Analysis

  • max time kernel
    112s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    10-03-2023 18:46

General

  • Target

    2023-03-08_1338.doc

  • Size

    522.3MB

  • MD5

    2148a6a2bef5a35ce5665cbc12d5e474

  • SHA1

    2e87b33309c888ab7d655e92a45a31f15753fdee

  • SHA256

    f616da0ebb4f984aecd40da922c0cdf70987643a86afadc969aa76598120cd5d

  • SHA512

    fb232985018569cdbba001273278a6128af1395e1dc4631b023a0c49fefffd43a93dd6b0332c2cc634aa87d850ea2866614cacb6b064e57f4d48c7b41b60ea4c

  • 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\2023-03-08_1338.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:1920
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\194739.tmp"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:892
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Users\Admin\AppData\Local\Temp\194739.tmp"
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1816
        • C:\Windows\system32\regsvr32.exe
          C:\Windows\system32\regsvr32.exe "C:\Windows\system32\LbKxjQ\tznFOJY.dll"
          4⤵
            PID:1784
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        2⤵
          PID:1608

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\194739.tmp

        Filesize

        543.7MB

        MD5

        1cd2550e072ec2792339b133005549ed

        SHA1

        c2839a8bc63517bcee9ec16a222690e0f8aa3a74

        SHA256

        af9f8a5c3e4edb4798c25b6fe3e41eeba5d4a41782dbf81a7ba5b3a93652a02a

        SHA512

        e77442d144cad2635a3078a5359b24d9febc164fdfb6424cff5b4d02775ece2df3bdf6575170a9eec9b1d3ce22370efb726c9c611db86fac8d530ce2e9a7903e

      • C:\Users\Admin\AppData\Local\Temp\194743.zip

        Filesize

        867KB

        MD5

        6c839d892fef2f37d973ca28ce5e7a3b

        SHA1

        175ee07dc770ad81455d1f95152f1ae07e875e0e

        SHA256

        b2f19314b692f584203e6711e8d54f32b91a7864adbd203a4eaf6785042d47d9

        SHA512

        18a1ffa1876554a0e7716cbe5d77ce26a373aeb16992986bb8baaece2af502b576d7001a4271ceda09cec6fbbe750c06c8d40d4449ff8b52d01a924a49462af7

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

        Filesize

        20KB

        MD5

        295adcc5257c277902ba91389c257494

        SHA1

        ad4d6491e1b712fdc9b99af2db9994168fa48139

        SHA256

        f0971f311547939e5f6099edfeb3ae573dacb575bb982e06058a7c13a219310d

        SHA512

        78f73f841e1cc651140c22f05faebffcf566623c6dbfd1025e2a9d37a570014a3815fdba4bff004397370f7763c3272080e533fc85742b8bf4974ec936a40f91

      • \Users\Admin\AppData\Local\Temp\194739.tmp

        Filesize

        543.7MB

        MD5

        1cd2550e072ec2792339b133005549ed

        SHA1

        c2839a8bc63517bcee9ec16a222690e0f8aa3a74

        SHA256

        af9f8a5c3e4edb4798c25b6fe3e41eeba5d4a41782dbf81a7ba5b3a93652a02a

        SHA512

        e77442d144cad2635a3078a5359b24d9febc164fdfb6424cff5b4d02775ece2df3bdf6575170a9eec9b1d3ce22370efb726c9c611db86fac8d530ce2e9a7903e

      • \Users\Admin\AppData\Local\Temp\194739.tmp

        Filesize

        543.7MB

        MD5

        1cd2550e072ec2792339b133005549ed

        SHA1

        c2839a8bc63517bcee9ec16a222690e0f8aa3a74

        SHA256

        af9f8a5c3e4edb4798c25b6fe3e41eeba5d4a41782dbf81a7ba5b3a93652a02a

        SHA512

        e77442d144cad2635a3078a5359b24d9febc164fdfb6424cff5b4d02775ece2df3bdf6575170a9eec9b1d3ce22370efb726c9c611db86fac8d530ce2e9a7903e

      • memory/1816-1264-0x0000000000120000-0x0000000000121000-memory.dmp

        Filesize

        4KB

      • memory/1920-96-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-92-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-86-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-84-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-88-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-89-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-90-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-91-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-94-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-93-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1920-95-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-97-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-87-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-98-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-121-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-163-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-181-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-205-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-85-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-1077-0x0000000006220000-0x0000000006221000-memory.dmp

        Filesize

        4KB

      • memory/1920-83-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-82-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-81-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-80-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB

      • memory/1920-1269-0x0000000006220000-0x0000000006221000-memory.dmp

        Filesize

        4KB

      • memory/1920-79-0x0000000000420000-0x0000000000520000-memory.dmp

        Filesize

        1024KB