Analysis

  • max time kernel
    293s
  • max time network
    284s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    30-05-2024 22:42

General

  • Target

    2a173d2d67ed59e4cbe866521194379b951aa81cefa2001de4b8d0b123cb9028.exe

  • Size

    5.2MB

  • MD5

    bcaf00e45da5ce8c107e3ba7c03c2d1b

  • SHA1

    8cbd6097725e59668f7b9705d3c11666ca295619

  • SHA256

    2a173d2d67ed59e4cbe866521194379b951aa81cefa2001de4b8d0b123cb9028

  • SHA512

    5f5a7626d8ce57a644a534f1cf19af814fb8aef96d9d87c1d8fd58954921ff6142f992abf0d7069451a117f139c89ba9fe93e26db0412eaa7e740baff62e3965

  • SSDEEP

    98304:maTF6ZNDcnTcBRTNg8UhAgNXUJslK18312VK4eRcjLOWTeR4ZDzJoO:7UZNDcTcXTNg8+EiU18312CcjbymZDWO

Malware Config

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 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\2a173d2d67ed59e4cbe866521194379b951aa81cefa2001de4b8d0b123cb9028.exe
    "C:\Users\Admin\AppData\Local\Temp\2a173d2d67ed59e4cbe866521194379b951aa81cefa2001de4b8d0b123cb9028.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2216
    • C:\Users\Admin\AppData\Local\Temp\is-PEGNT.tmp\2a173d2d67ed59e4cbe866521194379b951aa81cefa2001de4b8d0b123cb9028.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-PEGNT.tmp\2a173d2d67ed59e4cbe866521194379b951aa81cefa2001de4b8d0b123cb9028.tmp" /SL5="$4001C,5198955,54272,C:\Users\Admin\AppData\Local\Temp\2a173d2d67ed59e4cbe866521194379b951aa81cefa2001de4b8d0b123cb9028.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:784
      • C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe
        "C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2720
      • C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe
        "C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2460

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2.7MB

    MD5

    f00f6f0a718899b137b2358b1eff047d

    SHA1

    15abd856b6d3f4f86efe114f1a08bd8031df644f

    SHA256

    99920c80b838de911c052c137e3114bc692630ae93c083ab9ee95e5df645b45c

    SHA512

    a62b2fbfa0bc374b2e09be498a56cd005012097d307ca64ea9fd4ed909dbd773a00b0eba4125041f84fa043b7cecd95c245c9a4df6469d78f2a8c7bb83144c54

  • \Users\Admin\AppData\Local\Temp\is-PEGNT.tmp\2a173d2d67ed59e4cbe866521194379b951aa81cefa2001de4b8d0b123cb9028.tmp

    Filesize

    680KB

    MD5

    5ef939251fce500d0beee76878ed49ad

    SHA1

    9f0f5ee03030f94ec1448d720bc373535d4b67be

    SHA256

    139eaafd7a7370ef918bac28b50f0648cc5aad063f66183dd16e65600cc5d425

    SHA512

    a9b8e6e873f6f24375815f959c330be40652c56593cb1a52532ef0447dfaf82f7751fc4f1a4c3f5af88eb688e85e6058e967f5b77276fbcc5877955efffd768d

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

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-SVUGQ.tmp\_isetup\_isdecmp.dll

    Filesize

    32KB

    MD5

    b6f11a0ab7715f570f45900a1fe84732

    SHA1

    77b1201e535445af5ea94c1b03c0a1c34d67a77b

    SHA256

    e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67

    SHA512

    78a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771

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

    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • memory/784-12-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/784-66-0x0000000003520000-0x00000000037D0000-memory.dmp

    Filesize

    2.7MB

  • memory/784-82-0x0000000003520000-0x00000000037D0000-memory.dmp

    Filesize

    2.7MB

  • memory/784-78-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2216-77-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2216-0-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/2216-2-0x0000000000401000-0x000000000040B000-memory.dmp

    Filesize

    40KB

  • memory/2460-86-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-117-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-139-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-79-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-136-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-83-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-133-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-89-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-92-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-95-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-96-0x0000000002230000-0x00000000022D2000-memory.dmp

    Filesize

    648KB

  • memory/2460-102-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-105-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-108-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-111-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-114-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-75-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-120-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-123-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-126-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2460-130-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2720-68-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2720-69-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB

  • memory/2720-73-0x0000000000400000-0x00000000006B0000-memory.dmp

    Filesize

    2.7MB