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Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    23/05/2024, 19:42

General

  • Target

    ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.exe

  • Size

    4.5MB

  • MD5

    452df1ddf452db76265d93eee3c5a524

  • SHA1

    d0d52b1c09509e4481f40ae479f3a65e34689fe9

  • SHA256

    ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9

  • SHA512

    86a7778cb03bf3f483f0c70742b2869c746bc574e516fe9f56b858447d24f5751c8080eb4fa15ae758e477f5e98fdd83c0a1c844f7b6f7dca5b4215e53ca23e0

  • SSDEEP

    98304:m/ByB4CMftNn9wc74TIi3CwP43ngSA6WA52I1Aro9mVq8NAQNt/DF9R:HqfDn9374TN37tRDA5A898NhhR

Malware Config

Signatures

  • Detect Socks5Systemz Payload 3 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 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 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.exe
    "C:\Users\Admin\AppData\Local\Temp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3108
    • C:\Users\Admin\AppData\Local\Temp\is-AIBUQ.tmp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-AIBUQ.tmp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp" /SL5="$4020E,4458175,54272,C:\Users\Admin\AppData\Local\Temp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4628
      • C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe
        "C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe" -i
        3⤵
        • Executes dropped EXE
        PID:3200
      • C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe
        "C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe" -s
        3⤵
        • Executes dropped EXE
        PID:1644

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\CyberSound AudioDirector\cybersoundaudiodirector.exe

    Filesize

    2.5MB

    MD5

    0c1b7352c43e558562ee7dd2c85108a4

    SHA1

    399b714f784a97c8ce935c0905384b627a3c6016

    SHA256

    cc719dd2c39a09f7f621585d9c5e84a011d40bcd9d8a3a4a26d2b4d7490b7612

    SHA512

    8e05837505c80147c972a3fea9d0edf3c514d46b7ec9d8a4e740892a5d1269aae945c5d6606be311f702efc1579c80eebb487b0c93c31f2459e54b913b24bea3

  • C:\Users\Admin\AppData\Local\Temp\is-AIBUQ.tmp\ab118b0a037d05ca37539e71ccd4502f2635785f949808ea8f04f2232720edb9.tmp

    Filesize

    680KB

    MD5

    9a66562af1741b32df6da2623d7c5495

    SHA1

    817eb882a12486fe41c650afc3e032f31006c53d

    SHA256

    0f4986165bde4f9ed80bb873e8c398c817140b12685d6cd81cd1723100ebe0c7

    SHA512

    92b996173f843c9cf1dcc16f3e3715478905bd9d9ff35c7472b8575eb87baa779d60a363f8da09070c9df2872947de60487040a1f2034681a13796462af2450c

  • C:\Users\Admin\AppData\Local\Temp\is-O54A7.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • memory/1644-101-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-95-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-119-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-116-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-112-0x0000000000990000-0x0000000000A32000-memory.dmp

    Filesize

    648KB

  • memory/1644-111-0x0000000000990000-0x0000000000A32000-memory.dmp

    Filesize

    648KB

  • memory/1644-110-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-67-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-68-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-107-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-104-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-71-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-74-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-75-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-98-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-84-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-78-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-87-0x0000000000990000-0x0000000000A32000-memory.dmp

    Filesize

    648KB

  • memory/1644-90-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/1644-81-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/3108-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3108-69-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/3108-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/3200-64-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/3200-63-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/3200-60-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/3200-59-0x0000000000400000-0x000000000067E000-memory.dmp

    Filesize

    2.5MB

  • memory/4628-10-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4628-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB