Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-12-2024 08:16

General

  • Target

    Client-built1.exe

  • Size

    3.1MB

  • MD5

    bcaf70faf8cef879f13519ff4a94f9ab

  • SHA1

    cdc11c7fd22cacf568ccdd97d00928128e35e974

  • SHA256

    6661ba1349745231bcee0d0f97ad80ed2db94732ab32cb4fa5e969cfa631a695

  • SHA512

    f0d795820773834b6fb19ba92cb0a698e645498f1252594626d88cdf952bc4503d4e4d32f970bad0267b7040af898721e186215184a27ca6a9aa05f829b77214

  • SSDEEP

    49152:nv7I22SsaNYfdPBldt698dBcjHrKJGKGCDiUTHHB72eh2NT:nvE22SsaNYfdPBldt6+dBcjHrKQ

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

SYSTEM

C2

rather-reputation.gl.at.ply.gg:23827

Mutex

6f4b08b2-7091-41aa-a67e-9b869448a0c0

Attributes
  • encryption_key

    17D2A006DF537BB025A18049E5586744E13D89C5

  • install_name

    trey.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    SYSTEM

  • subdirectory

    trey

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 31 IoCs
  • Suspicious use of SendNotifyMessage 30 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client-built1.exe
    "C:\Users\Admin\AppData\Local\Temp\Client-built1.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2352
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "SYSTEM" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\trey\trey.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1076
    • C:\Users\Admin\AppData\Roaming\trey\trey.exe
      "C:\Users\Admin\AppData\Roaming\trey\trey.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1588
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "SYSTEM" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\trey\trey.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1844
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --profile-directory=Default
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2324
    • 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=0x11c,0x120,0x124,0xf8,0x128,0x7ffc5ca846f8,0x7ffc5ca84708,0x7ffc5ca84718
      2⤵
        PID:116
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1976,10831141829727141851,4746697487369269143,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1980 /prefetch:2
        2⤵
          PID:1904
        • 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=1976,10831141829727141851,4746697487369269143,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2224 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3880
        • 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=1976,10831141829727141851,4746697487369269143,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2888 /prefetch:8
          2⤵
            PID:1696
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1976,10831141829727141851,4746697487369269143,131072 --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=2880 /prefetch:1
            2⤵
              PID:3780
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1976,10831141829727141851,4746697487369269143,131072 --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=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3412 /prefetch:1
              2⤵
                PID:4848
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1976,10831141829727141851,4746697487369269143,131072 --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=4128 /prefetch:1
                2⤵
                  PID:2488
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1976,10831141829727141851,4746697487369269143,131072 --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=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3900 /prefetch:1
                  2⤵
                    PID:3152
                  • 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=1976,10831141829727141851,4746697487369269143,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3604 /prefetch:8
                    2⤵
                      PID:4348
                    • 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=1976,10831141829727141851,4746697487369269143,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3604 /prefetch:8
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:3588
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1976,10831141829727141851,4746697487369269143,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3580 /prefetch:1
                      2⤵
                        PID:4788
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1976,10831141829727141851,4746697487369269143,131072 --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=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4812 /prefetch:1
                        2⤵
                          PID:2856
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1976,10831141829727141851,4746697487369269143,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5060 /prefetch:1
                          2⤵
                            PID:3700
                        • C:\Windows\System32\CompPkgSrv.exe
                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                          1⤵
                            PID:1440
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:4508

                            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

                              61cef8e38cd95bf003f5fdd1dc37dae1

                              SHA1

                              11f2f79ecb349344c143eea9a0fed41891a3467f

                              SHA256

                              ae671613623b4477fbd5daf1fd2d148ae2a09ddcc3804b2b6d4ffcb60b317e3e

                              SHA512

                              6fb9b333fe0e8fde19fdd0bd01a1990a4e60a87c0a02bc8297da1206e42f8690d06b030308e58c862e9e77714a585eed7cc1627590d99a10aeb77fc0dd3d864d

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

                              Filesize

                              5KB

                              MD5

                              2a14b223e75d60d3b5259549037ea65d

                              SHA1

                              26a506c3253633fe8ee1285243a6fa72a6976bbc

                              SHA256

                              85ba16a0692e49657695e6fb4e18af639a2e9a5edbb89cb4bdb4771788e97fe5

                              SHA512

                              aff1bb5c9c8bbbdd9a4a35894d608476f92876734eeb012675aad9b752580bfa8adfaeed8e4523ab76b0b36715236afed0d6e105ea87ee74928464d5c74e6d04

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

                              Filesize

                              6KB

                              MD5

                              6f1fab2168de20a0e6035f002e6a02a5

                              SHA1

                              79965aaf4c481f599ebc598281e11df156eba02b

                              SHA256

                              c85f9726b0ef25e4258f68684b6a3c4d7397b23867a1d8a3372910ea835ef38a

                              SHA512

                              f71710085a43de5517e5716f3222e77dca4c53bc7eaf2d2523a8986ccd736b5fe3ea1fe7aee640e3770d0e20b8b5beeef9187cb7b34f775153905f114b88b446

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

                              Filesize

                              16B

                              MD5

                              6752a1d65b201c13b62ea44016eb221f

                              SHA1

                              58ecf154d01a62233ed7fb494ace3c3d4ffce08b

                              SHA256

                              0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

                              SHA512

                              9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

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

                              Filesize

                              10KB

                              MD5

                              19da0a903ca14ad39df11df6245df48d

                              SHA1

                              dbfc65ee9753bf6c20b79ac29e3ed56d8be8be9b

                              SHA256

                              88715be79a041c3f35a075036b3a731cdb284178d9d50db56ae912eb3219ae00

                              SHA512

                              8867a1a93221f9c50b993378469aee640a8d004c21ae8451af26ff6f2e4fb6b4e454094b98880c3c80893fc19a428b5a5a1f782ad53dbdc1744e50a87dc926ec

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

                              Filesize

                              3.1MB

                              MD5

                              bcaf70faf8cef879f13519ff4a94f9ab

                              SHA1

                              cdc11c7fd22cacf568ccdd97d00928128e35e974

                              SHA256

                              6661ba1349745231bcee0d0f97ad80ed2db94732ab32cb4fa5e969cfa631a695

                              SHA512

                              f0d795820773834b6fb19ba92cb0a698e645498f1252594626d88cdf952bc4503d4e4d32f970bad0267b7040af898721e186215184a27ca6a9aa05f829b77214

                            • memory/1588-12-0x000000001BE70000-0x000000001BEC0000-memory.dmp

                              Filesize

                              320KB

                            • memory/1588-28-0x000000001CFC0000-0x000000001D169000-memory.dmp

                              Filesize

                              1.7MB

                            • memory/1588-16-0x000000001BF00000-0x000000001BF12000-memory.dmp

                              Filesize

                              72KB

                            • memory/1588-17-0x000000001CB80000-0x000000001CBBC000-memory.dmp

                              Filesize

                              240KB

                            • memory/1588-18-0x00007FFC61BE0000-0x00007FFC626A1000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/1588-19-0x000000001CFC0000-0x000000001D169000-memory.dmp

                              Filesize

                              1.7MB

                            • memory/1588-20-0x000000001CFC0000-0x000000001D169000-memory.dmp

                              Filesize

                              1.7MB

                            • memory/1588-21-0x000000001CFC0000-0x000000001D169000-memory.dmp

                              Filesize

                              1.7MB

                            • memory/1588-22-0x000000001CFC0000-0x000000001D169000-memory.dmp

                              Filesize

                              1.7MB

                            • memory/1588-26-0x000000001CFC0000-0x000000001D169000-memory.dmp

                              Filesize

                              1.7MB

                            • memory/1588-27-0x000000001CFC0000-0x000000001D169000-memory.dmp

                              Filesize

                              1.7MB

                            • memory/1588-13-0x000000001BF80000-0x000000001C032000-memory.dmp

                              Filesize

                              712KB

                            • memory/1588-98-0x000000001CFC0000-0x000000001D169000-memory.dmp

                              Filesize

                              1.7MB

                            • memory/1588-9-0x00007FFC61BE0000-0x00007FFC626A1000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/1588-11-0x00007FFC61BE0000-0x00007FFC626A1000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/1588-59-0x000000001CFC0000-0x000000001D169000-memory.dmp

                              Filesize

                              1.7MB

                            • memory/1588-88-0x000000001CFC0000-0x000000001D169000-memory.dmp

                              Filesize

                              1.7MB

                            • memory/2352-2-0x00007FFC61BE0000-0x00007FFC626A1000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/2352-1-0x0000000000940000-0x0000000000C64000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/2352-10-0x00007FFC61BE0000-0x00007FFC626A1000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/2352-0-0x00007FFC61BE3000-0x00007FFC61BE5000-memory.dmp

                              Filesize

                              8KB