Analysis

  • max time kernel
    33s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2024 18:55

General

  • Target

    sigma rizzler.exe

  • Size

    839KB

  • MD5

    40c7a4426aedab088a4704c699caf3a4

  • SHA1

    558dcd92d48d4827d9ae252f5cccc5377cb78efd

  • SHA256

    c9cad5e9456b15ba20ba8e45ea72a75c5496928d9cb5614482c43979d0882459

  • SHA512

    c5bfca766cbd7858798fc9f14f1a16789f64864ba380c7a61b830812753da92ff2463dd0a22f054a85c4166a96a0068286dee2bb640bf24c9572a2b6d3d48218

  • SSDEEP

    24576:DpS04YNEMuExDiU6E5R9s8xY/2l/dmtnIbt+rp:DL4auS+UjfU2TmdIbt+r

Malware Config

Extracted

Family

orcus

C2

192.168.0.122

Mutex

e3a379c8bf9348faadf4ce5e264e462c

Attributes
  • administration_rights_required

    false

  • anti_debugger

    false

  • anti_tcp_analyzer

    false

  • antivm

    false

  • autostart_method

    1

  • change_creation_date

    false

  • force_installer_administrator_privileges

    false

  • hide_file

    false

  • install

    false

  • installation_folder

    %appdata%\Microsoft\Speech\AudioDriver.exe

  • installservice

    false

  • keylogger_enabled

    false

  • newcreationdate

    11/26/2024 07:32:08

  • plugins

    AgEAAA==

  • reconnect_delay

    10000

  • registry_autostart_keyname

    Audio HD Driver

  • registry_hidden_autostart

    false

  • set_admin_flag

    false

  • tasksch_name

    Audio HD Driver

  • tasksch_request_highest_privileges

    false

  • try_other_autostart_onfail

    false

aes.plain

Signatures

  • Orcus

    Orcus is a Remote Access Trojan that is being sold on underground forums.

  • Orcus family
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 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 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of FindShellTrayWindow 51 IoCs
  • Suspicious use of SendNotifyMessage 49 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe
    "C:\Users\Admin\AppData\Local\Temp\sigma rizzler.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2904
    • C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2988
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2852
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef6ba9758,0x7fef6ba9768,0x7fef6ba9778
      2⤵
        PID:2764
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1184 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:2
        2⤵
          PID:2352
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1508 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:8
          2⤵
            PID:1740
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1600 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:8
            2⤵
              PID:968
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2232 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:1
              2⤵
                PID:2784
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2244 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:1
                2⤵
                  PID:2952
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1400 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:2
                  2⤵
                    PID:944
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1256 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:2
                    2⤵
                      PID:2404
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --mojo-platform-channel-handle=3268 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:1
                      2⤵
                        PID:764
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3764 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:8
                        2⤵
                          PID:1012
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --mojo-platform-channel-handle=3508 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:1
                          2⤵
                            PID:2592
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --mojo-platform-channel-handle=3476 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:1
                            2⤵
                              PID:1568
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=audio.mojom.AudioService --lang=en-US --service-sandbox-type=audio --mojo-platform-channel-handle=2424 --field-trial-handle=1232,i,8581845668353178818,7322690437149138573,131072 /prefetch:8
                              2⤵
                                PID:856
                            • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                              "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                              1⤵
                                PID:1636
                              • C:\Windows\system32\AUDIODG.EXE
                                C:\Windows\system32\AUDIODG.EXE 0x4f4
                                1⤵
                                • Suspicious use of AdjustPrivilegeToken
                                PID:2692
                              • C:\Windows\system32\cmd.exe
                                "C:\Windows\system32\cmd.exe"
                                1⤵
                                  PID:2996
                                  • C:\Windows\system32\ipconfig.exe
                                    ipconfig
                                    2⤵
                                    • Gathers network information
                                    PID:2408

                                Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

                                • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

                                  Filesize

                                  342B

                                  MD5

                                  b3d9fd5b6e9ecde0902136e9eba6fe39

                                  SHA1

                                  21409c353f206c531a3b79934bb3cbe75b7c2fdb

                                  SHA256

                                  9b6d356c1cab5f6f7b397cb7a8e009942f6e4f77c3863c0bec6c4e328b192b47

                                  SHA512

                                  5e35a1fc178e35863fe0a05daf745d6c9c6973e453773b0ce4f3e2c66c2a81d9926c5935f145071d4d38a47eaf80d6f2cd65c442d67f08293cae5f0560811f25

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\9e8b28b9-d3ca-4ded-90f8-0393d1da77bd.tmp

                                  Filesize

                                  5KB

                                  MD5

                                  393d6717d73130d04d1891b16ab54d6c

                                  SHA1

                                  187cb4cf7044986b42be859f6492cb88d54ee8c9

                                  SHA256

                                  eeb6771ec29bf9cd55960d39497e12007a9df6bd3b6096ce9a0cccde718b7233

                                  SHA512

                                  8dabea2d9929c791b57d071a5d82291d1884769663667a9855740e96b916612b47c8991b268faae101ea958e72138534dff95a38648cfc03534fa67210462c7b

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\DawnCache\data_1

                                  Filesize

                                  264KB

                                  MD5

                                  f50f89a0a91564d0b8a211f8921aa7de

                                  SHA1

                                  112403a17dd69d5b9018b8cede023cb3b54eab7d

                                  SHA256

                                  b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                  SHA512

                                  bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                                  Filesize

                                  689B

                                  MD5

                                  59e5caf5d0ff0b10311deee865310a5a

                                  SHA1

                                  8e5ac1a807f9162f16b3ab9e20efe09c1ce7bbb0

                                  SHA256

                                  95ee44b0173518bfd5ecf9036031d3db517ab9deb943f1e8815ac03372c34ee6

                                  SHA512

                                  484608dd32160825638e911a0aaafa56be245df54037980d0d7706b7294e218ed87f0d93072ace22700ff184df0364ce9a0495ee3c75cd2f12c56bba42b559fc

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                  Filesize

                                  4KB

                                  MD5

                                  b3156ec367e152e40c099b4c1fdccbab

                                  SHA1

                                  f935e30c34d9f8bb4079beb3715db8c5f68d5f8b

                                  SHA256

                                  9b178582419f4fab4ff2a1b3e731b7706968781b5bf2d46888b95154a9bdf2fb

                                  SHA512

                                  40ef4d46445196b9c95f379810fa76950fd7c6454d227d1328b5a794b25060a0baa27b30f6aedd63dc74c73955ee94afa4a4f887c1d2f439d855014d86794698

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\000007.dbtmp

                                  Filesize

                                  16B

                                  MD5

                                  18e723571b00fb1694a3bad6c78e4054

                                  SHA1

                                  afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                                  SHA256

                                  8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                                  SHA512

                                  43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

                                • C:\Users\Admin\AppData\Local\Temp\Cab72B2.tmp

                                  Filesize

                                  70KB

                                  MD5

                                  49aebf8cbd62d92ac215b2923fb1b9f5

                                  SHA1

                                  1723be06719828dda65ad804298d0431f6aff976

                                  SHA256

                                  b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

                                  SHA512

                                  bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

                                • C:\Users\Admin\AppData\Local\Temp\Tar72E4.tmp

                                  Filesize

                                  181KB

                                  MD5

                                  4ea6026cf93ec6338144661bf1202cd1

                                  SHA1

                                  a1dec9044f750ad887935a01430bf49322fbdcb7

                                  SHA256

                                  8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

                                  SHA512

                                  6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

                                • \Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

                                  Filesize

                                  839KB

                                  MD5

                                  40c7a4426aedab088a4704c699caf3a4

                                  SHA1

                                  558dcd92d48d4827d9ae252f5cccc5377cb78efd

                                  SHA256

                                  c9cad5e9456b15ba20ba8e45ea72a75c5496928d9cb5614482c43979d0882459

                                  SHA512

                                  c5bfca766cbd7858798fc9f14f1a16789f64864ba380c7a61b830812753da92ff2463dd0a22f054a85c4166a96a0068286dee2bb640bf24c9572a2b6d3d48218

                                • memory/2904-12-0x0000000074440000-0x00000000749EB000-memory.dmp

                                  Filesize

                                  5.7MB

                                • memory/2904-0-0x0000000074441000-0x0000000074442000-memory.dmp

                                  Filesize

                                  4KB

                                • memory/2904-2-0x0000000074440000-0x00000000749EB000-memory.dmp

                                  Filesize

                                  5.7MB

                                • memory/2904-1-0x0000000074440000-0x00000000749EB000-memory.dmp

                                  Filesize

                                  5.7MB

                                • memory/2988-17-0x0000000074440000-0x00000000749EB000-memory.dmp

                                  Filesize

                                  5.7MB

                                • memory/2988-14-0x0000000074440000-0x00000000749EB000-memory.dmp

                                  Filesize

                                  5.7MB

                                • memory/2988-11-0x0000000074440000-0x00000000749EB000-memory.dmp

                                  Filesize

                                  5.7MB

                                • memory/2988-13-0x0000000074440000-0x00000000749EB000-memory.dmp

                                  Filesize

                                  5.7MB