Overview

overview

10

Static

static

10

04fd43a2fb...1e.exe

windows7-x64

10

04fd43a2fb...1e.exe

windows10-2004-x64

10

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General

  • Target

    04fd43a2fbf40610f559b11414d1a71e.bin

  • Size

    3.1MB

  • Sample

    240701-bdbsys1eka

  • MD5

    04fd43a2fbf40610f559b11414d1a71e

  • SHA1

    dc7608bd69368ac5a62a9d8e287cc89c31fa750f

  • SHA256

    8f2f7929d4d3d04be498567f02d567521ce4c5e7a1d400c4f64f4c2bd78ddcb9

  • SHA512

    dff106b855eb7ee3c9278d9d60ef4b303c670fc976781f9b6318615e60fb513e95aa09e258c36d140d93968951299b963bca3957e7037a0f0ea95e945f631e55

  • SSDEEP

    49152:mvDI22SsaNYfdPBldt698dBcjHrQV37ar77oGd+VXTHHB72eh2NT:mv822SsaNYfdPBldt6+dBcjHK3w

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

pringelsy-41920.portmap.host:41920

Mutex

63621aac-ae17-49da-9413-459827e68061

Attributes
  • encryption_key

    4F2985A1DF21C9CA0E34D9186E1BC62AF4B58C14

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Opera GX

  • subdirectory

    SubDir

Targets

    • Target

      04fd43a2fbf40610f559b11414d1a71e.bin

    • Size

      3.1MB

    • MD5

      04fd43a2fbf40610f559b11414d1a71e

    • SHA1

      dc7608bd69368ac5a62a9d8e287cc89c31fa750f

    • SHA256

      8f2f7929d4d3d04be498567f02d567521ce4c5e7a1d400c4f64f4c2bd78ddcb9

    • SHA512

      dff106b855eb7ee3c9278d9d60ef4b303c670fc976781f9b6318615e60fb513e95aa09e258c36d140d93968951299b963bca3957e7037a0f0ea95e945f631e55

    • SSDEEP

      49152:mvDI22SsaNYfdPBldt698dBcjHrQV37ar77oGd+VXTHHB72eh2NT:mv822SsaNYfdPBldt6+dBcjHK3w

    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

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