Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 14:41

General

  • Target

    D836C0508AB82A2B60D6DC3EE0AFE53BF9CC31D8F14365A2B183D54E00C28C49.xls

  • Size

    91KB

  • MD5

    74c6ed19c6d7b8b11ca432da8b97250e

  • SHA1

    dc08c8748cc832feed5f4f266748cd69fc47e974

  • SHA256

    d836c0508ab82a2b60d6dc3ee0afe53bf9cc31d8f14365a2b183d54e00c28c49

  • SHA512

    1d7ee0243b0d89f231e5d54a00cc4b92f11b22c7c65c3be8b4481b5c1e571d49f61ed702b091adf8aa190dd22f1f72328ff855238e58e491736e5379dc0c136d

  • SSDEEP

    1536:vKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgHbCXuZH4gb4CEn9J4ZPX5:vKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgl

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

https://datie-tw.com/img/O8G0RDZj7MYCuJyPoP/

xlm40.dropper

http://sbm.xinmoshiwang.com/upload/VaOfWEb3pW76UO/

xlm40.dropper

https://copunupo.ac.zm/cgi-bin/WFFcGx/

xlm40.dropper

http://ly.yjlianyi.top/wp-admin/4cChao/

Extracted

Family

emotet

Botnet

Epoch4

C2

185.4.135.165:8080

159.89.202.34:443

82.223.21.224:8080

187.63.160.88:80

188.44.20.25:443

91.187.140.35:8080

110.232.117.186:8080

197.242.150.244:8080

119.59.103.152:8080

182.162.143.56:443

72.15.201.15:8080

173.255.211.88:443

206.189.28.199:8080

94.23.45.86:4143

45.63.99.23:7080

153.126.146.25:7080

45.118.115.99:8080

115.68.227.76:8080

163.44.196.120:8080

159.65.140.115:443

ecs1.plain
eck1.plain

Signatures

  • Emotet

    Emotet is a trojan that is primarily spread through spam emails.

  • Process spawned unexpected child process 4 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Downloads MZ/PE file
  • Loads dropped DLL 2 IoCs
  • 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 behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 40 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\D836C0508AB82A2B60D6DC3EE0AFE53BF9CC31D8F14365A2B183D54E00C28C49.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1904
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:1216
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:628
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:1972
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1916
      • C:\Windows\system32\regsvr32.exe
        /S ..\elv4.ooocccxxx
        3⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1540
        • C:\Windows\system32\regsvr32.exe
          C:\Windows\system32\regsvr32.exe "C:\Windows\system32\RziKbKBkGiIX\tQhIGdxQBGkU.dll"
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1924

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\elv4.ooocccxxx
    Filesize

    423KB

    MD5

    b88be642ea7e4f9ad82b5d843edf0ec1

    SHA1

    25fd3517b996858e28cb6cee21ea17c528192ed6

    SHA256

    7738d0b8b7c927ca3a92aa49988e2d8bb9bcfa67c09aaa139ae4289f35191708

    SHA512

    8635936e878d2839463e7adb2cd1cbb7b3c0d842d922355d8f281dd4e70a94d5a67222fd8c795a9f1a021ec7a75b78018e5f33b059b5a684bb625930b7a391ec

  • \Users\Admin\elv4.ooocccxxx
    Filesize

    423KB

    MD5

    b88be642ea7e4f9ad82b5d843edf0ec1

    SHA1

    25fd3517b996858e28cb6cee21ea17c528192ed6

    SHA256

    7738d0b8b7c927ca3a92aa49988e2d8bb9bcfa67c09aaa139ae4289f35191708

    SHA512

    8635936e878d2839463e7adb2cd1cbb7b3c0d842d922355d8f281dd4e70a94d5a67222fd8c795a9f1a021ec7a75b78018e5f33b059b5a684bb625930b7a391ec

  • \Users\Admin\elv4.ooocccxxx
    Filesize

    423KB

    MD5

    b88be642ea7e4f9ad82b5d843edf0ec1

    SHA1

    25fd3517b996858e28cb6cee21ea17c528192ed6

    SHA256

    7738d0b8b7c927ca3a92aa49988e2d8bb9bcfa67c09aaa139ae4289f35191708

    SHA512

    8635936e878d2839463e7adb2cd1cbb7b3c0d842d922355d8f281dd4e70a94d5a67222fd8c795a9f1a021ec7a75b78018e5f33b059b5a684bb625930b7a391ec

  • memory/628-62-0x0000000000000000-mapping.dmp
  • memory/1216-60-0x0000000000000000-mapping.dmp
  • memory/1540-73-0x0000000180000000-0x0000000180030000-memory.dmp
    Filesize

    192KB

  • memory/1540-71-0x000007FEFC481000-0x000007FEFC483000-memory.dmp
    Filesize

    8KB

  • memory/1540-70-0x0000000000000000-mapping.dmp
  • memory/1904-58-0x0000000072C8D000-0x0000000072C98000-memory.dmp
    Filesize

    44KB

  • memory/1904-59-0x0000000072C8D000-0x0000000072C98000-memory.dmp
    Filesize

    44KB

  • memory/1904-54-0x000000002F7D1000-0x000000002F7D4000-memory.dmp
    Filesize

    12KB

  • memory/1904-57-0x0000000076DC1000-0x0000000076DC3000-memory.dmp
    Filesize

    8KB

  • memory/1904-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/1904-55-0x0000000071CA1000-0x0000000071CA3000-memory.dmp
    Filesize

    8KB

  • memory/1916-66-0x0000000000000000-mapping.dmp
  • memory/1924-76-0x0000000000000000-mapping.dmp
  • memory/1972-64-0x0000000000000000-mapping.dmp