Analysis

  • max time kernel
    777s
  • max time network
    899s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250207-en
  • resource tags

    arch:x64arch:x86image:win11-20250207-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    09/02/2025, 01:45

General

  • Target

    UpdaterTag.dll

  • Size

    72KB

  • MD5

    baff48ded319cdc1eb2372e16c833260

  • SHA1

    6ffbbee909e8225337a61da43f18d48bd403b32d

  • SHA256

    16bf1c6d22074a7532c158c0f8ffd7f1e1c36deab934ea5abad5c0d2cea11a62

  • SHA512

    ce560c27b4403ba9e9b14a7398e469e6fc42f79b70586266ae2d2b2210a9f81ea88e92a6f50b077e8480bc5fa9117d64acf1a6b3b3530807bd1534e5aac2cce6

  • SSDEEP

    768:Tz7vRTYS4Oi5ONdWJ7HRCRuVnxsaQu7SDqRefml4I4QDqauXj57CHf8IdAtY5h82:Tzh7eO6hHRCSsBfml4I6z5If8I6oVTt

Malware Config

Extracted

Family

latrodectus

Version

1.4

C2

https://apworsindos.com/test/

https://reminasolirol.com/test/

Attributes
  • group

    Mimikast

  • user_agent

    Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Tob 1.1)

aes.hex

Signatures

  • Detects Latrodectus 2 IoCs

    Detects Latrodectus v1.4.

  • Latrodectus family
  • Latrodectus loader

    Latrodectus is a loader written in C++.

  • Blocklisted process makes network request 2 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 3 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 7 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of WriteProcessMemory 2 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:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\UpdaterTag.dll,#1
    1⤵
    • Deletes itself
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:3228
    • C:\Windows\system32\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_e243117.dll", #1
      2⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:2892
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --string-annotations --always-read-main-dll --field-trial-handle=4600,i,2361095553525280809,4053893369775997324,262144 --variations-seed-version --mojo-platform-channel-handle=3572 /prefetch:14
    1⤵
      PID:1364
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PG9lbSBwcm9kdWN0X21hbnVmYWN0dXJlcj0iIiBwcm9kdWN0X25hbWU9IiIvPjxleHAgZXRhZz0iJnF1b3Q7RSt4YkF6Nlk2c1UxMjg5YlM2cWw0VlJMYmtqZkJVR1RNSnNqckhyNDRpST0mcXVvdDsiLz48YXBwIGFwcGlkPSJ7OEE2OUQzNDUtRDU2NC00NjNjLUFGRjEtQTY5RDlFNTMwRjk2fSIgdmVyc2lvbj0iMTIzLjAuNjMxMi4xMjMiIG5leHR2ZXJzaW9uPSIiIGxhbmc9ImVuIiBicmFuZD0iR0dMUyIgY2xpZW50PSIiIGluc3RhbGxhZ2U9IjEiIGluc3RhbGxkYXRldGltZT0iMTczODk1NjQ2OSIgb29iZV9pbnN0YWxsX3RpbWU9IjEzMzgzNDI5MTM1MzQ4MDAwMCI-PGV2ZW50IGV2ZW50dHlwZT0iMzEiIGV2ZW50cmVzdWx0PSIxIiBlcnJvcmNvZGU9IjAiIGV4dHJhY29kZTE9IjIxNzk4NjIiIHN5c3RlbV91cHRpbWVfdGlja3M9IjU1NTM5MjQ4MjMiLz48L2FwcD48L3JlcXVlc3Q-
      1⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      PID:3908
    • C:\Windows\SysWOW64\wermgr.exe
      "C:\Windows\system32\wermgr.exe" "-outproc" "0" "5816" "1268" "1148" "1272" "0" "0" "0" "0" "0" "0" "0" "0"
      1⤵
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Enumerates system info in registry
      PID:2356
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48cmVxdWVzdCBwcm90b2NvbD0iMy4wIiB1cGRhdGVyPSJPbWFoYSIgdXBkYXRlcnZlcnNpb249IjEuMy4xOTUuNDMiIHNoZWxsX3ZlcnNpb249IjEuMy4xOTUuNDMiIGlzbWFjaGluZT0iMSIgc2Vzc2lvbmlkPSJ7NkNFREJGNDAtMkEwQS00NUEyLUE3NkQtQ0ZDRkMzMDQ4RUNCfSIgdXNlcmlkPSJ7MzJDMDgzNEQtMjkxNC00Qzk0LUFBMzAtRUY5RkJFQTM1MDZBfSIgaW5zdGFsbHNvdXJjZT0ic2NoZWR1bGVyIiByZXF1ZXN0aWQ9Ins5MDgzMDBERC1BRkRELTQ2OUYtQjU0OC04MzM5Q0ExRkY1MEN9IiBkZWR1cD0iY3IiIGRvbWFpbmpvaW5lZD0iMCI-PGh3IGxvZ2ljYWxfY3B1cz0iMiIgcGh5c21lbW9yeT0iNCIgZGlza190eXBlPSIyIiBzc2U9IjEiIHNzZTI9IjEiIHNzZTM9IjEiIHNzc2UzPSIxIiBzc2U0MT0iMSIgc3NlNDI9IjEiIGF2eD0iMSIvPjxvcyBwbGF0Zm9ybT0id2luIiB2ZXJzaW9uPSIxMC4wLjIyMDAwLjQ5MyIgc3A9IiIgYXJjaD0ieDY0IiBwcm9kdWN0X3R5cGU9IjQ4IiBpc193aXA9IjAiIGlzX2luX2xvY2tkb3duX21vZGU9IjAiLz48b2VtIHByb2R1Y3RfbWFudWZhY3R1cmVyPSIiIHByb2R1Y3RfbmFtZT0iIi8-PGV4cCBldGFnPSImcXVvdDtWUFFvUDFGK2ZxMTV3UnpoMWtQTDRQTXBXaDhPUk1CNWl6dnJPQy9jaGpRPSZxdW90OyIvPjxhcHAgYXBwaWQ9Ins1NkVCMThGOC1CMDA4LTRDQkQtQjZEMi04Qzk3RkU3RTkwNjJ9IiB2ZXJzaW9uPSIxMzMuMC4zMDY1LjUxIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSIiIGJyYW5kPSJJTkJYIiBjbGllbnQ9IiIgaW5zdGFsbGFnZT0iMSIgaW5zdGFsbGRhdGV0aW1lPSIxNzM4OTU1OTg2Ij48ZXZlbnQgZXZlbnR0eXBlPSIzMiIgZXZlbnRyZXN1bHQ9IjEiIGVycm9yY29kZT0iMCIgZXh0cmFjb2RlMT0iNCIgc3lzdGVtX3VwdGltZV90aWNrcz0iNTU2NTc5OTg5NCIvPjwvYXBwPjwvcmVxdWVzdD4
      1⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      PID:1960
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48cmVxdWVzdCBwcm90b2NvbD0iMy4wIiB1cGRhdGVyPSJPbWFoYSIgdXBkYXRlcnZlcnNpb249IjEuMy4xOTUuNDMiIHNoZWxsX3ZlcnNpb249IjEuMy4xOTUuNDMiIGlzbWFjaGluZT0iMSIgc2Vzc2lvbmlkPSJ7NkNFREJGNDAtMkEwQS00NUEyLUE3NkQtQ0ZDRkMzMDQ4RUNCfSIgdXNlcmlkPSJ7MzJDMDgzNEQtMjkxNC00Qzk0LUFBMzAtRUY5RkJFQTM1MDZBfSIgaW5zdGFsbHNvdXJjZT0ic2NoZWR1bGVyIiByZXF1ZXN0aWQ9IntEQUE2MTlFQi1CQUVBLTQzQ0UtOTQ3QS02N0ZCOUMxRTE0NzJ9IiBkZWR1cD0iY3IiIGRvbWFpbmpvaW5lZD0iMCI-PGh3IGxvZ2ljYWxfY3B1cz0iMiIgcGh5c21lbW9yeT0iNCIgZGlza190eXBlPSIyIiBzc2U9IjEiIHNzZTI9IjEiIHNzZTM9IjEiIHNzc2UzPSIxIiBzc2U0MT0iMSIgc3NlNDI9IjEiIGF2eD0iMSIvPjxvcyBwbGF0Zm9ybT0id2luIiB2ZXJzaW9uPSIxMC4wLjIyMDAwLjQ5MyIgc3A9IiIgYXJjaD0ieDY0IiBwcm9kdWN0X3R5cGU9IjQ4IiBpc193aXA9IjAiIGlzX2luX2xvY2tkb3duX21vZGU9IjAiLz48b2VtIHByb2R1Y3RfbWFudWZhY3R1cmVyPSIiIHByb2R1Y3RfbmFtZT0iIi8-PGV4cCBldGFnPSImcXVvdDtWUFFvUDFGK2ZxMTV3UnpoMWtQTDRQTXBXaDhPUk1CNWl6dnJPQy9jaGpRPSZxdW90OyIvPjxhcHAgYXBwaWQ9IntGM0M0RkUwMC1FRkQ1LTQwM0ItOTU2OS0zOThBMjBGMUJBNEF9IiB2ZXJzaW9uPSIxLjMuMTk1LjQzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSIiIGJyYW5kPSJJTkJYIiBjbGllbnQ9IiIgaW5zdGFsbGFnZT0iMSIgY29ob3J0PSJycmZAMC42MCI-PHVwZGF0ZWNoZWNrLz48cGluZyByPSIyIiByZD0iNjYxMiIgcGluZ19mcmVzaG5lc3M9IntFRTgzQjkzNS0yMTBGLTRFNzktOTg3OS02MTAzNjcwMTFGRTV9Ii8-PC9hcHA-PGFwcCBhcHBpZD0iezU2RUIxOEY4LUIwMDgtNENCRC1CNkQyLThDOTdGRTdFOTA2Mn0iIHZlcnNpb249IjEzMy4wLjMwNjUuNTEiIG5leHR2ZXJzaW9uPSIiIGxhbmc9IiIgYnJhbmQ9IklOQlgiIGNsaWVudD0iIiBleHBlcmltZW50cz0iY29uc2VudD1mYWxzZSIgaW5zdGFsbGFnZT0iMSIgY29ob3J0PSJycmZAMC44NSIgb29iZV9pbnN0YWxsX3RpbWU9IjE4NDQ2NzQ0MDczNzA5NTUxNjA2IiB1cGRhdGVfY291bnQ9IjEiIGxhc3RfbGF1bmNoX2NvdW50PSIxIiBsYXN0X2xhdW5jaF90aW1lPSIxMzM4MzQzMjQ1MjMyNTIzMDAiPjx1cGRhdGVjaGVjay8-PHBpbmcgYWN0aXZlPSIxIiBhPSIyIiByPSIyIiBhZD0iNjYxMiIgcmQ9IjY2MTIiIHBpbmdfZnJlc2huZXNzPSJ7MUJEQjBFOUUtOUMzQy00MDMwLTlEMjEtNkNDREQxMTlEMkFBfSIvPjwvYXBwPjxhcHAgYXBwaWQ9IntGMzAxNzIyNi1GRTJBLTQyOTUtOEJERi0wMEMzQTlBN0U0QzV9IiB2ZXJzaW9uPSIxMzIuMC4yOTU3LjE0MCIgbmV4dHZlcnNpb249IiIgbGFuZz0iIiBicmFuZD0iSU5CWCIgY2xpZW50PSIiIGluc3RhbGxhZ2U9IjEiIGNvaG9ydD0icnJmQDAuNDMiIHVwZGF0ZV9jb3VudD0iMSI-PHVwZGF0ZWNoZWNrLz48cGluZyByPSIyIiByZD0iNjYxMiIgcGluZ19mcmVzaG5lc3M9InswNzM0NEQxMi1BNEY0LTQ4OTQtQkM3My00QkZEQzBFNkJDQzF9Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
      1⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      PID:1220
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --string-annotations --always-read-main-dll --field-trial-handle=4380,i,2361095553525280809,4053893369775997324,262144 --variations-seed-version --mojo-platform-channel-handle=3904 /prefetch:14
      1⤵
        PID:1244
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --string-annotations --always-read-main-dll --field-trial-handle=4120,i,2361095553525280809,4053893369775997324,262144 --variations-seed-version --mojo-platform-channel-handle=2960 /prefetch:14
        1⤵
          PID:1192
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --string-annotations --always-read-main-dll --field-trial-handle=5600,i,2361095553525280809,4053893369775997324,262144 --variations-seed-version --mojo-platform-channel-handle=5524 /prefetch:14
          1⤵
            PID:2884
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --string-annotations --always-read-main-dll --field-trial-handle=4064,i,2361095553525280809,4053893369775997324,262144 --variations-seed-version --mojo-platform-channel-handle=3776 /prefetch:14
            1⤵
              PID:4412
            • C:\Windows\system32\rundll32.exe
              rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_e243117.dll", #1
              1⤵
              • Loads dropped DLL
              PID:4332
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --string-annotations --always-read-main-dll --field-trial-handle=5604,i,2361095553525280809,4053893369775997324,262144 --variations-seed-version --mojo-platform-channel-handle=4384 /prefetch:14
              1⤵
                PID:5160
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --string-annotations --always-read-main-dll --field-trial-handle=4300,i,2361095553525280809,4053893369775997324,262144 --variations-seed-version --mojo-platform-channel-handle=5640 /prefetch:14
                1⤵
                  PID:4116
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --string-annotations --always-read-main-dll --field-trial-handle=4392,i,2361095553525280809,4053893369775997324,262144 --variations-seed-version --mojo-platform-channel-handle=5580 /prefetch:14
                  1⤵
                    PID:1404
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --string-annotations --always-read-main-dll --field-trial-handle=3820,i,2361095553525280809,4053893369775997324,262144 --variations-seed-version --mojo-platform-channel-handle=3776 /prefetch:14
                    1⤵
                      PID:2980
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --string-annotations --always-read-main-dll --field-trial-handle=4340,i,2361095553525280809,4053893369775997324,262144 --variations-seed-version --mojo-platform-channel-handle=5632 /prefetch:14
                      1⤵
                        PID:3108

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\ProgramData\Microsoft\EdgeUpdate\Log\MicrosoftEdgeUpdate.log

                        Filesize

                        351KB

                        MD5

                        800828f31b41fbc267ca96010f10cad2

                        SHA1

                        0e71916a2bad4a0b8d00e54db61850370c649c09

                        SHA256

                        0df3a3769983e1029c2a7e6776d6b4db57ee2d422811892c55c9f58780bc0411

                        SHA512

                        08a92dff712a9b2b0494015c2b78892716e3ce1653d04d978ea3dae53c5581d6e12b84e03c157e3e4c11366177643874711d8d5f95d957d1e71bbd8f4a4c949b

                      • C:\ProgramData\Microsoft\EdgeUpdate\Log\MicrosoftEdgeUpdate.log

                        Filesize

                        376KB

                        MD5

                        a1fa61d593826157820979e3624d8be2

                        SHA1

                        468a9d1f27d849996ed4b315e95d08c9e995baa1

                        SHA256

                        8e89b98f39934b9586125253a0f503343cca2ab0de7df01a41af0b798ece64ba

                        SHA512

                        c0c826425c385e278f4ca45e509550938dfa84e80513c99a16e203b5a169e345dee010ff233da9ddea37c97cce65dfbd13585c4bbaedc2f11f98953d749d8e45

                      • C:\Users\Admin\AppData\Roaming\Custom_update\Update_e243117.dll

                        Filesize

                        72KB

                        MD5

                        baff48ded319cdc1eb2372e16c833260

                        SHA1

                        6ffbbee909e8225337a61da43f18d48bd403b32d

                        SHA256

                        16bf1c6d22074a7532c158c0f8ffd7f1e1c36deab934ea5abad5c0d2cea11a62

                        SHA512

                        ce560c27b4403ba9e9b14a7398e469e6fc42f79b70586266ae2d2b2210a9f81ea88e92a6f50b077e8480bc5fa9117d64acf1a6b3b3530807bd1534e5aac2cce6

                      • memory/3228-1-0x00007FFA4EAA0000-0x00007FFA4EAB6000-memory.dmp

                        Filesize

                        88KB