Overview

overview

10

Static

static

10

90e6021564...ab.exe

windows7-x64

10

90e6021564...ab.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    90e6021564d45d877555674a8e44ea83fdac8d4c58d50cec72f068c608c18aab

  • Size

    3.1MB

  • Sample

    240331-3ygngsgb32

  • MD5

    cb9d96470528dad492231fcdf0925086

  • SHA1

    c9c556cabeaa09e24d999fc5d597999a5e0c164d

  • SHA256

    90e6021564d45d877555674a8e44ea83fdac8d4c58d50cec72f068c608c18aab

  • SHA512

    121fd90e09ff59ad056bc15c8c9b90db9298c8a9606a61d20153031bd083ea9df51b8d8c6c34cfb61e8cd6e385bdbe426eeb4c6a85ca87ddea06c7bb3af15a3c

  • SSDEEP

    49152:PvRuf2NUaNmwzPWlvdaKM7ZxTwcQJ+3lmZIXoG/PTHHB72eh2NT:Pvsf2NUaNmwzPWlvdaB7ZxTw1J+3z

Score
10/10
quasarslavespywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Slave

C2

140.238.91.110:38899

uk2.localto.net:38899:38899
Mutex

276d9dc6-b19c-4958-8ac3-89586bd3b515

Attributes
  • encryption_key

    ABCF70C37D1A79A01712038122D1532DF20DF72A

  • install_name

    Client.exe

  • log_directory

    Error Logs

  • reconnect_delay

    3000

  • startup_key

    WOS64

  • subdirectory

    Windows

Targets

    • Target

      90e6021564d45d877555674a8e44ea83fdac8d4c58d50cec72f068c608c18aab

    • Size

      3.1MB

    • MD5

      cb9d96470528dad492231fcdf0925086

    • SHA1

      c9c556cabeaa09e24d999fc5d597999a5e0c164d

    • SHA256

      90e6021564d45d877555674a8e44ea83fdac8d4c58d50cec72f068c608c18aab

    • SHA512

      121fd90e09ff59ad056bc15c8c9b90db9298c8a9606a61d20153031bd083ea9df51b8d8c6c34cfb61e8cd6e385bdbe426eeb4c6a85ca87ddea06c7bb3af15a3c

    • SSDEEP

      49152:PvRuf2NUaNmwzPWlvdaKM7ZxTwcQJ+3lmZIXoG/PTHHB72eh2NT:Pvsf2NUaNmwzPWlvdaB7ZxTw1J+3z

    Score
    10/10
    quasarslavespywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects executables containing common artifacts observed in infostealers

    • Checks computer location settings

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

    • Executes dropped EXE

    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

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks