Analysis

  • max time kernel
    118s
  • max time network
    136s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    19/01/2022, 03:45

General

  • Target

    a2e85069fc46ebd9d42f5032342656337b40583c3f94f82f653e17dd5bae7f5f.xll

  • Size

    1.7MB

  • MD5

    3ac316aac73c0740b4991a78b88832bf

  • SHA1

    5b9890709fb8c6a3f22868992fed7dbc2dfcc003

  • SHA256

    a2e85069fc46ebd9d42f5032342656337b40583c3f94f82f653e17dd5bae7f5f

  • SHA512

    fba4392e148a1dc6c4214217cddea51f104b1b193a4dd4eca5b904fd5a96bc68bc4988ab02a22ea0d576f081b4154931813c2a957697ed9613bde0afd8690c0a

Malware Config

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

  • Process spawned unexpected child process 1 IoCs

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

  • Bazar/Team9 Loader payload 1 IoCs
  • Loads dropped DLL 3 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 2 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\a2e85069fc46ebd9d42f5032342656337b40583c3f94f82f653e17dd5bae7f5f.xll"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1052
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectJ.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      PID:2452

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1052-115-0x00007FF89DB10000-0x00007FF89DB20000-memory.dmp

    Filesize

    64KB

  • memory/1052-116-0x00007FF89DB10000-0x00007FF89DB20000-memory.dmp

    Filesize

    64KB

  • memory/2452-901-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB