Resubmissions

13-11-2024 11:00

241113-m3yvkazmg1 10

13-11-2024 09:37

241113-lljtmsynbs 10

Analysis

  • max time kernel
    1192s
  • max time network
    1183s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-11-2024 11:00

General

  • Target

    ab300c646b395b9bf5268b9066f8cf125541c819825aef8be358d15f43487ae8.exe

  • Size

    5.7MB

  • MD5

    a72a4b73598223c66b2329ec3681876b

  • SHA1

    e02ba2a0af64ab4edfe8e8f2f778b2e28fd1307e

  • SHA256

    ab300c646b395b9bf5268b9066f8cf125541c819825aef8be358d15f43487ae8

  • SHA512

    dde097b5c428ef795a72b348a4a1c7a01dfa173b12932aa18a0b1756e46bb8b8ab0e4ff94ea0d4f43f6f5c0663e2de4b980bb7f98526cd082d5a6d2510065ec8

  • SSDEEP

    98304:PX4KkfC/nYd51M37MZ7XufeVcN+RKbGPZNn8oyaV6FYMEDiKn0w4EoSyazx11:vGfmYd51M3YZrufe7RJfn8a0FsimWEo+

Malware Config

Signatures

  • Detect Socks5Systemz Payload 1 IoCs
  • Socks5Systemz

    Socks5Systemz is a botnet written in C++.

  • Socks5systemz family
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 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.

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ab300c646b395b9bf5268b9066f8cf125541c819825aef8be358d15f43487ae8.exe
    "C:\Users\Admin\AppData\Local\Temp\ab300c646b395b9bf5268b9066f8cf125541c819825aef8be358d15f43487ae8.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2016
    • C:\Users\Admin\AppData\Local\Temp\is-HS80C.tmp\ab300c646b395b9bf5268b9066f8cf125541c819825aef8be358d15f43487ae8.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-HS80C.tmp\ab300c646b395b9bf5268b9066f8cf125541c819825aef8be358d15f43487ae8.tmp" /SL5="$50256,5252777,721408,C:\Users\Admin\AppData\Local\Temp\ab300c646b395b9bf5268b9066f8cf125541c819825aef8be358d15f43487ae8.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4552
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" pause avidenta_11131
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3620
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 pause avidenta_11131
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4804
      • C:\Users\Admin\AppData\Local\Avidenta 2.7.7\avidenta.exe
        "C:\Users\Admin\AppData\Local\Avidenta 2.7.7\avidenta.exe" -i
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Avidenta 2.7.7\avidenta.exe

    Filesize

    3.5MB

    MD5

    a9f1d0c009cc7a5f06bae7577ec8475b

    SHA1

    7db76fcc785025d0096244ecc5d37b21fb345fdb

    SHA256

    64d6c846aa7a01c4036c281ee677baf42f07c3a31f81baa083f8f15ec8ea6a2d

    SHA512

    a10ea476bb63d0f1445628ae0dcb77d0dee3044918885f2d995a1d3a6dce3462c81f369c20e05d176cb1b706c39e0ab3cf7673011d6830aec10ccd9cadbb9e37

  • C:\Users\Admin\AppData\Local\Temp\is-AL241.tmp\_isetup\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • C:\Users\Admin\AppData\Local\Temp\is-HS80C.tmp\ab300c646b395b9bf5268b9066f8cf125541c819825aef8be358d15f43487ae8.tmp

    Filesize

    2.4MB

    MD5

    438f4076e92d3c839405bab4652fe2ce

    SHA1

    046567cf90b9e87f4b3913030e1acfc0a4341279

    SHA256

    ad1772bd4f07c11a626de2f257d2cc44b63ff9150be9386512840a2381e97b7e

    SHA512

    44985fe1773cc9d1a4ee5ed0e5bcac058c0cd064d3a1e782d9c424efeb89185528e19a177ecfafa173b76b049301d5ff95dafc0b36715a0847eec3f6b4e1506b

  • memory/2016-70-0x0000000000400000-0x00000000004BE000-memory.dmp

    Filesize

    760KB

  • memory/2016-2-0x0000000000401000-0x00000000004A9000-memory.dmp

    Filesize

    672KB

  • memory/2016-0-0x0000000000400000-0x00000000004BE000-memory.dmp

    Filesize

    760KB

  • memory/3836-85-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-96-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-68-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-139-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-65-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-73-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-72-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-76-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-79-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-82-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-136-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-89-0x0000000000A50000-0x0000000000AF2000-memory.dmp

    Filesize

    648KB

  • memory/3836-90-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-66-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-99-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-100-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-103-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-106-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-109-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-112-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-116-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-119-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-122-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-125-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-128-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/3836-131-0x0000000000400000-0x0000000000787000-memory.dmp

    Filesize

    3.5MB

  • memory/4552-6-0x0000000000400000-0x0000000000679000-memory.dmp

    Filesize

    2.5MB

  • memory/4552-69-0x0000000000400000-0x0000000000679000-memory.dmp

    Filesize

    2.5MB