Analysis

  • max time kernel
    152s
  • max time network
    174s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    28-11-2022 11:16

General

  • Target

    0e59feb575e3c40de1da9964c7403d425ebd39ed607105cd4446bf6c5c6215d0.exe

  • Size

    643KB

  • MD5

    3d8791d281ae6a73bb52fcec92badb90

  • SHA1

    3492649ce3410c39a0634a12f4afe51fc2cc0464

  • SHA256

    0e59feb575e3c40de1da9964c7403d425ebd39ed607105cd4446bf6c5c6215d0

  • SHA512

    4a63507d648de7abb487bda3416d9df0b6052768cfb3d30af3db63c56747e34ed5dbe768985ef1966bf48ee8b80527f802aa6dc7cd1527ab2ad711d3f97abcfb

  • SSDEEP

    12288:J4zr8W2XcMMnlWmPFqZXnFpE00YglJLobyQqVtQhU7:SgMMMlW2FqBPB0YMNYyQqV5

Malware Config

Extracted

Family

cybergate

Version

v3.4.2.2

Botnet

l2ru

C2

brosto.strangled.net:81

brosto.strangled.net:4123

brosto.strangled.net:6745

brosto.strangled.net:7534

brosto.strangled.net:7653

sasaze.chickenkiller.com:7875

sasaze.chickenkiller.com:8545

sasaze.chickenkiller.com:8642

sasaze.chickenkiller.com:8742

sasaze.chickenkiller.com:8954

brostod.jumpingcrab.com:9647

brostod.jumpingcrab.com:9743

brostod.jumpingcrab.com:9866

brostod.jumpingcrab.com:10535

brostod.jumpingcrab.com:10877

1844205166:53575

1844205166:58656

1844205166:59534

1844205166:59642

Mutex

1J06T62M0GRU16

Attributes
  • enable_keylogger

    true

  • enable_message_box

    false

  • ftp_directory

    ./logs

  • ftp_interval

    30

  • injected_process

    explorer.exe

  • install_dir

    interface

  • install_file

    csrsc.exe

  • install_flag

    true

  • keylogger_enable_ftp

    false

  • message_box_caption

    Remote Administration anywhere in the world.

  • message_box_title

    CyberGate

  • password

    a123123123

  • regkey_hkcu

    exploruse

  • regkey_hklm

    exploruse

Signatures

  • CyberGate, Rebhip

    CyberGate is a lightweight remote administration tool with a wide array of functionalities.

  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops startup file 3 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0e59feb575e3c40de1da9964c7403d425ebd39ed607105cd4446bf6c5c6215d0.exe
    "C:\Users\Admin\AppData\Local\Temp\0e59feb575e3c40de1da9964c7403d425ebd39ed607105cd4446bf6c5c6215d0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:872
    • C:\Users\Admin\AppData\Local\Temp\0e59feb575e3c40de1da9964c7403d425ebd39ed607105cd4446bf6c5c6215d0.exe
      "C:\Users\Admin\AppData\Local\Temp\0e59feb575e3c40de1da9964c7403d425ebd39ed607105cd4446bf6c5c6215d0.exe"
      2⤵
      • Adds policy Run key to start application
      • Modifies Installed Components in the registry
      • Adds Run key to start application
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1532
      • C:\Windows\SysWOW64\explorer.exe
        explorer.exe
        3⤵
        • Modifies Installed Components in the registry
        PID:1624
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe"
        3⤵
          PID:1896
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe
          3⤵
          • Drops startup file
          • Suspicious use of AdjustPrivilegeToken
          PID:880
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1252

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Registry Run Keys / Startup Folder

      3
      T1060

      Defense Evasion

      Modify Registry

      3
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\Admin2.txt
        Filesize

        234KB

        MD5

        752f9d9d08494d0fb4d68fbe3f15ce39

        SHA1

        74f008ed52f7e94877ba5fab76df11b48c4d7852

        SHA256

        04e77ba535043392102974c9e5c2b7bd0c4e1ff3196b22dc94de7f90d6a8f979

        SHA512

        11c3842c62358f86e20fb7460ee305f0169156a3797f4558c7160955e9b489f2dd49a28bb4e7d49c17dd041ac88e9b8c17826507edc8902bc2ae4f8db2409d9f

      • C:\Windows\SysWOW64\interface\csrsc.exe
        Filesize

        643KB

        MD5

        3d8791d281ae6a73bb52fcec92badb90

        SHA1

        3492649ce3410c39a0634a12f4afe51fc2cc0464

        SHA256

        0e59feb575e3c40de1da9964c7403d425ebd39ed607105cd4446bf6c5c6215d0

        SHA512

        4a63507d648de7abb487bda3416d9df0b6052768cfb3d30af3db63c56747e34ed5dbe768985ef1966bf48ee8b80527f802aa6dc7cd1527ab2ad711d3f97abcfb

      • memory/872-71-0x0000000074550000-0x0000000074AFB000-memory.dmp
        Filesize

        5.7MB

      • memory/872-55-0x0000000074550000-0x0000000074AFB000-memory.dmp
        Filesize

        5.7MB

      • memory/872-56-0x0000000074550000-0x0000000074AFB000-memory.dmp
        Filesize

        5.7MB

      • memory/872-54-0x00000000759C1000-0x00000000759C3000-memory.dmp
        Filesize

        8KB

      • memory/880-108-0x0000000010560000-0x00000000105D0000-memory.dmp
        Filesize

        448KB

      • memory/880-106-0x0000000010560000-0x00000000105D0000-memory.dmp
        Filesize

        448KB

      • memory/880-105-0x0000000010560000-0x00000000105D0000-memory.dmp
        Filesize

        448KB

      • memory/880-97-0x0000000000000000-mapping.dmp
      • memory/1252-77-0x0000000010410000-0x0000000010480000-memory.dmp
        Filesize

        448KB

      • memory/1532-74-0x0000000010410000-0x0000000010480000-memory.dmp
        Filesize

        448KB

      • memory/1532-64-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-70-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-67-0x0000000000409860-mapping.dmp
      • memory/1532-72-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-66-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-61-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-57-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-107-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-83-0x0000000010480000-0x00000000104F0000-memory.dmp
        Filesize

        448KB

      • memory/1532-58-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-68-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-63-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-60-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-93-0x00000000104F0000-0x0000000010560000-memory.dmp
        Filesize

        448KB

      • memory/1532-62-0x0000000000400000-0x000000000044B000-memory.dmp
        Filesize

        300KB

      • memory/1532-100-0x0000000010560000-0x00000000105D0000-memory.dmp
        Filesize

        448KB

      • memory/1624-91-0x0000000010480000-0x00000000104F0000-memory.dmp
        Filesize

        448KB

      • memory/1624-88-0x0000000010480000-0x00000000104F0000-memory.dmp
        Filesize

        448KB

      • memory/1624-82-0x0000000074A21000-0x0000000074A23000-memory.dmp
        Filesize

        8KB

      • memory/1624-80-0x0000000000000000-mapping.dmp