Analysis

  • max time kernel
    148s
  • max time network
    145s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    30-04-2024 00:46

General

  • Target

    REXObfuscator.exe

  • Size

    4.9MB

  • MD5

    c80af0de7960d66227c20901ad220feb

  • SHA1

    83fe8468210035bbb2c24b50645a11e62fb377bd

  • SHA256

    a0dee72c5357c474929e083d2205d18b00fedb479ba4fba32fffc91c3d32c6b9

  • SHA512

    f34e1a276cd3db5676e5d6ef92343f1d456c72e93024cf9bde817bf6a3ae0aa9f903123b3796862fa28e1e8cbcf1271bb77f96ac4f699a79ddab1134fb924f13

  • SSDEEP

    98304:Fz/2M3gz6lUcoD83VAZGtqEnQcvytg1ucK3t:V/2M3/lfXlAZXEnQcaeucK3t

Malware Config

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla payload 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 6 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 25 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\REXObfuscator.exe
    "C:\Users\Admin\AppData\Local\Temp\REXObfuscator.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2416
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://discord.gg/unban
      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:3112
      • 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,0x7ffad2683cb8,0x7ffad2683cc8,0x7ffad2683cd8
        3⤵
          PID:1600
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1920,14649755992391656803,14508103811672265699,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1940 /prefetch:2
          3⤵
            PID:4808
          • 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=1920,14649755992391656803,14508103811672265699,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2364 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:3568
          • 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=1920,14649755992391656803,14508103811672265699,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2680 /prefetch:8
            3⤵
              PID:4804
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,14649755992391656803,14508103811672265699,131072 --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=3244 /prefetch:1
              3⤵
                PID:3584
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,14649755992391656803,14508103811672265699,131072 --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=3256 /prefetch:1
                3⤵
                  PID:348
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,14649755992391656803,14508103811672265699,131072 --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=4932 /prefetch:1
                  3⤵
                    PID:4728
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=audio.mojom.AudioService --field-trial-handle=1920,14649755992391656803,14508103811672265699,131072 --lang=en-US --service-sandbox-type=audio --mojo-platform-channel-handle=4036 /prefetch:8
                    3⤵
                      PID:5092
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=video_capture.mojom.VideoCaptureService --field-trial-handle=1920,14649755992391656803,14508103811672265699,131072 --lang=en-US --service-sandbox-type=video_capture --mojo-platform-channel-handle=3256 /prefetch:8
                      3⤵
                      • Modifies registry class
                      • Suspicious behavior: EnumeratesProcesses
                      PID:3852
                    • 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=1920,14649755992391656803,14508103811672265699,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5496 /prefetch:8
                      3⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:3816
                    • 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=1920,14649755992391656803,14508103811672265699,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3984 /prefetch:8
                      3⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:2432
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,14649755992391656803,14508103811672265699,131072 --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=5620 /prefetch:1
                      3⤵
                        PID:3732
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,14649755992391656803,14508103811672265699,131072 --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=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5208 /prefetch:1
                        3⤵
                          PID:4176
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,14649755992391656803,14508103811672265699,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4964 /prefetch:1
                          3⤵
                            PID:1708
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1920,14649755992391656803,14508103811672265699,131072 --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=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5924 /prefetch:1
                            3⤵
                              PID:4908
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1920,14649755992391656803,14508103811672265699,131072 --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=10.0.22000.1 --gpu-preferences=SAAAAAAAAADoAAAwAAAAAAAAAAAAAAAAAABgAAAQAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=5716 /prefetch:2
                              3⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:348
                        • C:\Windows\System32\CompPkgSrv.exe
                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                          1⤵
                            PID:396
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:3440

                            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

                              704d4cabea796e63d81497ab24b05379

                              SHA1

                              b4d01216a6985559bd4b6d193ed1ec0f93b15ff8

                              SHA256

                              3db2f8ac0fb3889fcf383209199e35ac8380cf1b78714fc5900df247ba324d26

                              SHA512

                              0f4803b7b7396a29d43d40f971701fd1af12d82f559dcfd25e0ca9cc8868a182acba7b28987142c1f003efd7dd22e474ac4c8f01fe73725b3618a7bf3e77801d

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

                              152B

                              MD5

                              de47c3995ae35661b0c60c1f1d30f0ab

                              SHA1

                              6634569b803dc681dc068de3a3794053fa68c0ca

                              SHA256

                              4d063bb78bd4fa86cee3d393dd31a08cab05e3539d31ca9f0a294df754cd00c7

                              SHA512

                              852a9580564fd4c53a9982ddf36a5679dbdce55d445b979001b4d97d60a9a688e532821403322c88acc42f6b7fa9cc5e964a79cbe142a96cbe0f5612fe1d61cb

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

                              840B

                              MD5

                              43068d26459360723351e2bd302595d4

                              SHA1

                              4fe707e6e266c30f4fb3f414a61cc58193931a52

                              SHA256

                              65490f1951a0acc69fb6b9ee52cd8e9d5972f408120670167fe27f2a06df5f64

                              SHA512

                              710d89555f7742710fa2be63f0f6b2063d4a462987fbdad7ccf1c3de0048c7e2e2350cde4d9d287988c30fe5139ef1bd7f0bba8b3acf84c7c69335218b0568a3

                            • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
                              Filesize

                              323B

                              MD5

                              74c9e7193b0cb61e692095d8d9e01ae8

                              SHA1

                              2f60d0b754e400d545d5f3829ae3b0a0b990d821

                              SHA256

                              b51c6699b167d0179b11f965336dd9133829945e8992fb391043536d336d9baf

                              SHA512

                              e3abb8a66b88de18aa084934f2d481d7f10060d35b0426a12b7dc1e7a3a8199261be181e889a4054c5d108884a16eb304a7e1b575de21820bd97acb48c13d747

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

                              5KB

                              MD5

                              45fbe084ca6bf0581469a034f382786b

                              SHA1

                              97fe11863aab981e9fb253b81adef2b4625971ae

                              SHA256

                              fdf9f30ff5fba392aa7a04253da76417c00665f7639b670953f1e1726732483a

                              SHA512

                              5aa3e4fd57b94180d6e29cec704870274578c58510532fc7bbbd519704036fe05841b10c5c333eb3d2df71b514fa25c1cffbd243a9a98f705a3a891753d87f1d

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

                              6KB

                              MD5

                              3ffeb8fd4bdfbabec5b9b1496160dadc

                              SHA1

                              406e463c76e9b4283cbb964608b33976bc723c7b

                              SHA256

                              ab650795f465291660b96dee5fbb44d37eae42b39bd3530c44a2883851a12ac1

                              SHA512

                              1c1348cbc2c5991be18ed8e64ab601c2b6f31928a3373b4736de95c1fd6ce1537c97761ddc5a1b9134f48040c5e06e0009b48b82147e06007841a5ee01ae77ef

                            • 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

                              11KB

                              MD5

                              b72d31f94f3ab863159eb83e0b1e5787

                              SHA1

                              9d795b582493cf8d18dff96ce8caca3c89d73ede

                              SHA256

                              0148951ca66125f59e715fd39de87cda1dabeb818c73242b07632efbd2033e66

                              SHA512

                              5d658b825d2764acb688e8d1a711065f2c5b9c1206e5270d44c55a4435dfb606a7bc79708098fd3986f276de5c5f7fed2a2165e3973fdacda44bc2f3e3d2887b

                            • \??\pipe\LOCAL\crashpad_3112_HOPGOQWSAYZCBJEW
                              MD5

                              d41d8cd98f00b204e9800998ecf8427e

                              SHA1

                              da39a3ee5e6b4b0d3255bfef95601890afd80709

                              SHA256

                              e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                              SHA512

                              cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                            • memory/2416-6-0x0000000007230000-0x0000000007296000-memory.dmp
                              Filesize

                              408KB

                            • memory/2416-5-0x0000000007090000-0x0000000007122000-memory.dmp
                              Filesize

                              584KB

                            • memory/2416-13-0x000000000A340000-0x000000000A37C000-memory.dmp
                              Filesize

                              240KB

                            • memory/2416-10-0x0000000009A40000-0x0000000009A52000-memory.dmp
                              Filesize

                              72KB

                            • memory/2416-9-0x00000000059B0000-0x00000000059C0000-memory.dmp
                              Filesize

                              64KB

                            • memory/2416-8-0x0000000005DC0000-0x0000000005FD2000-memory.dmp
                              Filesize

                              2.1MB

                            • memory/2416-7-0x0000000005D30000-0x0000000005D3A000-memory.dmp
                              Filesize

                              40KB

                            • memory/2416-0-0x0000000000A10000-0x0000000000F0E000-memory.dmp
                              Filesize

                              5.0MB

                            • memory/2416-4-0x0000000007640000-0x0000000007BE6000-memory.dmp
                              Filesize

                              5.6MB

                            • memory/2416-11-0x0000000009AC0000-0x0000000009B72000-memory.dmp
                              Filesize

                              712KB

                            • memory/2416-3-0x0000000006CD0000-0x0000000007092000-memory.dmp
                              Filesize

                              3.8MB

                            • memory/2416-164-0x0000000074FC0000-0x0000000075771000-memory.dmp
                              Filesize

                              7.7MB

                            • memory/2416-165-0x00000000059B0000-0x00000000059C0000-memory.dmp
                              Filesize

                              64KB

                            • memory/2416-166-0x00000000059B0000-0x00000000059C0000-memory.dmp
                              Filesize

                              64KB

                            • memory/2416-2-0x00000000059B0000-0x00000000059C0000-memory.dmp
                              Filesize

                              64KB

                            • memory/2416-191-0x0000000074FC0000-0x0000000075771000-memory.dmp
                              Filesize

                              7.7MB

                            • memory/2416-1-0x0000000074FC0000-0x0000000075771000-memory.dmp
                              Filesize

                              7.7MB