Analysis

  • max time kernel
    298s
  • max time network
    293s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    30-05-2024 22:50

General

  • Target

    41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe

  • Size

    5.2MB

  • MD5

    36399fe72e5a8a29a42defe1700126e2

  • SHA1

    bff21a2c1a8203aee5a2c2a5aa3259e73206ca95

  • SHA256

    41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620

  • SHA512

    b4461aed93798bb2a10495441e19a0f04f0ec8aff71b16e6ac2f219218a23e988381f4a72c38fc3977e06cfedbaa847ba236a4e96633d966a7b16045a2d2c899

  • SSDEEP

    98304:mtX/40VylSlgJ68ZHIoLzBET1O2S9byQBxfke2tCFq/kABxtjknL5XHBUn:ojP8NzmT1A9fBV/RBynoL5XBA

Malware Config

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 2 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\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe
    "C:\Users\Admin\AppData\Local\Temp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2820
    • C:\Users\Admin\AppData\Local\Temp\is-26QIN.tmp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-26QIN.tmp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp" /SL5="$7011E,5215766,54272,C:\Users\Admin\AppData\Local\Temp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2216
      • C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe
        "C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2360
      • C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe
        "C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2552

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe

    Filesize

    3.0MB

    MD5

    54bb512779fff17f1e18a4536bb4eb6e

    SHA1

    9c803ac2b98c99d5d910a3ee861155972c3686dc

    SHA256

    ecaf1c1a8ed3bc3b76db24bff44a354f911fa6389becf97e12cb5520f3c83265

    SHA512

    ac4bc29abf1f612d102f90196dede30e76bcddc253bba005453a05bc8193e1286a1e01414344272f3c70cf45ae557091f900b3df278ae226899e714012614dc6

  • \Users\Admin\AppData\Local\Temp\is-26QIN.tmp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp

    Filesize

    680KB

    MD5

    22c743dcbbae142041449e2c8bb0873b

    SHA1

    ce0e4d3a73cb2f46394c6de0fcb0183add05a9df

    SHA256

    70e074a2f14bd8adaf5ad28af20d322495ecd0a9f46feffa546ed5923d08af77

    SHA512

    e111757e6bde4318bb9cb64b2716bc4a9a485b3f60c932885a30ec456782dfcccc519b322431e30ad6bc71e9c270be92aba865f3af29f61316dc03b14913e04e

  • \Users\Admin\AppData\Local\Temp\is-JS1N7.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-JS1N7.tmp\_isetup\_shfoldr.dll

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

    Filesize

    744KB

  • memory/2216-9-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2216-64-0x0000000003230000-0x0000000003527000-memory.dmp

    Filesize

    3.0MB

  • memory/2360-70-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2360-65-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2360-66-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-82-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-113-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-134-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-131-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-76-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-79-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-128-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-85-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-88-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-91-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-93-0x0000000002610000-0x00000000026B2000-memory.dmp

    Filesize

    648KB

  • memory/2552-98-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-101-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-104-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-107-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-110-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-72-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-116-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-119-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-122-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2552-125-0x0000000000400000-0x00000000006F7000-memory.dmp

    Filesize

    3.0MB

  • memory/2820-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2820-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/2820-74-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB