Analysis

  • max time kernel
    147s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    14-06-2024 01:04

General

  • Target

    101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe

  • Size

    4.8MB

  • MD5

    749325286628ce27401c098690ebc0d7

  • SHA1

    b2d6201c6c10fe35e3064c501ebf0b41334c065d

  • SHA256

    101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca

  • SHA512

    accc0f2186aba4be0df4869617b031ac6969f43958cc3e25343e05bef5aba741c2f9786dc79bceb2bf4a6cb85df5df927b1dfc680c923b88a66333ddafef3ea5

  • SSDEEP

    98304:mqYKWcj3MsaT3u19x3VbfCEf/qe+oiVk/CdoyLwKYGjQ8Y5HJXDYZFZe:XYKWczdTlzCqYgCohKRQRN5QO

Malware Config

Extracted

Family

socks5systemz

C2

ckoksdv.net

http://ckoksdv.net/search/?q=67e28dd86f5ff42d4509ac187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978f771ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a6f8dfd16c1ea94

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Detects executables packed with VMProtect. 16 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 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\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe
    "C:\Users\Admin\AppData\Local\Temp\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1252
    • C:\Users\Admin\AppData\Local\Temp\is-ORHLB.tmp\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-ORHLB.tmp\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp" /SL5="$7011E,4808638,54272,C:\Users\Admin\AppData\Local\Temp\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2800
      • C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe
        "C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2500
      • C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe
        "C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32_64.exe
    Filesize

    2.9MB

    MD5

    403fcb2628a9d2b8bf04e03f5b27eac7

    SHA1

    38e0c900bc31289d8c3194fb3b9f458290925e6d

    SHA256

    45f3121407742bf6c32e7a089a4b918f7850172238dbda30518645dedabbf164

    SHA512

    f9f1096eedb77386de0d20acd7534f145ce021a0242a0a541caf35317e72c78279a9776ace8fff8c7dcc527ab074a245a5d636c974621f5108426650df5f7da1

  • \Users\Admin\AppData\Local\Temp\is-ORHLB.tmp\101d25afe6de26c8f611bf08e1eb08478e03206b3583c48bb20fa035d4d0ffca.tmp
    Filesize

    680KB

    MD5

    895d982b558dbe81e0d8d31e818f766e

    SHA1

    27d9e61b8edaf48db4c519be05f0f4ea33900a7a

    SHA256

    3c0328c6c8c37a3e81cb28c46eeb4c98f033eaf28326903ac6e7204d23928cfb

    SHA512

    4ab3f51fe1f4b7ce5bd6e21518de1ebae7b631bb4a968a424efff6db1a53755853478db108547492a2784c55f1d934f776388232f556880f682e401c45b7db97

  • \Users\Admin\AppData\Local\Temp\is-V2H6V.tmp\_isetup\_iscrypt.dll
    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • \Users\Admin\AppData\Local\Temp\is-V2H6V.tmp\_isetup\_shfoldr.dll
    Filesize

    22KB

    MD5

    92dc6ef532fbb4a5c3201469a5b5eb63

    SHA1

    3e89ff837147c16b4e41c30d6c796374e0b8e62c

    SHA256

    9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

    SHA512

    9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

  • memory/1252-2-0x0000000000401000-0x000000000040B000-memory.dmp
    Filesize

    40KB

  • memory/1252-0-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/1252-74-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2500-65-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2500-66-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2500-70-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2800-14-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2800-64-0x0000000003A30000-0x0000000003D1F000-memory.dmp
    Filesize

    2.9MB

  • memory/2800-79-0x0000000003A30000-0x0000000003D1F000-memory.dmp
    Filesize

    2.9MB

  • memory/2800-75-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/2956-76-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-93-0x00000000022F0000-0x0000000002392000-memory.dmp
    Filesize

    648KB

  • memory/2956-80-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-83-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-86-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-89-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-92-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-72-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-99-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-102-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-105-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-108-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-111-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-114-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-118-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB

  • memory/2956-121-0x0000000000400000-0x00000000006EF000-memory.dmp
    Filesize

    2.9MB