Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19/09/2024, 21:37

General

  • Target

    731b961a706aed56f7e1df7d9fc37b8a0624d1f97f1809d9dd47f8edf1242a37.exe

  • Size

    218KB

  • MD5

    96167bcbc4c7fcd5bb9dd87657f84002

  • SHA1

    276077fdb30a363a8883d1359e100b068660abb2

  • SHA256

    731b961a706aed56f7e1df7d9fc37b8a0624d1f97f1809d9dd47f8edf1242a37

  • SHA512

    675c17a20ad077dfd5dac0db872f722cf7f7e4a306275d2a094928476a6dc301909dac49f5ac575d6581e6a3061f5fa08ab29538a595d5d6c210049bdefee731

  • SSDEEP

    6144:yEQBDdO1z7L/EIhZDE9oLfFWlMZT7+DGaMwIC:yEGDdQNHEwWlMxYG/wI

Malware Config

Extracted

Family

simda

Attributes
  • dga

    gatyfus.com

    lyvyxor.com

    vojyqem.com

    qetyfuv.com

    puvyxil.com

    gahyqah.com

    lyryfyd.com

    vocyzit.com

    qegyqaq.com

    purydyv.com

    gacyzuz.com

    lygymoj.com

    vowydef.com

    qexylup.com

    pufymoq.com

    gaqydeb.com

    lyxylux.com

    vofymik.com

    qeqysag.com

    puzylyp.com

    gadyniw.com

    lymysan.com

    volykyc.com

    qedynul.com

    pumypog.com

    galykes.com

    lysynur.com

    vonypom.com

    qekykev.com

    pupybul.com

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • simda

    Simda is an infostealer written in C++.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies WinLogon 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\731b961a706aed56f7e1df7d9fc37b8a0624d1f97f1809d9dd47f8edf1242a37.exe
    "C:\Users\Admin\AppData\Local\Temp\731b961a706aed56f7e1df7d9fc37b8a0624d1f97f1809d9dd47f8edf1242a37.exe"
    1⤵
    • Loads dropped DLL
    • Modifies WinLogon
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:1304
    • C:\Windows\apppatch\svchost.exe
      "C:\Windows\apppatch\svchost.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Modifies WinLogon
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1192

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\1LNUKNV0\login[2].htm

          Filesize

          168B

          MD5

          d57e3a550060f85d44a175139ea23021

          SHA1

          2c5cb3428a322c9709a34d04dd86fe7628f8f0a6

          SHA256

          43edf068d34276e8ade4113d4d7207de19fc98a2ae1c07298e593edae2a8774c

          SHA512

          0364fe6a010fce7a3f4a6344c84468c64b20fd131f3160fc649db78f1075ba52d8a1c4496e50dbe27c357e01ee52e94cdcda8f7927cba28d5f2f45b9da690063

        • C:\Users\Admin\AppData\Local\Temp\179.tmp

          Filesize

          24KB

          MD5

          22e3a7e493df1b5d87124fdc19a46195

          SHA1

          9b5f798da750dcf34f29cbf992dfb8318353005b

          SHA256

          2f01ece6fec327b4bdefbbb9e4a495161430be505f6108ec54bfb6af2cef0b7b

          SHA512

          9dda975dab659f33e795a63ceb6c5bd8d19dcf919137b17b26b8e7c6d1c438da111b58c9b4ae93b7737593695825394f7f5c2ae031ede5a0ab3e26198c1028b7

        • C:\Users\Admin\AppData\Local\Temp\18C.tmp

          Filesize

          41KB

          MD5

          0b1700ca7df8275569f7fdbc8713e5f7

          SHA1

          b60d23acfa8c13683adbe95eba445926ce109865

          SHA256

          1539c2f63a9d4c05c0758ca4e576bd20228bbc9a319e068264d80e325d2aa3a2

          SHA512

          061e283391a5330e0391f3c550cb65da3e6d88390f9d70c07252e7d259f1471daa197ebf0f0b41769e0dba80fd5110f3ccec4d17d91aec2ca66a4d2c8db745e4

        • C:\Users\Admin\AppData\Local\Temp\98FF.tmp

          Filesize

          593B

          MD5

          926512864979bc27cf187f1de3f57aff

          SHA1

          acdeb9d6187932613c7fa08eaf28f0cd8116f4b5

          SHA256

          b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f

          SHA512

          f6f9fd3ca9305bec879cfcd38e64111a18e65e30d25c49e9f2cd546cbab9b2dcd03eca81952f6b77c0eaab20192ef7bef0d8d434f6f371811929e75f8620633b

        • \Windows\AppPatch\svchost.exe

          Filesize

          218KB

          MD5

          8750d98b0f582e7dedb78e3ab052e656

          SHA1

          1eb819c6a77dee7a6123054871679b279f79e04c

          SHA256

          e9820c3d9dfdc4eba57607502e22bab45d33f007cc4e51046033560c61b98b7f

          SHA512

          57c5f96b62b83e567ee883e6fa569797bcc0cd11b48766ae31a14834f9f894334404f20b85184b3db405e8044b608195476a80b3da56564ebd904bfea37773c7

        • memory/1192-68-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-55-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-32-0x0000000002400000-0x00000000024A8000-memory.dmp

          Filesize

          672KB

        • memory/1192-30-0x0000000002400000-0x00000000024A8000-memory.dmp

          Filesize

          672KB

        • memory/1192-33-0x0000000000400000-0x00000000006D0000-memory.dmp

          Filesize

          2.8MB

        • memory/1192-28-0x0000000002400000-0x00000000024A8000-memory.dmp

          Filesize

          672KB

        • memory/1192-24-0x0000000002400000-0x00000000024A8000-memory.dmp

          Filesize

          672KB

        • memory/1192-22-0x0000000002400000-0x00000000024A8000-memory.dmp

          Filesize

          672KB

        • memory/1192-34-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-36-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-38-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-46-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-40-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-59-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-84-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-83-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-82-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-81-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-80-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-79-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-78-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-76-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-75-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-74-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-73-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-72-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-71-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-70-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-69-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-17-0x0000000000400000-0x00000000006D0000-memory.dmp

          Filesize

          2.8MB

        • memory/1192-20-0x0000000000400000-0x00000000006D0000-memory.dmp

          Filesize

          2.8MB

        • memory/1192-64-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-67-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-66-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-63-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-62-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-60-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-58-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-57-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-56-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-65-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-54-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-53-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-52-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-51-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-50-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-49-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-48-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-47-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-45-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-44-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-43-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-42-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-77-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-41-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-61-0x0000000002680000-0x0000000002736000-memory.dmp

          Filesize

          728KB

        • memory/1192-26-0x0000000002400000-0x00000000024A8000-memory.dmp

          Filesize

          672KB

        • memory/1192-21-0x0000000000400000-0x00000000006D0000-memory.dmp

          Filesize

          2.8MB

        • memory/1304-1-0x0000000000220000-0x0000000000271000-memory.dmp

          Filesize

          324KB

        • memory/1304-0-0x0000000000400000-0x00000000006D0000-memory.dmp

          Filesize

          2.8MB

        • memory/1304-2-0x0000000000400000-0x000000000045F000-memory.dmp

          Filesize

          380KB

        • memory/1304-19-0x0000000000400000-0x000000000045F000-memory.dmp

          Filesize

          380KB

        • memory/1304-18-0x0000000000220000-0x0000000000271000-memory.dmp

          Filesize

          324KB

        • memory/1304-16-0x0000000000400000-0x00000000006D0000-memory.dmp

          Filesize

          2.8MB