Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-06-2024 19:07

General

  • Target

    bb252f53b5d4add6546fc3fe384ff6cdf7e9f9750aac203c32e698b67c06256d.exe

  • Size

    5.6MB

  • MD5

    2dcb104a49188a97c0019dd14ad42cd7

  • SHA1

    3d9189056d8ebecfe03f6f052cdaa440457bad85

  • SHA256

    bb252f53b5d4add6546fc3fe384ff6cdf7e9f9750aac203c32e698b67c06256d

  • SHA512

    04875dca31b271928fb6f9f632f755f4c80b65b041a472720aabd83006239d66b399a6c46302ae2ac73465112062066545836b8220d087badc83be8253df0ea6

  • SSDEEP

    98304:meAs7YA9t2hexYzbI8uMo5sykecbcvFukCs9d0VCrc/LNg+MQOb+F8hJdj0/v+:P94iYfI66PVvF2sTA/L9Zc1hJ10H+

Malware Config

Extracted

Family

socks5systemz

C2

buxelie.com

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 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\bb252f53b5d4add6546fc3fe384ff6cdf7e9f9750aac203c32e698b67c06256d.exe
    "C:\Users\Admin\AppData\Local\Temp\bb252f53b5d4add6546fc3fe384ff6cdf7e9f9750aac203c32e698b67c06256d.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3584
    • C:\Users\Admin\AppData\Local\Temp\is-S2Q5E.tmp\bb252f53b5d4add6546fc3fe384ff6cdf7e9f9750aac203c32e698b67c06256d.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-S2Q5E.tmp\bb252f53b5d4add6546fc3fe384ff6cdf7e9f9750aac203c32e698b67c06256d.tmp" /SL5="$60048,5615910,54272,C:\Users\Admin\AppData\Local\Temp\bb252f53b5d4add6546fc3fe384ff6cdf7e9f9750aac203c32e698b67c06256d.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2216
      • C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer32.exe
        "C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3140
      • C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer32.exe
        "C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1236

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\SVO Media Player\svomediaplayer32.exe
    Filesize

    3.3MB

    MD5

    f971ec2d6d35e44a6c53225ddaeaca61

    SHA1

    b188e554c5b52c252989d197075a655565b14c44

    SHA256

    c67ad22f94543a1749f341eaeec3f1fec9b8d71cb8e2e30ae6af56d1d3d5acf8

    SHA512

    6d74f7f6f97310c45b2a58cc2065a53824a35abec1eb06a48bf1e3672dafc73141d0ca066bd5942c8d0ceb4775e92086750b277e73b0ba42a1e245b77293bc26

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

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

    13KB

    MD5

    a813d18268affd4763dde940246dc7e5

    SHA1

    c7366e1fd925c17cc6068001bd38eaef5b42852f

    SHA256

    e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

    SHA512

    b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

  • C:\Users\Admin\AppData\Local\Temp\is-S2Q5E.tmp\bb252f53b5d4add6546fc3fe384ff6cdf7e9f9750aac203c32e698b67c06256d.tmp
    Filesize

    680KB

    MD5

    4468da54a8b07613269ca5537be5e235

    SHA1

    9aded70f0853385c5561fa275a77508edae15111

    SHA256

    0177788e41f30da5d5ac6c66c54fd51c8eac03a1eddc9deb5ff6aefff7821153

    SHA512

    3b7c3a3bfe4e9ec20ba4d04d06270aa9e26a342bc806c092b37d6a97064c0c7b54f75c9242295f03899d1b5deac99b91480d0c4ba23a6bc33f3739f322279313

  • memory/1236-79-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-82-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-119-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-116-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-113-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-110-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-73-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-107-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-104-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-76-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-101-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-98-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-85-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-88-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/1236-89-0x0000000002560000-0x0000000002602000-memory.dmp
    Filesize

    648KB

  • memory/1236-93-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/2216-13-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2216-75-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/3140-70-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/3140-66-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/3140-65-0x0000000000400000-0x0000000000747000-memory.dmp
    Filesize

    3.3MB

  • memory/3584-0-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3584-74-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/3584-2-0x0000000000401000-0x000000000040B000-memory.dmp
    Filesize

    40KB