Resubmissions

26-12-2022 18:04

221226-wnp4jsge5y 10

26-12-2022 04:40

221226-faywjaff31 10

Analysis

  • max time kernel
    70s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26-12-2022 18:04

General

  • Target

    23b972352d2f4bf01185c1bf5b40679b0ed16fcc09820824885c09de9c2f5a42.docm

  • Size

    1.3MB

  • MD5

    779fce8225885de9744b8578bd046bcc

  • SHA1

    172c8190afe0bc34b8c9b779d680d212b2d3ea1e

  • SHA256

    23b972352d2f4bf01185c1bf5b40679b0ed16fcc09820824885c09de9c2f5a42

  • SHA512

    299b0a7b9eab09601b7e288e7896eae084aac5184c7acb39012ed76a5b2cf56e64794999a3d57139acf14ba273b63501784dfa8bc08568a0571294c59d4a1f9e

  • SSDEEP

    24576:/9aopJmLOgHWi8bj11H2w5inpF7sONo/qiy7L9pvRDjG7EzqHm+Bmcq:/LpJmgf3zliFpp4KqG+K

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 4 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 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\23b972352d2f4bf01185c1bf5b40679b0ed16fcc09820824885c09de9c2f5a42.docm"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:832
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1984
    • C:\Windows\system32\rundll32.exe
      rundll32 C:\ProgramData\KBFR2.DLL,init
      1⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      PID:1612

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\KBFR2.DLL

      Filesize

      740KB

      MD5

      404584ebbd5392ae611636e83c80df07

      SHA1

      4215876dbb1d8b9d617e35a305ac1d9c03c3c138

      SHA256

      d5ebe22fde4037d1f40402ca98b6d33f34a66a5d01fc8b52ceb50c36329f6215

      SHA512

      7358450edb7df324d7a96709308f7ba81b347ed67adcd9806434e0d46b920ff8b10bf0511ff49ebd752b16ab038f6b67f67c252bdc4a5a551cc40ee9c8c61d1c

    • \ProgramData\KBFR2.DLL

      Filesize

      740KB

      MD5

      404584ebbd5392ae611636e83c80df07

      SHA1

      4215876dbb1d8b9d617e35a305ac1d9c03c3c138

      SHA256

      d5ebe22fde4037d1f40402ca98b6d33f34a66a5d01fc8b52ceb50c36329f6215

      SHA512

      7358450edb7df324d7a96709308f7ba81b347ed67adcd9806434e0d46b920ff8b10bf0511ff49ebd752b16ab038f6b67f67c252bdc4a5a551cc40ee9c8c61d1c

    • \ProgramData\KBFR2.DLL

      Filesize

      740KB

      MD5

      404584ebbd5392ae611636e83c80df07

      SHA1

      4215876dbb1d8b9d617e35a305ac1d9c03c3c138

      SHA256

      d5ebe22fde4037d1f40402ca98b6d33f34a66a5d01fc8b52ceb50c36329f6215

      SHA512

      7358450edb7df324d7a96709308f7ba81b347ed67adcd9806434e0d46b920ff8b10bf0511ff49ebd752b16ab038f6b67f67c252bdc4a5a551cc40ee9c8c61d1c

    • \ProgramData\KBFR2.DLL

      Filesize

      740KB

      MD5

      404584ebbd5392ae611636e83c80df07

      SHA1

      4215876dbb1d8b9d617e35a305ac1d9c03c3c138

      SHA256

      d5ebe22fde4037d1f40402ca98b6d33f34a66a5d01fc8b52ceb50c36329f6215

      SHA512

      7358450edb7df324d7a96709308f7ba81b347ed67adcd9806434e0d46b920ff8b10bf0511ff49ebd752b16ab038f6b67f67c252bdc4a5a551cc40ee9c8c61d1c

    • \ProgramData\KBFR2.DLL

      Filesize

      740KB

      MD5

      404584ebbd5392ae611636e83c80df07

      SHA1

      4215876dbb1d8b9d617e35a305ac1d9c03c3c138

      SHA256

      d5ebe22fde4037d1f40402ca98b6d33f34a66a5d01fc8b52ceb50c36329f6215

      SHA512

      7358450edb7df324d7a96709308f7ba81b347ed67adcd9806434e0d46b920ff8b10bf0511ff49ebd752b16ab038f6b67f67c252bdc4a5a551cc40ee9c8c61d1c

    • memory/832-85-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-68-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/832-57-0x0000000075091000-0x0000000075093000-memory.dmp

      Filesize

      8KB

    • memory/832-58-0x0000000070CAD000-0x0000000070CB8000-memory.dmp

      Filesize

      44KB

    • memory/832-59-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-60-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-86-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-62-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-64-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-63-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-65-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-66-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-88-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-67-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-69-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-71-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-87-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-72-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-73-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-75-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-74-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-76-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-77-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-78-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-79-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-80-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-81-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-83-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-82-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-84-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-54-0x0000000072241000-0x0000000072244000-memory.dmp

      Filesize

      12KB

    • memory/832-61-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-55-0x000000006FCC1000-0x000000006FCC3000-memory.dmp

      Filesize

      8KB

    • memory/832-70-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-89-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-90-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-91-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-92-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-93-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-94-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-96-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-95-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-97-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-99-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-98-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-101-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-100-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-102-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-103-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-105-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-104-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-106-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-107-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-109-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-108-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-110-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-111-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-112-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-114-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-113-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-115-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-116-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-118-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-117-0x00000000006DB000-0x00000000006DF000-memory.dmp

      Filesize

      16KB

    • memory/832-199-0x0000000070CAD000-0x0000000070CB8000-memory.dmp

      Filesize

      44KB

    • memory/1984-197-0x0000000000000000-mapping.dmp