Analysis

  • max time kernel
    298s
  • max time network
    300s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241211-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    03-01-2025 21:23

General

  • Target

    idk.exe

  • Size

    839KB

  • MD5

    50164ef17304f1f7c3629eb91e032d00

  • SHA1

    461db872921ccbb108e0e48ce75c370f420a001c

  • SHA256

    de0853a9548c4ee17f3f0bab331c38aced7feff18968aa3beb08fa8d3f6eeda4

  • SHA512

    355c9337247bcd7831c6576a6725473f21360dcb779313f1082bd59bbc089e4db0f32b8c3fc91efb5f3d76780a48edb84ecc0ac08f3fc43df8983f3b593c2ed3

  • SSDEEP

    24576:SmIS04YNEMuExDiU6E5R9s8xY/2l/detnIbt+rX:xQ4auS+UjfU2TedIbt+r

Malware Config

Extracted

Family

orcus

C2

/0.tcp.eu.ngrok.io:17906

Mutex

e98c39aba384472db49598b4cce744af

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

    01/03/2025 22:22:01

  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • 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.

  • Checks processor information in registry 2 TTPs 8 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 22 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 4 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\idk.exe
    "C:\Users\Admin\AppData\Local\Temp\idk.exe"
    1⤵
    • Checks computer location settings
    • Drops desktop.ini file(s)
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1312
    • 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:2920
  • C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3516
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe"
      2⤵
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4344
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=1968 -parentBuildID 20240401114208 -prefsHandle 1884 -prefMapHandle 1876 -prefsLen 23839 -prefMapSize 244658 -appDir "C:\Program Files\Mozilla Firefox\browser" - {55269abf-ddf1-4261-9358-03e44061d4ee} 4344 "\\.\pipe\gecko-crash-server-pipe.4344" gpu
        3⤵
          PID:1144
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=2360 -parentBuildID 20240401114208 -prefsHandle 2352 -prefMapHandle 2340 -prefsLen 23717 -prefMapSize 244658 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {75c94288-69bd-4f35-a90c-fc3671b8e396} 4344 "\\.\pipe\gecko-crash-server-pipe.4344" socket
          3⤵
            PID:3484
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=1392 -childID 1 -isForBrowser -prefsHandle 1528 -prefMapHandle 2900 -prefsLen 22652 -prefMapSize 244658 -jsInitHandle 1284 -jsInitLen 234952 -parentBuildID 20240401114208 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {af4dc026-dd45-4614-8bf2-aa489affb3df} 4344 "\\.\pipe\gecko-crash-server-pipe.4344" tab
            3⤵
              PID:1244
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=3912 -childID 2 -isForBrowser -prefsHandle 3908 -prefMapHandle 3904 -prefsLen 29091 -prefMapSize 244658 -jsInitHandle 1284 -jsInitLen 234952 -parentBuildID 20240401114208 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {ed41d65f-844b-463b-a7fb-dff305c84d2f} 4344 "\\.\pipe\gecko-crash-server-pipe.4344" tab
              3⤵
                PID:4364
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=4784 -parentBuildID 20240401114208 -sandboxingKind 0 -prefsHandle 4872 -prefMapHandle 4820 -prefsLen 29091 -prefMapSize 244658 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {2f36297a-80cf-4b7c-859e-387426edaee4} 4344 "\\.\pipe\gecko-crash-server-pipe.4344" utility
                3⤵
                • Checks processor information in registry
                PID:3476
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=5348 -childID 3 -isForBrowser -prefsHandle 5264 -prefMapHandle 5268 -prefsLen 27097 -prefMapSize 244658 -jsInitHandle 1284 -jsInitLen 234952 -parentBuildID 20240401114208 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {62bec9d2-169a-4a0b-b5ab-a940b40b62fe} 4344 "\\.\pipe\gecko-crash-server-pipe.4344" tab
                3⤵
                  PID:4520
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=5464 -childID 4 -isForBrowser -prefsHandle 5472 -prefMapHandle 5356 -prefsLen 27097 -prefMapSize 244658 -jsInitHandle 1284 -jsInitLen 234952 -parentBuildID 20240401114208 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {6224437b-5211-4161-a085-0f697e05f682} 4344 "\\.\pipe\gecko-crash-server-pipe.4344" tab
                  3⤵
                    PID:1848
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=5656 -childID 5 -isForBrowser -prefsHandle 5736 -prefMapHandle 5732 -prefsLen 27097 -prefMapSize 244658 -jsInitHandle 1284 -jsInitLen 234952 -parentBuildID 20240401114208 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {133b4695-7d58-4e3b-a2a9-d804a300e533} 4344 "\\.\pipe\gecko-crash-server-pipe.4344" tab
                    3⤵
                      PID:4308

                Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\9enwga8g.default-release\activity-stream.discovery_stream.json

                  Filesize

                  21KB

                  MD5

                  1411eb4dadc6f942320e5dc2756f627b

                  SHA1

                  5ba52d4dc0ea857a5354b38b25d134ff82029e98

                  SHA256

                  fa4e593e255b5d1522f65730d1c8e4d2ce0b6cece88739eddbc45287dac94b3a

                  SHA512

                  928d0637844a6f24b05669fdb290cfc5b0c0bebbe6c9bcedfda708ae9528efe5aa1e08bd7b65d31205fbf823abdec1a2337a2b0680b62057102a9e0bcd4ac9ef

                • C:\Users\Admin\AppData\Local\Temp\tmpaddon

                  Filesize

                  479KB

                  MD5

                  09372174e83dbbf696ee732fd2e875bb

                  SHA1

                  ba360186ba650a769f9303f48b7200fb5eaccee1

                  SHA256

                  c32efac42faf4b9878fb8917c5e71d89ff40de580c4f52f62e11c6cfab55167f

                  SHA512

                  b667086ed49579592d435df2b486fe30ba1b62ddd169f19e700cd079239747dd3e20058c285fa9c10a533e34f22b5198ed9b1f92ae560a3067f3e3feacc724f1

                • C:\Users\Admin\AppData\Local\Temp\tmpaddon-1

                  Filesize

                  13.8MB

                  MD5

                  0a8747a2ac9ac08ae9508f36c6d75692

                  SHA1

                  b287a96fd6cc12433adb42193dfe06111c38eaf0

                  SHA256

                  32d544baf2facc893057a1d97db33207e642f0dacf235d8500a0b5eff934ce03

                  SHA512

                  59521f8c61236641b3299ab460c58c8f5f26fa67e828de853c2cf372f9614d58b9f541aae325b1600ec4f3a47953caacb8122b0dfce7481acfec81045735947d

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

                  Filesize

                  839KB

                  MD5

                  50164ef17304f1f7c3629eb91e032d00

                  SHA1

                  461db872921ccbb108e0e48ce75c370f420a001c

                  SHA256

                  de0853a9548c4ee17f3f0bab331c38aced7feff18968aa3beb08fa8d3f6eeda4

                  SHA512

                  355c9337247bcd7831c6576a6725473f21360dcb779313f1082bd59bbc089e4db0f32b8c3fc91efb5f3d76780a48edb84ecc0ac08f3fc43df8983f3b593c2ed3

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\AlternateServices.bin

                  Filesize

                  8KB

                  MD5

                  28da6e974648b66fdc5e47599fd88796

                  SHA1

                  76383c4c763582b5081b99582143922cff5387a8

                  SHA256

                  0289132300a4507ec937db8542dfb2b18c75770f6f04865da96b03ca83ce0d27

                  SHA512

                  945ae576ed7ec6e5b82b02e1018ccf7f51e629d42bf8a84dd6d6540e7d33f38ac7fcebadf2505a3317d7d592c3f04e8c27fadaff69db547beb5e5c8c7fdcfb35

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\datareporting\glean\db\data.safe.tmp

                  Filesize

                  5KB

                  MD5

                  be85ad15f3b01d95452b29328d767921

                  SHA1

                  9018c2a26277c9729a0fb37f3884c9505ed824e1

                  SHA256

                  7450b5b00a6eec2646ca9118d80a1043bd87483bb565a0c60a1a8d5d34de24f6

                  SHA512

                  eca19ba5d35dd2e87521e41c72b0e083d73db5f4be64d23a8b0eb34679f1791b81436076ab4e1ea7adf3fa11dc60ee96cb836ef748a006cf3c74230c0e389f2e

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\datareporting\glean\db\data.safe.tmp

                  Filesize

                  6KB

                  MD5

                  1864c8d93b1eeba2d5c553f39aee2033

                  SHA1

                  65dd14e78bcc2d8f86dee1b060be8a72974abebd

                  SHA256

                  e7dff13f5fd1b79d8f4569605ba23b6a0708adb73e4bc9011b50a6e13211642b

                  SHA512

                  b0bf88eed351da14f2cc2f1ecfd406b5f6899f63225bf3c740ac371673b0f92339f623ba48029f38e319a53cc043fd2faf6ebc3c9c547aada1c23243c6e8383f

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\datareporting\glean\db\data.safe.tmp

                  Filesize

                  28KB

                  MD5

                  1293f6a8fef8bf4646cf646d974a5806

                  SHA1

                  1e3abd5df7e29c21eaec0909d4f8f52f41801dc0

                  SHA256

                  a252b5b17e98d48911371d45a46b86ec514e23c9ec1770d1633b4e642e7bd03e

                  SHA512

                  ab4faf8f369741db78315d70f8f772906d9507ab163e4109fcb05a24710c59e2184fbd1055f95aa28937bfea852a94e736285fc02ffc411eafb737559622a488

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\datareporting\glean\pending_pings\03fcbab2-8913-49eb-bf1c-d256a20f7dc1

                  Filesize

                  982B

                  MD5

                  de293751c6528ae3050b861f7f678d92

                  SHA1

                  0cbdfd9b9a080b9f8372c1fe66d0cea4a6931a5c

                  SHA256

                  532f5a7b8bbd98efa6745966e10057c4801312c3d508994f02d2b87b4107941d

                  SHA512

                  c2ac64791f42f53df2b46aae7925396493b9dec49ccf636392218de639986301962b4804cfe00d07dd5228c818a428a6ed316454ce09fbaa94b6588587242064

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\datareporting\glean\pending_pings\1a7bde19-aeea-4c54-975e-29e9e42994a9

                  Filesize

                  26KB

                  MD5

                  8225832d1ac22f971b7f4b8ba061c775

                  SHA1

                  02720cda23c129e16f79bd326173bc9c2dbfdaa4

                  SHA256

                  4b3f5366a58d7b370df66eb9a87e7577f3bfdba34d219845152b5d037ddce1bd

                  SHA512

                  57d54c6b86696ddef4cea54e075ca3ba4752be3289b864267ede8ab119b2b67d61ffcc6c1e7eac8b2af0ed2619dddb2518a2e8e7d868442d84d6ab2631d5a2e6

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\datareporting\glean\pending_pings\3efc56e1-cfd6-4a81-8ce7-5ec5b065248a

                  Filesize

                  671B

                  MD5

                  051f231f6ea5cd5e17087727e668553e

                  SHA1

                  e2418a3b664d9227ba686ae05615dff6ee282bfa

                  SHA256

                  7ed6aee54de5ad0e4da6a2e545d05639498a09c96a5734d3107a7eeee1b4cb5a

                  SHA512

                  ba33b505477877945d78c3f9fe4e8124f3192d4572f6357ac15e737df0c97a1383ecd7000064b966c7ad7fa63cf6f1c0bb95542bc7ee25eb65f49d50cb513f24

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\gmp-gmpopenh264\2.3.2\gmpopenh264.dll

                  Filesize

                  1.1MB

                  MD5

                  842039753bf41fa5e11b3a1383061a87

                  SHA1

                  3e8fe1d7b3ad866b06dca6c7ef1e3c50c406e153

                  SHA256

                  d88dd3bfc4a558bb943f3caa2e376da3942e48a7948763bf9a38f707c2cd0c1c

                  SHA512

                  d3320f7ac46327b7b974e74320c4d853e569061cb89ca849cd5d1706330aca629abeb4a16435c541900d839f46ff72dfde04128c450f3e1ee63c025470c19157

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\gmp-gmpopenh264\2.3.2\gmpopenh264.info

                  Filesize

                  116B

                  MD5

                  2a461e9eb87fd1955cea740a3444ee7a

                  SHA1

                  b10755914c713f5a4677494dbe8a686ed458c3c5

                  SHA256

                  4107f76ba1d9424555f4e8ea0acef69357dfff89dfa5f0ec72aa4f2d489b17bc

                  SHA512

                  34f73f7bf69d7674907f190f257516e3956f825e35a2f03d58201a5a630310b45df393f2b39669f9369d1ac990505a4b6849a0d34e8c136e1402143b6cedf2d3

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\gmp-widevinecdm\4.10.2710.0\manifest.json

                  Filesize

                  372B

                  MD5

                  bf957ad58b55f64219ab3f793e374316

                  SHA1

                  a11adc9d7f2c28e04d9b35e23b7616d0527118a1

                  SHA256

                  bbab6ca07edbed72a966835c7907b3e60c7aa3d48ddea847e5076bd05f4b1eda

                  SHA512

                  79c179b56e4893fb729b225818ab4b95a50b69666ac41d17aad0b37ab0ca8cd9f0848cbc3c5d9e69e4640a8b261d7ced592eae9bcb0e0b63c05a56e7c477f44e

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\gmp-widevinecdm\4.10.2710.0\widevinecdm.dll

                  Filesize

                  17.8MB

                  MD5

                  daf7ef3acccab478aaa7d6dc1c60f865

                  SHA1

                  f8246162b97ce4a945feced27b6ea114366ff2ad

                  SHA256

                  bc40c7821dcd3fea9923c6912ab1183a942c11b7690cfd79ed148ded0228777e

                  SHA512

                  5840a45cfdb12c005e117608b1e5d946e1b2e76443ed39ba940d7f56de4babeab09bee7e64b903eb82bb37624c0a0ef19e9b59fbe2ce2f0e0b1c7a6015a63f75

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\prefs-1.js

                  Filesize

                  10KB

                  MD5

                  9d0081ae236de18413f01032af36270e

                  SHA1

                  11d9ee457c35063b1e130225c0b17a2c2d08de10

                  SHA256

                  c4c759300efe24cb7d87eba1a88b92052616a57f6adaa7cae63bbee5c9173dcd

                  SHA512

                  f94952fa4b58991d2d9e21a858af18950009c97c9f7a49cd5a5895a5840300da90d9e6b9aedfb34e9550b8f02bd45a9d1d2faf4b91fcf395040a1e49ac65e9fd

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\prefs.js

                  Filesize

                  10KB

                  MD5

                  fed37409b08748269bf19a8ebbd3d95c

                  SHA1

                  bd175870c8b4e2a49beec370e54248d84c899f80

                  SHA256

                  81a67216ce78437507f5c67e3d26039c56882fa5df261e2f215b35a0a0624525

                  SHA512

                  0d2a398d5bd8cdd687fac5f79c4e62ad83ea6571a8b444e9a4f68a9510dd226334d72a8345b0d7c7f0264a820fc5ea965ba6c3734c90e0918b9da2c4e45d6d1e

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\prefs.js

                  Filesize

                  10KB

                  MD5

                  b9f26d6295c2fd5cbb505e550a77edf0

                  SHA1

                  2edcb957f31ebb4d69ffd9a57b539b3fa674ea72

                  SHA256

                  f346da82201456f9225fc3321180fc79d8d1adafb59a9a8140c029e2e2369933

                  SHA512

                  61e0a2591083e57e3cd887fc9fe9bd476d6604a87c6d73e155610aa20975db8965c56bb2ce9e267589651c9931f0f22a1893d03ad94a55eacf8927a25b9f7b95

                • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\9enwga8g.default-release\sessionstore-backups\recovery.baklz4

                  Filesize

                  1KB

                  MD5

                  bc90993fb7fe33b6faf01e76b32fb1eb

                  SHA1

                  06f74c5784077c8f5473368c3a5f3acfc3d52e4d

                  SHA256

                  121766c7078986d371390c3424b77273ca30a4b786d0f9027fdff11ff2689618

                  SHA512

                  1229ab656669bbcb3a7a6ae69be72e26c517a0b0703e6db7c025f43d0262492fae279d532209e40af89fdf03aa91d1cd151d65b56700b4015e9404bc0b9da98c

                • memory/1312-0-0x0000000074ED2000-0x0000000074ED3000-memory.dmp

                  Filesize

                  4KB

                • memory/1312-1-0x0000000074ED0000-0x0000000075481000-memory.dmp

                  Filesize

                  5.7MB

                • memory/1312-2-0x0000000074ED0000-0x0000000075481000-memory.dmp

                  Filesize

                  5.7MB

                • memory/1312-7-0x0000000074ED0000-0x0000000075481000-memory.dmp

                  Filesize

                  5.7MB

                • memory/2920-10-0x0000000074ED0000-0x0000000075481000-memory.dmp

                  Filesize

                  5.7MB

                • memory/2920-8-0x0000000074ED0000-0x0000000075481000-memory.dmp

                  Filesize

                  5.7MB

                • memory/2920-9-0x0000000074ED0000-0x0000000075481000-memory.dmp

                  Filesize

                  5.7MB

                • memory/2920-11-0x0000000074ED0000-0x0000000075481000-memory.dmp

                  Filesize

                  5.7MB