Analysis

  • max time kernel
    147s
  • 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 04:39

General

  • Target

    b1966626c6386f4e9c6bc51c248562e1cb52c8fd7dad3e651fdb0cf24be2ad77.exe

  • Size

    4.8MB

  • MD5

    b42a04d3e49ad38506177a3ea8b3badd

  • SHA1

    8b1c812fbc96a01a561b493f3aacf3c04580c1df

  • SHA256

    b1966626c6386f4e9c6bc51c248562e1cb52c8fd7dad3e651fdb0cf24be2ad77

  • SHA512

    2974a2247fc2370e22b94c81dad5cc30c478ec066da43b40124019eeb0d26fb786eea69dfe8ba35ca873733b65cd2fb92b79319c82c852c579345a9ba9471cd5

  • SSDEEP

    98304:mVq35hmT0iqVnt4tl5jgwc35KSAnLW8mtPtbdD2LCrY94/9F:eSLmKLET0BJQWZRFZHsmF

Malware Config

Extracted

Family

socks5systemz

C2

csbmohq.net

http://csbmohq.net/search/?q=67e28dd83f5ff27c445aaa4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978f171ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff613c9ef919833

http://csbmohq.net/search/?q=67e28dd83f5ff27c445aaa4e7c27d78406abdd88be4b12eab517aa5c96bd86eb968e4c865a8bbc896c58e713bc90c91b36b5281fc235a925ed3e52d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c9832cd6b941e

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\b1966626c6386f4e9c6bc51c248562e1cb52c8fd7dad3e651fdb0cf24be2ad77.exe
    "C:\Users\Admin\AppData\Local\Temp\b1966626c6386f4e9c6bc51c248562e1cb52c8fd7dad3e651fdb0cf24be2ad77.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2276
    • C:\Users\Admin\AppData\Local\Temp\is-59LFC.tmp\b1966626c6386f4e9c6bc51c248562e1cb52c8fd7dad3e651fdb0cf24be2ad77.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-59LFC.tmp\b1966626c6386f4e9c6bc51c248562e1cb52c8fd7dad3e651fdb0cf24be2ad77.tmp" /SL5="$40248,4730634,54272,C:\Users\Admin\AppData\Local\Temp\b1966626c6386f4e9c6bc51c248562e1cb52c8fd7dad3e651fdb0cf24be2ad77.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1012
      • 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:1508
      • 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:1216

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2.7MB

    MD5

    3404f39421d9d246ad05cf6bdac32bd2

    SHA1

    dc7c635d0f9cf0374167c9e0b1891dd7e35082e4

    SHA256

    a6bb2e4dbae179d0db5b67bc0c283c22d2b00734731ea2aecac909a38a9170bf

    SHA512

    e2c455a100df7699da79c539d82d417c87ea15b2ebc6100f8a118a0530d3a5fdd17c03af1d2dba8a621a582e04a1f0b314a4b3ab42333099916fe8a4ffdfae83

  • C:\Users\Admin\AppData\Local\Temp\is-3M5N0.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-59LFC.tmp\b1966626c6386f4e9c6bc51c248562e1cb52c8fd7dad3e651fdb0cf24be2ad77.tmp

    Filesize

    680KB

    MD5

    238c5fa30542908575851b341fbe0b7e

    SHA1

    15a1f7a8d667203e26831208e369166dd9ecfcd6

    SHA256

    0db1ae3354e41d13f432939fe3442017933dad4cf1bb275aee27abb4970eb909

    SHA512

    4468845c8383c1098e9ae7dd4105c929c07bed87c3d38c19bab728eaa59b9a12a90f37b785af9fabed5f81e14f8c58fc7cfd80542ccbbc310d2d0e10170057a1

  • memory/1012-71-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1012-10-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1216-101-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-76-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-112-0x0000000000A20000-0x0000000000AC2000-memory.dmp

    Filesize

    648KB

  • memory/1216-110-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-107-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-67-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-69-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-104-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-119-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-72-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-75-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-111-0x0000000000A20000-0x0000000000AC2000-memory.dmp

    Filesize

    648KB

  • memory/1216-79-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-82-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-85-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-88-0x0000000000A20000-0x0000000000AC2000-memory.dmp

    Filesize

    648KB

  • memory/1216-89-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-95-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-98-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1216-116-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1508-59-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1508-64-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1508-65-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/1508-60-0x0000000000400000-0x00000000006BD000-memory.dmp

    Filesize

    2.7MB

  • memory/2276-70-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2276-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2276-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB