General

  • Target

    8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe

  • Size

    288KB

  • Sample

    240730-wrmslawcqd

  • MD5

    7e900eb50f9dc1cb5c68ffea4b9e7bcc

  • SHA1

    4dcc14dc2b98fbc171308fb55b5b8551dd96ea96

  • SHA256

    8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3

  • SHA512

    a77aeffc4f80358940e40789a67f67df5adc1bde4790a400665a98871498b10c3206981d3f18efa1149c9ec246f0343d133dd77de4f5a1f5816506a204276b1a

  • SSDEEP

    3072:6q6+ouCpk2mpcWJ0r+QNTBfRuk1qXkXRA4XTZK:6ldk1cWQRNTBpd8t

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.228.105.2:4782

Mutex

4ea5c3e6-40ed-401e-8a68-e96daa2a46a9

Attributes
  • encryption_key

    0FE4B3C613E3E61C318BA9D568DC6A8C56D2E505

  • install_name

    jorder.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    svchost

  • subdirectory

    SubDir

Targets

    • Target

      8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3.exe

    • Size

      288KB

    • MD5

      7e900eb50f9dc1cb5c68ffea4b9e7bcc

    • SHA1

      4dcc14dc2b98fbc171308fb55b5b8551dd96ea96

    • SHA256

      8636f8c4fe1fe4859a3feec23a0cecf12391ddbffbb3d2bec5efe8f3aaac74b3

    • SHA512

      a77aeffc4f80358940e40789a67f67df5adc1bde4790a400665a98871498b10c3206981d3f18efa1149c9ec246f0343d133dd77de4f5a1f5816506a204276b1a

    • SSDEEP

      3072:6q6+ouCpk2mpcWJ0r+QNTBfRuk1qXkXRA4XTZK:6ldk1cWQRNTBpd8t

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Powershell Invoke Web Request.

    • Downloads MZ/PE file

    • .NET Reactor proctector

      Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

MITRE ATT&CK Enterprise v15

Tasks