Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    19-06-2024 18:39

General

  • Target

    8292013c60f6e8b7b22d8d0f08772a6640fc1fd7f41b3d40f64b833e27873fe0.exe

  • Size

    5.1MB

  • MD5

    aca938783a0c6538637449a736a2a9fe

  • SHA1

    a611585e0c8fdb757f7447fae31071be435a7b53

  • SHA256

    8292013c60f6e8b7b22d8d0f08772a6640fc1fd7f41b3d40f64b833e27873fe0

  • SHA512

    8f6826e24fb5b4d42be920449697a3f6f42f9e3e3403c7ee68ab4922e2e936786b1495d9267355528349db61069fd5d9a9168fdca6371195f6fe74610de3c4d0

  • SSDEEP

    98304:mROJDJLaZRzbODF2D90A+B1A6hkjTKJZRdAzwatBq8mY3hAxARNXGyn4y9TCSrv7:57uCFE0AA1AOkvsnIwaLqZe8rUdD8k

Malware Config

Extracted

Family

socks5systemz

C2

cegbpzd.net

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 3 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\8292013c60f6e8b7b22d8d0f08772a6640fc1fd7f41b3d40f64b833e27873fe0.exe
    "C:\Users\Admin\AppData\Local\Temp\8292013c60f6e8b7b22d8d0f08772a6640fc1fd7f41b3d40f64b833e27873fe0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4120
    • C:\Users\Admin\AppData\Local\Temp\is-GL7OB.tmp\8292013c60f6e8b7b22d8d0f08772a6640fc1fd7f41b3d40f64b833e27873fe0.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-GL7OB.tmp\8292013c60f6e8b7b22d8d0f08772a6640fc1fd7f41b3d40f64b833e27873fe0.tmp" /SL5="$50066,5126010,54272,C:\Users\Admin\AppData\Local\Temp\8292013c60f6e8b7b22d8d0f08772a6640fc1fd7f41b3d40f64b833e27873fe0.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2228
      • C:\Users\Admin\AppData\Local\Audials Tunebite\audialstunebite32_64.exe
        "C:\Users\Admin\AppData\Local\Audials Tunebite\audialstunebite32_64.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2164
      • C:\Users\Admin\AppData\Local\Audials Tunebite\audialstunebite32_64.exe
        "C:\Users\Admin\AppData\Local\Audials Tunebite\audialstunebite32_64.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1604

Network

MITRE ATT&CK Matrix ATT&CK v13

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Audials Tunebite\audialstunebite32_64.exe
    Filesize

    2.7MB

    MD5

    13d79d414fbac92eb8210f07f204925a

    SHA1

    ca57df93c8f31c1317617147ee74903135d83d53

    SHA256

    4d95dd9318bfea30619b926800eeb308bf3332ee2715dedebe4c4872df177ecc

    SHA512

    982c4ddbf3daa140d5f9ea2cd8ac89dc4c8c20b814086bdc5b839949f6fbf19b85baec71f50a8f06742727d84e77ed9e5f28f58b9f115c37f8187e485deff667

  • C:\Users\Admin\AppData\Local\Temp\is-D9VVH.tmp\_isetup\_iscrypt.dll
    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-GL7OB.tmp\8292013c60f6e8b7b22d8d0f08772a6640fc1fd7f41b3d40f64b833e27873fe0.tmp
    Filesize

    680KB

    MD5

    9c0c87dbb79871a4914149cd5acefbf8

    SHA1

    35627d4c709114e03240747deb05d154743ccb59

    SHA256

    0b29aab1bdbef4c1435541320b77e3a47d063f2cb0657018a918907d8ede18bf

    SHA512

    6608bfbf67b572584cd068ca60eb71fa972384f7c3cfa87011e82e5c15cb10332d4dcc6db23fc3153104dd635e6b2eb9e27d6eb08a07f4a396b04757a20080bd

  • memory/1604-94-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-77-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-115-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-112-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-109-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-106-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-103-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-67-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-100-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-97-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-70-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-73-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-74-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-89-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-80-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-83-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/1604-86-0x00000000022F0000-0x0000000002392000-memory.dmp
    Filesize

    648KB

  • memory/2164-63-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/2164-64-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/2164-61-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/2164-59-0x0000000000400000-0x00000000006AC000-memory.dmp
    Filesize

    2.7MB

  • memory/2228-10-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2228-69-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/4120-0-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/4120-68-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/4120-3-0x0000000000401000-0x000000000040B000-memory.dmp
    Filesize

    40KB