Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    01-03-2024 02:48

General

  • Target

    b022b36862b56d9da2303ffcbb4a67ab.xlsb

  • Size

    342KB

  • MD5

    b022b36862b56d9da2303ffcbb4a67ab

  • SHA1

    e3af13c011041ca7acbe9c72f1307cf83d8fdc1e

  • SHA256

    999c5f5c362b730f9abaf43fe6f8a8e162c0f98ff9523f2e3fc22698ab5acb09

  • SHA512

    e19c5bb29872ae131f4fa1a85d336d71c62075df0edba75b7a9fca87d7e029113e1020663ee025af5520b9fc01cb381fdffe3f0f8bfd1fc7cf5525d7f0268592

  • SSDEEP

    6144:oWD8oGJwuWXO/J6t/VYfASkKTzZYwPMPFde/Qxx2u+OA+NT5AQ:F8v6X7ifASkKTzSwkPFduQx0uD+Q

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 5 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\b022b36862b56d9da2303ffcbb4a67ab.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:3008
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic process call create 'mshta C:\ProgramData\KaViuVRDAQxr.sct'
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of AdjustPrivilegeToken
      PID:2564
  • C:\Windows\system32\mshta.exe
    mshta C:\ProgramData\KaViuVRDAQxr.sct
    1⤵
    • Process spawned unexpected child process
    • Blocklisted process makes network request
    • Modifies Internet Explorer settings
    • Modifies system certificate store
    PID:2556

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\KaViuVRDAQxr.sct

    Filesize

    15KB

    MD5

    9c84993db8519b015d37996f6332854e

    SHA1

    bc56c1e1f613573a22dcd879f918dcf122c6511e

    SHA256

    acc2c8056f1d88db7051b3c636aa8c384d2f8482e6045c95be9826fb4b160041

    SHA512

    e697acc4e0b2f243568e852b6646ccb15ded41f7553c6d19784139d1101f4892f96711e14785d640bee163a5febcb91ee4cad1a64b835bb2f08603fb7716260c

  • 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\Tar2AEE.tmp

    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

  • memory/3008-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/3008-1-0x000000007231D000-0x0000000072328000-memory.dmp

    Filesize

    44KB

  • memory/3008-57-0x000000007231D000-0x0000000072328000-memory.dmp

    Filesize

    44KB

  • memory/3008-60-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/3008-61-0x000000007231D000-0x0000000072328000-memory.dmp

    Filesize

    44KB