Analysis

  • max time kernel
    115s
  • max time network
    81s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 22:22

General

  • Target

    2022-05-21-b8f3a5f97651057dbc10bb483d8eb117_unzipped.xls

  • Size

    67KB

  • MD5

    b8f3a5f97651057dbc10bb483d8eb117

  • SHA1

    2cec411ff6d32fd71dffc0e72e06d426e16d06e0

  • SHA256

    96031cc46b229cfb0baef38d56208412f45d0ec56a7f370fbe050894237f3009

  • SHA512

    cb953dbaf95fa7a3f6d47fab06db214e46fff67075b99ac7d16a46d674371279434041d64bf945d5c9438fd12b359e5f2293ec17254ced9acdc8c63c61024b83

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://www.clasite.com/blogs/IEEsyn/

xlm40.dropper

https://oncrete-egy.com/wp-content/V6Igzw8/

xlm40.dropper

http://opencart-destek.com/catalog/OqHwQ8xlWa5Goyo/

xlm40.dropper

http://www.pjesacac.com/components/O93XXhMN3tOtTlV/

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\2022-05-21-b8f3a5f97651057dbc10bb483d8eb117_unzipped.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:1672
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\uxevr1.ocx
      2⤵
      • Process spawned unexpected child process
      PID:568
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\uxevr2.ocx
      2⤵
      • Process spawned unexpected child process
      PID:1840
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\uxevr3.ocx
      2⤵
      • Process spawned unexpected child process
      PID:1600
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\uxevr4.ocx
      2⤵
      • Process spawned unexpected child process
      PID:1764

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

  • memory/568-59-0x0000000000000000-mapping.dmp
  • memory/1600-63-0x0000000000000000-mapping.dmp
  • memory/1672-54-0x000000002FB41000-0x000000002FB44000-memory.dmp
    Filesize

    12KB

  • memory/1672-55-0x0000000071521000-0x0000000071523000-memory.dmp
    Filesize

    8KB

  • memory/1672-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1672-57-0x000000007250D000-0x0000000072518000-memory.dmp
    Filesize

    44KB

  • memory/1672-58-0x00000000763C1000-0x00000000763C3000-memory.dmp
    Filesize

    8KB

  • memory/1764-65-0x0000000000000000-mapping.dmp
  • memory/1840-61-0x0000000000000000-mapping.dmp