Resubmissions

14-10-2021 15:17

211014-spccasafhl 10

14-10-2021 15:09

211014-sjvaxshhh2 8

Analysis

  • max time kernel
    104s
  • max time network
    26s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    14-10-2021 15:17

General

  • Target

    Bill_PYWTF0.xlsb

  • Size

    264KB

  • MD5

    29be144375ee1609c2c1fd63ae2ff514

  • SHA1

    f37a8d5da9424bd916ed1c572b15173b5f430dd2

  • SHA256

    1296ca015baa3dfae62d8cd6f6c1c1513fb919201a6c11f3df1474700d57fb26

  • SHA512

    7873fffbc179dc3e8b415b72c2c3b736c7f4164e1a8a33c6d38cae5902466059f2fe50adf9ff0f2bba8411d373ceca02a950df9fd263624ab03014cf9879d752

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 2 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 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 4 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\Bill_PYWTF0.xlsb
    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:1268
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic process call create 'mshta C:\ProgramData\bBWcALuQkHhzqq.rtf'
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of AdjustPrivilegeToken
      PID:1512
  • C:\Windows\system32\mshta.exe
    mshta C:\ProgramData\bBWcALuQkHhzqq.rtf
    1⤵
    • Process spawned unexpected child process
    • Modifies Internet Explorer settings
    PID:884

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:\ProgramData\bBWcALuQkHhzqq.rtf
    MD5

    8cd8e6098e25876466df2c174aa27a36

    SHA1

    c9a4cc1f8c2b898b75f2581d72d9b8d05c335baf

    SHA256

    a01e6ca4a97e6a9e8b1ad4105ea314fd6b99033b9234a16daf0fe89a8cc33218

    SHA512

    dd22ff7df782568f1b8ca6b287f29e3741bbd812408ad6f61b87bae50e92ab10f67db6593e3ddc516cac4c50937dfaceee40cd53b4a0a079290543461bf36565

  • memory/884-59-0x000007FEFB891000-0x000007FEFB893000-memory.dmp
    Filesize

    8KB

  • memory/1268-54-0x000000002F441000-0x000000002F444000-memory.dmp
    Filesize

    12KB

  • memory/1268-55-0x0000000071081000-0x0000000071083000-memory.dmp
    Filesize

    8KB

  • memory/1268-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1268-58-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1512-57-0x0000000000000000-mapping.dmp