Analysis

  • max time kernel
    148s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-01-2025 12:52

General

  • Target

    LB3.exe

  • Size

    147KB

  • MD5

    0b6da3700a1bf266d6d2bbf27fd23165

  • SHA1

    f64c2ebf3892e2d498f23b9a7886f67ebbbb2f28

  • SHA256

    4f1c9befcc873120533559c6915aaafd34497eba94d840db4ed28ceba2ebcd49

  • SHA512

    d39d6c9fa03ea2ed2c5aebf9f8811c1b3f3fca2092a8e25d980e8c0ab624d864d841bca9673c7fa843b44204d4f7fbcf1fcfe4fe3678e66a854ddfbf67240cce

  • SSDEEP

    3072:t6glyuxE4GsUPnliByocWep4dd1fL5B594:t6gDBGpvEByocWeAfFn9

Malware Config

Extracted

Path

C:\MWlosDcWa.README.txt

Ransom Note
~~~ RdpLocker Recode the world's fastest ransomware~~~ >>>> Your data are stolen and encrypted >>>> Info Our encryption is undetectable and we can encrypt terabytes of data in minutes. A unique public and private key is generated exclusively for you. No one else can decrypt the files we have encrypted. Our services are cheap and reliable. >>>> What guarantees that we will not deceive you? We are not a politically motivated group and we do not need anything other than your money. If you pay, we will provide you the programs for decryption and we will delete your data. If we do not give you decrypters, or we do not delete your data after payment, then nobody will pay us in the future. Therefore to us our reputation is very important. We attack the companies worldwide and there is no dissatisfied victim after payment. You can contact us using Tox messenger without registration and SMS to negotiate the price. https://tox.chat/download.html Using Tox messenger, we will never know your real name, it means your privacy is guaranteed. RdpLocker Tox ID: CE93C52BFAFA16570B9821C7D0EE7999C78475AD964ACEEF80767B653210D27E3CE6C88F61A5
URLs

https://tox.chat/download.html

Signatures

  • 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 3 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 5 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\LB3.exe
    "C:\Users\Admin\AppData\Local\Temp\LB3.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1900
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:368
    • C:\ProgramData\D32F.tmp
      "C:\ProgramData\D32F.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:3680
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\D32F.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2072
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:1792
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2228
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{579171F8-FC87-40DB-AF66-69F1A87FC5C2}.xps" 133806415361690000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:692

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\$Recycle.Bin\S-1-5-21-2878641211-696417878-3864914810-1000\desktop.ini

      Filesize

      129B

      MD5

      639f304a1499335bfe3dd64d841e4476

      SHA1

      a059e82bcb0012ab95b86432317ec4ca673c3054

      SHA256

      1ee324baf3b598bdde39646bb564b389b18e1f2bba03e1a67d30754a7bcdc370

      SHA512

      6f1ce0cb915d838229a4b5e28f9e15e4e71436c8352b97d458c852cd155422f86f10f104d87d567ef8819ad73b6fc0d9f56b5844a659d53e89a69b2a6d3118bb

    • C:\MWlosDcWa.README.txt

      Filesize

      1KB

      MD5

      0fc102c3422c21c1aadfaa1a656dc970

      SHA1

      49cc540c7a5eaa4f12cacdb21e788335d535ccc0

      SHA256

      fe49a063ebe0b4154321062c1110876bab03710ab367d8a5e3dee6e75fc79029

      SHA512

      8cf822ec2d69b4f4bfdc3303b142ff21315d6e5483a98efa834d039f68a6f57e249d374d3c127a65f524123464532afa5700b4dd4808236b082f7a420a260ab0

    • C:\ProgramData\D32F.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

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

      Filesize

      147KB

      MD5

      e132d48f0bdbaaa0de00c0ec841d872e

      SHA1

      f6020a492ba99742d292db09773c3848f54fd31c

      SHA256

      fce7348e93a78b66683bf11335acbc7fd1d2990b7e9805754c154b82a5314c2c

      SHA512

      0ffd1106df4f3a5a86055ed5fd6cc07224207eab48c4202a33344bbf5a122a80fdd7e5567bdda30a60a9285e7ee3380a817f5ee784b4d5ec66664522d57acf01

    • C:\Users\Admin\AppData\Local\Temp\{45495283-5481-47BB-8B23-4EA51B42EC25}

      Filesize

      4KB

      MD5

      339f73a1783750284907fb627b893e6d

      SHA1

      c3073339340ac8e3da0833f57653f5fa4c77d0bd

      SHA256

      299bd676f89c16b979db8614dde94421eb5d0bd303b99a67e9613c105680495f

      SHA512

      610a59ca1bdc36c1a03f827511ebd1a238e9452b895ba32d3dca70e323f6a11e4575ae89121a29dae2f1f0bdcec4052f06a46262647e8a5d1bb49cc9d4e74365

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

      Filesize

      4KB

      MD5

      979d5a474e068bebaab55700dbb53160

      SHA1

      85f9725caaed248f30a9b94d33c965b04aa7920a

      SHA256

      c04778f92a742326fd324cc6c894d9bc919172c19747d560d70133304a9a7920

      SHA512

      db006bba0cf94a4c17456a36e59642935f5fab54c029b964eb338626ed815f35d7b6f0fe4fad2bf33071058d08675fddb3c501bcda0613f3cf6f1ca3c9640545

    • F:\$RECYCLE.BIN\S-1-5-21-2878641211-696417878-3864914810-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      395b51ee734b4451a19035681cf4ae82

      SHA1

      856b5ef3d0c10672ac01051f37c3f15c7aa5175e

      SHA256

      07dd8350915dd2b080bae327c943389139f0fffb3171f5c4293e74717f1e9aca

      SHA512

      8fa08133a8b07797ffd405193c72ae48aa86f14c52da69a4b545828d930308d88eea8b9c2664be2261fc7e377548055d2325aca5235f0f6eeb66d9e414ce529d

    • memory/692-2869-0x00007FFEE8A90000-0x00007FFEE8AA0000-memory.dmp

      Filesize

      64KB

    • memory/692-2836-0x00007FFEEB1B0000-0x00007FFEEB1C0000-memory.dmp

      Filesize

      64KB

    • memory/692-2838-0x00007FFEEB1B0000-0x00007FFEEB1C0000-memory.dmp

      Filesize

      64KB

    • memory/692-2837-0x00007FFEEB1B0000-0x00007FFEEB1C0000-memory.dmp

      Filesize

      64KB

    • memory/692-2840-0x00007FFEEB1B0000-0x00007FFEEB1C0000-memory.dmp

      Filesize

      64KB

    • memory/692-2839-0x00007FFEEB1B0000-0x00007FFEEB1C0000-memory.dmp

      Filesize

      64KB

    • memory/692-2870-0x00007FFEE8A90000-0x00007FFEE8AA0000-memory.dmp

      Filesize

      64KB

    • memory/1900-2819-0x0000000003430000-0x0000000003440000-memory.dmp

      Filesize

      64KB

    • memory/1900-2-0x0000000003430000-0x0000000003440000-memory.dmp

      Filesize

      64KB

    • memory/1900-1-0x0000000003430000-0x0000000003440000-memory.dmp

      Filesize

      64KB

    • memory/1900-2821-0x0000000003430000-0x0000000003440000-memory.dmp

      Filesize

      64KB

    • memory/1900-2820-0x0000000003430000-0x0000000003440000-memory.dmp

      Filesize

      64KB

    • memory/1900-0-0x0000000003430000-0x0000000003440000-memory.dmp

      Filesize

      64KB