Analysis

  • max time kernel
    150s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-11-2024 06:11

General

  • Target

    8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe

  • Size

    253KB

  • MD5

    8f8da0e5e91029fb2c41744c78470e97

  • SHA1

    cfb4c8031ec0dc0ea913ca7d6a53bd21fd1dd77c

  • SHA256

    d773d569ee00bea50205a061ee08dbb405ed1afa71ce62b0ea3fbfb2346392ca

  • SHA512

    75aee980f72a4b0e9151c95a3f76dcc8aacc412f5d372516428281c62722919640839e3b37c7d32b2466c4e03ff478698495fd71a0c1c44d35750df65943f700

  • SSDEEP

    6144:YD7cY2fgssM7Wirg9KXylmRiL+QMeC/i6isqX7UovnONztByipwxZ8N:Yl8E4w5huat7UovONzbXwwN

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

skidbooter.no-ip.info:1604

Mutex

DC_MUTEX-F54S21D

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    pQAJ6hoSubuz

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • UPX packed file 20 IoCs

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

  • 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 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 61 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2120
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2476
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\8f8da0e5e91029fb2c41744c78470e97_JaffaCakes118.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2632
    • 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:1952
      • 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:2488
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2360
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2480
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

    Filesize

    253KB

    MD5

    8f8da0e5e91029fb2c41744c78470e97

    SHA1

    cfb4c8031ec0dc0ea913ca7d6a53bd21fd1dd77c

    SHA256

    d773d569ee00bea50205a061ee08dbb405ed1afa71ce62b0ea3fbfb2346392ca

    SHA512

    75aee980f72a4b0e9151c95a3f76dcc8aacc412f5d372516428281c62722919640839e3b37c7d32b2466c4e03ff478698495fd71a0c1c44d35750df65943f700

  • memory/2120-28-0x0000000003640000-0x00000000036FA000-memory.dmp

    Filesize

    744KB

  • memory/2120-1-0x00000000003F0000-0x00000000003F1000-memory.dmp

    Filesize

    4KB

  • memory/2120-0-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2120-31-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2120-29-0x0000000003640000-0x00000000036FA000-memory.dmp

    Filesize

    744KB

  • memory/2360-19-0x0000000000190000-0x0000000000191000-memory.dmp

    Filesize

    4KB

  • memory/2360-4-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2480-63-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-62-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-54-0x0000000000280000-0x0000000000281000-memory.dmp

    Filesize

    4KB

  • memory/2480-56-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-57-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-58-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-59-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-60-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-61-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-70-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-32-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-64-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-65-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-66-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-67-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-68-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2480-69-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2840-53-0x0000000000220000-0x0000000000221000-memory.dmp

    Filesize

    4KB