Analysis

  • max time kernel
    148s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    22-05-2022 05:17

General

  • Target

    aducjbbd.xlsm

  • Size

    46KB

  • MD5

    cb4e59e39a6eef5b8752681b6f871e56

  • SHA1

    ebe9658d642bfafc88bf21a48e8eb455066d6926

  • SHA256

    5d31e83b1dda43ba478dbf1bbd5b1ab90021810860493110ac6175f69e58a93d

  • SHA512

    abc66b29e01464d7b867afb49d00d7659438ce13de235eb694d6dd9eda7b7c641024e76a5e43fb43e35b1fa8f6091cd9605df9cd23f91b6c0b706ed1118edea8

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://eles-tech.com/css/KzMysMqFMs/

xlm40.dropper

http://gonorthhalifax.com/wp-content/yTmYyLbTKZV2czsUO/

xlm40.dropper

https://txpcrescue.com/cgi-bin/5tSO8/

Signatures

  • Process spawned unexpected child process 1 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 7 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\aducjbbd.xlsm
    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:1612
    • C:\Windows\SysWow64\regsvr32.exe
      C:\Windows\SysWow64\regsvr32.exe -s ..\xewn.dll
      2⤵
      • Process spawned unexpected child process
      PID:1076

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\xewn.dll
    Filesize

    6KB

    MD5

    2826b1e7af14a75fee51d4e4534eeff5

    SHA1

    c9eab9b2b15cffc0273b3f8d197007b025018838

    SHA256

    8cc3fe518e10bfedd841106b51a5b0fbc337161cfc4d7360db0436ee9d1a68e5

    SHA512

    1c77d4a9ede815b53df07220742e43a180097f066be9a6c3ac22f573910955ddb0047700f9f277bd6c794d8560865ad28cf58de40bb1f939ea4c8cf7f28ba39e

  • memory/1076-59-0x0000000000000000-mapping.dmp
  • memory/1612-54-0x000000002F391000-0x000000002F394000-memory.dmp
    Filesize

    12KB

  • memory/1612-55-0x00000000717A1000-0x00000000717A3000-memory.dmp
    Filesize

    8KB

  • memory/1612-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1612-57-0x000000007278D000-0x0000000072798000-memory.dmp
    Filesize

    44KB

  • memory/1612-58-0x0000000076531000-0x0000000076533000-memory.dmp
    Filesize

    8KB