44KB

    • memory/760-70-0x000000006B231000-0x000000006B234000-memory.dmp

      Filesize

      12KB

    • memory/916-66-0x0000000000000000-mapping.dmp

    • memory/1020-78-0x0000000000000000-mapping.dmp

    • memory/1128-68-0x0000000000000000-mapping.dmp

    • memory/1356-58-0x0000000075591000-0x0000000075593000-memory.dmp

      Filesize

      8KB

    • memory/1356-60-0x0000000000559000-0x000000000055D000-memory.dmp

      Filesize

      16KB

    • memory/1356-59-0x0000000000559000-0x000000000055D000-memory.dmp

      Filesize

      16KB

    • memory/1356-54-0x000000002FE71000-0x000000002FE74000-memory.dmp

      Filesize

      12KB

    • memory/1356-57-0x00000000722ED000-0x00000000722F8000-memory.dmp

      Filesize

      44KB

    • memory/1356-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1356-84-0x00000000722ED000-0x00000000722F8000-memory.dmp

      Filesize

      44KB

    • memory/1356-55-0x0000000071301000-0x0000000071303000-memory.dmp

      Filesize

      8KB

    • memory/1356-87-0x00000000722ED000-0x00000000722F8000-memory.dmp

      Filesize

      44KB

    • memory/1436-77-0x0000000000000000-mapping.dmp

    • memory/1484-81-0x0000000000000000-mapping.dmp

    • memory/1632-80-0x0000000000000000-mapping.dmp

    • memory/1652-65-0x0000000000000000-mapping.dmp