Analysis

  • max time kernel
    133s
  • 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
    25-12-2024 15:03

General

  • Target

    d1c701d984c5e04b42f3cb7165fc8907dd9f46e91e14d582b6d0b6f188306954_Sigmanly.exe

  • Size

    2.0MB

  • MD5

    47cfce938a71540a2039aebd5abe0783

  • SHA1

    641d20b31f5b2aba11746d1e533cbe4d4ee9c6ed

  • SHA256

    d1c701d984c5e04b42f3cb7165fc8907dd9f46e91e14d582b6d0b6f188306954

  • SHA512

    338c95a30ccfbfe81b9a12d6ce01a68fdc3ace65da5fff17ccd06dbb4aa135cdf5ce3947107fd2ea46d32406bf6b30c908b6af673268b7c2ca554a7b67ddd4a1

  • SSDEEP

    49152:VIf96RO0EkHbG+xw6NbHHBp7k5hhelN6YawnqLKwgVRl:VIFP6wYt5ShAiYawbwW

Malware Config

Signatures

  • NetSupport

    NetSupport is a remote access tool sold as a legitimate system administration software.

  • Netsupport family
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d1c701d984c5e04b42f3cb7165fc8907dd9f46e91e14d582b6d0b6f188306954_Sigmanly.exe
    "C:\Users\Admin\AppData\Local\Temp\d1c701d984c5e04b42f3cb7165fc8907dd9f46e91e14d582b6d0b6f188306954_Sigmanly.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2432
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Netstat\netsup.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3280
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /V "Netstat" /t REG_SZ /F /D "C:\Users\Public\Netstat\bild.exe"
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:2044
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /V "Netstat" /t REG_SZ /F /D "C:\Users\Public\Netstat\bild.exe"
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:4704
      • C:\Users\Public\Netstat\bild.exe
        C:\Users\Public\Netstat\bild.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        PID:3224

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Public\Netstat\HTCTL32.DLL

    Filesize

    320KB

    MD5

    2d3b207c8a48148296156e5725426c7f

    SHA1

    ad464eb7cf5c19c8a443ab5b590440b32dbc618f

    SHA256

    edfe2b923bfb5d1088de1611401f5c35ece91581e71503a5631647ac51f7d796

    SHA512

    55c791705993b83c9b26a8dbd545d7e149c42ee358ecece638128ee271e85b4fdbfd6fbae61d13533bf39ae752144e2cc2c5edcda955f18c37a785084db0860c

  • C:\Users\Public\Netstat\NSM.LIC

    Filesize

    257B

    MD5

    7067af414215ee4c50bfcd3ea43c84f0

    SHA1

    c331d410672477844a4ca87f43a14e643c863af9

    SHA256

    2050cc232710a2ea6a207bc78d1eac66a4042f2ee701cdfeee5de3ddcdc31d12

    SHA512

    17b888087192bcea9f56128d0950423b1807e294d1c4f953d1bf0f5bd08e5f8e35afeee584ebf9233bfc44e0723db3661911415798159ac118c8a42aaf0b902f

  • C:\Users\Public\Netstat\PCICL32.dll

    Filesize

    3.6MB

    MD5

    00587238d16012152c2e951a087f2cc9

    SHA1

    c4e27a43075ce993ff6bb033360af386b2fc58ff

    SHA256

    63aa18c32af7144156e7ee2d5ba0fa4f5872a7deb56894f6f96505cbc9afe6f8

    SHA512

    637950a1f78d3f3d02c30a49a16e91cf3dfccc59104041876789bd7fdf9224d187209547766b91404c67319e13d1606da7cec397315495962cbf3e2ccd5f1226

  • C:\Users\Public\Netstat\bild.exe

    Filesize

    103KB

    MD5

    8d9709ff7d9c83bd376e01912c734f0a

    SHA1

    e3c92713ce1d7eaa5e2b1fabeb06cdc0bb499294

    SHA256

    49a568f8ac11173e3a0d76cff6bc1d4b9bdf2c35c6d8570177422f142dcfdbe3

    SHA512

    042ad89ed2e15671f5df67766d11e1fa7ada8241d4513e7c8f0d77b983505d63ebfb39fefa590a2712b77d7024c04445390a8bf4999648f83dbab6b0f04eb2ee

  • C:\Users\Public\Netstat\client32.ini

    Filesize

    701B

    MD5

    0f81a0520491093ca88f974d4fbafe11

    SHA1

    555b4dcf7612435066de5b5dc319855a48d5eaf7

    SHA256

    2c27fb0a37f8bdfcce98dab852dee3c2950c9810394a441a19ece63c64daf818

    SHA512

    7b68ae33017d28a37982e718f0393ff7047c43b50aad595d48a0ac61268d6d4162319d8b41b9997b577649d323206a4764e5d502cbc3715dad35692253d8a9e0

  • C:\Users\Public\Netstat\msvcr100.dll

    Filesize

    755KB

    MD5

    0e37fbfa79d349d672456923ec5fbbe3

    SHA1

    4e880fc7625ccf8d9ca799d5b94ce2b1e7597335

    SHA256

    8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18

    SHA512

    2bea9bd528513a3c6a54beac25096ee200a4e6ccfc2a308ae9cfd1ad8738e2e2defd477d59db527a048e5e9a4fe1fc1d771701de14ef82b4dbcdc90df0387630

  • C:\Users\Public\Netstat\netsup.bat

    Filesize

    282B

    MD5

    7604bb3e3698a7074ff39eca4195391f

    SHA1

    f07e84ced88c3076b7a295fd845f7e420dcc3af8

    SHA256

    fe14d5b612cc516a7dde97e3fe93fe35573f808b036e9c9513fceadcb1bcc751

    SHA512

    8639e1079f8e2dfd6afb7cdcf4c6326b514a10c41841bee035f62ba2234e60f13625515588787339ce1c469925595060ea2a9a1f2b3a60aa0d378f00540872c6

  • C:\Users\Public\Netstat\pcicapi.dll

    Filesize

    32KB

    MD5

    dcde2248d19c778a41aa165866dd52d0

    SHA1

    7ec84be84fe23f0b0093b647538737e1f19ebb03

    SHA256

    9074fd40ea6a0caa892e6361a6a4e834c2e51e6e98d1ffcda7a9a537594a6917

    SHA512

    c5d170d420f1aeb9bcd606a282af6e8da04ae45c83d07faaacb73ff2e27f4188b09446ce508620124f6d9b447a40a23620cfb39b79f02b04bb9e513866352166

  • C:\Users\Public\Netstat\pcichek.dll

    Filesize

    18KB

    MD5

    a0b9388c5f18e27266a31f8c5765b263

    SHA1

    906f7e94f841d464d4da144f7c858fa2160e36db

    SHA256

    313117e723dda6ea3911faacd23f4405003fb651c73de8deff10b9eb5b4a058a

    SHA512

    6051a0b22af135b4433474dc7c6f53fb1c06844d0a30ed596a3c6c80644df511b023e140c4878867fa2578c79695fac2eb303aea87c0ecfc15a4ad264bd0b3cd