Overview

overview

10

Static

static

10

2024-06-24...at.exe

windows7-x64

10

2024-06-24...at.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    24-06-2024 09:02

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General

  • Target

    2024-06-24_c8015ef5fd4928a90e064f2ef5aebc97_icedid_poet-rat_quasar-rat_xrat.exe

  • Size

    4.0MB

  • MD5

    c8015ef5fd4928a90e064f2ef5aebc97

  • SHA1

    e7258d245f886af77154fcb2838a1adadba34e94

  • SHA256

    97787cbf8314dfd67bbb56e12489e8900022b3c31565b275f479bcaa9b9e7557

  • SHA512

    9450336f760f3b1749f21203d992f3ef095164d3f1cf91ede05d157830a59e1a054b9c682fb5c6dee794604c944d34b7e03367bba03dbdcfbf51c1073d33010c

  • SSDEEP

    98304:Qh81Y4zw2GFvr22SsaNYfdPBldt6+dBcjHtKRJ6Bf:by2KM7jGIf

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

mx5.deitie.asia:4495

Mutex

ebbf737a-dddd-43dd-9b0a-74831302455d

Attributes
  • encryption_key

    F8516D89A1DFD78BD8FF575BBC3AE828B47FF0E1

  • 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.

    trojanspywarequasar
  • Quasar payload 3 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 3 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 3 IoCs
  • Detects executables containing common artifacts observed in infostealers 3 IoCs
  • Drops startup file 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-24_c8015ef5fd4928a90e064f2ef5aebc97_icedid_poet-rat_quasar-rat_xrat.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-24_c8015ef5fd4928a90e064f2ef5aebc97_icedid_poet-rat_quasar-rat_xrat.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sign.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\\sign.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1696
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2452
      • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2708
        • C:\Windows\system32\schtasks.exe
          "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2788

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sign.exe
    Filesize

    3.1MB

    MD5

    7498d554976744dfbd271ba755c6c192

    SHA1

    ec733d01e776518e387d2f51d1a6559b81f03b1e

    SHA256

    44089202623b9671051aa5bba5e72f81f68ce818c3054dde57726aaa6dcb9ff7

    SHA512

    d4e987d0e6235001fac4ae3a634e8fe98c6830e26a6a6876fbc36262842688d3ec301cff75003d2af695cdfd357ac50919946695b7d5d3293ebcba97153e1030

    Download Submit
  • memory/1696-5-0x000007FEF5B73000-0x000007FEF5B74000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1696-6-0x0000000000EF0000-0x0000000001214000-memory.dmp
    Filesize

    3.1MB

    Download
  • memory/1696-7-0x000007FEF5B70000-0x000007FEF655C000-memory.dmp
    Filesize

    9.9MB

    Download
  • memory/1696-13-0x000007FEF5B70000-0x000007FEF655C000-memory.dmp
    Filesize

    9.9MB

    Download
  • memory/2708-14-0x0000000000E70000-0x0000000001194000-memory.dmp
    Filesize

    3.1MB

    Download