Overview

overview

10

Static

static

10

2024-06-26...at.exe

windows7-x64

10

2024-06-26...at.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    142s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    26-06-2024 00:46

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General

  • Target

    2024-06-26_1878733d5f2872169c33653a1ac9b623_icedid_poet-rat_quasar-rat_xrat.exe

  • Size

    4.8MB

  • MD5

    1878733d5f2872169c33653a1ac9b623

  • SHA1

    738a018c2c738e93ffa6dce3932ee994aa7b11e3

  • SHA256

    f181b5a4e2f0dc0cdf70e16c18e3466e436aae0bb96ef9b7dc24c7f219167115

  • SHA512

    bc0d3a8a84efcc80b7768efc0b4071722bdfdbb63c9ea9b5e45089257ee527772dfb9f2a259d10abf8ecc54c1816917d5a527bbd87adca333543cb0f1610a4b9

  • SSDEEP

    98304:EQfNOLY2uXHEvr22SsaNYfdPBldt6+dBcjHtKRJ6BJIbzZ3IbzZY:eQHSM7jGImWK

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
  • 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 behavior: GetForegroundWindowSpam 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\2024-06-26_1878733d5f2872169c33653a1ac9b623_icedid_poet-rat_quasar-rat_xrat.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-26_1878733d5f2872169c33653a1ac9b623_icedid_poet-rat_quasar-rat_xrat.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2064
    • 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:2868
      • 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:2784
      • 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:2140
        • 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:2804

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

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  • memory/2140-14-0x00000000012B0000-0x00000000015D4000-memory.dmp
    Filesize

    3.1MB

    Download
  • memory/2868-5-0x000007FEF5693000-0x000007FEF5694000-memory.dmp
    Filesize

    4KB

    Download
  • memory/2868-6-0x00000000010B0000-0x00000000013D4000-memory.dmp
    Filesize

    3.1MB

    Download
  • memory/2868-7-0x000007FEF5690000-0x000007FEF607C000-memory.dmp
    Filesize

    9.9MB

    Download
  • memory/2868-13-0x000007FEF5690000-0x000007FEF607C000-memory.dmp
    Filesize

    9.9MB

    Download