Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    25-06-2024 16:43

General

  • Target

    4d43d85e30e1b07cf9387524a9e754b66e4664da4b6978fb3edddba92e6b3567.exe

  • Size

    5.1MB

  • MD5

    3e4e91cc15b7b8e29293f52b2ee0a8e5

  • SHA1

    b28cb2544d9723e9e71a8410049d6e3ba2dc061c

  • SHA256

    4d43d85e30e1b07cf9387524a9e754b66e4664da4b6978fb3edddba92e6b3567

  • SHA512

    1fb67f63130edf0aa00279eb8b7d1b019f8a91b62eb971e62a4defe9d5f470162961ad17b701bb50bd8d57f18f2ac8ccd670b6a5da38513073ece67b21f84d01

  • SSDEEP

    98304:mbgBAVMulSL2N6zLbI1TxXIeTRSm0maiPxv38lHS:KgBAVMpL2N6zLbI9I25p/8JS

Malware Config

Extracted

Family

socks5systemz

C2

buyadra.com

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\4d43d85e30e1b07cf9387524a9e754b66e4664da4b6978fb3edddba92e6b3567.exe
    "C:\Users\Admin\AppData\Local\Temp\4d43d85e30e1b07cf9387524a9e754b66e4664da4b6978fb3edddba92e6b3567.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3888
    • C:\Users\Admin\AppData\Local\Temp\is-9MSEE.tmp\4d43d85e30e1b07cf9387524a9e754b66e4664da4b6978fb3edddba92e6b3567.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-9MSEE.tmp\4d43d85e30e1b07cf9387524a9e754b66e4664da4b6978fb3edddba92e6b3567.tmp" /SL5="$50216,5144053,54272,C:\Users\Admin\AppData\Local\Temp\4d43d85e30e1b07cf9387524a9e754b66e4664da4b6978fb3edddba92e6b3567.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4640
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32_64.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32_64.exe" -i
        3⤵
        • Executes dropped EXE
        PID:72
      • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32_64.exe
        "C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32_64.exe" -s
        3⤵
        • Executes dropped EXE
        PID:3064

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32_64.exe

    Filesize

    3.3MB

    MD5

    e4659288370bbc4fcd87dfa43233689d

    SHA1

    3047f4c032e77189f3daffdf909bce298aa1a437

    SHA256

    92467f70c32e193e22e647b1f9a6e4e7ef07dcd502ef4cb563b6e19a10ec869d

    SHA512

    db760ccafe343fc5422fd91e36a5a9a6aee4c400ffa6d0aba3d77c4bf43d0593edea1d7f6ef22c7edc1e08dd34aad62e35c3fa540278864aedde98e43722d511

  • C:\Users\Admin\AppData\Local\Temp\is-9MSEE.tmp\4d43d85e30e1b07cf9387524a9e754b66e4664da4b6978fb3edddba92e6b3567.tmp

    Filesize

    680KB

    MD5

    d319a3ce17a77dc3e907ec3cde6263df

    SHA1

    a2d6b09d5b74ec25f684f039c653888782c1dc6b

    SHA256

    0090d0863275e7932857b58a8dbb5965e17cbe0cd4781ed60aee4295d8a85149

    SHA512

    3bfa72ace92ce5a1557e0512a6c580291c068791c18a97af53a3ceb4cf3824bf3e18547f8057d4a872d2d308f06ce6939405228f742b4410a0905b7bdf751d8b

  • C:\Users\Admin\AppData\Local\Temp\is-N9KPR.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • memory/72-60-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/72-64-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/72-63-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/72-59-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-73-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-83-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-115-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-67-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-112-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-109-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-70-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-106-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-74-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-77-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-80-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-103-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-86-0x0000000000AE0000-0x0000000000B82000-memory.dmp

    Filesize

    648KB

  • memory/3064-89-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-94-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-97-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3064-100-0x0000000000400000-0x0000000000750000-memory.dmp

    Filesize

    3.3MB

  • memory/3888-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3888-68-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3888-3-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/4640-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4640-69-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB