Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    27-09-2021 15:13

General

  • Target

    Compensation-1636332621-09272021.xls

  • Size

    126KB

  • MD5

    16ff3a934cc31ee7e4407caed8b5160b

  • SHA1

    89bca4aae18925b44b7a6424567d15f8a0139c21

  • SHA256

    7b9347900e27559ba3fcfe186a57ee8d28f8c949442a5d12a4bf9f7ed459114d

  • SHA512

    f9dcb21be0c22d6e440e6ebeebfb70ee5229cf8bf2df8199a7b0d5fb57c8bfdbe459f763869108b3b48d2a93b0984115c63809a083349dc68e9ae0207dd3ce23

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://190.14.37.178/44466.6343003472.dat

xlm40.dropper

http://185.183.96.67/44466.6343003472.dat

xlm40.dropper

http://185.250.148.213/44466.6343003472.dat

Signatures

  • Process spawned unexpected child process 3 IoCs

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

  • 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Compensation-1636332621-09272021.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2168
    • C:\Windows\SYSTEM32\regsvr32.exe
      regsvr32 -silent ..\Drezd.red
      2⤵
      • Process spawned unexpected child process
      PID:648
    • C:\Windows\SYSTEM32\regsvr32.exe
      regsvr32 -silent ..\Drezd1.red
      2⤵
      • Process spawned unexpected child process
      PID:3968
    • C:\Windows\SYSTEM32\regsvr32.exe
      regsvr32 -silent ..\Drezd2.red
      2⤵
      • Process spawned unexpected child process
      PID:3940

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/648-278-0x0000000000000000-mapping.dmp
  • memory/2168-115-0x00007FF739880000-0x00007FF73CE36000-memory.dmp
    Filesize

    53.7MB

  • memory/2168-117-0x00007FFB8C970000-0x00007FFB8C980000-memory.dmp
    Filesize

    64KB

  • memory/2168-116-0x00007FFB8C970000-0x00007FFB8C980000-memory.dmp
    Filesize

    64KB

  • memory/2168-118-0x00007FFB8C970000-0x00007FFB8C980000-memory.dmp
    Filesize

    64KB

  • memory/2168-119-0x00007FFB8C970000-0x00007FFB8C980000-memory.dmp
    Filesize

    64KB

  • memory/2168-123-0x00007FFB8C970000-0x00007FFB8C980000-memory.dmp
    Filesize

    64KB

  • memory/2168-122-0x00007FFBAD180000-0x00007FFBAE26E000-memory.dmp
    Filesize

    16.9MB

  • memory/2168-124-0x000002549FAA0000-0x00000254A1995000-memory.dmp
    Filesize

    31.0MB

  • memory/2168-277-0x00000254B44C0000-0x00000254B44C4000-memory.dmp
    Filesize

    16KB

  • memory/3940-280-0x0000000000000000-mapping.dmp
  • memory/3968-279-0x0000000000000000-mapping.dmp