Analysis

  • max time kernel
    63s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    31-03-2023 06:22

General

  • Target

    1.xls

  • Size

    255KB

  • MD5

    a1a832bedb8e1773a616cfe4ea57667d

  • SHA1

    e6b7d0279681155adbaa6ae520ebdca55591d0a3

  • SHA256

    655d910f284bd28364f826c9001492dc528846a392c10052c4ba1d1e4e436762

  • SHA512

    2a68205052c9b8665ba9668493fcd54f4f4af27a97b1048e3776cf7cc7fedc70231cc23018effb49cd4d298a2be03c0c86bae18e3ce99f1f79cf8a1960a499c8

  • SSDEEP

    6144:bKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgzmnaVGraWWqXqzzyd17O6t0RmUoBQ:aXWWqazOd165RmvQ

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

https://datie-tw.com/img/SvH/

xlm40.dropper

http://central-nutrition.com/wp-content/Nh1L6YR4qlDFWS58cVB/

xlm40.dropper

http://championsfactorysampaios.com.br/xt5HKu/tDs8WsKOxQFq/

xlm40.dropper

https://dacsandongthapmuoi.vn/system/cron/HwOtNCFo/

Signatures

  • Process spawned unexpected child process 4 IoCs

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

  • 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 28 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\1.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1264
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1720
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1388
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:520
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1340

Network

MITRE ATT&CK Matrix ATT&CK v6

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\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
    Filesize

    61KB

    MD5

    e71c8443ae0bc2e282c73faead0a6dd3

    SHA1

    0c110c1b01e68edfacaeae64781a37b1995fa94b

    SHA256

    95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

    SHA512

    b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    342B

    MD5

    28790293dcacff024e71e4c30b6eb14f

    SHA1

    fcbf512958699b82002aee6d15be8fe82336b4c0

    SHA256

    8c5dec213323ad3983fbaab7240780e946d1e4170e16eb179c9bb12c49d1b98d

    SHA512

    67ea56c246c0309d6b63a3fb2e269751a1506e3fbef1265b3c62c88946dd7f5fc22545122b3cf000f81a2a557f499ab70b0066d38385ca5cb4e2201ae9d6e2d0

  • C:\Users\Admin\AppData\Local\Temp\Cab3E5C.tmp
    Filesize

    61KB

    MD5

    fc4666cbca561e864e7fdf883a9e6661

    SHA1

    2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

    SHA256

    10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

    SHA512

    c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

  • C:\Users\Admin\AppData\Local\Temp\Tar4008.tmp
    Filesize

    161KB

    MD5

    be2bec6e8c5653136d3e72fe53c98aa3

    SHA1

    a8182d6db17c14671c3d5766c72e58d87c0810de

    SHA256

    1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

    SHA512

    0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

  • C:\Users\Admin\oxnv2.ooccxx
    Filesize

    888B

    MD5

    998bed8bb5fb5a2207b8d94268d1e0b9

    SHA1

    58f3f1208b7d8d2fd0298dd804ebab5d3d91b40c

    SHA256

    4dd3d615813a715cd47725ce1afc19ba31787b11523081a307288a1aa0ad509c

    SHA512

    2c4626646fc8a48344c6de7c470a4cb5c956690ebcd34aecb5418ab29fe2866075838352b413cab34125d00fa55f5c10d40815e839c31192ca2072cfcb614529

  • C:\Users\Admin\oxnv3.ooccxx
    Filesize

    773B

    MD5

    b30aa7e985bf41477a23491eae987ae6

    SHA1

    0541fa57c2a8debf5c428d8cd6fbe74c81e4794a

    SHA256

    1e3aa4cbfb10fad2b2ad72b0634d574d051b75febda62f664cfa03eacbfdbf9b

    SHA512

    db7b5fdbcb0ea13058912c8574bb4d84ad002e561cddc8b512c801d7b3bed762556ed683b22a06a9ec058148487231f252314b52206aa1468a6e2c85ccd2aec5

  • memory/1264-54-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB