Resubmissions

26-06-2024 06:01

240626-grc6ts1hpn 10

26-06-2024 05:59

240626-gprw7syepb 10

Analysis

  • max time kernel
    55s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    26-06-2024 05:59

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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).

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\eb82946fa0de261e92f8f60aa878c9fef9ebb34fdababa66995403b110118b12.exe
    "C:\Users\Admin\AppData\Local\Temp\eb82946fa0de261e92f8f60aa878c9fef9ebb34fdababa66995403b110118b12.exe"
    1⤵
    • Loads dropped DLL
    • Drops desktop.ini file(s)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2820
    • C:\ProgramData\3801.tmp
      "C:\ProgramData\3801.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:1976
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\3801.tmp >> NUL
        3⤵
          PID:1528
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      1⤵
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2280
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fefc5f9758,0x7fefc5f9768,0x7fefc5f9778
        2⤵
          PID:1104
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1148 --field-trial-handle=1340,i,9443410706881528016,16148289631025795446,131072 /prefetch:2
          2⤵
            PID:1916
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1532 --field-trial-handle=1340,i,9443410706881528016,16148289631025795446,131072 /prefetch:8
            2⤵
              PID:1144
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1620 --field-trial-handle=1340,i,9443410706881528016,16148289631025795446,131072 /prefetch:8
              2⤵
                PID:1612
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=1404 --field-trial-handle=1340,i,9443410706881528016,16148289631025795446,131072 /prefetch:1
                2⤵
                  PID:2012
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=1768 --field-trial-handle=1340,i,9443410706881528016,16148289631025795446,131072 /prefetch:1
                  2⤵
                    PID:920
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1472 --field-trial-handle=1340,i,9443410706881528016,16148289631025795446,131072 /prefetch:2
                    2⤵
                      PID:2680
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=1432 --field-trial-handle=1340,i,9443410706881528016,16148289631025795446,131072 /prefetch:1
                      2⤵
                        PID:2552
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3440 --field-trial-handle=1340,i,9443410706881528016,16148289631025795446,131072 /prefetch:8
                        2⤵
                          PID:2708
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3556 --field-trial-handle=1340,i,9443410706881528016,16148289631025795446,131072 /prefetch:8
                          2⤵
                            PID:2780
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2688 --field-trial-handle=1340,i,9443410706881528016,16148289631025795446,131072 /prefetch:8
                            2⤵
                              PID:1296
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2236 --field-trial-handle=1340,i,9443410706881528016,16148289631025795446,131072 /prefetch:8
                              2⤵
                                PID:2144
                            • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                              "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                              1⤵
                                PID:1196
                              • C:\Windows\explorer.exe
                                "C:\Windows\explorer.exe"
                                1⤵
                                  PID:2208
                                • C:\Windows\system32\AUDIODG.EXE
                                  C:\Windows\system32\AUDIODG.EXE 0x148
                                  1⤵
                                    PID:2416

                                  Network

                                  MITRE ATT&CK Enterprise v15

                                  Replay Monitor

                                  Loading Replay Monitor...

                                  Downloads

                                  • C:\$Recycle.Bin\S-1-5-21-1298544033-3225604241-2703760938-1000\desktop.ini

                                    Filesize

                                    129B

                                    MD5

                                    52f84cfb0702fd3635da8329edde44b7

                                    SHA1

                                    72c2b7670e49610a473e040e374db364bb25e74c

                                    SHA256

                                    ef6549d57e08490681fee63202627189f6d83695feed2e1aa1064bce46357635

                                    SHA512

                                    0040370c4cb6978c24d942e9bee955c7aeb6f989c885d3837c9eee9d63ae8c76d505410ffc88e5284c7d2ade5c7ca9c55531665f6a2977086b37c1d122e254c4

                                  • C:\ProgramData\3801.tmp

                                    Filesize

                                    14KB

                                    MD5

                                    294e9f64cb1642dd89229fff0592856b

                                    SHA1

                                    97b148c27f3da29ba7b18d6aee8a0db9102f47c9

                                    SHA256

                                    917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

                                    SHA512

                                    b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\BrowserMetrics\p42qCfV.sYMY1N6ah

                                    Filesize

                                    4.0MB

                                    MD5

                                    ee465985025bc869d93435ae6b437375

                                    SHA1

                                    199d21f949e6118a143e44e6c24c1556e97b5a59

                                    SHA256

                                    f7259e886b0e6402c0ca6fc8fe12485be6258bd3a131c47e82ed5153ecc65d0b

                                    SHA512

                                    235a6799fccc2bda8075247abc98ddce83c9ae7266611a6f124c67b45779a2072491b622ea1eab44fd0a009460a8211dc9c88fbcb6eb4d4deb52418728a071c8

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\DawnCache\data_1

                                    Filesize

                                    264KB

                                    MD5

                                    f50f89a0a91564d0b8a211f8921aa7de

                                    SHA1

                                    112403a17dd69d5b9018b8cede023cb3b54eab7d

                                    SHA256

                                    b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                    SHA512

                                    bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                    Filesize

                                    5KB

                                    MD5

                                    8447cf2116eb990799a6b4d3403b8e86

                                    SHA1

                                    e901436c0f96b495b69cd881d83757d458cdc4da

                                    SHA256

                                    c43ab7aca60bbf1e4eedccbc8ce0e26facde9b91b74367a60c56604140611fe7

                                    SHA512

                                    9802928f7d55c2a6e79ec53bd70c8b007d94874873d6451dd416171133fc5c518075d2dc19109b5c50e064490eb3684c669fb024a3acbed0d78ba42c8607736d

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                    Filesize

                                    5KB

                                    MD5

                                    36ccc5ff7ceddc7f7ff844087146c25c

                                    SHA1

                                    fd5ae74f488f8d822aa0f0111c9dcc808cc5212f

                                    SHA256

                                    4eb05b853fe24cd945f797e32e047617ab0fbb5af53d25d5f41368bb5d416fc5

                                    SHA512

                                    cba3591e7730c40699d26cf8131262b0605f05dbbf9f16fe631cdf104558aa4a71342af7a1c2afda50b8b58c5cec7cfa58e0b889133dda86286856cca118ac5e

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp

                                    Filesize

                                    16B

                                    MD5

                                    18e723571b00fb1694a3bad6c78e4054

                                    SHA1

                                    afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                                    SHA256

                                    8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                                    SHA512

                                    43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

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

                                    Filesize

                                    147KB

                                    MD5

                                    f1e95603c41e9a5edcd7acafe2e09179

                                    SHA1

                                    131db8baf239362ded09c66c04f7371f272effc8

                                    SHA256

                                    cfc3b3952e5f37c231809f4a434dbda6c1253789c0252a1e0ae459d62df299df

                                    SHA512

                                    045ca8ee4059f53ca543a9b6fca331ece350c862250cd73c76c9b4c3a49262bd52802ad9cb90720afd7643d5945163aa9c62f05fbadabfc11e72f248b3cc98a2

                                  • C:\sYMY1N6ah.README.txt

                                    Filesize

                                    1KB

                                    MD5

                                    deb2e0756d331362d57ad9fe408c4ff3

                                    SHA1

                                    870865aad7c7cccafbca0c1f50f7eecaedbd4bf1

                                    SHA256

                                    1ddacee1d25936970279557169037a335b362f86c3797ded625d68077bd0145c

                                    SHA512

                                    e218624d2704517a358df0dfb794116bbeed3ad81daae8c07d5d969e61e7936ed043911008f4816d663de373fd23515219c8038dd22e5838af7df1678a0134a6

                                  • F:\$RECYCLE.BIN\S-1-5-21-1298544033-3225604241-2703760938-1000\DDDDDDDDDDD

                                    Filesize

                                    129B

                                    MD5

                                    093d6851eacbda47780722cb1e32a4c4

                                    SHA1

                                    dd1dec57b0465908aa20440db3e974b32f71b1e4

                                    SHA256

                                    42b456a1f689326851d843f1f30ee49ea3144354b1fdbaa96294455ac21726ec

                                    SHA512

                                    ca536e518b83f13f898ec6d4415a300ed0ac7ef9d02e88051529627193e4df62a624df1506962436577dab2afc90141dfb22ec6b919e64844cc7afd70d4cdd38

                                  • \??\pipe\crashpad_2280_HJCTLJQRTJZVRIUE

                                    MD5

                                    d41d8cd98f00b204e9800998ecf8427e

                                    SHA1

                                    da39a3ee5e6b4b0d3255bfef95601890afd80709

                                    SHA256

                                    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                    SHA512

                                    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                  • memory/1976-860-0x0000000000401000-0x0000000000404000-memory.dmp

                                    Filesize

                                    12KB

                                  • memory/1976-861-0x0000000000400000-0x0000000000407000-memory.dmp

                                    Filesize

                                    28KB

                                  • memory/2820-0-0x0000000000380000-0x00000000003C0000-memory.dmp

                                    Filesize

                                    256KB