Overview

overview

10

Static

static

10

f4e2bab6cb...39.exe

windows7-x64

10

f4e2bab6cb...39.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    03-02-2024 17:14

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General

  • Target

    f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839.exe

  • Size

    42KB

  • MD5

    5884482db6adca2b8476c395c66805e7

  • SHA1

    4c5b8b834d7d9e8b1316a1b8d2e7b9024022d4ce

  • SHA256

    f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839

  • SHA512

    4e1007fb311c474217b8dfb810d04c2b188deadf56dcd81ee532a48abeb5fc29ff0eae7628cda5aa78f690f46c2370dfb3379e270ee03e83025f7a872f99e52d

  • SSDEEP

    768:AO1oR/RVS1RzK4wbs+D/SIJX+ZZ1SQQwZuIOPzDsUky5DuGMKKz0YnW:AXS1FKnDtkuImNNxFKU

Score
10/10
ransomwarespywarestealer

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\+README-WARNING+.txt

Ransom Note
::: Greetings ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted. The file structure was not damaged, we did everything possible so that this could not happen. .2. Q: How to recover files? A: If you wish to decrypt your files you will need to pay us. .3. Q: What about guarantees? A: Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will cooperate with us. Its not in our interests. To check the ability of returning files, you can send to us any 2 files with SIMPLE extensions(jpg,xls,doc, etc... not databases!) and low sizes(max 1 mb), we will decrypt them and send back to you. That is our guarantee. .4. Q: How to contact with you? A: You can write us to our mailbox: [email protected] .5. Q: How will the decryption process proceed after payment? A: After payment we will send to you our scanner-decoder program and detailed instructions for use. With this program you will be able to decrypt all your encrypted files. .6. Q: If I don�t want to pay bad people like you? A: If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause only we have the private key. In practice - time is much more valuable than money. :::BEWARE::: DON'T try to change encrypted files by yourself! If you will try to use any third party software for restoring your data or antivirus solutions - please make a backup for all encrypted files! Any changes in encrypted files may entail damage of the private key and, as result, the loss all data.

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Renames multiple (8231) files with added filename extension

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

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies system certificate store 2 TTPs 6 IoCs
    evasionspywaretrojan
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839.exe
    "C:\Users\Admin\AppData\Local\Temp\f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839.exe"
    1⤵
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1920
    • C:\Users\Admin\AppData\Local\Temp\f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839.exe
      "C:\Users\Admin\AppData\Local\Temp\f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839.exe" n1920
      2⤵
        PID:3060
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2124
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2188
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:2508
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2096
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ping 1.1.1.1 -n 5 & fsutil file setZeroData offset=0 length=131072 "C:\Users\Admin\AppData\Local\Temp\f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839.exe" & del /q /f "C:\Users\Admin\AppData\Local\Temp\f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839.exe"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:2164
        • C:\Windows\SysWOW64\PING.EXE
          ping 1.1.1.1 -n 5
          3⤵
          • Runs ping.exe
          PID:2344
        • C:\Windows\SysWOW64\fsutil.exe
          fsutil file setZeroData offset=0 length=131072 "C:\Users\Admin\AppData\Local\Temp\f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839.exe"
          3⤵
            PID:212
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3000
      • C:\Windows\system32\wbengine.exe
        "C:\Windows\system32\wbengine.exe"
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2592
      • C:\Windows\System32\vdsldr.exe
        C:\Windows\System32\vdsldr.exe -Embedding
        1⤵
          PID:2500
        • C:\Windows\System32\vds.exe
          C:\Windows\System32\vds.exe
          1⤵
            PID:1176
          • C:\Windows\system32\Dwm.exe
            "C:\Windows\system32\Dwm.exe"
            1⤵
              PID:1856

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\+README-WARNING+.txt
              Filesize

              1KB

              MD5

              4de65197a981d8943c1a44b787db0def

              SHA1

              0246cd0d5b68d5b34eba4fffb0b4d11d7291274d

              SHA256

              6acf156e93cba46ea8921edeed6506bf28d0ef701a92a3e06f4ef29f171d3678

              SHA512

              a589f791420dc30e0c41bc151545b815190f5398cbdc98307f9b1de464cbd1b4622dffddcf7d81fc837ccedf2e804c1d3815c2867b33706284df34a5e0a5c5ce

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

              65KB

              MD5

              ac05d27423a85adc1622c714f2cb6184

              SHA1

              b0fe2b1abddb97837ea0195be70ab2ff14d43198

              SHA256

              c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

              SHA512

              6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

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            • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\F0ACCF77CDCBFF39F6191887F6D2D357
              Filesize

              1KB

              MD5

              a266bb7dcc38a562631361bbf61dd11b

              SHA1

              3b1efd3a66ea28b16697394703a72ca340a05bd5

              SHA256

              df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

              SHA512

              0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

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

              344B

              MD5

              ce72ca1033e4e14f353b15ec2b4b3640

              SHA1

              997af0fc1ef539af41ebae5b309b2211861a62e6

              SHA256

              fabee3925582abb5bd9de4453535c2d3991a20e9f846fe4e5c8b36e04f6ce506

              SHA512

              7c7cd0446856876b8835b3e0e61f9ad38010f2bd307ab18e684ef40ac5998457ce852a601836f0607e1d9f2f28af88ad869980b6d294a0802c68a1791b7167eb

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            • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357
              Filesize

              242B

              MD5

              6b5f4d9d39754113741069153d78f6db

              SHA1

              76fc0cc4a2417fd203691e6e9e4ad4d9d6dcdc48

              SHA256

              a74e823b05ae32aed34ad0ff87ab0cbf7367052e8a9665bbe0178d39c25b4ccd

              SHA512

              4db61d9a86dbe24112c07e73b420dbbd1c0f2ae04f170c3e25351aa0bef3f6a2dd082f232da978e1c32537491908e028aba7af802069cefd199f142c420e6c3e

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            • C:\Users\Admin\AppData\Local\Temp\Tar1FA6.tmp
              Filesize

              171KB

              MD5

              9c0c641c06238516f27941aa1166d427

              SHA1

              64cd549fb8cf014fcd9312aa7a5b023847b6c977

              SHA256

              4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

              SHA512

              936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

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