Analysis

  • max time kernel
    300s
  • max time network
    303s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-11-2022 04:21

General

  • Target

    sqatyavkpcidpvwiialfnbdpawluusrm.exe

  • Size

    63KB

  • MD5

    dae21c538a7a4f8294d7e19916be9100

  • SHA1

    cea1c44030c6f45243a9408e59f8e43304402438

  • SHA256

    3184a8183ddd00795ae4da31244c3bdf010ab97addc4df2b66129982c9ede4e4

  • SHA512

    8e9dd2b4e4ec9b28cb7c40e41f6ba8607e1c16351398d5de84965ee0a596fe255b8bfafb61eee99c83281d7cb43b029695ce68db3b7c942acfe392d63f7d4e26

  • SSDEEP

    1536:6hQDnx1Ak32YGbHZCyYaN1bbLwtY3L3VG/tpqKmY7:6hQDnx1Ak32HHZCyP1bbLxL322z

Malware Config

Extracted

Family

asyncrat

Version

1.0.7 - modded by last

Botnet

New

C2

nicehash.at:4343

Mutex

adsasutex_qwqdanchun

Attributes
  • delay

    1

  • install

    true

  • install_file

    GoogleDriver.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

bitrat

Version

1.38

C2

nicehash.at:6000

Attributes
  • communication_password

    005f16f264f006578c55237781f36898

  • install_dir

    JavaHelper

  • install_file

    Java.exe

  • tor_process

    tor

Extracted

Family

redline

Botnet

cheat

C2

nicehash.at:1338

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • BitRAT

    BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine payload 3 IoCs
  • XenArmor Suite

    XenArmor is as suite of password recovery tools for various application.

  • ACProtect 1.3x - 1.4x DLL software 2 IoCs

    Detects file using ACProtect software.

  • Async RAT payload 3 IoCs
  • Executes dropped EXE 5 IoCs
  • UPX packed file 11 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 35 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\sqatyavkpcidpvwiialfnbdpawluusrm.exe
    "C:\Users\Admin\AppData\Local\Temp\sqatyavkpcidpvwiialfnbdpawluusrm.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4712
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "GoogleDriver" /tr '"C:\Users\Admin\AppData\Roaming\GoogleDriver.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2120
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "GoogleDriver" /tr '"C:\Users\Admin\AppData\Roaming\GoogleDriver.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:4888
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBBE2.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1064
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4924
      • C:\Users\Admin\AppData\Roaming\GoogleDriver.exe
        "C:\Users\Admin\AppData\Roaming\GoogleDriver.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4832
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\bit.exe"' & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:448
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\bit.exe"'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3712
            • C:\Users\Admin\AppData\Local\Temp\bit.exe
              "C:\Users\Admin\AppData\Local\Temp\bit.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of NtSetInformationThreadHideFromDebugger
              • Suspicious use of SetThreadContext
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:404
              • C:\Users\Admin\AppData\Local\JavaHelper\Java.exe
                -a "C:\Users\Admin\AppData\Local\f7283604\plg\Bsi0QBBW.json"
                7⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:2736
                • C:\Users\Admin\AppData\Local\JavaHelper\Java.exe
                  -a "C:\Users\Admin\AppData\Local\Temp\unk.xml"
                  8⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • Accesses Microsoft Outlook accounts
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4076
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\rdln.exe"' & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4360
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\rdln.exe"'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1168
            • C:\Users\Admin\AppData\Local\Temp\rdln.exe
              "C:\Users\Admin\AppData\Local\Temp\rdln.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1160

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\JavaHelper\Java.exe

    Filesize

    1.4MB

    MD5

    32d4216d4ef2af912921fc2931c0bd88

    SHA1

    3e79dd260b67ed27134246e9461d8878c7ac73e3

    SHA256

    d1ecf0f3592c06329182cbcd25fa654bb48c441c0b54bfb5c4b40fbaa517cdbf

    SHA512

    7a25bcf3954238ab946ce95dc4153518fe67e773845f2bd037eac64c93906223b3ec611a04160cc20f85c4afa0b7124c8eacb43667ecb3fdde2776698f5b2b37

  • C:\Users\Admin\AppData\Local\JavaHelper\Java.exe

    Filesize

    1.4MB

    MD5

    32d4216d4ef2af912921fc2931c0bd88

    SHA1

    3e79dd260b67ed27134246e9461d8878c7ac73e3

    SHA256

    d1ecf0f3592c06329182cbcd25fa654bb48c441c0b54bfb5c4b40fbaa517cdbf

    SHA512

    7a25bcf3954238ab946ce95dc4153518fe67e773845f2bd037eac64c93906223b3ec611a04160cc20f85c4afa0b7124c8eacb43667ecb3fdde2776698f5b2b37

  • C:\Users\Admin\AppData\Local\JavaHelper\License.XenArmor

    Filesize

    104B

    MD5

    4f3bde9212e17ef18226866d6ac739b6

    SHA1

    732733bec8314beb81437e60876ffa75e72ae6cd

    SHA256

    212173a405c78d70f90e8ec0699a60ed2f4a9f3a8070de62eabd666c268fb174

    SHA512

    10b7cdae0b9a7b0f8e1bfc66a60675fa9b25c523864d5ae3da243f4e6e4c5194f3bd92af57ac956157442f66414bdd3393d0a1e5ba4ef0f192561e8524d4e744

  • C:\Users\Admin\AppData\Local\JavaHelper\License.XenArmor

    Filesize

    104B

    MD5

    bf5da170f7c9a8eae88d1cb1a191ff80

    SHA1

    dd1b991a1b03587a5d1edc94e919a2070e325610

    SHA256

    e5d5110feb21939d82d962981aeaaafc4643b40a9b87cbed800ace82135d57cd

    SHA512

    9e32247d8556fd6efffbf7b6b9c325652d8c4b223b0fa38020879171476a49ab1f64d8897b5d8d92b79c5484fd9d5899be26ca5f664ee1f9c2acb0857084121e

  • C:\Users\Admin\AppData\Local\JavaHelper\Unknown.dll

    Filesize

    793KB

    MD5

    86114faba7e1ec4a667d2bcb2e23f024

    SHA1

    670df6e1ba1dc6bece046e8b2e573dd36748245e

    SHA256

    568da887725ccfdc4c5aae3ff66792fe60eca4e0818338f6a8434be66a6fe46d

    SHA512

    d26ee0da6ccd4022982cf848c46e40f6781b667e39d0c5daf5ea8d74c44e55c55a5f7590a4d2a60aa1911358ca783c4276a9b4e6311c4cea20df1ebd4f7f457f

  • C:\Users\Admin\AppData\Local\JavaHelper\Unknown.dll

    Filesize

    793KB

    MD5

    86114faba7e1ec4a667d2bcb2e23f024

    SHA1

    670df6e1ba1dc6bece046e8b2e573dd36748245e

    SHA256

    568da887725ccfdc4c5aae3ff66792fe60eca4e0818338f6a8434be66a6fe46d

    SHA512

    d26ee0da6ccd4022982cf848c46e40f6781b667e39d0c5daf5ea8d74c44e55c55a5f7590a4d2a60aa1911358ca783c4276a9b4e6311c4cea20df1ebd4f7f457f

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    6cf293cb4d80be23433eecf74ddb5503

    SHA1

    24fe4752df102c2ef492954d6b046cb5512ad408

    SHA256

    b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

    SHA512

    0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    64B

    MD5

    d8b9a260789a22d72263ef3bb119108c

    SHA1

    376a9bd48726f422679f2cd65003442c0b6f6dd5

    SHA256

    d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc

    SHA512

    550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

  • C:\Users\Admin\AppData\Local\Temp\bit.exe

    Filesize

    1.4MB

    MD5

    32d4216d4ef2af912921fc2931c0bd88

    SHA1

    3e79dd260b67ed27134246e9461d8878c7ac73e3

    SHA256

    d1ecf0f3592c06329182cbcd25fa654bb48c441c0b54bfb5c4b40fbaa517cdbf

    SHA512

    7a25bcf3954238ab946ce95dc4153518fe67e773845f2bd037eac64c93906223b3ec611a04160cc20f85c4afa0b7124c8eacb43667ecb3fdde2776698f5b2b37

  • C:\Users\Admin\AppData\Local\Temp\bit.exe

    Filesize

    1.4MB

    MD5

    32d4216d4ef2af912921fc2931c0bd88

    SHA1

    3e79dd260b67ed27134246e9461d8878c7ac73e3

    SHA256

    d1ecf0f3592c06329182cbcd25fa654bb48c441c0b54bfb5c4b40fbaa517cdbf

    SHA512

    7a25bcf3954238ab946ce95dc4153518fe67e773845f2bd037eac64c93906223b3ec611a04160cc20f85c4afa0b7124c8eacb43667ecb3fdde2776698f5b2b37

  • C:\Users\Admin\AppData\Local\Temp\rdln.exe

    Filesize

    95KB

    MD5

    6aefd743bed0887a18bbbd3b0c533dfb

    SHA1

    bb8140a7efc7a1dec295fa4894b0efa7203c6b49

    SHA256

    001170049bf107796ad564d572ef540743e0a66805f61a51a980998f7c09f5d1

    SHA512

    70cc520173a922443d4ec81f487227a4d6a5e2c3f7d3cee1c0a6ecc94cf8ceee64e53d75e6f6a5f51d0ae050939d78b9cad9d72bf5a3872c72a2ad7a69842929

  • C:\Users\Admin\AppData\Local\Temp\rdln.exe

    Filesize

    95KB

    MD5

    6aefd743bed0887a18bbbd3b0c533dfb

    SHA1

    bb8140a7efc7a1dec295fa4894b0efa7203c6b49

    SHA256

    001170049bf107796ad564d572ef540743e0a66805f61a51a980998f7c09f5d1

    SHA512

    70cc520173a922443d4ec81f487227a4d6a5e2c3f7d3cee1c0a6ecc94cf8ceee64e53d75e6f6a5f51d0ae050939d78b9cad9d72bf5a3872c72a2ad7a69842929

  • C:\Users\Admin\AppData\Local\Temp\tmpBBE2.tmp.bat

    Filesize

    156B

    MD5

    900be6654b3e3a5247dca093285bba19

    SHA1

    5957a6875a58679000680960091140028f45ca08

    SHA256

    5fb39351270e52e068d7c5ba043efe524e34fb6305b04336a9797aa87e180d99

    SHA512

    7820193ef6853b05ccfd9e8059c5e22d1d0a31fc14c8555140791c29a643583872782574ef3a76f5e7a728ab83114a3c3c3be34050eac6ca41b7d15155e64cd9

  • C:\Users\Admin\AppData\Local\Temp\unk.xml

    Filesize

    1KB

    MD5

    ce3e2f5f04eff81b3b7130a90a8e3a6e

    SHA1

    fe9ac39d1db0a28aeef54741003d3f639125dc1c

    SHA256

    b45d1dda071c8ee6b1078e8f71661ee1511887daf491a9f81415232a3c3bd631

    SHA512

    8cd831f9231cc30eeed546b47401459a2737d160faf0eacc823d286de22f79d68a95b994dce1f1eb6e7fa96e24aadeac50659115afe74148a33e6d31012ed357

  • C:\Users\Admin\AppData\Local\f7283604\plg\Bsi0QBBW.json

    Filesize

    1KB

    MD5

    ce3e2f5f04eff81b3b7130a90a8e3a6e

    SHA1

    fe9ac39d1db0a28aeef54741003d3f639125dc1c

    SHA256

    b45d1dda071c8ee6b1078e8f71661ee1511887daf491a9f81415232a3c3bd631

    SHA512

    8cd831f9231cc30eeed546b47401459a2737d160faf0eacc823d286de22f79d68a95b994dce1f1eb6e7fa96e24aadeac50659115afe74148a33e6d31012ed357

  • C:\Users\Admin\AppData\Roaming\GoogleDriver.exe

    Filesize

    63KB

    MD5

    dae21c538a7a4f8294d7e19916be9100

    SHA1

    cea1c44030c6f45243a9408e59f8e43304402438

    SHA256

    3184a8183ddd00795ae4da31244c3bdf010ab97addc4df2b66129982c9ede4e4

    SHA512

    8e9dd2b4e4ec9b28cb7c40e41f6ba8607e1c16351398d5de84965ee0a596fe255b8bfafb61eee99c83281d7cb43b029695ce68db3b7c942acfe392d63f7d4e26

  • C:\Users\Admin\AppData\Roaming\GoogleDriver.exe

    Filesize

    63KB

    MD5

    dae21c538a7a4f8294d7e19916be9100

    SHA1

    cea1c44030c6f45243a9408e59f8e43304402438

    SHA256

    3184a8183ddd00795ae4da31244c3bdf010ab97addc4df2b66129982c9ede4e4

    SHA512

    8e9dd2b4e4ec9b28cb7c40e41f6ba8607e1c16351398d5de84965ee0a596fe255b8bfafb61eee99c83281d7cb43b029695ce68db3b7c942acfe392d63f7d4e26

  • memory/404-156-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/404-198-0x0000000074AC0000-0x0000000074AF9000-memory.dmp

    Filesize

    228KB

  • memory/404-159-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/404-158-0x0000000074780000-0x00000000747B9000-memory.dmp

    Filesize

    228KB

  • memory/404-157-0x0000000074AC0000-0x0000000074AF9000-memory.dmp

    Filesize

    228KB

  • memory/1160-172-0x0000000004FC0000-0x00000000050CA000-memory.dmp

    Filesize

    1.0MB

  • memory/1160-170-0x0000000004CB0000-0x0000000004CC2000-memory.dmp

    Filesize

    72KB

  • memory/1160-168-0x0000000000330000-0x000000000034E000-memory.dmp

    Filesize

    120KB

  • memory/1160-202-0x00000000063A0000-0x0000000006416000-memory.dmp

    Filesize

    472KB

  • memory/1160-201-0x0000000006300000-0x0000000006392000-memory.dmp

    Filesize

    584KB

  • memory/1160-203-0x00000000066D0000-0x00000000066EE000-memory.dmp

    Filesize

    120KB

  • memory/1160-200-0x00000000067B0000-0x0000000006D54000-memory.dmp

    Filesize

    5.6MB

  • memory/1160-171-0x0000000004D40000-0x0000000004D7C000-memory.dmp

    Filesize

    240KB

  • memory/1160-169-0x0000000005360000-0x0000000005978000-memory.dmp

    Filesize

    6.1MB

  • memory/1160-204-0x0000000007030000-0x00000000071F2000-memory.dmp

    Filesize

    1.8MB

  • memory/1160-205-0x0000000007730000-0x0000000007C5C000-memory.dmp

    Filesize

    5.2MB

  • memory/1160-199-0x0000000005F90000-0x0000000005FF6000-memory.dmp

    Filesize

    408KB

  • memory/1168-167-0x00007FF883FC0000-0x00007FF884A81000-memory.dmp

    Filesize

    10.8MB

  • memory/2736-196-0x0000000000400000-0x00000000008DC000-memory.dmp

    Filesize

    4.9MB

  • memory/2736-174-0x0000000000400000-0x00000000008DC000-memory.dmp

    Filesize

    4.9MB

  • memory/2736-177-0x0000000000400000-0x00000000008DC000-memory.dmp

    Filesize

    4.9MB

  • memory/2736-178-0x0000000000400000-0x00000000008DC000-memory.dmp

    Filesize

    4.9MB

  • memory/2736-179-0x0000000000400000-0x00000000008DC000-memory.dmp

    Filesize

    4.9MB

  • memory/3712-150-0x0000027F922A0000-0x0000027F922C2000-memory.dmp

    Filesize

    136KB

  • memory/3712-155-0x00007FF883FC0000-0x00007FF884A81000-memory.dmp

    Filesize

    10.8MB

  • memory/3712-151-0x00007FF883FC0000-0x00007FF884A81000-memory.dmp

    Filesize

    10.8MB

  • memory/4076-193-0x0000000010000000-0x0000000010227000-memory.dmp

    Filesize

    2.2MB

  • memory/4076-181-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/4076-185-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/4076-187-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/4076-188-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/4076-184-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/4076-183-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/4076-191-0x0000000010000000-0x0000000010227000-memory.dmp

    Filesize

    2.2MB

  • memory/4076-192-0x0000000000400000-0x00000000006FE000-memory.dmp

    Filesize

    3.0MB

  • memory/4712-132-0x00000161C0E90000-0x00000161C0EA6000-memory.dmp

    Filesize

    88KB

  • memory/4712-137-0x00007FF883FC0000-0x00007FF884A81000-memory.dmp

    Filesize

    10.8MB

  • memory/4712-134-0x00007FF883FC0000-0x00007FF884A81000-memory.dmp

    Filesize

    10.8MB

  • memory/4712-133-0x00007FF883FC0000-0x00007FF884A81000-memory.dmp

    Filesize

    10.8MB

  • memory/4832-147-0x00000260FA1E0000-0x00000260FA1FE000-memory.dmp

    Filesize

    120KB

  • memory/4832-146-0x00000260FA160000-0x00000260FA1D6000-memory.dmp

    Filesize

    472KB

  • memory/4832-145-0x00007FF883FC0000-0x00007FF884A81000-memory.dmp

    Filesize

    10.8MB

  • memory/4832-144-0x00007FF883FC0000-0x00007FF884A81000-memory.dmp

    Filesize

    10.8MB