Analysis

  • max time kernel
    140s
  • max time network
    136s
  • platform
    windows10_x64
  • resource
    win10-ja-20211014
  • submitted
    18-10-2021 13:35

General

  • Target

    certificate.010.21.doc

  • Size

    76KB

  • MD5

    756882396afaec2d9922977960f68bf5

  • SHA1

    3164c3c6adedab2f6d3e3453ab863c3c0b7828f7

  • SHA256

    1bdf734cf13f9b65bc52c65155f861a70b1d9defad887afc3d45de92a1cabf7f

  • SHA512

    a0498fc8055f0779430a51d30b39faf12ad62886b88a34c9dc9d3926ff8e26ebf76e585775a30833b19360062db4383876e001eec09a17f23a25ceabc21bb785

Malware Config

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • Registers COM server for autorun 1 TTPs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 6 IoCs
  • Modifies registry class 44 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious use of SetWindowsHookEx 11 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\certificate.010.21.doc" /o ""
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4456
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\AppData\Local\Temp\wordRap.....hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
      • Process spawned unexpected child process
      • Checks whether UAC is enabled
      • Modifies Internet Explorer settings
      PID:1004
  • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.180.0905.0007\FileSyncConfig.exe
    "C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.180.0905.0007\FileSyncConfig.exe"
    1⤵
    • Modifies registry class
    PID:3972

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\wordRap.....hta
    MD5

    218f684593db8e0a5bb7c2169fe20972

    SHA1

    0287f60232da1c975f7b408f92504666ab0f6237

    SHA256

    a08fc580d524178a05d18827a36fdb387562dd7da733f65721ee3098dcc3d516

    SHA512

    f88cf9f652a61994856e03aa9a956c217ab822e1a31f1641784a9f608014fdf0755f328f6fef82d1ca15561e2cb1064d553dbb14eba5c56fbb997f421dc69c88

  • memory/1004-254-0x0000000000000000-mapping.dmp
  • memory/4456-115-0x00007FF85BEB0000-0x00007FF85BEC0000-memory.dmp
    Filesize

    64KB

  • memory/4456-116-0x00007FF85BEB0000-0x00007FF85BEC0000-memory.dmp
    Filesize

    64KB

  • memory/4456-117-0x00007FF85BEB0000-0x00007FF85BEC0000-memory.dmp
    Filesize

    64KB

  • memory/4456-118-0x00007FF85BEB0000-0x00007FF85BEC0000-memory.dmp
    Filesize

    64KB

  • memory/4456-119-0x00007FF85BEB0000-0x00007FF85BEC0000-memory.dmp
    Filesize

    64KB

  • memory/4456-120-0x0000020CDF110000-0x0000020CDF112000-memory.dmp
    Filesize

    8KB

  • memory/4456-121-0x0000020CDF110000-0x0000020CDF112000-memory.dmp
    Filesize

    8KB

  • memory/4456-122-0x0000020CDF110000-0x0000020CDF112000-memory.dmp
    Filesize

    8KB