Overview

overview

10

Static

static

7

ac5efc42d8...ae.exe

windows7-x64

10

ac5efc42d8...ae.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    ac5efc42d89da8b457b51174d7c4154515dada5f17787b8b1a9c3c957223f6ae

  • Size

    12.1MB

  • Sample

    240215-b7zf4see86

  • MD5

    d57a46d32157c46c91ece4cf87007057

  • SHA1

    479e523a253aa2f3e20a1ca26ec35e2019434a7e

  • SHA256

    ac5efc42d89da8b457b51174d7c4154515dada5f17787b8b1a9c3c957223f6ae

  • SHA512

    a32a24f44397b2ba2a2e8b76a4aaa759748b6136d28d504e23c4a7717cc1681a248f40aae8cd7874551bbaa8d84c23154f39d6751952886326a6c61667d5b1dd

  • SSDEEP

    393216:Zc1UVqzAqaeU9d683mTvqccCHhk7SyJjM:uKsnaeSdF2+crhISMjM

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

      ac5efc42d89da8b457b51174d7c4154515dada5f17787b8b1a9c3c957223f6ae

    • Size

      12.1MB

    • MD5

      d57a46d32157c46c91ece4cf87007057

    • SHA1

      479e523a253aa2f3e20a1ca26ec35e2019434a7e

    • SHA256

      ac5efc42d89da8b457b51174d7c4154515dada5f17787b8b1a9c3c957223f6ae

    • SHA512

      a32a24f44397b2ba2a2e8b76a4aaa759748b6136d28d504e23c4a7717cc1681a248f40aae8cd7874551bbaa8d84c23154f39d6751952886326a6c61667d5b1dd

    • SSDEEP

      393216:Zc1UVqzAqaeU9d683mTvqccCHhk7SyJjM:uKsnaeSdF2+crhISMjM

    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