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Analysis

  • max time kernel
    127s
  • max time network
    145s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    04/11/2022, 03:02

General

  • Target

    a676b61910e1205f39e50700f6162075bc3cd41df4a0d5f26d797469e376551c.xls

  • Size

    217KB

  • MD5

    aac58dfb2c0812806ff01f29d59352e2

  • SHA1

    a1f0158b128119acebda88993527af6d869a93be

  • SHA256

    a676b61910e1205f39e50700f6162075bc3cd41df4a0d5f26d797469e376551c

  • SHA512

    1b488962ce77dc0a53e79aff563727f3ef23cf0ead73cba9e23bf39d0fd445cbb4e1b6257552ef238ff22a8cef436b4edeb069e2220f21402bd39b1676f05529

  • SSDEEP

    6144:zKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgXyY+TAQXTHGUMEyP5p6f5jQma:DbGUMVWlba

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

https://barkstage.es/wp-content/0E7NdYl7TZuHMJq7/

xlm40.dropper

http://contactworks.nl/images_old/NuEAhfF0PCFhvv/

xlm40.dropper

http://www.iam.ch/wp-content/cache/minify/O1OAjWnfen/

xlm40.dropper

https://www.elaboro.pl/wp-admin/J0hwyIMsk9YFIi/

Signatures

  • Process spawned unexpected child process 4 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\a676b61910e1205f39e50700f6162075bc3cd41df4a0d5f26d797469e376551c.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2780
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:4504
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:2264
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:4248
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:4524

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2780-312-0x00007FFD55A00000-0x00007FFD55A10000-memory.dmp

    Filesize

    64KB

  • memory/2780-117-0x00007FFD55A00000-0x00007FFD55A10000-memory.dmp

    Filesize

    64KB

  • memory/2780-118-0x00007FFD55A00000-0x00007FFD55A10000-memory.dmp

    Filesize

    64KB

  • memory/2780-119-0x00007FFD55A00000-0x00007FFD55A10000-memory.dmp

    Filesize

    64KB

  • memory/2780-128-0x00007FFD522E0000-0x00007FFD522F0000-memory.dmp

    Filesize

    64KB

  • memory/2780-129-0x00007FFD522E0000-0x00007FFD522F0000-memory.dmp

    Filesize

    64KB

  • memory/2780-116-0x00007FFD55A00000-0x00007FFD55A10000-memory.dmp

    Filesize

    64KB

  • memory/2780-313-0x00007FFD55A00000-0x00007FFD55A10000-memory.dmp

    Filesize

    64KB

  • memory/2780-310-0x00007FFD55A00000-0x00007FFD55A10000-memory.dmp

    Filesize

    64KB

  • memory/2780-311-0x00007FFD55A00000-0x00007FFD55A10000-memory.dmp

    Filesize

    64KB