Analysis

  • max time kernel
    150s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19-10-2024 01:26

General

  • Target

    5a2e2ca9860980f6aaaad2383eec1d31_JaffaCakes118.exe

  • Size

    253KB

  • MD5

    5a2e2ca9860980f6aaaad2383eec1d31

  • SHA1

    268cc396b61dbe764832829dfb23091b7f8dc4e0

  • SHA256

    8b30759a63cce817fa34ef8388730a603b68ee13423c44f432f9e90e9cfa35d6

  • SHA512

    919e5474fc73c53c2fdc35483b1e2faa0805c0bc5aa9238831ea4dcbc8c9b48e1f36816ca48b51aee104d40e4237b5fc7671ffd88be5387209263b526aadd88e

  • SSDEEP

    6144:CD7cY2fgssM7Wirg9KXylmRiL+QMeC/i6isqX7UovnONztByipwxZS8:Cl8E4w5huat7UovONzbXw

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

letomaniydh.ddns.net:1604

letomaniydh.ddns.net:27015

testnjrat123.ddns.net:27015

Mutex

DC_MUTEX-G4GUG7Y

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    377PcDZmSHBr

  • install

    true

  • offline_keylogger

    false

  • persistence

    false

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 6 IoCs
  • Modifies security service 2 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • Disables Task Manager via registry modification
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 6 IoCs

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

  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 49 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a2e2ca9860980f6aaaad2383eec1d31_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\5a2e2ca9860980f6aaaad2383eec1d31_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1904
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\5a2e2ca9860980f6aaaad2383eec1d31_JaffaCakes118.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1624
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\5a2e2ca9860980f6aaaad2383eec1d31_JaffaCakes118.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2224
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1664
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2572
    • C:\Windows\MSDCSC\msdcsc.exe
      "C:\Windows\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:1012
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Windows security bypass
        • Disables RegEdit via registry modification
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2772
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2856

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Windows\MSDCSC\msdcsc.exe

    Filesize

    253KB

    MD5

    5a2e2ca9860980f6aaaad2383eec1d31

    SHA1

    268cc396b61dbe764832829dfb23091b7f8dc4e0

    SHA256

    8b30759a63cce817fa34ef8388730a603b68ee13423c44f432f9e90e9cfa35d6

    SHA512

    919e5474fc73c53c2fdc35483b1e2faa0805c0bc5aa9238831ea4dcbc8c9b48e1f36816ca48b51aee104d40e4237b5fc7671ffd88be5387209263b526aadd88e

  • memory/1012-14-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1012-18-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1904-0-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1904-1-0x00000000003E0000-0x00000000003E1000-memory.dmp

    Filesize

    4KB

  • memory/1904-13-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/1904-58-0x0000000003CF0000-0x0000000003DAA000-memory.dmp

    Filesize

    744KB

  • memory/2772-16-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2856-19-0x00000000000C0000-0x00000000000C1000-memory.dmp

    Filesize

    4KB

  • memory/2856-57-0x0000000000200000-0x0000000000201000-memory.dmp

    Filesize

    4KB