Overview

overview

10

Static

static

7

2f1a8efb96...71.exe

windows7-x64

10

2f1a8efb96...71.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2f1a8efb9627283f08b6819ab35eef398a6e51f89a8b17cdb90270af67943071

  • Size

    10.2MB

  • Sample

    240204-bl1r2sead6

  • MD5

    f34bb3553d1d9b878d7532795ab5ec7c

  • SHA1

    b2ecbcc62cb9f06fbdb0e11cf76708abf186e960

  • SHA256

    2f1a8efb9627283f08b6819ab35eef398a6e51f89a8b17cdb90270af67943071

  • SHA512

    540ce2559e0677c3e812ccb1c9810ed743b20243f1fb63c999d2e58eb19b6ad6b97ede6a130e4d8172b3c7b10b819e3d41754afdf253bb525f3d9f639044361c

  • SSDEEP

    196608:QBCIYp8VP0VHzg9Aj72jlZOvyhO27EDRJL6A/PeaB6Jc6HkPq:xmVP0Vg9AejlZ5O2oVJL7H2Jhiq

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

      2f1a8efb9627283f08b6819ab35eef398a6e51f89a8b17cdb90270af67943071

    • Size

      10.2MB

    • MD5

      f34bb3553d1d9b878d7532795ab5ec7c

    • SHA1

      b2ecbcc62cb9f06fbdb0e11cf76708abf186e960

    • SHA256

      2f1a8efb9627283f08b6819ab35eef398a6e51f89a8b17cdb90270af67943071

    • SHA512

      540ce2559e0677c3e812ccb1c9810ed743b20243f1fb63c999d2e58eb19b6ad6b97ede6a130e4d8172b3c7b10b819e3d41754afdf253bb525f3d9f639044361c

    • SSDEEP

      196608:QBCIYp8VP0VHzg9Aj72jlZOvyhO27EDRJL6A/PeaB6Jc6HkPq:xmVP0Vg9AejlZ5O2oVJL7H2Jhiq

    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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks