Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/04/2024, 01:28

General

  • Target
    821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1.exe
  • Size 1.2MB
  • Sample240405-bv5glahb39
  • SHA256 821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • asyncrat

Version
  • | Edit 3LOSH RAT

Botnet
  • RAT15

C2
  • darkstorm275991.ddns.net:6606

  • darkstorm275991.ddns.net:7707

  • darkstorm275991.ddns.net:8808

  • mrreport.duckdns.org:6606

  • mrreport.duckdns.org:7707

  • mrreport.duckdns.org:8808

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    Windows Session Manager.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Async RAT payload 1 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 2 IoCs
  • Detects file containing reversed ASEP Autorun registry keys 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates physical storage devices 1 TTPs

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

  • 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
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 37 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 25 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1.exe
    "C:\Users\Admin\AppData\Local\Temp\821900f5cf0981a062d0683d5a5905ce407a035d9e0ab7ee0bd110a7403321d1.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4428
    • C:\Users\Admin\AppData\Local\Windows Session Manage.exe
      "C:\Users\Admin\AppData\Local\Windows Session Manage.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4916
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows Session Manager" /tr '"C:\Users\Admin\AppData\Roaming\Windows Session Manager.exe"' & exit
        3⤵
          PID:4880
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /f /sc onlogon /rl highest /tn "Windows Session Manager" /tr '"C:\Users\Admin\AppData\Roaming\Windows Session Manager.exe"'
            4⤵
            • Creates scheduled task(s)
            PID:4844
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4825.tmp.bat""
          3⤵
            PID:3916
            • C:\Windows\SysWOW64\timeout.exe
              timeout 3
              4⤵
              • Delays execution with timeout.exe
              PID:4952
            • C:\Users\Admin\AppData\Roaming\Windows Session Manager.exe
              "C:\Users\Admin\AppData\Roaming\Windows Session Manager.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              PID:5112
        • C:\Users\Admin\AppData\Local\Windows Session Manager.exe
          "C:\Users\Admin\AppData\Local\Windows Session Manager.exe"
          2⤵
          • Executes dropped EXE
          PID:4480
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://t.me/Private_Hacking_Cracking_Tools
          2⤵
          • Enumerates system info in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:3224
          • 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=0xfc,0x100,0x104,0xd8,0x108,0x7ffd2d7446f8,0x7ffd2d744708,0x7ffd2d744718
            3⤵
              PID:2336
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2156,15567117846154429492,12903113840710619430,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2168 /prefetch:2
              3⤵
                PID:1068
              • 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=2156,15567117846154429492,12903113840710619430,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2220 /prefetch:3
                3⤵
                • Suspicious behavior: EnumeratesProcesses
                PID:2624
              • 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=2156,15567117846154429492,12903113840710619430,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2772 /prefetch:8
                3⤵
                  PID:2484
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,15567117846154429492,12903113840710619430,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3328 /prefetch:1
                  3⤵
                    PID:2588
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,15567117846154429492,12903113840710619430,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3340 /prefetch:1
                    3⤵
                      PID:2960
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,15567117846154429492,12903113840710619430,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5084 /prefetch:1
                      3⤵
                        PID:1020
                      • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2156,15567117846154429492,12903113840710619430,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5128 /prefetch:8
                        3⤵
                          PID:4912
                        • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2156,15567117846154429492,12903113840710619430,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5128 /prefetch:8
                          3⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:2932
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,15567117846154429492,12903113840710619430,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4152 /prefetch:1
                          3⤵
                            PID:3084
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,15567117846154429492,12903113840710619430,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5236 /prefetch:1
                            3⤵
                              PID:4028
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,15567117846154429492,12903113840710619430,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5692 /prefetch:1
                              3⤵
                                PID:2860
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,15567117846154429492,12903113840710619430,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5112 /prefetch:1
                                3⤵
                                  PID:3320
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2156,15567117846154429492,12903113840710619430,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2428 /prefetch:2
                                  3⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:2984
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:1844
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:4028

                                Network

                                      MITRE ATT&CK Enterprise v15

                                      Replay Monitor

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                                      Downloads

                                      Windows Session Manager.exe.log

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Windows Session Manager.exe.log
                                      • Size 226B
                                      • SHA256 7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d
                                      • MD5 SHA1 SHA512

                                      settings.dat

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                      • Size 152B
                                      • SHA256 3619c3b82a8cbdce37bfd88b66d4fdfcd728a1112b05eb26998bea527d187932
                                      • MD5 SHA1 SHA512

                                      settings.dat

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                      • Size 152B
                                      • SHA256 d34331aa91a21e127bbe68f55c4c1898c429d9d43545c3253d317ffb105aa24e
                                      • MD5 SHA1 SHA512

                                      the-real-index

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index
                                      • Size 72B
                                      • SHA256 2fb7af1be03ef9921359a415b3acfa9d6d7d61974fef854af5b6dce4a231ba22
                                      • MD5 SHA1 SHA512

                                      Network Persistent State

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
                                      • Size 111B
                                      • SHA256 5dfc321417fc31359f23320ea68014ebfd793c5bbed55f77dab4180bbd4a2026
                                      • MD5 SHA1 SHA512

                                      Network Persistent State

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
                                      • Size 442B
                                      • SHA256 f6a28771a821e4ca9a68a08867f16b5d83925de817008140709a75ca9682fab7
                                      • MD5 SHA1 SHA512

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                      • Size 6KB
                                      • SHA256 0082bb3ad06e8a17dbd538bf4236448736c0e8702614c68ef0812026ae5a36a9
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                      • Size 6KB
                                      • SHA256 62a95848a4f9c5091b8a2fe525333400343f8c6a57dd2c2072eb896d0057e107
                                      • MD5 SHA1 SHA512 SSDEEP

                                      CURRENT

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                      • Size 16B
                                      • SHA256 0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd
                                      • MD5 SHA1 SHA512

                                      Local State

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                      • Size 11KB
                                      • SHA256 7005fd586ba351e73d62bbd71fb30e4df85a71b71da86ec455150823ba3e513b
                                      • MD5 SHA1 SHA512 SSDEEP

                                      tmp4825.tmp.bat

                                      • Path C:\Users\Admin\AppData\Local\Temp\tmp4825.tmp.bat
                                      • Size 167B
                                      • SHA256 1be6360a965b3e6372fd63c4229966318b5e60eee691803350a781c8c59fb85f
                                      • MD5 SHA1 SHA512

                                      Windows Session Manage.exe

                                      • Path C:\Users\Admin\AppData\Local\Windows Session Manage.exe
                                      • Size 66KB
                                      • SHA256 5732891fc200a9a59fdf3b2f96d5977152d1b76eb7220c8fcb28fc476945cddc
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Windows Session Manager.exe

                                      • Path C:\Users\Admin\AppData\Local\Windows Session Manager.exe
                                      • Size 5KB
                                      • SHA256 f5a031207da80580fd8a2f853f4026bec68e7acddb9bbdb7b586ede6cc643d3b
                                      • MD5 SHA1 SHA512 SSDEEP

                                      memory/4428-2-0x00007FFD30870000-0x00007FFD31331000-memory.dmp

                                      memory/4428-34-0x00007FFD30870000-0x00007FFD31331000-memory.dmp

                                      memory/4428-0-0x0000000000290000-0x00000000002B0000-memory.dmp

                                      memory/4480-30-0x0000000000750000-0x0000000000758000-memory.dmp

                                      memory/4480-42-0x0000000074830000-0x0000000074FE0000-memory.dmp

                                      memory/4480-33-0x0000000074830000-0x0000000074FE0000-memory.dmp

                                      memory/4916-87-0x0000000074830000-0x0000000074FE0000-memory.dmp

                                      memory/4916-82-0x0000000004BF0000-0x0000000004C8C000-memory.dmp

                                      memory/4916-79-0x0000000004CE0000-0x0000000004CF0000-memory.dmp

                                      memory/4916-29-0x00000000003A0000-0x00000000003B6000-memory.dmp

                                      memory/4916-31-0x0000000074830000-0x0000000074FE0000-memory.dmp

                                      memory/5112-106-0x0000000005900000-0x0000000005910000-memory.dmp

                                      memory/5112-101-0x0000000074830000-0x0000000074FE0000-memory.dmp

                                      memory/5112-121-0x00000000060C0000-0x0000000006664000-memory.dmp

                                      memory/5112-122-0x0000000005CB0000-0x0000000005D42000-memory.dmp

                                      memory/5112-123-0x0000000005C50000-0x0000000005C5A000-memory.dmp

                                      memory/5112-131-0x0000000005DC0000-0x0000000005E26000-memory.dmp

                                      memory/5112-146-0x0000000074830000-0x0000000074FE0000-memory.dmp

                                      memory/5112-147-0x0000000005900000-0x0000000005910000-memory.dmp