Analysis

  • max time kernel
    292s
  • max time network
    249s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    17-06-2024 05:03

General

  • Target

    376ea1088a0672ce1a710ecd6c752838c6811497869debc0f6d3702ea52f35ba.exe

  • Size

    4.8MB

  • MD5

    e453f90cd27e506462f3d5bfd7054148

  • SHA1

    3f645dee28e54c6f262e2ec8b65e97e05bbe48f8

  • SHA256

    376ea1088a0672ce1a710ecd6c752838c6811497869debc0f6d3702ea52f35ba

  • SHA512

    208bf169ae42e70dc5501a4accaa20f19927c2d48478a49d0ff685c6a7c0943d186f56f6d0160ff76fa8c072618850289f3936cd9d1c1066e42fd6873f41aa51

  • SSDEEP

    98304:m1X922HLks7WIMRqVIP73Wf86sGuWWir8lXUAtgub/ZgJ/C:sXMasI6/7mf864WWirqXvhRk/C

Malware Config

Extracted

Family

socks5systemz

C2

aaeksnw.ru

http://aaeksnw.ru/search/?q=67e28dd8690cfb204406a51a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978fe71ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a6f88ff11c6e790

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 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 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\376ea1088a0672ce1a710ecd6c752838c6811497869debc0f6d3702ea52f35ba.exe
    "C:\Users\Admin\AppData\Local\Temp\376ea1088a0672ce1a710ecd6c752838c6811497869debc0f6d3702ea52f35ba.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2912
    • C:\Users\Admin\AppData\Local\Temp\is-0E05K.tmp\376ea1088a0672ce1a710ecd6c752838c6811497869debc0f6d3702ea52f35ba.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-0E05K.tmp\376ea1088a0672ce1a710ecd6c752838c6811497869debc0f6d3702ea52f35ba.tmp" /SL5="$400BE,4783805,54272,C:\Users\Admin\AppData\Local\Temp\376ea1088a0672ce1a710ecd6c752838c6811497869debc0f6d3702ea52f35ba.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2148
      • C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
        "C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2684
      • C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
        "C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2532

Network

MITRE ATT&CK Matrix ATT&CK v13

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe
    Filesize

    2.9MB

    MD5

    9058a24c7ee89152190613e27c831a47

    SHA1

    bcd2d3409e4ce69ce2fcaba5fb2d43de6d2d6df6

    SHA256

    032c2541a0f7f48aa1659e59331f4de35d283f9249318ab30f667f7974f1fdbf

    SHA512

    22c4bbbefac5725439797263b20b501b13231df4e610ae00354849762bac93d5b36b92c1d3448342de8bc7d822e9b2842cad60847220b836a78bfad695e72ee3

  • \Users\Admin\AppData\Local\Temp\is-0E05K.tmp\376ea1088a0672ce1a710ecd6c752838c6811497869debc0f6d3702ea52f35ba.tmp
    Filesize

    680KB

    MD5

    984e6b8a7e6fa5cbf5a45904b1defc00

    SHA1

    37ce92d6cf1a117a191d14cc7fa1a6a97c05c967

    SHA256

    3313fd9ad369bdee368d356036858a7fcc6182175a30a92a6b73e41e1b2a5eb7

    SHA512

    55af997bfcc532ff01e593471197555432481587c263eb3777e511c656e030edd6c34edce0778b07e117dae4b9ed18976d2ec5c2fe127511a5f29928223ab7c8

  • \Users\Admin\AppData\Local\Temp\is-GST1P.tmp\_isetup\_iscrypt.dll
    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-GST1P.tmp\_isetup\_shfoldr.dll
    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • memory/2148-64-0x00000000033A0000-0x000000000368D000-memory.dmp
    Filesize

    2.9MB

  • memory/2148-76-0x00000000033A0000-0x000000000368D000-memory.dmp
    Filesize

    2.9MB

  • memory/2148-16-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2148-74-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2532-82-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-98-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-137-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-132-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-129-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-75-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-126-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-79-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-123-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-85-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-88-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-91-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-92-0x0000000002510000-0x00000000025B2000-memory.dmp
    Filesize

    648KB

  • memory/2532-120-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-101-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-104-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-107-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-110-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-113-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2532-117-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2684-66-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2684-65-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2684-70-0x0000000000400000-0x00000000006ED000-memory.dmp
    Filesize

    2.9MB

  • memory/2912-3-0x0000000000401000-0x000000000040B000-memory.dmp
    Filesize

    40KB

  • memory/2912-0-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2912-73-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB