Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    30-09-2021 11:16

General

  • Target

    Compensation-1027110219.xls

  • Size

    233KB

  • MD5

    76c5b3c16a42fd876d3c8648063ebefd

  • SHA1

    17eb233138408ec24ee1d300c7fdec089d534766

  • SHA256

    c0a3994bb5140514f73ecfb49ba1f8a74c2cf3c31dde10c79fa5b8f615ce16b4

  • SHA512

    e50ac5cff53c6d014b73db0a1de64fd3904fb9b55b65c0278d284fda0b9fa4d6b0a5038f6cfc3618b13103d64dbbcb81ca40b5a27621a00090f6d53a03f0eedc

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

https://safalerp.com/J1wlINw7HtJ/siera.xml

xlm40.dropper

https://godschildrenaf.org/qxwbRMzrqoWK/siera.xml

xlm40.dropper

https://callgirlsandescortkenya.site/hllzvTuU/siera.xml

Signatures

  • Process spawned unexpected child process 3 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 6 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\Compensation-1027110219.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:1760
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" C:\Datop\test.test
      2⤵
      • Process spawned unexpected child process
      PID:472
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" C:\Datop\test1.test
      2⤵
      • Process spawned unexpected child process
      PID:568
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\System32\regsvr32.exe" C:\Datop\test2.test
      2⤵
      • Process spawned unexpected child process
      PID:1648

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/472-57-0x0000000000000000-mapping.dmp
  • memory/472-63-0x0000000000270000-0x0000000000271000-memory.dmp
    Filesize

    4KB

  • memory/568-58-0x0000000000000000-mapping.dmp
  • memory/568-60-0x00000000767F1000-0x00000000767F3000-memory.dmp
    Filesize

    8KB

  • memory/568-64-0x0000000000460000-0x0000000000461000-memory.dmp
    Filesize

    4KB

  • memory/1648-59-0x0000000000000000-mapping.dmp
  • memory/1648-65-0x0000000000200000-0x0000000000201000-memory.dmp
    Filesize

    4KB

  • memory/1760-54-0x000000002FA11000-0x000000002FA14000-memory.dmp
    Filesize

    12KB

  • memory/1760-55-0x0000000071AB1000-0x0000000071AB3000-memory.dmp
    Filesize

    8KB

  • memory/1760-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB