Analysis

  • max time kernel
    141s
  • max time network
    130s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    25-06-2024 11:00

General

  • Target

    fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe

  • Size

    5.1MB

  • MD5

    4584680ce9e3bb07abc9d9a2d98f3e26

  • SHA1

    f3581d85e23cc05c9cd537f9fc9ab6ca545542e0

  • SHA256

    fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c

  • SHA512

    30081900f80201343fe6e7483f476f8a07aeb199876b638233771506e0b86e3f7a67c1666a31269a917e8d86e73d16fcbf75f81ac977af3614216e5568ab756a

  • SSDEEP

    98304:mm5QI3YlVxyxtzu6ygm5QElnnxFlvsqcliAblMq0A4yLxt+QDk5RXwMTW5RBEp:RpY4r9m7Zxrv00AtVg+6

Malware Config

Extracted

Family

socks5systemz

C2

csfuchp.net

http://csfuchp.net/search/?q=67e28dd86f59a17b435afa187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4fe8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff612c1ec969833

http://csfuchp.net/search/?q=67e28dd86f59a17b435afa187c27d78406abdd88be4b12eab517aa5c96bd86ec958349865a8bbc896c58e713bc90c91a36b5281fc235a925ed3e01d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c993ace6c941e

Signatures

  • Detect Socks5Systemz Payload 3 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Checks installed software on the system 1 TTPs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe
    "C:\Users\Admin\AppData\Local\Temp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:744
    • C:\Users\Admin\AppData\Local\Temp\is-DOIEN.tmp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-DOIEN.tmp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp" /SL5="$800D8,5091457,54272,C:\Users\Admin\AppData\Local\Temp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:400
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:568
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:276

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe

    Filesize

    3.2MB

    MD5

    c1d017d322f193865efe2f5b40b7fadb

    SHA1

    1de5b69a2cd1ede32aa272925b37f6c402b4b258

    SHA256

    823f7870250ec1da98363b84d6005e39dcd76fdbb1cbac7f1afa6233347535fe

    SHA512

    72269dd9ae863b2324047624aec216e6dbecaf5fc28b40bf5c7a165fde5abc36b46b80725bb6e2b25077994c1636dc75d235ac3d38dbb9e88f2bc1a3300098ff

  • C:\Users\Admin\AppData\Local\Temp\is-BDEU5.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-DOIEN.tmp\fb981dd888d7af3c3de5a71c900074f48799882148fa7a8e6145f7ec52d0f61c.tmp

    Filesize

    680KB

    MD5

    32d424af04d29f2313b999c29b0f74e0

    SHA1

    9b2bc33ee273592fd2fc562f4a6e2b8e9fa9843e

    SHA256

    cb5e4eaff4b283ccfe18095f3d22d100b9816a195295e69d7dd291d03cc6cee9

    SHA512

    ea0eb300cc439053d42143c8f5bf32fecbb31dedb811857cdd33c43668696e4f1daa0d57350c8b75f8792c5bd930634e8aa78cce8921605ccb878811c168cecd

  • memory/276-102-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-105-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-79-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-120-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-82-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-117-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-113-0x0000000000A90000-0x0000000000B32000-memory.dmp

    Filesize

    648KB

  • memory/276-67-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-69-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-112-0x0000000000A90000-0x0000000000B32000-memory.dmp

    Filesize

    648KB

  • memory/276-111-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-85-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-75-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-76-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-108-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-99-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-72-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-88-0x0000000000A90000-0x0000000000B32000-memory.dmp

    Filesize

    648KB

  • memory/276-91-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/276-96-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/400-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/400-71-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/568-60-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/568-65-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/568-63-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/568-59-0x0000000000400000-0x000000000073B000-memory.dmp

    Filesize

    3.2MB

  • memory/744-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/744-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/744-70-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB