Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-11-2024 22:04

General

  • Target

    47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe

  • Size

    5.6MB

  • MD5

    852716a2d44e0122b5ce700105964253

  • SHA1

    48fbbc7796850d5edb57f11378a67c10270a8d38

  • SHA256

    47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73

  • SHA512

    efdf7f5393a7532f6772b7e68a644b691256f69f3303d11022a39fa2e9dabc0fa70ad932713357836aed2d0e2d8a4fbd425d57fd82b4306141e4ba90f3267aad

  • SSDEEP

    98304:qiRmxZFsM4kxzDcT+GcY437KvDwEHuujlsaSzsC0p43MpQdZ9nc+fsCb+oSBAON6:/Rm1syxacY48eda2TMpQdZ9nc+fyhNjG

Malware Config

Extracted

Family

socks5systemz

C2

51.159.66.125

217.23.6.51

151.80.38.159

217.23.9.168

37.187.122.227

Attributes
  • rc4_key

    heyfg645fdhwi

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Socks5systemz family
  • 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.

  • Drops file in Program Files directory 34 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Runs net.exe
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe
    "C:\Users\Admin\AppData\Local\Temp\47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4604
    • C:\Users\Admin\AppData\Local\Temp\is-ATU7H.tmp\is-GPESK.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-ATU7H.tmp\is-GPESK.tmp" /SL4 $8015A "C:\Users\Admin\AppData\Local\Temp\47d7bfb8b5ca3cecd19311eb43623c7de17654efd54a7e06b5d610c0efb98a73.exe" 5597940 141824
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2380
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 2
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2760
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 2
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4624
      • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe
        "C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -i
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1352
      • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe
        "C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -s
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3892

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe

    Filesize

    4.4MB

    MD5

    81bf17b6bc712eec07e481349afc3dbc

    SHA1

    eedecca191d3a6b1f16483714343fe1019d7fc62

    SHA256

    81baf334067384061f84fb8335cd811aa22984601ad103e3f575f0a5cb9a639b

    SHA512

    3aa53bfc176d2313e7a02c8f3511e1892adcacf02ee28135e5ae46b1224fdfaef6ddcba8b5f9b340c40c39d22b87d23468401df2c84ac57c57fdeabf2f302171

  • C:\Users\Admin\AppData\Local\Temp\is-ATU7H.tmp\is-GPESK.tmp

    Filesize

    642KB

    MD5

    e57693101a63b1f934f462bc7a2ef093

    SHA1

    2748ea8c66b980f14c9ce36c1c3061e690cf3ce7

    SHA256

    71267ff94c9fc72cbffaeed3bc2f33cef1eeb1887c29c574d7f26595d1a6235f

    SHA512

    3dcda686a85b19a9c7b4c96d132e90ed43c7df13ce9456beb2b88c278d8068cc3abcbfe25b1607c7b8281d276efb24809730f352927b326254f3208cbdf54a3e

  • C:\Users\Admin\AppData\Local\Temp\is-NP2QP.tmp\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • memory/1352-88-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/1352-82-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/1352-84-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/1352-87-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/2380-92-0x0000000000400000-0x00000000004CF000-memory.dmp

    Filesize

    828KB

  • memory/2380-7-0x0000000000400000-0x00000000004CF000-memory.dmp

    Filesize

    828KB

  • memory/3892-96-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-119-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-137-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-134-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-95-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-131-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-99-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-102-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-105-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-108-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-111-0x0000000000CC0000-0x0000000000D64000-memory.dmp

    Filesize

    656KB

  • memory/3892-113-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-116-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-91-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-122-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-125-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/3892-128-0x0000000000400000-0x000000000086F000-memory.dmp

    Filesize

    4.4MB

  • memory/4604-2-0x0000000000401000-0x000000000040A000-memory.dmp

    Filesize

    36KB

  • memory/4604-93-0x0000000000400000-0x0000000000429000-memory.dmp

    Filesize

    164KB

  • memory/4604-0-0x0000000000400000-0x0000000000429000-memory.dmp

    Filesize

    164KB