Overview

overview

10

Static

static

3

Encrypted.exe

windows7-x64

10

Encrypted.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    Encrypted.exe

  • Size

    9.0MB

  • Sample

    240430-d8832sca51

  • MD5

    78c78748cab54dcf941633f5297c1bf6

  • SHA1

    0c0ee5e0694315bc3813c95d8561056dd8831bee

  • SHA256

    4b3430ba8a4388133716b3747f00e9a98c99f37631aac98a03ff6bc8b674cf1e

  • SHA512

    d2212b83a7a4ca4d428cb200f45cc723f6f41485ffd7856f6eeba00f86996f584009e3f2fc5bb0230bfaa96e9c75ac08d3a0c56a07fa94b03b5b220e3e63458f

  • SSDEEP

    49152:/D34Eaz/gdH5o3T8VNZXPkp33BbXh4cpybjPimb+GbZ16xViBGGxxedCCaU0Ddd9:/EsHiAKJxDhpYqemxkDTfgY

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

93.123.85.108:4782

Mutex

e14b8f59-979b-4ebf-8602-dd3c4d6c301e

Attributes
  • encryption_key

    534734397C0FA9A1D28F061AD75DF4100BFF5787

  • install_name

    Msconfig.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Extracted

Family

quasar

Attributes
  • reconnect_delay

    3000

Targets

    • Target

      Encrypted.exe

    • Size

      9.0MB

    • MD5

      78c78748cab54dcf941633f5297c1bf6

    • SHA1

      0c0ee5e0694315bc3813c95d8561056dd8831bee

    • SHA256

      4b3430ba8a4388133716b3747f00e9a98c99f37631aac98a03ff6bc8b674cf1e

    • SHA512

      d2212b83a7a4ca4d428cb200f45cc723f6f41485ffd7856f6eeba00f86996f584009e3f2fc5bb0230bfaa96e9c75ac08d3a0c56a07fa94b03b5b220e3e63458f

    • SSDEEP

      49152:/D34Eaz/gdH5o3T8VNZXPkp33BbXh4cpybjPimb+GbZ16xViBGGxxedCCaU0Ddd9:/EsHiAKJxDhpYqemxkDTfgY

    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scripting

1
T1064

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Defense Evasion

Scripting

1
T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks