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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/10/2024, 05:17

General

  • Target

    4f828f95c11479c61692052d9254022a.exe

  • Size

    404KB

  • MD5

    4f828f95c11479c61692052d9254022a

  • SHA1

    68f1fbe839f2d41f434bdde176ccc3e6f38ec503

  • SHA256

    00c39991e9994d94f4fc657f7072c7e4137baf5aa27961cf5451daf6b3cda75a

  • SHA512

    91cc6dc01a62337c542c31337057653c5e41ae7b88621bc1041786a260a5b78fb834869ce8aeca05ab8263c45a41fa7833ee262440d157206b1ddae675d814f5

  • SSDEEP

    12288:V/Cb1GLhpCd9pwh7vCOT1VVx3nH8fwxa/bEO:VD6MPTHVRPxqt

Malware Config

Extracted

Family

vidar

Version

11

Botnet

8b4d47586874b08947203f03e4db3962

C2

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Extracted

Family

lumma

Extracted

Family

stealc

Botnet

default

C2

http://46.8.231.109

Attributes
  • url_path

    /c4754d4f680ead72.php

Extracted

Family

lumma

C2

https://underlinemdsj.site/api

https://offeviablwke.site/api

Signatures

  • Detect Vidar Stealer 21 IoCs
  • Lumma Stealer, LummaC

    Lumma or LummaC is an infostealer written in C++ first seen in August 2022.

  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 6 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 16 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4f828f95c11479c61692052d9254022a.exe
    "C:\Users\Admin\AppData\Local\Temp\4f828f95c11479c61692052d9254022a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2576
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Checks computer location settings
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2944
      • C:\ProgramData\GDBFBFCBFB.exe
        "C:\ProgramData\GDBFBFCBFB.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2172
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1600
      • C:\ProgramData\GCGHIIDHCG.exe
        "C:\ProgramData\GCGHIIDHCG.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3228
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          PID:3308
      • C:\ProgramData\KFIJEGCBGI.exe
        "C:\ProgramData\KFIJEGCBGI.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2880
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
            PID:1344
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            4⤵
              PID:4640
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
              4⤵
              • Checks computer location settings
              • Loads dropped DLL
              • System Location Discovery: System Language Discovery
              • Checks processor information in registry
              PID:4024
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\AdminECBGIEHDBA.exe"
                5⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:2364
                • C:\Users\AdminECBGIEHDBA.exe
                  "C:\Users\AdminECBGIEHDBA.exe"
                  6⤵
                  • Suspicious use of SetThreadContext
                  • System Location Discovery: System Language Discovery
                  PID:4784
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Checks processor information in registry
                    • Suspicious behavior: EnumeratesProcesses
                    PID:2508
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\AdminGDGHIDBKJE.exe"
                5⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:3556
                • C:\Users\AdminGDGHIDBKJE.exe
                  "C:\Users\AdminGDGHIDBKJE.exe"
                  6⤵
                  • Suspicious use of SetThreadContext
                  • System Location Discovery: System Language Discovery
                  PID:3156
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                    7⤵
                      PID:2556
                    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                      7⤵
                      • System Location Discovery: System Language Discovery
                      PID:4048
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\GDGHIDBKJEGI" & exit
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:3548
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 10
                4⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:4184

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\ProgramData\EBAAFCAFCBKF\IIEHJK

          Filesize

          160KB

          MD5

          f310cf1ff562ae14449e0167a3e1fe46

          SHA1

          85c58afa9049467031c6c2b17f5c12ca73bb2788

          SHA256

          e187946249cd390a3c1cf5d4e3b0d8f554f9acdc416bf4e7111fff217bb08855

          SHA512

          1196371de08c964268c44103ccaed530bda6a145df98e0f480d8ee5ad58cb6fb33ca4c9195a52181fe864726dcf52e6a7a466d693af0cda43400a3a7ef125fad

        • C:\ProgramData\GCGHIIDHCG.exe

          Filesize

          404KB

          MD5

          4f828f95c11479c61692052d9254022a

          SHA1

          68f1fbe839f2d41f434bdde176ccc3e6f38ec503

          SHA256

          00c39991e9994d94f4fc657f7072c7e4137baf5aa27961cf5451daf6b3cda75a

          SHA512

          91cc6dc01a62337c542c31337057653c5e41ae7b88621bc1041786a260a5b78fb834869ce8aeca05ab8263c45a41fa7833ee262440d157206b1ddae675d814f5

        • C:\ProgramData\GDBFBFCBFB.exe

          Filesize

          372KB

          MD5

          8a73502b83ceb6b31b9fefb595876844

          SHA1

          41094748fdc11cd79057c14c39210d6833a25323

          SHA256

          af60c2dd60ece7f8e83870b22b1c5c0e095c9c3669171c16eaaff406cda6eeb2

          SHA512

          e5bf9b9b78c8306c13df04db83bbe4c76f0914fffde4bd584a5b96da5150102167df61b1315382a5af68038c2d3cdbd2e2414082659757c402979d3c3772b82c

        • C:\ProgramData\KFIJEGCBGI.exe

          Filesize

          327KB

          MD5

          dfd49d1326704cfeee9852999782e4b6

          SHA1

          4bd1c441c55ec55a1cac7ca2bfe786a739cb01a4

          SHA256

          2280a0c18708cb5fd0e093e2f42350e3afb8f3ca31fd3279fc797a6c535532ef

          SHA512

          fe9e9537f76bf36b6e6abd340ef135d5d017bb2b067239f6871f5a8952d2a5b823dd89838b8d31a928b40a1a70bd83010e5f3f49905672fbcd74b763d65504bf

        • C:\ProgramData\KJDAECAEBKJJ\CBFBKF

          Filesize

          20KB

          MD5

          a603e09d617fea7517059b4924b1df93

          SHA1

          31d66e1496e0229c6a312f8be05da3f813b3fa9e

          SHA256

          ccd15f9c7a997ae2b5320ea856c7efc54b5055254d41a443d21a60c39c565cb7

          SHA512

          eadb844a84f8a660c578a2f8e65ebcb9e0b9ab67422be957f35492ff870825a4b363f96fd1c546eaacfd518f6812fcf57268ef03c149e5b1a7af145c7100e2cc

        • C:\ProgramData\mozglue.dll

          Filesize

          593KB

          MD5

          c8fd9be83bc728cc04beffafc2907fe9

          SHA1

          95ab9f701e0024cedfbd312bcfe4e726744c4f2e

          SHA256

          ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

          SHA512

          fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

        • C:\ProgramData\nss3.dll

          Filesize

          2.0MB

          MD5

          1cc453cdf74f31e4d913ff9c10acdde2

          SHA1

          6e85eae544d6e965f15fa5c39700fa7202f3aafe

          SHA256

          ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

          SHA512

          dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\EDC238BFF48A31D55A97E1E93892934B_C31B2498754E340573F1336DE607D619

          Filesize

          471B

          MD5

          53531d3b1632c42fbb5282b61f41eb70

          SHA1

          3e57dd0a3966162c6bf62d02cef4abcff03c1159

          SHA256

          b949b4e92e2803878a2b71476a58d2cbfd53c95ab7bb1583ce4e77398f135105

          SHA512

          60d25185037c526ac8a8c928891c2ea5fe3a5d8d24fd536b36bdaea07953350aa25c45038c5b0db4166912da3ea502a959dd4de7dd6f602d2d6cdd1d349c73b0

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\EDC238BFF48A31D55A97E1E93892934B_C31B2498754E340573F1336DE607D619

          Filesize

          400B

          MD5

          68365ba8473db33de99a52f81876be04

          SHA1

          d774b07cbaa9061c4b4e6e1039c6a8f43830e6ea

          SHA256

          e2da1790380d4549774fa26ed6041c40481d9a1460faba9d25d14bfac86fe6be

          SHA512

          1ad9d311adcc6b99936e8392a49a9b6c67ceb7a4cb25aefcd40e663f05338af021ec1b4edb51ec78dbc2379b4d1187c5bee788f02edae5d70922ba3a981b7708

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\AdminECBGIEHDBA.exe.log

          Filesize

          425B

          MD5

          4eaca4566b22b01cd3bc115b9b0b2196

          SHA1

          e743e0792c19f71740416e7b3c061d9f1336bf94

          SHA256

          34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

          SHA512

          bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\JACP9GNT\76561199780418869[1].htm

          Filesize

          33KB

          MD5

          438c4136196541b34a4117c6620b0874

          SHA1

          6a7ee3c4dc3706863eac4da508f859c0a81a199c

          SHA256

          4ef2838d70b762fe1e472a0b3b5128d920771ad10b11b69e40bcfe30661606c6

          SHA512

          696ee2a81583f53aebbe5636b2aa6cd5b55bfc50c379a720c2690ef1cd64a9f11e8bdba2a04181571fef579dfafa3bce845fe9081134d800b45450a60eb78332

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\JSDV0W5M\76561199780418869[1].htm

          Filesize

          33KB

          MD5

          62b5f0f89bab8b152b34421e18dd9a46

          SHA1

          1101e79e70028efb8197969dddf6797198f1e8a5

          SHA256

          87ddacd9d8efa78d41c3128bf9743dff8a0131183e36842c9a08b020e352bd95

          SHA512

          4c4df2f0dae439403bf84252383aa5013816d2b3e4a1728673b652e9062f8262ddf9681471c4db8b7427540bf8f8057128a61316859d7fa96c92d72f3db8d3b7

        • memory/1600-119-0x0000000000400000-0x0000000000463000-memory.dmp

          Filesize

          396KB

        • memory/1600-123-0x0000000000400000-0x0000000000463000-memory.dmp

          Filesize

          396KB

        • memory/1600-121-0x0000000000400000-0x0000000000463000-memory.dmp

          Filesize

          396KB

        • memory/2172-104-0x00000000731A0000-0x0000000073950000-memory.dmp

          Filesize

          7.7MB

        • memory/2172-103-0x00000000008D0000-0x0000000000930000-memory.dmp

          Filesize

          384KB

        • memory/2172-102-0x00000000731AE000-0x00000000731AF000-memory.dmp

          Filesize

          4KB

        • memory/2172-124-0x00000000731A0000-0x0000000073950000-memory.dmp

          Filesize

          7.7MB

        • memory/2508-191-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2508-206-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2508-207-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2508-190-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2508-192-0x000000001FCA0000-0x000000001FEFF000-memory.dmp

          Filesize

          2.4MB

        • memory/2576-1-0x0000000000F30000-0x0000000000F98000-memory.dmp

          Filesize

          416KB

        • memory/2576-0-0x000000007524E000-0x000000007524F000-memory.dmp

          Filesize

          4KB

        • memory/2576-2-0x0000000075240000-0x00000000759F0000-memory.dmp

          Filesize

          7.7MB

        • memory/2576-6-0x0000000075240000-0x00000000759F0000-memory.dmp

          Filesize

          7.7MB

        • memory/2576-7-0x0000000075240000-0x00000000759F0000-memory.dmp

          Filesize

          7.7MB

        • memory/2880-138-0x00000000003F0000-0x0000000000446000-memory.dmp

          Filesize

          344KB

        • memory/2944-38-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-37-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-4-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-87-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-80-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-79-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-11-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-9-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-20-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-21-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-55-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-22-0x00000000226C0000-0x000000002291F000-memory.dmp

          Filesize

          2.4MB

        • memory/2944-54-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/2944-88-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3308-173-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3308-172-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3308-158-0x00000000223A0000-0x00000000225FF000-memory.dmp

          Filesize

          2.4MB

        • memory/3308-157-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/3308-154-0x0000000000400000-0x0000000000676000-memory.dmp

          Filesize

          2.5MB

        • memory/4024-148-0x0000000000400000-0x0000000000661000-memory.dmp

          Filesize

          2.4MB