Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    15-06-2024 06:24

General

  • Target

    945103d43a3b4db2fdded297ec9625e54f4d7f494aeb27280e133bac22389673.exe

  • Size

    5.8MB

  • MD5

    875191f204d65fba87578811a903b55c

  • SHA1

    f5f246da6aa53095f3fd1cc5b798af0f626464f6

  • SHA256

    945103d43a3b4db2fdded297ec9625e54f4d7f494aeb27280e133bac22389673

  • SHA512

    18319a7dac083bbacaff0d23e6d04c2f45d1af1655830e063102b70789c8ef065e824dfbc2d5073edb7884326faefdda813cb0bd7135e57722d9b383f65ef84b

  • SSDEEP

    98304:mat5MY7lL4fOoffsRGRS2PJrHKLQ/wAzRQwLn368K3BVKQI+fkrYtg91qSe/fC:n5MqBeO+SwJWAza1RVw+fGv1unC

Malware Config

Extracted

Family

socks5systemz

C2

erpkjry.ua

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 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.

  • 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\945103d43a3b4db2fdded297ec9625e54f4d7f494aeb27280e133bac22389673.exe
    "C:\Users\Admin\AppData\Local\Temp\945103d43a3b4db2fdded297ec9625e54f4d7f494aeb27280e133bac22389673.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2492
    • C:\Users\Admin\AppData\Local\Temp\is-B1AS3.tmp\945103d43a3b4db2fdded297ec9625e54f4d7f494aeb27280e133bac22389673.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-B1AS3.tmp\945103d43a3b4db2fdded297ec9625e54f4d7f494aeb27280e133bac22389673.tmp" /SL5="$40234,5810257,54272,C:\Users\Admin\AppData\Local\Temp\945103d43a3b4db2fdded297ec9625e54f4d7f494aeb27280e133bac22389673.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3608
      • C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
        "C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe" -i
        3⤵
        • Executes dropped EXE
        PID:2796
      • C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
        "C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe" -s
        3⤵
        • Executes dropped EXE
        PID:2388

Network

MITRE ATT&CK Matrix ATT&CK v13

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\SVO Media Player\svomediaplayer.exe
    Filesize

    3.2MB

    MD5

    72a10f0b2eb694fddafc4e2b1206baed

    SHA1

    3fc309312cbb308c717ad5d8b2cc09a9a181ca8b

    SHA256

    4d2e77d5a228541339b64312154a611389ca39851ebd77194cfdf2336e15bcee

    SHA512

    6cee2fdbe2e3f21707921eb7fea58652253be49375260a203a2d0015fbc08427d0cd7e17be671f6c3601e1f2965b90bd863e80ffc4a11c2fdfb3fb47bd250443

  • C:\Users\Admin\AppData\Local\Temp\is-9DR3N.tmp\_isetup\_iscrypt.dll
    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-9DR3N.tmp\_isetup\_isdecmp.dll
    Filesize

    13KB

    MD5

    a813d18268affd4763dde940246dc7e5

    SHA1

    c7366e1fd925c17cc6068001bd38eaef5b42852f

    SHA256

    e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64

    SHA512

    b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4

  • C:\Users\Admin\AppData\Local\Temp\is-B1AS3.tmp\945103d43a3b4db2fdded297ec9625e54f4d7f494aeb27280e133bac22389673.tmp
    Filesize

    680KB

    MD5

    e6d2fc7b9b3ceccedcf57875330a8ff1

    SHA1

    7bc2a4e40e24b2c0d130883b7255a97cdd4e1e6f

    SHA256

    001f671b1a90209f7133c55c809be8fe96797c89bebcce04aab5e846d9c91cc3

    SHA512

    0d5809e67459ce5eae974f11428fe5fc124f52d7532528d5952dca17b29d6941a7b1f31e04fbcdc62e86f6186586efb559cfeaca054a7d05c77461d31455ac7f

  • memory/2388-100-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-86-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-121-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-118-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-115-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-112-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-109-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-74-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-106-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-103-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-77-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-80-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-83-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-95-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-89-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2388-90-0x0000000002550000-0x00000000025F2000-memory.dmp
    Filesize

    648KB

  • memory/2492-0-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2492-75-0x0000000000400000-0x0000000000414000-memory.dmp
    Filesize

    80KB

  • memory/2492-3-0x0000000000401000-0x000000000040B000-memory.dmp
    Filesize

    40KB

  • memory/2796-70-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2796-71-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2796-65-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/2796-66-0x0000000000400000-0x000000000072D000-memory.dmp
    Filesize

    3.2MB

  • memory/3608-22-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB

  • memory/3608-76-0x0000000000400000-0x00000000004BA000-memory.dmp
    Filesize

    744KB