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Analysis

  • max time kernel
    110s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17/12/2024, 18:53

General

  • Target

    bf18a77cd2c55f13ff9eb448dc753e8c9831422121deec246f0e6e390ea25c9cN.exe

  • Size

    218KB

  • MD5

    2a8ba1afc71f6bf85fb5d4dc7b504280

  • SHA1

    26c69d2ff1d922d086626e61698a76030590bc42

  • SHA256

    bf18a77cd2c55f13ff9eb448dc753e8c9831422121deec246f0e6e390ea25c9c

  • SHA512

    c6460c10c9e87fb68bc2c54707130743a2ada8ee4b5b0a284a115d3d31365328e04e9a02ced3208e4fd63ee946d4aea4c0515baa3d25f2815b8394c2423cdf68

  • 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 family
  • 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\bf18a77cd2c55f13ff9eb448dc753e8c9831422121deec246f0e6e390ea25c9cN.exe
    "C:\Users\Admin\AppData\Local\Temp\bf18a77cd2c55f13ff9eb448dc753e8c9831422121deec246f0e6e390ea25c9cN.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:2276
    • 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:2672

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\1230.tmp

    Filesize

    1KB

    MD5

    df3878c2bf99d1d1333617016a3a8a88

    SHA1

    de79137d99358701ba569669e1cb676d3bbe60a9

    SHA256

    74f1a65ddd980028ef2e6f3d652c4052ac9929be2bc9f6ef122ba535821a3c57

    SHA512

    84a341225106f3b7526b4a2f5fbe83be20db529bbb891c3d679f12ef7282e22c8d575a1ec555e2932f94305eec38be802c78efba28b163039f03d2f490e69879

  • C:\Users\Admin\AppData\Local\Temp\5E69.tmp

    Filesize

    593B

    MD5

    926512864979bc27cf187f1de3f57aff

    SHA1

    acdeb9d6187932613c7fa08eaf28f0cd8116f4b5

    SHA256

    b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f

    SHA512

    f6f9fd3ca9305bec879cfcd38e64111a18e65e30d25c49e9f2cd546cbab9b2dcd03eca81952f6b77c0eaab20192ef7bef0d8d434f6f371811929e75f8620633b

  • C:\Users\Admin\AppData\Local\Temp\5E8A.tmp

    Filesize

    12KB

    MD5

    caa300673c11a7627a7b6346e1a93b61

    SHA1

    7ecaf36f1e150c478b6cfc3446ec7f0c662c071a

    SHA256

    42ae110a0ecd0d83c4f12314d42a585354b501856dc3c7b483123fcbc317f2aa

    SHA512

    f11f1182d2fdc14b2c64e2221091e318f76c9a41824977c1a93bf2077300bba919ca4a01c80340c4c20d239ac6dbadf091f544891f0ec72df62a6cc11231faa6

  • \Windows\AppPatch\svchost.exe

    Filesize

    218KB

    MD5

    069156628a42dcdbd42f3a9233db0576

    SHA1

    f92992a53362da9c7afeff84aff7229faa782469

    SHA256

    2cf5cddc27a1951fb72e12e65bc3a58a06fa40cf3ce4eac85f246e85512ad2fc

    SHA512

    a51d7b487e0dbb0f8a0a85e68c0d8716fb0d7154333f2c018879634dcafb2c170aeb0dde1879b49e9992b7e84b6f90104dacd2aff83f600f53b8765b8fe24d4d

  • memory/2276-0-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/2276-1-0x0000000002130000-0x0000000002181000-memory.dmp

    Filesize

    324KB

  • memory/2276-2-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2276-16-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/2276-18-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2276-17-0x0000000002130000-0x0000000002181000-memory.dmp

    Filesize

    324KB

  • memory/2672-74-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-67-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-30-0x00000000006D0000-0x0000000000778000-memory.dmp

    Filesize

    672KB

  • memory/2672-33-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/2672-28-0x00000000006D0000-0x0000000000778000-memory.dmp

    Filesize

    672KB

  • memory/2672-26-0x00000000006D0000-0x0000000000778000-memory.dmp

    Filesize

    672KB

  • memory/2672-25-0x00000000006D0000-0x0000000000778000-memory.dmp

    Filesize

    672KB

  • memory/2672-34-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-38-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-36-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-45-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-44-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-69-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-84-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-83-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-82-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-81-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-80-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-79-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-78-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-77-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-76-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-75-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-22-0x00000000006D0000-0x0000000000778000-memory.dmp

    Filesize

    672KB

  • memory/2672-21-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/2672-72-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-71-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-70-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-68-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-32-0x00000000006D0000-0x0000000000778000-memory.dmp

    Filesize

    672KB

  • memory/2672-66-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-65-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-64-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-63-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-62-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-61-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-60-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-59-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-58-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-56-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-55-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-54-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-53-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-52-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-51-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-49-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-48-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-73-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-47-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-46-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-43-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-57-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-42-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-41-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-50-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-40-0x0000000002470000-0x0000000002526000-memory.dmp

    Filesize

    728KB

  • memory/2672-20-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/2672-19-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB