Analysis

  • max time kernel
    150s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    14-06-2024 01:55

General

  • Target

    b86f509978dec1f400e89a63d2de8b770363b2e904316e9063b9ad46c080175f.exe

  • Size

    4.8MB

  • MD5

    380d33122267e606830bba85597bbb9c

  • SHA1

    3c280b31f6be9b2a0d15f1cf0d932f314bbb724f

  • SHA256

    b86f509978dec1f400e89a63d2de8b770363b2e904316e9063b9ad46c080175f

  • SHA512

    b7fa933a545da21541a38d5a14c376710cf792e222ebe4ab751d5090eb42f0ca4bf6dc90f943a67525c02d2684fdc9c8a973df46ca78204fe0d7ce47719053c1

  • SSDEEP

    98304:m1vNssAFCK0nMd3lhQ0UOaHc27PivQ5HOwRTtLrh4D9q1SKJetbNolkcZU:jsm93lhgOekM/Bt3o99tbO/ZU

Malware Config

Extracted

Family

socks5systemz

C2

ebngmpo.ua

http://ebngmpo.ua/search/?q=67e28dd86554fa2a495aa4197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a071ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a6f8dfc11c2ef92

http://ebngmpo.ua/search/?q=67e28dd86554fa2a495aa4197c27d78406abdd88be4b12eab517aa5c96bd86e596824996148ab2865b77f80ebad9c50f7cb63037ed2ab423a4654383ba915d911ec07bb606a0708720fa11b861c353baf51aba1e7242fa7023cc366689fe19c3ec95983bca

Signatures

  • Detect Socks5Systemz Payload 3 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Detects executables packed with VMProtect. 16 IoCs
  • 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\b86f509978dec1f400e89a63d2de8b770363b2e904316e9063b9ad46c080175f.exe
    "C:\Users\Admin\AppData\Local\Temp\b86f509978dec1f400e89a63d2de8b770363b2e904316e9063b9ad46c080175f.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2916
    • C:\Users\Admin\AppData\Local\Temp\is-ASUSQ.tmp\b86f509978dec1f400e89a63d2de8b770363b2e904316e9063b9ad46c080175f.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-ASUSQ.tmp\b86f509978dec1f400e89a63d2de8b770363b2e904316e9063b9ad46c080175f.tmp" /SL5="$400E0,4803463,54272,C:\Users\Admin\AppData\Local\Temp\b86f509978dec1f400e89a63d2de8b770363b2e904316e9063b9ad46c080175f.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2784
      • C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe
        "C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2396
      • C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe
        "C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2672

Network

MITRE ATT&CK Matrix ATT&CK v13

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Free Audio Converter\audioconverter32.exe
    Filesize

    2.9MB

    MD5

    fecefb27f2f5fffc11c380e2c13d8308

    SHA1

    e11cc93d7cc1a4d01d7660220a16121b4032da6c

    SHA256

    14370d3de60c9acbc677944195f6e9d3e3477fc5e2fb7999dcc13c3fc3eafe45

    SHA512

    c75f4e35040cabdade4b19410b1ff1d6da0b150a491cb5fc9564ca1c987bd9715db2d56623811558b8c29be79d2818ea817156faf1ea34b4f838017ffd62d2f2

  • \Users\Admin\AppData\Local\Temp\is-ASUSQ.tmp\b86f509978dec1f400e89a63d2de8b770363b2e904316e9063b9ad46c080175f.tmp
    Filesize

    680KB

    MD5

    f2ea57162349fbb5a88b276f91880c7d

    SHA1

    31d0ef8f01ec1dbca631b2aee891ec46c0a2c663

    SHA256

    756ee2c303f097f361c1f6f16f118612acd5ceb277fd7642695b36fedf0dba68

    SHA512

    3dd06f405e036ade9fd52ac7ae189e8c1bafc48dc09f6f346f5b1ddb32ec43ecf527bd96d2c446d320cd22ea63d5eae430cab92533847d83a0af015224a13799

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

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • memory/2396-65-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2396-70-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2396-66-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-81-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-93-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-124-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-121-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-73-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-117-0x00000000022E0000-0x0000000002382000-memory.dmp
    Filesize

    648KB

  • memory/2672-116-0x00000000022E0000-0x0000000002382000-memory.dmp
    Filesize

    648KB

  • memory/2672-77-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-115-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-112-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-84-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-87-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-90-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-109-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-94-0x00000000022E0000-0x0000000002382000-memory.dmp
    Filesize

    648KB

  • memory/2672-100-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-103-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2672-106-0x0000000000400000-0x00000000006E9000-memory.dmp
    Filesize

    2.9MB

  • memory/2784-64-0x00000000033E0000-0x00000000036C9000-memory.dmp
    Filesize

    2.9MB

  • memory/2784-80-0x00000000033E0000-0x00000000036C9000-memory.dmp
    Filesize

    2.9MB

  • memory/2784-76-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2784-12-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2916-2-0x0000000000401000-0x000000000040B000-memory.dmp
    Filesize

    40KB

  • memory/2916-75-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2916-0-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB