Analysis

  • max time kernel
    150s
  • 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 18:37

General

  • Target

    2023-03-08_1357.doc

  • Size

    535.3MB

  • MD5

    cbf82b8ccffc9bf818b695812626950d

  • SHA1

    5db537eb2730b1c97399781c77256c36d9eba7c0

  • SHA256

    25bde3ebce59179044418d4fe498021ec46acbaf813b51218103b7caf0a2886b

  • SHA512

    26aa55e728859e26a24480d5a9f993ec524e66f2710efa20a0083b56455790e22bb2ec7e75807396842076938a5044e4f27c2641dbb0ca723bca2e02282ffd8f

  • 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 use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 18 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_1357.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:924
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" /s "C:\Users\Admin\AppData\Local\Temp\193903.tmp"
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1928
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Users\Admin\AppData\Local\Temp\193903.tmp"
        3⤵
        • Loads dropped DLL
        PID:868
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1224

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\193903.tmp

      Filesize

      543.7MB

      MD5

      1cd2550e072ec2792339b133005549ed

      SHA1

      c2839a8bc63517bcee9ec16a222690e0f8aa3a74

      SHA256

      af9f8a5c3e4edb4798c25b6fe3e41eeba5d4a41782dbf81a7ba5b3a93652a02a

      SHA512

      e77442d144cad2635a3078a5359b24d9febc164fdfb6424cff5b4d02775ece2df3bdf6575170a9eec9b1d3ce22370efb726c9c611db86fac8d530ce2e9a7903e

    • C:\Users\Admin\AppData\Local\Temp\193906.zip

      Filesize

      867KB

      MD5

      6c839d892fef2f37d973ca28ce5e7a3b

      SHA1

      175ee07dc770ad81455d1f95152f1ae07e875e0e

      SHA256

      b2f19314b692f584203e6711e8d54f32b91a7864adbd203a4eaf6785042d47d9

      SHA512

      18a1ffa1876554a0e7716cbe5d77ce26a373aeb16992986bb8baaece2af502b576d7001a4271ceda09cec6fbbe750c06c8d40d4449ff8b52d01a924a49462af7

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

      Filesize

      20KB

      MD5

      03c7113e7b2333306c22237cbf3cfad3

      SHA1

      6dd4e9d5bc09240702c88b5c7c4398822bbebc8b

      SHA256

      86ee28df0878f0b179292dcfeed163fa33b3fdf8997833318f5f410b0367b20e

      SHA512

      e79fc7d9eeeae1a6417b59e81d0a826fcadbfba71aee13418f9206b11cad8b3b64e8f4a3453f01f227f3950e494e02c846e979cdadd7bd0ea95dd029d074b577

    • \Users\Admin\AppData\Local\Temp\193903.tmp

      Filesize

      543.7MB

      MD5

      1cd2550e072ec2792339b133005549ed

      SHA1

      c2839a8bc63517bcee9ec16a222690e0f8aa3a74

      SHA256

      af9f8a5c3e4edb4798c25b6fe3e41eeba5d4a41782dbf81a7ba5b3a93652a02a

      SHA512

      e77442d144cad2635a3078a5359b24d9febc164fdfb6424cff5b4d02775ece2df3bdf6575170a9eec9b1d3ce22370efb726c9c611db86fac8d530ce2e9a7903e

    • \Users\Admin\AppData\Local\Temp\193903.tmp

      Filesize

      543.7MB

      MD5

      1cd2550e072ec2792339b133005549ed

      SHA1

      c2839a8bc63517bcee9ec16a222690e0f8aa3a74

      SHA256

      af9f8a5c3e4edb4798c25b6fe3e41eeba5d4a41782dbf81a7ba5b3a93652a02a

      SHA512

      e77442d144cad2635a3078a5359b24d9febc164fdfb6424cff5b4d02775ece2df3bdf6575170a9eec9b1d3ce22370efb726c9c611db86fac8d530ce2e9a7903e

    • memory/868-1266-0x00000000001B0000-0x00000000001B1000-memory.dmp

      Filesize

      4KB

    • memory/924-86-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-98-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/924-87-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-88-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-89-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-90-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-91-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-93-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-92-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-94-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-95-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-96-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-85-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-97-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-121-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-163-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-205-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-79-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-1077-0x0000000006020000-0x0000000006021000-memory.dmp

      Filesize

      4KB

    • memory/924-80-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-81-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-82-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-84-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB

    • memory/924-1267-0x0000000006020000-0x0000000006021000-memory.dmp

      Filesize

      4KB

    • memory/924-83-0x0000000000670000-0x0000000000770000-memory.dmp

      Filesize

      1024KB