Analysis

  • max time kernel
    300s
  • max time network
    252s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    20-06-2024 22:44

General

  • Target

    4ab1863b313c6fd6f23f2f12a36ec85bd3b73ea416781f8f3005861811a93307.exe

  • Size

    4.9MB

  • MD5

    67903dbec0ca269f36cb0437d64cf1c0

  • SHA1

    a519f6efbab01a87dc0e28fd0b0d72aba3fabd8e

  • SHA256

    4ab1863b313c6fd6f23f2f12a36ec85bd3b73ea416781f8f3005861811a93307

  • SHA512

    2c750997041e90214e3b142ec910a411c3c44caf7966b1f91f8a4ce650d06b1d9cd83b002a0248e64b0d63d39ecddd524c1a0735afd9de95a41c1d32783a6d56

  • SSDEEP

    98304:m7mjMCRrvOExnt0SjCxHZz4kXgEkW9Q+ADZ68+OEEINCsbmeD0wEuTbXsk:2mjMCRrGEBuH47ETXADc1tEs30U8k

Malware Config

Extracted

Family

socks5systemz

C2

bevivbo.com

http://bevivbo.com/search/?q=67e28dd8690cfb204406a51a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978fe71ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a6f87fd12c5ed95

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 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\4ab1863b313c6fd6f23f2f12a36ec85bd3b73ea416781f8f3005861811a93307.exe
    "C:\Users\Admin\AppData\Local\Temp\4ab1863b313c6fd6f23f2f12a36ec85bd3b73ea416781f8f3005861811a93307.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1652
    • C:\Users\Admin\AppData\Local\Temp\is-PB65K.tmp\4ab1863b313c6fd6f23f2f12a36ec85bd3b73ea416781f8f3005861811a93307.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-PB65K.tmp\4ab1863b313c6fd6f23f2f12a36ec85bd3b73ea416781f8f3005861811a93307.tmp" /SL5="$400E4,4859600,54272,C:\Users\Admin\AppData\Local\Temp\4ab1863b313c6fd6f23f2f12a36ec85bd3b73ea416781f8f3005861811a93307.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2736
      • 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:3052
      • 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:2628

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

    2.4MB

    MD5

    5db87cb7ef00c84b66c819dc3597dbaf

    SHA1

    757bd3bc86be74583976f24ad2f835f826921659

    SHA256

    00dff30836b1045ab6d36409aac68ec4a0f0bf700d25c2a61881e07d89d16df3

    SHA512

    631d653f4e4535888faf267d845fe0cf9f4e78e95371ca148a83f51ef065a8ff1dc1c80ddc131329bd45e105398ecf3d3bfc0e184f6dbe266b7a6fa8d7aa0ccf

  • \Users\Admin\AppData\Local\Temp\is-FQSJ9.tmp\_isetup\_iscrypt.dll
    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-FQSJ9.tmp\_isetup\_shfoldr.dll
    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • \Users\Admin\AppData\Local\Temp\is-PB65K.tmp\4ab1863b313c6fd6f23f2f12a36ec85bd3b73ea416781f8f3005861811a93307.tmp
    Filesize

    680KB

    MD5

    9c0c87dbb79871a4914149cd5acefbf8

    SHA1

    35627d4c709114e03240747deb05d154743ccb59

    SHA256

    0b29aab1bdbef4c1435541320b77e3a47d063f2cb0657018a918907d8ede18bf

    SHA512

    6608bfbf67b572584cd068ca60eb71fa972384f7c3cfa87011e82e5c15cb10332d4dcc6db23fc3153104dd635e6b2eb9e27d6eb08a07f4a396b04757a20080bd

  • memory/1652-74-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/1652-0-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/1652-2-0x0000000000401000-0x000000000040B000-memory.dmp
    Filesize

    40KB

  • memory/2628-112-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-94-0x0000000002690000-0x0000000002732000-memory.dmp
    Filesize

    648KB

  • memory/2628-139-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-134-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-72-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-131-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-128-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-76-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-79-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-125-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-122-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-84-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-87-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-90-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-93-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-119-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-100-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-103-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-106-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-109-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2628-115-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/2736-12-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2736-64-0x00000000033D0000-0x0000000003634000-memory.dmp
    Filesize

    2.4MB

  • memory/2736-81-0x00000000033D0000-0x0000000003634000-memory.dmp
    Filesize

    2.4MB

  • memory/2736-80-0x00000000033D0000-0x0000000003634000-memory.dmp
    Filesize

    2.4MB

  • memory/2736-75-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/3052-65-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/3052-69-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB

  • memory/3052-67-0x0000000000400000-0x0000000000664000-memory.dmp
    Filesize

    2.4MB