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Analysis

  • max time kernel
    46s
  • max time network
    49s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241023-en
  • resource tags

    arch:x64arch:x86image:win11-20241023-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04/02/2025, 09:20

General

  • Target

    https://gofile.io/d/Qghnbe

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

2601:147:8500:53c0:959e:b4e0:7099:8e90:4782

Mutex

d363416c-217e-45a7-a228-bcea554cbb52

Attributes
  • encryption_key

    3CD249B929C321E41C5A0D2E0931073C27A2E729

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    dlscord

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Downloads MZ/PE file 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Subvert Trust Controls: Mark-of-the-Web Bypass 1 TTPs 1 IoCs

    When files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named Zone.Identifier with a specific value known as the MOTW.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • NTFS ADS 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 10 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 37 IoCs
  • Suspicious use of SendNotifyMessage 12 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:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --start-maximized --single-argument https://gofile.io/d/Qghnbe
    1⤵
    • Enumerates system info in registry
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2936
    • 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=90.0.4430.212 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=90.0.818.66 --initial-client-data=0x100,0x104,0x108,0xdc,0x10c,0x7ffab87c3cb8,0x7ffab87c3cc8,0x7ffab87c3cd8
      2⤵
        PID:5104
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1980 /prefetch:2
        2⤵
          PID:3404
        • 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=1964,14789996237095780753,972609869631094688,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2072 /prefetch:3
          2⤵
          • Downloads MZ/PE file
          • Suspicious behavior: EnumeratesProcesses
          PID:3316
        • 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=1964,14789996237095780753,972609869631094688,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2544 /prefetch:8
          2⤵
            PID:4044
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --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=3296 /prefetch:1
            2⤵
              PID:3116
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --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=3320 /prefetch:1
              2⤵
                PID:4192
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --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=4592 /prefetch:1
                2⤵
                  PID:2364
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5464 /prefetch:1
                  2⤵
                    PID:4048
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --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=4712 /prefetch:1
                    2⤵
                      PID:2252
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=5916 /prefetch:8
                      2⤵
                        PID:3992
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6004 /prefetch:8
                        2⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:1028
                      • C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5976 /prefetch:8
                        2⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:1240
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5188 /prefetch:8
                        2⤵
                        • Subvert Trust Controls: Mark-of-the-Web Bypass
                        • NTFS ADS
                        • Suspicious behavior: EnumeratesProcesses
                        PID:3932
                      • C:\Users\Admin\Downloads\Client-built.exe
                        "C:\Users\Admin\Downloads\Client-built.exe"
                        2⤵
                        • Executes dropped EXE
                        • NTFS ADS
                        • Suspicious use of AdjustPrivilegeToken
                        PID:3192
                        • C:\Windows\SYSTEM32\schtasks.exe
                          "schtasks" /create /tn "dlscord" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
                          3⤵
                          • Scheduled Task/Job: Scheduled Task
                          PID:3056
                        • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                          "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                          3⤵
                          • Executes dropped EXE
                          • Suspicious use of AdjustPrivilegeToken
                          • Suspicious use of SetWindowsHookEx
                          PID:3512
                          • C:\Windows\SYSTEM32\schtasks.exe
                            "schtasks" /create /tn "dlscord" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
                            4⤵
                            • Scheduled Task/Job: Scheduled Task
                            PID:4952
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5488 /prefetch:1
                        2⤵
                          PID:1436
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --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=16 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5452 /prefetch:1
                          2⤵
                            PID:2508
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=17 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6204 /prefetch:1
                            2⤵
                              PID:3468
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1964,14789996237095780753,972609869631094688,131072 --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=18 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6188 /prefetch:1
                              2⤵
                                PID:2604
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:3708
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:2100

                                Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

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                                Downloads

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

                                  Filesize

                                  152B

                                  MD5

                                  5431d6602455a6db6e087223dd47f600

                                  SHA1

                                  27255756dfecd4e0afe4f1185e7708a3d07dea6e

                                  SHA256

                                  7502d9453168c86631fb40ec90567bf80404615d387afc7ec2beb7a075bcc763

                                  SHA512

                                  868f6dcf32ef80459f3ea122b0d2c79191193b5885c86934a97bfec7e64250e10c23e4d00f34c6c2387a04a15f3f266af96e571bbe37077fb374d6d30f35b829

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

                                  Filesize

                                  152B

                                  MD5

                                  7bed1eca5620a49f52232fd55246d09a

                                  SHA1

                                  e429d9d401099a1917a6fb31ab2cf65fcee22030

                                  SHA256

                                  49c484f08c5e22ee6bec6d23681b26b0426ee37b54020f823a2908ab7d0d805e

                                  SHA512

                                  afc8f0b5b95d593f863ad32186d1af4ca333710bcfba86416800e79528616e7b15f8813a20c2cfa9d13688c151bf8c85db454a9eb5c956d6e49db84b4b222ee8

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

                                  Filesize

                                  144B

                                  MD5

                                  5a57721d82c6f0bd17d68beeefdd47bb

                                  SHA1

                                  ba9c6facd56b9833a43e22306b93263517944b66

                                  SHA256

                                  0ebf5e164ef5060e39a6fa6048d55b3891aa4f9254dcac460a6707ce677c0a25

                                  SHA512

                                  fd86087f6749efaf6a6906f78f4e0675990ac3da15e717f17eee45537cad3ba6be42c9d0e6b3c4ff17acf8ae9aaaa56c7d0585d274c62d61f182598f1de9af5d

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

                                  Filesize

                                  6KB

                                  MD5

                                  83d2655c3960c8442fdcfe11bb9e24d7

                                  SHA1

                                  2fd3cf7282de9194a1bb17706b44760482cc03e2

                                  SHA256

                                  d2e0b904cb4bb8edcf9742522865d974632cd8d4f57926a4795c1543796e4074

                                  SHA512

                                  1fe46db16621dd6fe646ecba37a504da1528e1227f62f53567aa766283f03d10becbddff588c7bc902a009ca856f260c2b5d4ebe31a4b9af87d9cf0994a3cb67

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

                                  Filesize

                                  5KB

                                  MD5

                                  5b463d234bc3ef560c3ddc6dcf507327

                                  SHA1

                                  2874792b6b14bb1d019a0d5d1568ccfd433cab55

                                  SHA256

                                  b11e15d8ddfa07ef82e7fab5010f1092d788ff66ce55a94504a1aed97c86f19f

                                  SHA512

                                  e32dfe15e4236447c64423716cd20b54f4edd88dc14184aa037e9935448e07c8240543d103ff55220bcc0e289c43964974c189836c66559b8ca97fccb14b7546

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

                                  Filesize

                                  16B

                                  MD5

                                  46295cac801e5d4857d09837238a6394

                                  SHA1

                                  44e0fa1b517dbf802b18faf0785eeea6ac51594b

                                  SHA256

                                  0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

                                  SHA512

                                  8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

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

                                  Filesize

                                  16B

                                  MD5

                                  206702161f94c5cd39fadd03f4014d98

                                  SHA1

                                  bd8bfc144fb5326d21bd1531523d9fb50e1b600a

                                  SHA256

                                  1005a525006f148c86efcbfb36c6eac091b311532448010f70f7de9a68007167

                                  SHA512

                                  0af09f26941b11991c750d1a2b525c39a8970900e98cba96fd1b55dbf93fee79e18b8aab258f48b4f7bda40d059629bc7770d84371235cdb1352a4f17f80e145

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

                                  Filesize

                                  10KB

                                  MD5

                                  cca5e2e9c2bd49dc2bfb60028d5b5a19

                                  SHA1

                                  a31073a9970c91e682e678e50a551f95306ae4db

                                  SHA256

                                  e7f4457f00e29f0b21b15278a5b3cc818dd369d52a428bcd160ed73d6400a5b8

                                  SHA512

                                  49fb4d6efc2393ca2afd5b6a2d4cf88d5d0d9ac4cee35fa6165b372bfd782aa6be2ae8538bd7794dae13280567b3638c85ef7e322c27683de81bd6d7cd93d3cb

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

                                  Filesize

                                  10KB

                                  MD5

                                  9b13142ee2dafee4e5c4fa78f002b15e

                                  SHA1

                                  ba1fd65337b11841b35d8ea2c57059b560c44f62

                                  SHA256

                                  523516ad7d2d7e3ca914dcda3f7c72870c17fb5d2c3b992ec98490f7051d0716

                                  SHA512

                                  59616e9ad12c9410794909ebc874a3cde7eb2da9915d3560e17e1617a3e8a09ecb2fd5310247276b7e3214fb4613646ac0fe6cba6d83df166064aaa9d665fa14

                                • C:\Users\Admin\Downloads\Client-built.exe:Zone.Identifier

                                  Filesize

                                  26B

                                  MD5

                                  fbccf14d504b7b2dbcb5a5bda75bd93b

                                  SHA1

                                  d59fc84cdd5217c6cf74785703655f78da6b582b

                                  SHA256

                                  eacd09517ce90d34ba562171d15ac40d302f0e691b439f91be1b6406e25f5913

                                  SHA512

                                  aa1d2b1ea3c9de3ccadb319d4e3e3276a2f27dd1a5244fe72de2b6f94083dddc762480482c5c2e53f803cd9e3973ddefc68966f974e124307b5043e654443b98

                                • C:\Users\Admin\Downloads\Unconfirmed 58747.crdownload

                                  Filesize

                                  3.1MB

                                  MD5

                                  f27b44674ce2e151e38131ba61d18a15

                                  SHA1

                                  a06763e0e22f2e92308a7d1f572e32dbb25f9bd2

                                  SHA256

                                  b2d0203c34e3dbe8bd427834a74fca0220556973ec8b6c03e9315a6b831748d4

                                  SHA512

                                  f4c60bb22efd1bff43aaa683d7d7b0ad7f2fec6ba25c4b57a012026863b8cf05119b16026cd6f76fa9fb94a0894a8c06af7684d54a246ee7fb33245ed25016d4

                                • memory/3192-102-0x00000000008E0000-0x0000000000C04000-memory.dmp

                                  Filesize

                                  3.1MB

                                • memory/3512-113-0x0000000003080000-0x00000000030D0000-memory.dmp

                                  Filesize

                                  320KB

                                • memory/3512-114-0x000000001C390000-0x000000001C442000-memory.dmp

                                  Filesize

                                  712KB