Overview

overview

10

Static

static

7

c819628876...f9.exe

windows7-x64

10

c819628876...f9.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    c8196288761492d1e659b22638fb94a9e9fa7fbf8ad6e6e1c2c2d59c14a556f9

  • Size

    12.0MB

  • Sample

    240207-bgkj9sdabp

  • MD5

    13a02653ca2e0c643e205989c6407f92

  • SHA1

    a5badc1558d80b97096fb3f5036ece58f509e627

  • SHA256

    c8196288761492d1e659b22638fb94a9e9fa7fbf8ad6e6e1c2c2d59c14a556f9

  • SHA512

    621d0c7fe11b8dba6ac53fe3753f0914514535b45e0d40d5be94c6da352599f78c4e502e3e5de12e0a800646276ca6ca0ac73d112cfd8b302eb497c43c87b54c

  • SSDEEP

    196608:7346g0/MkE+rGyEBhVO3QyUAbfYXtMVNtbtvj3Uaf5oJ43qs/USvmxaHmVUp:z46g0/MkE+roxO3zbxtj3UaKJ43qssjQ

Score
10/10
quasarupdateevasionspywarethemidatrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

UPDATE

C2

armamagedomupdate.ddns.net:4782

127.0.0.1:4782

186.222.176.105:4782
Mutex

1b6d7fed-1a52-4066-b013-42889840485c

Attributes
  • encryption_key

    C77872F68B89499AA5521BDFC1B6CC41F2578CAE

  • install_name

    UPDATE.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    AutoUpdate

  • subdirectory

    SubDir

Targets

    • Target

      c8196288761492d1e659b22638fb94a9e9fa7fbf8ad6e6e1c2c2d59c14a556f9

    • Size

      12.0MB

    • MD5

      13a02653ca2e0c643e205989c6407f92

    • SHA1

      a5badc1558d80b97096fb3f5036ece58f509e627

    • SHA256

      c8196288761492d1e659b22638fb94a9e9fa7fbf8ad6e6e1c2c2d59c14a556f9

    • SHA512

      621d0c7fe11b8dba6ac53fe3753f0914514535b45e0d40d5be94c6da352599f78c4e502e3e5de12e0a800646276ca6ca0ac73d112cfd8b302eb497c43c87b54c

    • SSDEEP

      196608:7346g0/MkE+rGyEBhVO3QyUAbfYXtMVNtbtvj3Uaf5oJ43qs/USvmxaHmVUp:z46g0/MkE+roxO3zbxtj3UaKJ43qssjQ

    Score
    10/10
    quasarupdateevasionspywarethemidatrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      evasion

    • Checks BIOS information in registry

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

      evasion

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

      themida

    • Checks whether UAC is enabled

      evasiontrojan

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks