Analysis

  • max time kernel
    118s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    29-02-2024 23:37

General

  • Target

    afc37fe99822a78b3c2b87e30c559b00.xlsb

  • Size

    111KB

  • MD5

    afc37fe99822a78b3c2b87e30c559b00

  • SHA1

    26bf8bdf3101de21c750f734c16842c8f1c48a2c

  • SHA256

    4989949bd322678be1f9f12b399a7714d9c4df1b0b4c4374c04ed671dc507d7d

  • SHA512

    dee17dc3d073fc0b9e150add7edace2d427012066bb5e3ded58137c754cefc1abbab8dfbb2a3cba37a8d846608490af33ec1af7f553fcb5d7993477c2d9c67fe

  • SSDEEP

    3072:oUqMOWM3XCF/y9ismgi63LD6z2qoaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa3R8:o1WMHxy67MoaaaaaaaaaaaaaaaaaaaaF

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 2 IoCs

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

  • Blocklisted process makes network request 3 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 4 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\afc37fe99822a78b3c2b87e30c559b00.xlsb
    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:2860
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic process call create 'mshta C:\ProgramData\OMpBBfLETXf.sct'
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of AdjustPrivilegeToken
      PID:2520
  • C:\Windows\system32\mshta.exe
    mshta C:\ProgramData\OMpBBfLETXf.sct
    1⤵
    • Process spawned unexpected child process
    • Blocklisted process makes network request
    • Modifies Internet Explorer settings
    • Modifies system certificate store
    PID:2724

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\OMpBBfLETXf.sct

    Filesize

    15KB

    MD5

    2f60f42eedd2ae5f4f4472a8e4292b61

    SHA1

    588f6c018b3e063102d7706d1a2e0d754dc38593

    SHA256

    a683e383521769594792362686692ef05452ddd0ad5b418fa69610f7add18029

    SHA512

    cb3dd463bec7d5ad9896f487dd1fb99b9f4eb8dc41998054f25868f84df58fd7f917ef4556eabfe79d90f4084202a0bc6d44e4eb24a0b887d6fade82b9fa445d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    67KB

    MD5

    753df6889fd7410a2e9fe333da83a429

    SHA1

    3c425f16e8267186061dd48ac1c77c122962456e

    SHA256

    b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78

    SHA512

    9d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444

  • C:\Users\Admin\AppData\Local\Temp\Tar1BE1.tmp

    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

  • memory/2860-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2860-1-0x0000000071EAD000-0x0000000071EB8000-memory.dmp

    Filesize

    44KB

  • memory/2860-57-0x0000000071EAD000-0x0000000071EB8000-memory.dmp

    Filesize

    44KB

  • memory/2860-60-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2860-61-0x0000000071EAD000-0x0000000071EB8000-memory.dmp

    Filesize

    44KB