Resubmissions

26-06-2024 05:55

240626-gmmjpsydng 10

26-06-2024 02:10

240626-cl8ckaydld 10

Analysis

  • max time kernel
    125s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-06-2024 02:10

General

  • Target

    eb82946fa0de261e92f8f60aa878c9fef9ebb34fdababa66995403b110118b12.exe

  • Size

    147KB

  • MD5

    448f1796fe8de02194b21c0715e0a5f6

  • SHA1

    935c0b39837319fda571aa800b67d997b79c3198

  • SHA256

    eb82946fa0de261e92f8f60aa878c9fef9ebb34fdababa66995403b110118b12

  • SHA512

    0b93b2c881b1351ff688089abf12bbfcff279c5d6ca8733d6d821c83148d73c85cfedf5ab5bc02c2145970124b518551db3a9fc701d8084f01009ae20f71a831

  • SSDEEP

    3072:l6glyuxE4GsUPnliByocWep0yjEJ3hDRMK89nB2:l6gDBGpvEByocWeebbMjV4

Malware Config

Extracted

Path

C:\sYMY1N6ah.README.txt

Ransom Note
*** Welcome to Brain Cipher Ransomware! *** Dear managers! If you're reading this, it means your systems have been hacked and encrypted and your data stolen. *** The most proper way to safely recover your data is through our support. We can recover your systems within 4-6 hours. In order for it to be successful, you must follow a few points: 1.Don't go to the police, etc. 2.Do not attempt to recover data on your own. 3.Do not take the help of third-party data recovery companies. In most cases, they are scammers who will pay us a ransom and take a for themselves. *** If you violate any 1 of these points, we will refuse to cooperate with you!!! 3 steps to data recovery: 1. Download and install Tor Browser (https://www.torproject.org/download/) 2. Go to our support page: http://mybmtbgd7aprdnw2ekxht5qap5daam2wch25coqerrq2zdioanob34ad.onion 3. Enter your encryption ID: M8AL5cWJEU5CnMMPwCdt4x9NVn0ZY2uNtIgnKwkDJwdPbnanVROYFzGmgUCImexTGDmINYgSZXdlhM7D199lNMb294TGY2 Email to support: [email protected]
URLs

http://mybmtbgd7aprdnw2ekxht5qap5daam2wch25coqerrq2zdioanob34ad.onion

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 2 TTPs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\eb82946fa0de261e92f8f60aa878c9fef9ebb34fdababa66995403b110118b12.exe
    "C:\Users\Admin\AppData\Local\Temp\eb82946fa0de261e92f8f60aa878c9fef9ebb34fdababa66995403b110118b12.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3180
    • C:\ProgramData\4CD.tmp
      "C:\ProgramData\4CD.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:6588
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\4CD.tmp >> NUL
        3⤵
          PID:6772
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4220,i,16488180140590516186,11762960689811837350,262144 --variations-seed-version --mojo-platform-channel-handle=1280 /prefetch:8
      1⤵
        PID:6492

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\$Recycle.Bin\S-1-5-21-1181767204-2009306918-3718769404-1000\AAAAAAAAAAA

        Filesize

        129B

        MD5

        69db9257c4fcff0246aa0f3b3d7056ed

        SHA1

        f516107603b49aab5aee92332598aec63fdb7a4c

        SHA256

        36824438ed928af853d53ab509ef937739d5c1eb94dcb219437b39e42ff91a75

        SHA512

        82180090b08e7e4fab15bc1dd72a86cc49432127aee58aec7e089533b07946df70aab520f5a587b50ea279c47cf26857e278d73800e966f43abd2ea56b290d0d

      • C:\ProgramData\4CD.tmp

        Filesize

        14KB

        MD5

        294e9f64cb1642dd89229fff0592856b

        SHA1

        97b148c27f3da29ba7b18d6aee8a0db9102f47c9

        SHA256

        917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

        SHA512

        b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

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

        Filesize

        147KB

        MD5

        97500ed70c2d2853a143ba179e96d727

        SHA1

        cbf3f5c10ebea46868d2ce145bdc38aee27c4b07

        SHA256

        72553fb224da22c9e8869adebbde5b25afd809a060facd7adeee97237db78ca1

        SHA512

        083f9f815b6400db43b6686bfc0f13f556822c29148655c7b8926307108ffc2e6e70ae974b10306c71efd7927310fb05049208a96ba7d3052fbca5035221aaab

      • C:\sYMY1N6ah.README.txt

        Filesize

        1KB

        MD5

        deb2e0756d331362d57ad9fe408c4ff3

        SHA1

        870865aad7c7cccafbca0c1f50f7eecaedbd4bf1

        SHA256

        1ddacee1d25936970279557169037a335b362f86c3797ded625d68077bd0145c

        SHA512

        e218624d2704517a358df0dfb794116bbeed3ad81daae8c07d5d969e61e7936ed043911008f4816d663de373fd23515219c8038dd22e5838af7df1678a0134a6

      • F:\$RECYCLE.BIN\S-1-5-21-1181767204-2009306918-3718769404-1000\DDDDDDDDDDD

        Filesize

        129B

        MD5

        b04094f86b8439d8774f364776c1db2a

        SHA1

        eff2fb1215ee5c44f941d60a42ffc1286eee9db3

        SHA256

        9e3918b3bd941aa4e4d27087d33cec605190037237d047b165c10d5f0c433617

        SHA512

        e7fa3a3efb279c55717559ca3f5a89b8cc309f3390b0471e7ea329f20a742f18795a34920b5621a1f9dcf0c70478de603c59e22e701e194c798888f1f0e14796

      • memory/3180-1-0x0000000002610000-0x0000000002620000-memory.dmp

        Filesize

        64KB

      • memory/3180-2-0x0000000002610000-0x0000000002620000-memory.dmp

        Filesize

        64KB

      • memory/3180-0-0x0000000002610000-0x0000000002620000-memory.dmp

        Filesize

        64KB

      • memory/6588-3079-0x000000007FE20000-0x000000007FE21000-memory.dmp

        Filesize

        4KB

      • memory/6588-3078-0x0000000002290000-0x00000000022A0000-memory.dmp

        Filesize

        64KB

      • memory/6588-3077-0x0000000002290000-0x00000000022A0000-memory.dmp

        Filesize

        64KB

      • memory/6588-3076-0x000000007FE40000-0x000000007FE41000-memory.dmp

        Filesize

        4KB

      • memory/6588-3080-0x000000007FDC0000-0x000000007FDC1000-memory.dmp

        Filesize

        4KB

      • memory/6588-3110-0x000000007FE00000-0x000000007FE01000-memory.dmp

        Filesize

        4KB

      • memory/6588-3109-0x000000007FDE0000-0x000000007FDE1000-memory.dmp

        Filesize

        4KB