Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220715-en
  • resource tags

    arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
  • submitted
    31-07-2022 05:13

General

  • Target

    ?i=1txxekkqw.xlsm

  • Size

    50KB

  • MD5

    793c5a832ea9b3c4a225bc96b4449bc2

  • SHA1

    168afc78144b659b18b606a26c3e9a6343dd104a

  • SHA256

    894658b992050ab6d7ee061f083a48264ce56c1b4fbc5ac87c142765405a47f7

  • SHA512

    df041addb6c8113b2add5439f8ce258016233a47a13a3d540187872e4ac25fe3ac87b016bb391a703e0cb73189f1720c0e723b6df47ef971238312ed77a9b607

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://harleyqueretaro.com/renew2019/Back2016-12-22/cv/data/RjuiFMp4Fsp/

xlm40.dropper

http://hoatuoiso1.com/replace/fVea/

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\_i=1txxekkqw.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:1824
    • C:\Windows\SysWow64\regsvr32.exe
      C:\Windows\SysWow64\regsvr32.exe -s ..\rulm.dll
      2⤵
      • Process spawned unexpected child process
      PID:1596

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\rulm.dll

    Filesize

    356KB

    MD5

    66d2d75188cb78984e68be6c888b587c

    SHA1

    94d4d1e7b94b772f3148859258f6257962fc9978

    SHA256

    bbdaba3602fc40a2c38cab8134a2d083fed9981cbcb376c186c7344b52ba801e

    SHA512

    bb362ccd296a5cbdd3e5de12d99ca009567a07a89512f9e601a67f5fcc7c13a92f2a6ba6f531bc27b56b94a911e145d41cd5d5b5c5154d94a62538cdfc0ceb9f

  • memory/1824-54-0x000000002F251000-0x000000002F254000-memory.dmp

    Filesize

    12KB

  • memory/1824-55-0x00000000711F1000-0x00000000711F3000-memory.dmp

    Filesize

    8KB

  • memory/1824-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1824-57-0x00000000721DD000-0x00000000721E8000-memory.dmp

    Filesize

    44KB

  • memory/1824-58-0x0000000075511000-0x0000000075513000-memory.dmp

    Filesize

    8KB

  • memory/1824-59-0x00000000721DD000-0x00000000721E8000-memory.dmp

    Filesize

    44KB