Resubmissions

11-11-2024 13:51

241111-q54elszdrl 10

11-11-2024 13:41

241111-qy5zvstjer 10

11-11-2024 13:36

241111-qwhrjszdkn 10

11-11-2024 13:30

241111-qr3k6azcqp 10

Analysis

  • max time kernel
    46s
  • max time network
    48s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-11-2024 13:30

Errors

Reason
Machine shutdown

General

  • Target

    SunlightBootstrapper.exe

  • Size

    1.8MB

  • MD5

    7c4f1852448b6217ca92deecaceb6247

  • SHA1

    23f8b47a3a5bbcadb7d01dd8a727e0c2c48c0848

  • SHA256

    8f6baf69e7e047012b20299cd4d3bf4f86eaee8c7f42fed6cb4a33b79ef51dd2

  • SHA512

    4ef4281529f2159761f11ad890da0f7d79e2513019a1fd717b312ef2fb0ef9d01a54cb07561e40b0c12edd46089a8228f977ebb2ac109939bdddda57fad2f812

  • SSDEEP

    24576:dsmUYlIZ2RBbEeUhk7Dz6rdnkYA1LUqBFJJCZm4E6+eQ:emUYlIckeUAGnmLtFaZ0pe

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

109.87.212.225:1337

Mutex

oIyMus9FxRxA

Attributes
  • delay

    3

  • install

    true

  • install_file

    dwm.exe

  • install_folder

    %Temp%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • Async RAT payload 1 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies data under HKEY_USERS 15 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious behavior: LoadsDriver 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SunlightBootstrapper.exe
    "C:\Users\Admin\AppData\Local\Temp\SunlightBootstrapper.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4828
    • C:\Users\Admin\AppData\Local\Temp\tmpBF97.tmp.com
      "C:\Users\Admin\AppData\Local\Temp\tmpBF97.tmp.com"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1988
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "dwm" /tr '"C:\Users\Admin\AppData\Local\Temp\dwm.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:668
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "dwm" /tr '"C:\Users\Admin\AppData\Local\Temp\dwm.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:4516
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD2E0.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2340
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:4280
        • C:\Users\Admin\AppData\Local\Temp\dwm.exe
          "C:\Users\Admin\AppData\Local\Temp\dwm.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:1920
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c Shutdown /s /f /t 00
            5⤵
            • System Location Discovery: System Language Discovery
            PID:5972
            • C:\Windows\SysWOW64\shutdown.exe
              Shutdown /s /f /t 00
              6⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              PID:6016
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --default-search-provider=? --out-pipe-name=MSEdgeDefault47d524c0ha78bh430cha8fdh8d44ffb65217
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1852
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x120,0x124,0x128,0xfc,0x12c,0x7fffa5e046f8,0x7fffa5e04708,0x7fffa5e04718
      2⤵
        PID:5152
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2108,7490185293959294685,8775868524801676678,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2144 /prefetch:2
        2⤵
          PID:5424
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2108,7490185293959294685,8775868524801676678,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2296 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:5436
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2108,7490185293959294685,8775868524801676678,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2932 /prefetch:8
          2⤵
            PID:5540
        • C:\Windows\System32\CompPkgSrv.exe
          C:\Windows\System32\CompPkgSrv.exe -Embedding
          1⤵
            PID:5684
          • C:\Windows\System32\CompPkgSrv.exe
            C:\Windows\System32\CompPkgSrv.exe -Embedding
            1⤵
              PID:5728
            • C:\Windows\system32\LogonUI.exe
              "LogonUI.exe" /flags:0x4 /state0:0xa39b5055 /state1:0x41c64e6d
              1⤵
              • Modifies data under HKEY_USERS
              • Suspicious use of SetWindowsHookEx
              PID:6052

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

              Filesize

              152B

              MD5

              f426165d1e5f7df1b7a3758c306cd4ae

              SHA1

              59ef728fbbb5c4197600f61daec48556fec651c1

              SHA256

              b68dfc21866d0abe5c75d70acc54670421fa9b26baf98af852768676a901b841

              SHA512

              8d437fcb85acb0705bf080141e7a021740901248985a76299ea8c43e46ad78fb88c738322cf302f6a550caa5e79d85b36827e9b329b1094521b17cf638c015b6

            • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

              Filesize

              5KB

              MD5

              cb1ede2fbb342fd9d7b3cbc922222745

              SHA1

              881be04789b89d78b537a6db1a53541d877edff0

              SHA256

              f1630aec5421881f9dffec63d0f8f76a2e49ffe8a2ffe79eea41b44ec19dacac

              SHA512

              8d25930459d6aa9dc8795a2a47f03894c718b2ef487f762fc4c1d9b9341aa48e2b632b544577d0705b8c1f801d745b7e760159b09ede0b788c224e26030d5b2c

            • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

              Filesize

              8KB

              MD5

              44b7f031caf7b9d927b86b6eb85c1e73

              SHA1

              d448c7c9da26b8b5a74783cc2fc15122dea6bb00

              SHA256

              fe245ad3d5ff913fdc2287671003d196d4aafb84d941fdfa876952d64eb41394

              SHA512

              894bfbda18b3d992866927faf0f4af7c8dbd7605106bedb446f62b3fd034f6a886712bf2ec4f9b949c7f8047afb98829a5506c2f784f129974d6e06cf7f3b898

            • C:\Users\Admin\AppData\Local\Temp\tmpBF97.tmp.com

              Filesize

              47KB

              MD5

              c19fe978050f62a6efa3e92e37099ac5

              SHA1

              17029ede51032d5809a9f8c9b501de24603d5bef

              SHA256

              8ff24a5f07daa0a3d30c5482229825037b2ed80580c2a9fc7734ba3b162dee4a

              SHA512

              9f23ca7704e608e68194e41ef948d01d60aeb8361de24f3984410db7400039b0f13d5f7fc54c639ef646715faafb72ea471f3cb6fe76eaa3682346dd09ad6670

            • C:\Users\Admin\AppData\Local\Temp\tmpD2E0.tmp.bat

              Filesize

              150B

              MD5

              19832d2daf3184e4628f957a8edee9fc

              SHA1

              9f9bf8d7f24717ac5796fed3a9b49b1c584a443b

              SHA256

              8d53f01f364f652f753f470d13b852a1b2b6439c9299999465b232bca620003c

              SHA512

              b60d1919143b769cab25b45f27346d2c85004c8a0e3ac2210d62f6fa6fc93095c8d3a438c1c80dde4c07f9921193c2998d2a8d0dd75fa7f10a65903f503d8eee

            • \??\pipe\LOCAL\crashpad_1852_CYJCTRBKLCXMKNKC

              MD5

              d41d8cd98f00b204e9800998ecf8427e

              SHA1

              da39a3ee5e6b4b0d3255bfef95601890afd80709

              SHA256

              e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

              SHA512

              cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

            • memory/1920-28-0x0000000006450000-0x000000000645E000-memory.dmp

              Filesize

              56KB

            • memory/1920-80-0x00000000067E0000-0x00000000067EE000-memory.dmp

              Filesize

              56KB

            • memory/1920-26-0x0000000005CA0000-0x0000000006244000-memory.dmp

              Filesize

              5.6MB

            • memory/1920-27-0x00000000064D0000-0x0000000006546000-memory.dmp

              Filesize

              472KB

            • memory/1920-29-0x00000000064A0000-0x00000000064BE000-memory.dmp

              Filesize

              120KB

            • memory/1920-30-0x00000000068D0000-0x0000000006962000-memory.dmp

              Filesize

              584KB

            • memory/1988-9-0x00000000007B0000-0x00000000007C2000-memory.dmp

              Filesize

              72KB

            • memory/1988-12-0x00000000055E0000-0x000000000567C000-memory.dmp

              Filesize

              624KB

            • memory/1988-17-0x00000000751F0000-0x00000000759A0000-memory.dmp

              Filesize

              7.7MB

            • memory/1988-10-0x00000000751F0000-0x00000000759A0000-memory.dmp

              Filesize

              7.7MB

            • memory/1988-11-0x0000000005190000-0x00000000051F6000-memory.dmp

              Filesize

              408KB

            • memory/1988-8-0x00000000751FE000-0x00000000751FF000-memory.dmp

              Filesize

              4KB

            • memory/4828-19-0x00007FFFAC463000-0x00007FFFAC465000-memory.dmp

              Filesize

              8KB

            • memory/4828-0-0x00007FFFAC463000-0x00007FFFAC465000-memory.dmp

              Filesize

              8KB

            • memory/4828-2-0x00007FFFAC460000-0x00007FFFACF21000-memory.dmp

              Filesize

              10.8MB

            • memory/4828-1-0x000001EA92CE0000-0x000001EA92EB0000-memory.dmp

              Filesize

              1.8MB

            • memory/4828-23-0x00007FFFAC460000-0x00007FFFACF21000-memory.dmp

              Filesize

              10.8MB