Analysis

  • max time kernel
    27s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    19-04-2024 01:44

General

  • Target

    723910e9a945ddb57024e859856534b1e757e77156b475b099c098932d3a711a.xls

  • Size

    65KB

  • MD5

    dc293b7ab92047bf4bf8323963480360

  • SHA1

    d225a9669bcb6acd9ac97e4175cd19690e398712

  • SHA256

    723910e9a945ddb57024e859856534b1e757e77156b475b099c098932d3a711a

  • SHA512

    cd36d67b5f8ac76cbe9f7c7f17d8de01f93d43ac50f919b82dec3d3b5f2979319a52d0449e981007755cd77464b42fd66ecbf7f64fdb32ba7ec243a724e378b5

  • SSDEEP

    1536:unSGTyFRchUXmdand4NhZFGzElMPAArCAqxHshAp+TuxM+cu/gPnAC:unSGTyFRchUXmdand4NhZFGzElMPAAr5

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.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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 SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 8 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\723910e9a945ddb57024e859856534b1e757e77156b475b099c098932d3a711a.xls
    1⤵
    • Loads dropped DLL
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Windows\SysWOW64\certutil.exe
      certutil -decode C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\W7L9P1M2.txt C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\K9O7I9V9.exe
      2⤵
      • Process spawned unexpected child process
      PID:2572
    • C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\K9O7I9V9.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\K9O7I9V9.exe
      2⤵
      • Executes dropped EXE
      PID:2592

Network

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\W7L9P1M2.txt
    Filesize

    30KB

    MD5

    6b2506098c106875c779cfdf2fd19765

    SHA1

    596e3585a364e6f5b5f808f2d9d59eecfd3cebdf

    SHA256

    8bce620e02f99588b9ebfa0eee850c29936c144fec87199420cde719b5fad70c

    SHA512

    dcb057f5cd41c21cecf7a8cf4700a0c0ce179ed1c1416e6509281977b2da8a3804cf625232c3486b5cd49509189cfbb8877913f415fde154e576f587de2dd094

  • \Users\Admin\AppData\Roaming\Microsoft\AddIns\K9O7I9V9.exe
    Filesize

    22KB

    MD5

    e425c9be18b35075902167172e0722eb

    SHA1

    f1c91d6333c19be31b8fbff24eb3be6467ebb435

    SHA256

    e378781d0393d3f1a8b0a43abfe8c90d9956224109aa87d5832be3da70f19207

    SHA512

    4eff6cfe2e0f77e7690586767f2c23a72c9224af3f3970b9170a446b5c252fea7053ca4235e5eeeed45f5deacd29d974393ccb9dc80fd5d7e3ae601f8ab5b2fa

  • memory/2240-29-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-4-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-30-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-24-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-6-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-7-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-12-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-16-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-13-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-19-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-21-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-18-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-0-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2240-3-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-5-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-36-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-2-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-1-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
    Filesize

    44KB

  • memory/2240-43-0x0000000071FBD000-0x0000000071FC8000-memory.dmp
    Filesize

    44KB

  • memory/2240-44-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-50-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-46-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-47-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2240-48-0x00000000005F0000-0x00000000006F0000-memory.dmp
    Filesize

    1024KB

  • memory/2592-45-0x000000013F4A0000-0x000000013F4AE000-memory.dmp
    Filesize

    56KB

  • memory/2592-51-0x000000013F4A0000-0x000000013F4AE000-memory.dmp
    Filesize

    56KB