Resubmissions

09-01-2025 16:23

250109-tvy9pawpbk 10

Analysis

  • max time kernel
    134s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-01-2025 16:23

General

  • Target

    ddnstest.exe

  • Size

    3.1MB

  • MD5

    0b301a943083061bb0e95c688ad02dcf

  • SHA1

    b26d04fcad24a618a422ae156774218d42538d88

  • SHA256

    79b2e8bd0d46901502869063962252c0b80b77ff909f1e497bf4c04ae2f0ec71

  • SHA512

    58e8fa3c6dd985d89fa2cd6a6f91ce87929165cee9d85b0fb1cbb70cfb33053567a333464da804ee7cee80f33bb5b065de4817812b114b9c7dbe5ef60e6ab923

  • SSDEEP

    49152:avyI22SsaNYfdPBldt698dBcjHF2tjmzeEoGdzTHHB72eh2NT:avf22SsaNYfdPBldt6+dBcjHF2te

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

hiimbob.ddnsking.com:9112

Mutex

91f1b164-f669-47a1-b3ec-59976d66b33a

Attributes
  • encryption_key

    FD9ED3A6AE6574CE5C854385C6AC2FC432580344

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 60 IoCs
  • Suspicious use of SendNotifyMessage 60 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ddnstest.exe
    "C:\Users\Admin\AppData\Local\Temp\ddnstest.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:4520
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /7
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1832-25-0x000001987D630000-0x000001987D631000-memory.dmp

    Filesize

    4KB

  • memory/1832-27-0x000001987D630000-0x000001987D631000-memory.dmp

    Filesize

    4KB

  • memory/1832-15-0x000001987D630000-0x000001987D631000-memory.dmp

    Filesize

    4KB

  • memory/1832-17-0x000001987D630000-0x000001987D631000-memory.dmp

    Filesize

    4KB

  • memory/1832-16-0x000001987D630000-0x000001987D631000-memory.dmp

    Filesize

    4KB

  • memory/1832-22-0x000001987D630000-0x000001987D631000-memory.dmp

    Filesize

    4KB

  • memory/1832-21-0x000001987D630000-0x000001987D631000-memory.dmp

    Filesize

    4KB

  • memory/1832-23-0x000001987D630000-0x000001987D631000-memory.dmp

    Filesize

    4KB

  • memory/1832-24-0x000001987D630000-0x000001987D631000-memory.dmp

    Filesize

    4KB

  • memory/1832-26-0x000001987D630000-0x000001987D631000-memory.dmp

    Filesize

    4KB

  • memory/4520-8-0x000000001E340000-0x000000001E37C000-memory.dmp

    Filesize

    240KB

  • memory/4520-4-0x000000001D740000-0x000000001D7F2000-memory.dmp

    Filesize

    712KB

  • memory/4520-3-0x000000001D630000-0x000000001D680000-memory.dmp

    Filesize

    320KB

  • memory/4520-2-0x00007FFC0E970000-0x00007FFC0F431000-memory.dmp

    Filesize

    10.8MB

  • memory/4520-11-0x000000001F850000-0x000000001FD78000-memory.dmp

    Filesize

    5.2MB

  • memory/4520-0-0x00007FFC0E973000-0x00007FFC0E975000-memory.dmp

    Filesize

    8KB

  • memory/4520-10-0x00007FFC0E970000-0x00007FFC0F431000-memory.dmp

    Filesize

    10.8MB

  • memory/4520-9-0x00007FFC0E973000-0x00007FFC0E975000-memory.dmp

    Filesize

    8KB

  • memory/4520-1-0x00000000002A0000-0x00000000005C4000-memory.dmp

    Filesize

    3.1MB

  • memory/4520-7-0x000000001D6C0000-0x000000001D6D2000-memory.dmp

    Filesize

    72KB

  • memory/4520-28-0x00007FFC0E970000-0x00007FFC0F431000-memory.dmp

    Filesize

    10.8MB