Analysis

  • max time kernel
    105s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/04/2025, 01:03

General

  • Target

    9ddb239d7c1ca00e5cf13cd6b1f816bdba30792b1f26cef2ca807336bd0b3802.exe

  • Size

    908KB

  • MD5

    0cf5491278c7d87e8c3fc88c7f9f26ff

  • SHA1

    db1d9f161f331d07bbb626acf7d4f8f6e1a2c742

  • SHA256

    9ddb239d7c1ca00e5cf13cd6b1f816bdba30792b1f26cef2ca807336bd0b3802

  • SHA512

    6bda8ea0fe42eb032d0c81e49e7c1a3d8d321185615bae41aca265b53d63191274c8ec6b646663668ab78d4b4ed5986ca73fcd85c2e212cde075d324f5a2c66f

  • SSDEEP

    6144:xcQQbTJ0huBKxmueLQ320SlmQ2Gz3bJo47/T8MF3KSUEtQGG4P4T:bqLQ320SlmQ2GzW47vKSry14P

Malware Config

Signatures

  • Detects Rhysida ransom note 1 IoCs
  • Rhysida

    Rhysida is a ransomware that is written in C++ and discovered in 2023.

  • Rhysida family
  • Renames multiple (9721) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

  • Deletes itself 1 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Drops file in Program Files directory 64 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9ddb239d7c1ca00e5cf13cd6b1f816bdba30792b1f26cef2ca807336bd0b3802.exe
    "C:\Users\Admin\AppData\Local\Temp\9ddb239d7c1ca00e5cf13cd6b1f816bdba30792b1f26cef2ca807336bd0b3802.exe"
    1⤵
    • Drops startup file
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2684
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp/tmpf193.dll,run C:\Users\Admin\AppData\Local\Temp\9ddb239d7c1ca00e5cf13cd6b1f816bdba30792b1f26cef2ca807336bd0b3802.exe
      2⤵
      • Deletes itself
      • Loads dropped DLL
      PID:4504

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\Microsoft\EdgeCore\133.0.3065.69\VisualElements\Logo.png.rhysida

    Filesize

    34KB

    MD5

    0eccc690075361377e0b5f4b2046dc6f

    SHA1

    58c03d38c58da891c20a114aa11425b90d3eed0c

    SHA256

    fac47126010cbf51156fc64eba08a71c60c1c93b371b648f21b5563d970e59d0

    SHA512

    e9b0a91d46a3d0cb86e88af419b1e45a0600d0d2b436460a7d04f0f2e8754ddbeaf2efd202e6e3d06538b99ca78aa5122eae35120ca3072ce1828aa404104cb7

  • C:\Program Files (x86)\Microsoft\EdgeCore\133.0.3065.69\VisualElements\SmallLogoCanary.png.rhysida

    Filesize

    17KB

    MD5

    265e0a2e2bc5ad6ce6e1de2040a9be25

    SHA1

    4ecf93e9065e81607ae21def0cd01ae0337cb182

    SHA256

    ae7faffc43ad37f478eb5b76712aeffffcd2d2c82837ececfd9467e37df6cb87

    SHA512

    a24f743633139a49fa70b75b85764951c869f2c921fc7fd9c4d9fcb74a8b37d734b9b08063cdb5a64af541636d3d0e9f49c6fbbfa692e8eaecddf066cad49806

  • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\ResiliencyLinks\msedge_100_percent.pak.DATA.rhysida

    Filesize

    1.5MB

    MD5

    898adb5cf14d4b90c5a25faae20279fb

    SHA1

    f2f9ff544d8cd9dec049b73ea8ad1f11cde5ec58

    SHA256

    2a24cc0163ac5433aec293b91e615cdc835ef3c453ea0dd4c4e683619338dfd3

    SHA512

    60156bff53342ee58c6ad4ab3c7ef0ae8362d5ab6c025a5a064208b3554818d83dcb5c2653f81aa59d8d815826bf068a292e0547026dee20edc9288583ffd573

  • C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.69\notification_helper.exe.manifest.rhysida

    Filesize

    4KB

    MD5

    d583a9e57a3d29d256e5d10475bf3a69

    SHA1

    7f292c468dd82e470e1bb632d72b6aff78fa8675

    SHA256

    45df95d241e8735f8ef87e75c7e7bf444b7de3842a41031364236027c86bad6c

    SHA512

    33e7bd378d4f97f0f9cd805b6f12729ec5e9c9b9465fd00066dbe4e1102e66136088520801d47cf14d545a2b0c569aea46cf4e3325ff9800826c7530cb6cdc55

  • C:\Program Files\CriticalBreachDetected.pdf

    Filesize

    111KB

    MD5

    49379b7b592a53fba1af809f38e0c8be

    SHA1

    dace11e0bad3da3a6315ed6e72e66dce004df13d

    SHA256

    20de3fa257de804c635184416d72e0b941e4b390a7c34f5a240aeaa5f5ef67eb

    SHA512

    ea88fdeb46ae9435524975ee52e80210b56b9c4c974018736602804bbadc7b3a7d441fd550c0113c628407f6167995644d6e7dda2b4af835134fd0227f771a4b

  • C:\Users\Admin\AppData\Local\Temp\tmpf193.dll

    Filesize

    2KB

    MD5

    634a9af8d3f2fa0d38820d577fb0fbeb

    SHA1

    cd6e84a3c4f81fc9df8b82449db8b2e87130e3fd

    SHA256

    c9920e995fbc98cd3883ef4c4520300d5e82bab5d2a5c781e9e9fe694a43e82f

    SHA512

    abca2e016ff5a53395f95ba75c96f5bfa102086e92a8e2647bd2584a75e4a81a59596848d1abfab8e37981a6adb021a35074d4dc99868cc30c9c4e2a4666c50a

  • memory/2684-7051-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB

  • memory/2684-14903-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB

  • memory/2684-15242-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB

  • memory/2684-15243-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB

  • memory/2684-15247-0x0000000000400000-0x00000000004F2000-memory.dmp

    Filesize

    968KB