Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240611-en
  • resource tags

    arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    25-06-2024 10:20

General

  • Target

    dd520bfd993f321fae25b86b9b0c05ee2bab51cdc4b4cb5c6dc6cd0dc80570a8.exe

  • Size

    4.8MB

  • MD5

    9a7814ca4122cc8ca1c4554a0bc11c7b

  • SHA1

    210492d1bf16507f03e1c3647a05fb9e0ae018d4

  • SHA256

    dd520bfd993f321fae25b86b9b0c05ee2bab51cdc4b4cb5c6dc6cd0dc80570a8

  • SHA512

    9f301aad602f9b158c6b7d717a2b7b1e3929736f980bedb74890bf29f19a106058996d2bf70d604cd1aae72835d56cace61d4157ed94f7c563b12db36a8c29c0

  • SSDEEP

    98304:mTS0f8Lu0KG7UPFRN0OalsPmx0zgoPUG2DYd:qiLu0KOlSzDPPZ

Malware Config

Extracted

Family

socks5systemz

C2

bumlrvi.com

http://bumlrvi.com/search/?q=67e28dd86459a42c4009ab4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978f171ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff612c1ef9c9b3a

http://bumlrvi.com/search/?q=67e28dd86459a42c4009ab4e7c27d78406abdd88be4b12eab517aa5c96bd86ea93834896148ab2865b77f80ebad9c50f7cb63037ed2ab423a4344383ba915d911ec07bb606a0708727e40ea678c751bbe34efb0e2807e12571c17f3e83fe16c1e6969b3bc46e97

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\dd520bfd993f321fae25b86b9b0c05ee2bab51cdc4b4cb5c6dc6cd0dc80570a8.exe
    "C:\Users\Admin\AppData\Local\Temp\dd520bfd993f321fae25b86b9b0c05ee2bab51cdc4b4cb5c6dc6cd0dc80570a8.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1476
    • C:\Users\Admin\AppData\Local\Temp\is-9TKNL.tmp\dd520bfd993f321fae25b86b9b0c05ee2bab51cdc4b4cb5c6dc6cd0dc80570a8.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-9TKNL.tmp\dd520bfd993f321fae25b86b9b0c05ee2bab51cdc4b4cb5c6dc6cd0dc80570a8.tmp" /SL5="$4022E,4749319,54272,C:\Users\Admin\AppData\Local\Temp\dd520bfd993f321fae25b86b9b0c05ee2bab51cdc4b4cb5c6dc6cd0dc80570a8.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:240
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe" -i
        3⤵
        • Executes dropped EXE
        PID:1528
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2496

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition.exe

    Filesize

    2.7MB

    MD5

    e8801950bdfbd7cfa93392db9d3790fe

    SHA1

    f4be734379ed1ea38ebeb7e9e53d5b8a5288ca97

    SHA256

    8251c64ca9eabd7b0ca51e97bb9e148d119f840e0792e389137e3da70a3c063c

    SHA512

    9f6851c5d4a7caef4df38f2966b193fb45675208c2074499e04cdb2bbc22929c6566390da28073abc9e47a45b440ac7aba2c7c4837f74e3baac9aec02f42e323

  • C:\Users\Admin\AppData\Local\Temp\is-9TKNL.tmp\dd520bfd993f321fae25b86b9b0c05ee2bab51cdc4b4cb5c6dc6cd0dc80570a8.tmp

    Filesize

    680KB

    MD5

    e8f92ef4f6a6bd645173f2b208a1480a

    SHA1

    598ad6a8f2f48a797157cd9a42a830bcb86685f5

    SHA256

    3411c3185fee7fd0b74d0faa31af1ff2997ab916eed55f2ef3c99ccaf0e8b27e

    SHA512

    6900f01866513efd5f00598269ef7493166821e6dcd3d435936bde4416e5dfac1335dd3156351e6f9b1520e23defbbe99ccb09380962afef3cdcbff3272887e1

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

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • memory/240-10-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/240-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1476-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1476-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1476-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/1528-59-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/1528-60-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/1528-63-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-74-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-89-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-71-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-67-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-75-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-78-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-81-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-84-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-88-0x00000000008C0000-0x0000000000962000-memory.dmp

    Filesize

    648KB

  • memory/2496-68-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-95-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-98-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-101-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-104-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-107-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-110-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-111-0x00000000008C0000-0x0000000000962000-memory.dmp

    Filesize

    648KB

  • memory/2496-112-0x00000000008C0000-0x0000000000962000-memory.dmp

    Filesize

    648KB

  • memory/2496-116-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB

  • memory/2496-119-0x0000000000400000-0x00000000006C1000-memory.dmp

    Filesize

    2.8MB