Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-04-2024 18:05

General

  • Target

    ffdaa7380de41365e6f885d5c1fefb89_JaffaCakes118.exe

  • Size

    348KB

  • MD5

    ffdaa7380de41365e6f885d5c1fefb89

  • SHA1

    16eca6832828ee340052b50c0cfb6810e4157ce5

  • SHA256

    fe920c2ba73fc82c4564e93fb39fd738aac91ffe5936d4e9bcfa3a14f9ef2863

  • SHA512

    c9a3d05c9a7f6a9956b2a351023191640eefdd6f9bd997f3ecf13a7c76d6cd394ed285a5ed7be132a7eb58c2f0fc7d8cc95a141e9b777133e8529f8857b9c6da

  • SSDEEP

    6144:Uh6bPXhLApfpwgnZOwMstZHbqRuvONBBtbinMucRXov+e5biNa:ImhAprU67TsVinTchov+e1iNa

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

136.244.94.164:3232

Mutex

QSR_MUTEX_aK1Rny3zYk6USUVnES

Attributes
  • encryption_key

    jjeLpKAbWSF7kHDH5wVV

  • install_name

    Client.exe

  • log_directory

    asd

  • reconnect_delay

    1

  • startup_key

    pack

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 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.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ffdaa7380de41365e6f885d5c1fefb89_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\ffdaa7380de41365e6f885d5c1fefb89_JaffaCakes118.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4576
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "pack" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\ffdaa7380de41365e6f885d5c1fefb89_JaffaCakes118.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:964

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/4576-1-0x0000000074CF0000-0x00000000754A0000-memory.dmp

    Filesize

    7.7MB

  • memory/4576-0-0x0000000000620000-0x000000000067E000-memory.dmp

    Filesize

    376KB

  • memory/4576-2-0x00000000055C0000-0x0000000005B64000-memory.dmp

    Filesize

    5.6MB

  • memory/4576-3-0x00000000050F0000-0x0000000005182000-memory.dmp

    Filesize

    584KB

  • memory/4576-4-0x00000000050E0000-0x00000000050F0000-memory.dmp

    Filesize

    64KB

  • memory/4576-5-0x0000000005190000-0x00000000051F6000-memory.dmp

    Filesize

    408KB

  • memory/4576-6-0x00000000055A0000-0x00000000055B2000-memory.dmp

    Filesize

    72KB

  • memory/4576-7-0x0000000006290000-0x00000000062CC000-memory.dmp

    Filesize

    240KB

  • memory/4576-9-0x0000000006610000-0x000000000661A000-memory.dmp

    Filesize

    40KB

  • memory/4576-10-0x0000000074CF0000-0x00000000754A0000-memory.dmp

    Filesize

    7.7MB

  • memory/4576-11-0x00000000050E0000-0x00000000050F0000-memory.dmp

    Filesize

    64KB