Analysis

  • max time kernel
    148s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    22-05-2022 05:17

General

  • Target

    aavwelnn.xlsm

  • Size

    46KB

  • MD5

    9bd3baddbdf78a835956cc1c694489dd

  • SHA1

    3116ae5b338a252985d5bd2c035245fec1b06d45

  • SHA256

    7df06f0d1cb53d8ad793f5f1906a65fa0c80bd1d8719f55aa7f26f9b89c1226e

  • SHA512

    3c8d56af7d933cb4149abd463c7ef009eca2da903992fa8ae8009c943ede57fd9dc95d6d02455b660555fcd7ed223081175623b513d928e9f9301d5c74ce0d4a

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/

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\aavwelnn.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:748
    • C:\Windows\SysWow64\regsvr32.exe
      C:\Windows\SysWow64\regsvr32.exe -s ..\xewn.dll
      2⤵
      • Process spawned unexpected child process
      PID:1100

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

    679KB

    MD5

    0743b2373b4ff3aa7f4351da07bf9ddb

    SHA1

    30f2ac6ae21062bfaed0b8a6f4d47ff2aebc6344

    SHA256

    4dd64997e4a5ebee46fd154015ebc0647642618a869ab3092b87959798e341a2

    SHA512

    e1bb60db7691d4c8c3800d68e09d49502943609dd7b94e2738500df6381e754987112c128baf43106fad20e5b35445fa2856eeabd50e8b88f9291fbc0487c9ae

  • memory/748-54-0x000000002FE01000-0x000000002FE04000-memory.dmp
    Filesize

    12KB

  • memory/748-55-0x0000000071641000-0x0000000071643000-memory.dmp
    Filesize

    8KB

  • memory/748-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/748-57-0x000000007262D000-0x0000000072638000-memory.dmp
    Filesize

    44KB

  • memory/748-58-0x00000000763E1000-0x00000000763E3000-memory.dmp
    Filesize

    8KB

  • memory/1100-59-0x0000000000000000-mapping.dmp