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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/08/2024, 00:23

General

  • Target

    315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe

  • Size

    146KB

  • MD5

    6edfb62405f50d7fb16882ca9b16ed36

  • SHA1

    73c346267e9527ca5886bf8a90b77f9ebceb58fe

  • SHA256

    315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13

  • SHA512

    b3ea04a001c846af5d93435db055986a448fc5d01e86a9292937ce085609b653d41719111d2d031c8b6694eb01d5856e86f9e1a65e8cdc43af51a8ed3d370d2f

  • SSDEEP

    3072:PqJogYkcSNm9V7DGoNK696RTpfnEsCygHQlyT:Pq2kc4m9tDHNK6UlJ9CyN

Malware Config

Signatures

  • Renames multiple (622) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 2 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Drops file in System32 directory 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe
    "C:\Users\Admin\AppData\Local\Temp\315d043b99f988ce9d9f69d7225292eb44623a97c1a029933b62ede699fa9f13.exe"
    1⤵
    • Drops desktop.ini file(s)
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3452
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:2588
    • C:\ProgramData\F8A9.tmp
      "C:\ProgramData\F8A9.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:5072
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\F8A9.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1336
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:2812
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3136
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{EA1048A0-23F8-4D86-B5E5-9DDEDD20ED03}.xps" 133682414406200000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:4744

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-523280732-2327480845-3730041215-1000\CCCCCCCCCCC

      Filesize

      129B

      MD5

      c02219ddc1625ed1678b4bec72f68610

      SHA1

      40f419d61e661abde8d3496ce2f6f279967c7e1d

      SHA256

      be287533884935105a0ffec35d256d197c76ef7bd0d545182a0d184fa080c831

      SHA512

      21889e56d143743e82507f788fbf57159e60924e34cd66aaed0b19974fb71b3979868b8253bfd270a814d2caab6a4788cfd6084b9649fa1268ea354953c3f423

    • C:\ProgramData\F8A9.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

      Filesize

      146KB

      MD5

      0011c75212ab0e112edfd54766cd1850

      SHA1

      7be7ef3d59da695e147259c9136622deb2263074

      SHA256

      057f10d9795e21d67ad675471366d47879275e48f5719372c72455ce4877ed37

      SHA512

      0009e96c1758b5873475237c8133c20aa28df2eaa4bda8122faeb1fe59b60785e1f7bfcd9f5da090bbc9193c6974ac58f718f36cc738cf34dc6f2be15c79ae20

    • C:\Users\Admin\AppData\Local\Temp\{8EA83227-4483-4098-9C20-799CB0FD394D}

      Filesize

      4KB

      MD5

      e59691bc4a942377fb28ae5ddddb20cb

      SHA1

      d23ec9954e3029cefd23646adc36f311c92f83fd

      SHA256

      439df9dd993d0f1dae5642fa4d5cd6e355115d59d27d705410498f887585c5bb

      SHA512

      0415a0448737ea953f78b1a8303a0da782afdf71065ab8504d0c0564b7ddfb7938c495612b097939a7e9549a6ef1748c34431dde835b60b7d354da335bf45988

    • C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2

      Filesize

      4KB

      MD5

      9abe75a855c2cf9fb086eddbc02d82c3

      SHA1

      67e2660ad0aed7bdc2cc6249051356cd42390bb6

      SHA256

      e3cb7e4c5b14c9845306e10f161b477f8c8642b7acce389143bafcc44b642166

      SHA512

      10bd6199e26eb90a747937d6279942ac144264556aefcf59c2badfa2b86a607ca244fca787eea3e2fc6efba993925f0552132d62af41d270ea64c40b5841c064

    • C:\raMFGAusF.README.txt

      Filesize

      597B

      MD5

      8b868d53629149c6b3a461ff64ce8cef

      SHA1

      b8a0b57cfe78c6d8468bdd5ef52411765a456e41

      SHA256

      5f8d2cdb81cac5d0b7df3bae0634042b305b4ac7ad06c728b21df0ea9628da25

      SHA512

      2fbb224b435621bc8947caf5aa4e294725f7df1c79dfaae1674086c8e92fcdb106d734680ac58e02b112613c778b582b2eaa8e6979dc1d75dc1dccab54f7c337

    • F:\$RECYCLE.BIN\S-1-5-21-523280732-2327480845-3730041215-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      92d4bc064b1d6e993e8c44a223e3e09d

      SHA1

      f19abc14b112de16849a04f833975dceeffe84c5

      SHA256

      e16aee6f4f29753652ee135f2c112b1e72917977d026539e956733d84614aa92

      SHA512

      067daf3581eb59f5f0ba2d7cbd85e4ec3e3fc9a804dac8795db91d1b5c37c63e8a3a36b4e6e7344ec45fe8d9b466f66c7e13ff387a8a552533741d7369f130c3

    • memory/3452-0-0x00000000014F0000-0x0000000001500000-memory.dmp

      Filesize

      64KB

    • memory/3452-2960-0x00000000014F0000-0x0000000001500000-memory.dmp

      Filesize

      64KB

    • memory/3452-2959-0x00000000014F0000-0x0000000001500000-memory.dmp

      Filesize

      64KB

    • memory/3452-2961-0x00000000014F0000-0x0000000001500000-memory.dmp

      Filesize

      64KB

    • memory/3452-1-0x00000000014F0000-0x0000000001500000-memory.dmp

      Filesize

      64KB

    • memory/3452-2-0x00000000014F0000-0x0000000001500000-memory.dmp

      Filesize

      64KB

    • memory/4744-2976-0x00007FF8EB150000-0x00007FF8EB160000-memory.dmp

      Filesize

      64KB

    • memory/4744-2979-0x00007FF8EB150000-0x00007FF8EB160000-memory.dmp

      Filesize

      64KB

    • memory/4744-2980-0x00007FF8EB150000-0x00007FF8EB160000-memory.dmp

      Filesize

      64KB

    • memory/4744-2978-0x00007FF8EB150000-0x00007FF8EB160000-memory.dmp

      Filesize

      64KB

    • memory/4744-2977-0x00007FF8EB150000-0x00007FF8EB160000-memory.dmp

      Filesize

      64KB

    • memory/4744-3009-0x00007FF8E8FA0000-0x00007FF8E8FB0000-memory.dmp

      Filesize

      64KB

    • memory/4744-3010-0x00007FF8E8FA0000-0x00007FF8E8FB0000-memory.dmp

      Filesize

      64KB