Analysis

  • max time kernel
    152s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    22-10-2021 17:42

General

  • Target

    TXN.xls

  • Size

    138KB

  • MD5

    c45ef81e3c2f06ee9e6eec6615c8af22

  • SHA1

    71ee9c48825816f1664cb923f606b4cc0a1f8cc2

  • SHA256

    7841313327d7e973e4edfb59245d7a403a5d7f59174f83f37fb139d537bdbf17

  • SHA512

    c50673b5dc2c1651aaac48ceb803ef99816195a0c1256b57a33bcb8338ac102d85cd32171331a8dd0304d52a3d86479a335906ec604dc27b37c7caa094e11af2

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://190.14.37.226/44491.8190982639.dat

xlm40.dropper

http://5.149.248.24/44491.8190982639.dat

xlm40.dropper

http://176.31.87.211/44491.8190982639.dat

Signatures

  • Process spawned unexpected child process 3 IoCs

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

  • 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 21 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\TXN.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:2040
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 -silent ..\Celod.wac
      2⤵
      • Process spawned unexpected child process
      PID:1104
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 -silent ..\Celod.wac1
      2⤵
      • Process spawned unexpected child process
      PID:1984
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 -silent ..\Celod.wac2
      2⤵
      • Process spawned unexpected child process
      PID:1708

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/1104-59-0x0000000000000000-mapping.dmp
  • memory/1104-60-0x0000000075D41000-0x0000000075D43000-memory.dmp
    Filesize

    8KB

  • memory/1708-63-0x0000000000000000-mapping.dmp
  • memory/1984-61-0x0000000000000000-mapping.dmp
  • memory/2040-55-0x000000002F4C1000-0x000000002F4C4000-memory.dmp
    Filesize

    12KB

  • memory/2040-56-0x0000000071BB1000-0x0000000071BB3000-memory.dmp
    Filesize

    8KB

  • memory/2040-57-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2040-58-0x0000000006170000-0x0000000006172000-memory.dmp
    Filesize

    8KB